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Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 116 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit _. Location: US (NYC, Chicago, SF, LA) We are looking for talented leaders to build out our Product Adoption teams in the United States. The Reddit Product Adoption team accelerates and scales the adoption of priority products and features, in close partnership with our sales teams, to drive advertiser success and revenue growth. You’ll build, coach, and lead a team of Product Adoption Strategists who drive product acquisition, retention, and upsell efforts for Reddit. This is a unique opportunity to lead a team dedicated to one of our major sales segments that works cross-functionally across Sales, Product, Marketing, Strategy, and more. Your team will be responsible for scaling product adoption across Large Customer Sales and Mid-Market advertisers in the United States. Each strategist partners with Sales to pitch, onboard, activate, and grow advertisers on our Lower Funnel product solutions. Your team’s close partners include Product, PMM, Strategy & Ops, Enablement, Marketing Science, and more. We’re looking for a manager who can inspire a team of problem solvers, storytellers, and strategists. You’re a nimble self-starter who can motivate others to be agile and adaptive to an ever-changing and expanding ads business environment. You demonstrate executive presence and an ability to command a room/’Zoom’ at the C-level. Why Join Reddit’s Product Adoption Team? • Innovative Environment: Be part of a growing team at one of the most dynamic platforms worldwide, contributing to groundbreaking strategies that drive business acceleration., • Career Advancement: Significant opportunities for career development and mobility as you help shape the future of product adoption at Reddit., • Collaborative Culture: Join a group of thoughtful, smart, and adaptable individuals who value collaboration and support each other's growth. Responsibilities: • Attract, train, and develop a team of world-class talent Product Adoption Strategists, • Collaborate with your team to develop vertical and account-level product strategies to deliver business results for Reddit advertisers, • Empower and inspire your team to exceed established product adoption and revenue targets, • Partner with Sales and Product Leaders to crystalize market opportunities, refine product target account lists, and identify roadmap opportunities for development, • Work with Sales and Strategy & Operations leadership to track progress to goal and identify steps that can be taken to accelerate outcomes., • Build and manage senior-level relationships with external (key clients, agency partners) and internal (Product, PMM, Sales Leads) constituents Qualifications: • 5+ years of direct people management experience in advertising, media sales, and/or product growth, • 10+ years of experience in media sales, • Experience leading teams at dynamic, industry-leading companies while working across a variety of verticals and challenges, • Track record of building high-performing teams through mentorship, talent development, and strategic talent acquisition, • Strong analytical and problem-solving skills, • Excellent communication skills, • Passion for Reddit and its incredibly unique audiences Benefits: • Comprehensive Healthcare Benefits and Income Replacement Programs, • 401k Match, • Family Planning Support, • Gender-Affirming Care, • Mental Health & Coaching Benefits, • Flexible Vacation & Reddit Global Days off, • Generous paid Parental Leave, • Paid Volunteer time off Pay Transparency: This job posting may span more than one career level. In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and will also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit _. To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below. The base salary range for this position is: $182,000 - $254,800 USD In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews. During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our _. Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.

Welcome to Planet. We believe in using space to help life on Earth. Planet designs, builds, and operates the largest constellation of imaging satellites in history. This constellation delivers an unprecedented dataset of empirical information via a revolutionary cloud-based platform to authoritative figures in commercial, environmental, and humanitarian sectors. We are both a space company and data company all rolled into one. Customers and users across the globe use Planet's data to develop new technologies, drive revenue, power research, and solve our world’s toughest obstacles. As we control every component of hardware design, manufacturing, data processing, and software engineering, our office is a truly inspiring mix of experts from a variety of domains. We have a people-centric approach toward culture and community and we strive to iterate in a way that puts our team members first and prepares our company for growth. Join Planet and be a part of our mission to change the way people see the world. Planet is a global company with employees working remotely world wide and joining us from offices in San Francisco, Washington DC, Germany, Austria, Slovenia, and The Netherlands. About the Role: Planet’s Mission Control is a web-based application that empowers spacecraft operators and analysts to monitor, control, and study our growing fleet of satellites. It is flanked by a number of distributed microservices that handle spacecraft scheduling, tasking, telemetry processing, and similar operational needs. Together, these services automate much of the day-to-day operations of Planet's fleet of satellites. You’ll be a part of a team that builds, maintains, and operates these tools. Our mission is to offer a seamless interface that enables spacecraft operators, analysts, and engineers at Planet to interact effortlessly with our assets in space. We strive to minimize operational burden, and to automate all aspects of satellite operations. You will be a part of a team that will support, enable and engage with the end users to iterate on these systems. In this role, you will resolve a broad array of engineering problems in a dynamic environment. This is a full-time, remote position based in the United States or Canada. If located near an office, you are expected to work from that office 3 days per week. Impact You'll Own: • Maintain and augment the automation and services ultimately responsible for the operation of Planet’s satellites. This includes but is not limited to:, • Manage cloud-based infrastructure services, and associated tooling to meet internal needs and support customer-facing service level agreements., • Evaluate and choose appropriate software technologies., • Design and deploy critical infrastructure., • Contribute with a team that values open and honest communication, collaboration, self-learning and initiative to solve problems big and small., • Work closely with various teams across Planet, ranging from Satellite and Ground Operations, to Pipeline and Product teams to ensure the satellite constellation meets all of the needs to achieve Planet’s missions. What You Bring: • Bachelor’s degree in Computer Science, Aerospace Engineering, or similar., • 4+ years of relevant work experience., • Experience building services that leverage cloud-based infrastructure and tooling such as AWS or GCP., • Experience maintaining infrastructure with Ansible or similar (eg. Kubernetes, Terraform)., • Experience in Python programming., • Experience with relational database technologies (e.g., Postgres, MySQL, etc.)., • Attention to quality including automated testing, code review, and documentation., • Experience with maintaining peer-reviewed code and continuous integration and deployment workflows and tooling like GitLab CI and Docker or similar., • Proficient Linux skills., • Ability to be a self-starter for solving problems in a dynamic environment., • Ability to clearly communicate and collaborate with cross-functional teams. What Makes You Stand Out: • Experience in API design., • Experience working with monitoring tools like Datadog, Sentry, or equivalent., • Experience working in microservice environments., • Knowledge of aerospace concepts. Application Deadline: September 22, 2026 at 11:59p PT EAR/ITAR Requirements: This position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls. Benefits While Working at Planet: These offerings are dependent on employment type and geographical location, based upon applicable law or company policy. • Comprehensive Medical, Dental, and Vision plans, • Health Savings Account (HSA) with a company contribution, • Generous Paid Time Off in addition to holidays and company-wide days off, • 16 Weeks of Paid Parental Leave, • Wellness Program and Employee Assistance Program (EAP), • Home Office Reimbursement, • Monthly Phone and Internet Reimbursement, • Tuition Reimbursement and access to LinkedIn Learning, • Equity, • Commuter Benefits (if local to an office), • Volunteering Paid Time Off Compensation: The US base salary range for this full-time position at the commencement of employment is listed below. Additionally, this role might be eligible for discretionary short-term and long-term incentives (bonus and equity). The final salary range is determined by job related experience, skills and location. The range displays our typical hiring range for new hire salaries in US locations only. Your recruiter can share more about the specific salary range for your preferred location during the hiring process. #LI-REMOTE New York City + California Salary Range $153,000 - $191,400 USD San Francisco Salary Range $144,500 - $180,600 USD US National Salary Range $127,000 - $158,700 USD San Francisco Fair Chance Ordinance Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. Why we care so much about Belonging. We’re dedicated to helping the whole Planet, and to do that we must strive to represent all of it within each of our offices and on all of our teams. That’s why Planet is guided by an ultimate north star of Belonging—dreaming big as we approach our ongoing work. If this job intrigues you, but you’re thinking you might not have all the qualifications, please... do apply! At Planet, we are looking for well-rounded people from around the world who can contribute to more ways than just what is listed in this job description. We don’t just fill positions, we aspire to fulfill people’s careers, most excited about folks who are motivated by our underlying humanitarian efforts. We are a few orbits around the sun before we get to where we want to be, so we hope you’re excited to come along for the ride. EEO statement: Planet is committed to building a community where everyone belongs and we invite people from all backgrounds to apply. Planet is an equal opportunity employer, and committed to providing employment opportunities regardless of race, religious creed, color, national origin, ancestry, physical disability, mental disability, medical condition, genetic information, marital status, sex, gender, gender identity, gender expression, pregnancy, childbirth and breastfeeding, age, sexual orientation, military or veteran status, or any other protected classification, in accordance with applicable federal, state, and local laws. _ Accommodations: Planet is an inclusive community and we know that everyone has their own needs. If you have a disability or special need that requires accommodation during the hiring process, please reach out to accommodations@planet.com or contact your recruiter with your request. Your message will be confidential and we will be happy to assist you. Privacy Policy: By clicking "Apply Now" at the top of this job posting, I acknowledge that I have read the _, and hereby consent to the collection, processing, use, and storage of my personal information as described therein. Privacy Policy (European Applicants): By clicking "Apply Now" at the top of this job posting, I acknowledge that I have read the _, and hereby consent to the collection, processing, use, and storage of my personal information as described therein. AI in Our Interviewing Process: Planet is committed to providing an exceptional interview experience for all candidates. We currently use _ to better focus on candidates and less on trying to capture notes. As such, with the candidate's consent, select interviews may be recorded and include a "Planet AI Notetaker" for transcription and summarization purposes. Should an interview involve use of AI interview technologies, the candidate will receive notification and have the ability to opt out both in advance and/or real-time. Opting out will not affect one's candidacy. Candidate AI Policy: Planet embraces Artificial Intelligence (AI) tools, and we encourage its responsible use. We understand that candidates may use various resources, including AI tools, to prepare for interviews and assessments. However, during any live interview stage or when actively completing assessments for this position, the use of AI tools—e.g. Large Language Models (LLMs), deep fake technology, etc.—is strictly prohibited unless explicitly prompted by an interviewer or assessment instructions. If you are unsure about acceptable use, please contact your recruiter for clarification. If an AI tool or similar technology is desired as an accommodation, please contact accommodations@planet.com with your request for assistance. Your message will be confidential, and we will be happy to assist you. Violation of this policy may result in disqualification of your application.

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit _. Reddit’s lower funnel business is rapidly growing and pushing the heavy ranking web conversion models towards state-of-the-art is critical for continued growth. The Conversion modeling Team plays a pivotal role in developing and maintaining machine learning models that drive user conversions from Reddit Ads, with a special focus on predictive modeling around interactions like purchase, signup, add to cart, and other lower funnel user actions. As we expand our machine learning infrastructure and incorporate new engagement signals, we are looking for a skilled Engineering Manager who can lead this critical team. This role is well-suited for a leader with deep machine learning expertise, strategic vision, and a collaborative mindset to engage with both technical and cross-functional stakeholders. We’re a remote-friendly company, and this position is open to candidates anywhere in the U.S. Target Skills and Expertise The Engineering Manager (EM) will be responsible for defining the team’s vision, setting strategic direction, and executing a technical roadmap for conversion modeling at Reddit. This involves: • Model Architectures: Expertise in architecting and implementing deep learning models, with experience in ranking, recommendation, or conversion modeling., • ML Frameworks: Proficiency with mainstream ML libraries (TensorFlow, PyTorch)., • End-to-End ML Lifecycle: Experience in training, testing, and deploying production-grade machine learning models., • Data Pipelines: Experience orchestrating large-scale data generation and processing pipelines., • Ads domain Experience: Experience in interaction of ranking model with rest of Ads systems like bidding, auction, retrieval etc, • Ads Modeling (Preferred): Background in ads modeling or familiarity with engagement prediction models in the ads domain is beneficial. Role responsibilities: The EM will lead a diverse, high-impact team and will need to navigate and foster collaboration with various teams such as PM, DS, and engineering functions within Ads. Ideal candidates will have: • People Management Experience: Prior experience managing engineering teams with a strong emphasis on technical mentorship and team growth., • Set Technical Vision and Strategy: Ability to plan and execute a long-term technical strategy aligned with business objectives. Define and execute a roadmap for conversion modeling, balancing innovative modeling approaches with business objectives., • Drive Technical Execution: Oversee the model development lifecycle from ideation to deployment, ensuring high standards of ML performance and robustness., • Lead and Mentor a High-Performing Team: Recruit, mentor, and retain top ML talent, fostering a culture of growth, collaboration, and technical excellence., • Collaborate Cross-Functionally: Partner with PMs, data scientists, and other engineering teams to align on engagement strategies, data requirements, and model KPIs., • Innovate in ML Architecture: Implement and optimize model architectures tailored to conversion prediction, leveraging deep learning and advanced ML techniques. Required qualifications: • At least 2+ of experience building and managing high-performing machine learning teams, ideally in the Ads domain. Will consider tech lead experience as well, • Deep ML Expertise: Deep hands-on experience working with machine learning models and deploying them in large-scale production systems. Proven ability in training, evaluating, and deploying large-scale models., • Technical Domain Knowledge: Experience with Ads conversion modeling, ranking (heavy ranker experience) & recommendations experience is required., • Strategic Thinking: Ability to develop and communicate a clear, compelling technical strategy that supports broader company objectives and addresses the needs of internal customers., • Impact-Driven Mindset: Passion for developing scalable, well-designed, and responsible AI solutions that drive business value., • Exceptional Communication & Collaboration: Strong interpersonal skills and a collaborative mindset, with the ability to effectively communicate complex technical topics to diverse audiences and build strong relationships with cross-functional partners Experience with Ads conversion modeling is a plus Perks and Benefits: • 100% remote opportunity (we have 4 office locations for hybrid/onsite work preference in NY, SF, LA and Chicago), • Competitive salary and equity options, • Comprehensive health benefits (medical, dental, vision) & workplace perks (home office set up stipend etc), • Generous 401k matching, • Flexible vacation policy, • Paid parental leave (4+ months), • Family planning support, • Paid volunteer time off #LI-AS1 Pay Transparency: This job posting may span more than one career level. In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit _. To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below. The base salary range for this position is: $230,000 - $322,000 USD In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews. During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our _. Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit _. Reddit has a flexible workforce! If you happen to live close to one of our physical office locations our doors are open for you to come into the office as often as you'd like. Don't live near one of our offices? No worries: You can apply to work remotely in any country in which we have a physical presence. This is a Generalist Senior Backend Engineer position within the Ads Organization. Ads is the fuel that powers Reddit’s mission. As a backend engineer on the team, candidates might work on: • Microservices and APIs that power our advertiser-facing product, ads.reddit.com, • Distributed systems that ensure the right ad gets shown to the right user at the right time, • Backends that power interactive user experiences on our ads like Polls and Games, • Real time, data intensive systems that measure the performance of our ad campaigns, • Infrastructure that supports all of the above Technologies used on the team include: • Languages: Go, Python, Scala, • Frameworks: Spark, Thrift, Baseplate, Kafka, • Datastores: Postgres, BigQuery, Redis, Druid, • Tools: Kubernetes, Argo, Docker, • Work with product managers to design and implement Ads products., • Collaborate closely with the platform and data teams while building new features., • Lead the processes needed to improve operational stability, including improving code quality, delivering dashboards and data visualizations., • Build extensible components that would align with the product objectives., • Support day to day project management tasks including communicating project updates, managing project timelines and overseeing project execution., • 5+ years of software development experience in one or more general purpose programming languages (Java, Scala, Go, C++, Python)., • Able to take complete ownership of a feature or project., • Experience working in the Ads domain, • Experience or interest in the advertising business and understanding customer needs Benefits: • Comprehensive Healthcare Benefits and Income Replacement Programs, • 401k with Employer Match, • Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support, • Family Planning Support, • Gender-Affirming Care, • Mental Health & Coaching Benefits, • Flexible Vacation & Paid Volunteer Time Off, • Generous Paid Parental Leave #li-remote Pay Transparency: This job posting may span more than one career level. In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit _. To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below. The base salary range for this position is: $190,800 - $267,100 USD In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews. During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our _. Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit _. Reddit is continuing to grow our teams with the best talent. This role is_ within the United States. If you happen to live close to one of our physical office locations (San Francisco, Los Angeles, New York City & Chicago) our doors are open for you to come into the office as often as you'd like. The AI Engineering team at Reddit is building our own Reddit-native foundational Large Language Models (LLMs). This team sits at the intersection of applied research and massive-scale infrastructure, training models that truly understand the unique culture, language, and structure of Reddit communities. You'll join a team of distinguished engineers and researchers building the "engine room" of Reddit's AI future — the foundational models that power Safety & Moderation, Search, Ads, and the next generation of consumer products. As a Staff Research Engineer for Post-Training & Evaluation Science, you will own the science of our model development "feedback loop." While pre-training builds the base models, you define how we measure whether those models are safe, smart, and "Reddit-native," and you set the post-training methodology that turns base checkpoints into high-performing endpoints. You will define the Reddit Benchmark — our internal standard for rigorous model quality across both generation and representation — and own the evaluation science that the rest of the org's iteration depends on. • Define the "Reddit Benchmark" evaluation standard: Own the methodology — not just the harness — for rigorously measuring model quality across Safety, Reasoning, representation/retrieval, and Reddit-specific knowledge. Decide what "Reddit-native" means in measurable terms and set the bar the org trains against., • Own evaluation reliability and statistical rigor: Establish the science behind trustworthy evals — judge variance, multi-sample scoring, inter-rater/inter-sample agreement, sampling and temperature effects, and calibration of automated judges. You are accountable for whether a benchmark delta is real or noise. Drive the practice of evaluation as a release gate — offline against frozen datasets, and pre-merge in CI/CD — so regressions are caught before endpoints ship., • Design model-as-a-judge methodology: Own judge selection, prompt design, calibration, and reliability for automated evaluation using frontier external models, enabling rapid, trustworthy iteration cycles., • Set post-training recipes and strategy: Design SFT recipes (data mixtures, curriculum, ablation strategy) that convert base models into helpful, well-aligned endpoints; partner with engineering to scale them., • Evaluate base and CPT checkpoints, not just endpoints: Design checkpoint-selection methodology across CPT experiments and LR studies, so we pick the right base before committing post-training compute., • Drive synthetic data generation strategy: Define and curate high-quality instruction and evaluation sets to improve generalization where human data is scarce., • Partner with Safety Engineering: Translate high-level safety policy into concrete classification metrics, probe sets, and CI/CD unit tests — including precision/recall at threshold, label-noise handling, and false-positive taxonomy for abuse detection (HHV)., • Diagnose post-training instability: Dive into loss curves and eval logs to identify alignment tax and capability degradation, and recommend the fix., • Lead research direction: Set technical direction for evaluation and post-training across the team, mentor engineers and scientists, and represent the work internally (and externally where appropriate)., • 6+ years of professional ML experience (or PhD + 4+) with a direct focus on LLM post-training and evaluation., • PhD or MS in CS, ML, NLP, IR, or a related quantitative field — or equivalent industry research experience., • Deep expertise in evaluation reliability: judge/sample variance, multi-sample scoring, calibration, statistical significance, and the failure modes of automated evaluation., • Strong experience building custom, domain-specific evaluation harnesses (e.g., lm-eval-harness, Inspect AI, LightEval) — you know the strengths and limits of benchmarks like MMLU and GSM8K and when they don't apply, and you treat eval sets as versioned, frozen, regression-tracked code., • Experience evaluating both generation and representation/classification: model-as-a-judge for generative quality and precision/recall, PR-AUC, retrieval/MTEB-style metrics, gold-label denoising, and label-noise handling., • Deep understanding of Continuous Pre-training (CPT), Instruction Tuning (SFT), and how data quality shapes model behavior., • Fluency in Python; strong data-pipeline and eval-harness engineering (e.g., Hugging Face Transformers, vLLM, lm-eval-harness). Working knowledge of PyTorch and distributed training (FSDP2, DeepSpeed ZeRO-3) sufficient to direct and debug post-training runs., • Experience with MLflow or similar experiment-tracking frameworks., • Familiarity with modern fine-tuning frameworks (Axolotl, TorchTune) and PyTorch-native training stacks (TorchTitan)., • Synthetic data generation techniques (e.g., Self-Instruct)., • Experience with preference optimization (DPO, RLHF, RLAIF, GRPO)., • Publications in NLP/ML/FAccT or related venues, or other evidence of research leadership., • Experience evaluating multimodal models (embeddings, hateful-memes-style classification). Benefits: • Comprehensive Healthcare Benefits and Income Replacement Programs, • 401k with Employer Match, • Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support, • Family Planning Support, • Gender-Affirming Care, • Mental Health & Coaching Benefits, • Flexible Vacation & Paid Volunteer Time Off, • Generous Paid Parental Leave #LI-SP1 Pay Transparency: This job posting may span more than one career level. In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit _. To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below. The base salary range for this position is: $230,000 - $322,000 USD In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews. During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our _. Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.

Telecommute (you can work from home, work or school). A paid Product Tester position is perfect for those looking for an entry-level opportunity, flexible or seasonal work, temporary work or part-time work. Product Testers are wanted to work from home nationwide in the US to fulfill upcoming contrac

Telecommute (you can work from home, work or school). A paid Product Tester position is perfect for those looking for an entry-level opportunity, flexible or seasonal work, temporary work or part-time work. Product Testers are wanted to work from home nationwide in the US to fulfill upcoming contrac

Telecommute (you can work from home, work or school). A paid Product Tester position is perfect for those looking for an entry-level opportunity, flexible or seasonal work, temporary work or part-time work. Product Testers are wanted to work from home nationwide in the US to fulfill upcoming contrac

Telecommute (you can work from home, work or school). A paid Product Tester position is perfect for those looking for an entry-level opportunity, flexible or seasonal work, temporary work or part-time work. Product Testers are wanted to work from home nationwide in the US to fulfill upcoming contrac

Telecommute (you can work from home, work or school). Product Testers are wanted to work from home nationwide in the US to fulfill upcoming contracts with national and international companies. A paid Product Tester position is perfect for those looking for an entry-level opportunity, flexible or sea

Telecommute (you can work from home, work or school). Product Testers are wanted to work from home nationwide in the US to fulfill upcoming contracts with national and international companies. A paid Product Tester position is perfect for those looking for an entry-level opportunity, flexible or sea

Telecommute (you can work from home, work or school). A paid Product Tester position is perfect for those looking for an entry-level opportunity, flexible or seasonal work, temporary work or part-time work. Product Testers are wanted to work from home nationwide in the US to fulfill upcoming contrac

Telecommute (you can work from home, work or school). Product Testers are wanted to work from home nationwide in the US to fulfill upcoming contracts with national and international companies. A paid Product Tester position is perfect for those looking for an entry-level opportunity, flexible or sea