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Full-time | Remote with trips to Silicon Valley office | Reports to Founders Introduction: • Join us at Fastino as we build the next generation of LLMs. Our team, boasting alumni from Google Research, Apple, Stanford, and Cambridge is on a mission to develop specialized, efficient AI., • Fastino's GLiNER family of open source models has been downloaded more than 5 million times and is used by companies such as NVIDIA, Meta, and Airbnb, • Fastino has raised $25M (as featured in TechCrunch) through our seed round and is backed by leading investors including Microsoft, Khosla Ventures, Insight Partners, Github CEO Thomas Dohmke, Docker CEO Scott Johnston, and others. What You’ll Work On: • Experiment with novel language model architectures, helping drive and execute Fastino's research roadmap, • Optimize Fastino’s multimodal models to improve response quality, instruction adherence, and overall performance metrics, • Architect data processing pipelines, implementing filtering, balancing, and captioning systems to ensure training data quality across diverse content categories, • Implement reinforcement learning techniques including Direct Preference Optimization and Generalized Reward Preference Optimization to align model outputs with human preferences and quality standards, • Build robust and real-world motivated evaluations, • Partner with Fastino engineering team to ship model updates directly to customers, • Establish best practices for code health and documentation on the team, to facilitate collaboration and reliable development What We’re Looking For: • Required - Great velocity for building and shipping agents / AI products., • Optional - Advanced degree (Master's or PhD) in Computer Science, Artificial Intelligence, Machine Learning, or related technical discipline with concentrated study in deep learning and computer vision methodologies, • Optional - Demonstrated ability to do independent research in Academic or Industry settings, • Optional - Substantial industry experience in large-scale deep learning model training, with demonstrated expertise in at least one of Large Language Models, Vision-Language Models, Diffusion Models, or comparable generative AI architectures, • Optional - Comprehensive technical proficiency and practical experience with leading deep learning frameworks, including advanced competency in one of PyTorch, JAX, TensorFlow, or equivalent platforms for model development and optimization

About Inworld Inworld is a product-oriented research lab of top AI researchers and engineers, developing best-in-class realtime multimodal models and the only realtime orchestration platform optimized for thousands of queries per second. We’ve raised more than $125M from Lightspeed, Section 32, Kleiner Perkins, Microsoft’s M12 venture fund, Founders Fund, Meta and Stanford, among others. Our technology has powered experiences from companies such as NVIDIA, Microsoft Xbox, Niantic, Logitech Streamlabs, Wishroll, Little Umbrella and Bible Chat. We’ve also been recognized by CB Insights as one of the 100 most promising AI companies globally and have been named one of LinkedIn's Top 10 Startups in the USA. Who We're Looking For A year ago, reliably working agentic systems and sub-second multimodal inference at scale barely existed. Nobody has a decade of experience here. So we're not screening for a resume template — we're looking for strong people from varied backgrounds who learn fast, thrive in ambiguity, and can show us what they've built, broken, and understood. Experience We Find Useful You don't need all of this. But you need enough to make a case. • Inference Optimization. Deep understanding of modern serving frameworks and techniques like vLLM or TRT-LLM., • Model Acceleration. Hands-on experience with quantization, distillation, caching strategies , continuous batching, paged attention, and speculative decoding., • High-Performance Systems. Proficiency in C++, CUDA, Rust, or highly optimized Python. You know how to profile code and squeeze every ounce of performance out of NVIDIA GPUs., • Distributed Systems & Scaling. Experience with Kubernetes, Ray, custom load balancing, multi-GPU/multi-node inference, and reliably handling thousands of concurrent connections., • Public work. Non-trivial systems programming projects, open-source contributions to major inference engines, or deep-dive technical write-ups., • Full-cycle ownership. You can take a model from the research team, containerize it, optimize its serving, and ensure it runs reliably in production., • Background. PhD in CS, Physics, Math, or equivalent practical experience building backend or ML systems. Who Thrives Here • You don’t need a roadmap to start walking; you’re comfortable picking a direction and building the map as you go., • You believe engineering isn't finished until it’s shipped and stable. You have a bias for impact over purely theoretical optimizations., • You don't just ship code; you obsess over the why. You’re the first to question an architecture if you think there’s a better way to solve the core latency or throughput problem., • You aren't satisfied with "the PM said so." You thrive on deep context and want to understand the fundamental logic behind every decision we make. What Working Here Is Like We hand you unclear problems and expect you to make them clear. We value engineers who say "I don't know yet" and then design the benchmark or prototype that finds out. We treat performance, latency, and reliability as first-class product features, not a box to check before launch. Impact comes before everything else, though we support sharing work and open-source contributions that move the field forward. Your work should be visible. Flat structure, fast iterations, minimal process theater. The base salary range for this full-time position is £140,000 – £200,000. In addition to base pay, total compensation includes equity and benefits. Within the range, individual pay is determined by work location, level, and additional factors, including competencies, experience, and business needs. The base pay range is subject to change and may be modified in the future. Candidates must already have the legal right to work in the United Kingdom, as visa sponsorship is not available for this role. For candidates interested in relocating to the San Francisco Bay Area in the future, full U.S. visa and relocation support may be available, subject to business needs and applicable legal and work authorization requirements.

A leading UK healthcare software provider is seeking an experienced Senior Paid Media Manager to join their remote team. This role involves managing Google Ads and Meta Ads campaigns for a portfolio of dental and healthcare clients, focusing on lead generation.

The job also includes cutting metal products and samples to length.

The job also includes cutting metal products and samples to length.

Based in London, you'll be at the centre of a high-conviction expansion push in copper cathode, wire rod, and related base metals. Drive trading and business development in copper cathode, wire rod, and base metal products across Europe and the Middle East. CopperTrading #CommodityTrading #BaseMetal

Are you an experienced sales professional with a strong network in the battery metals market? Our client, a global brokerage with offices in London, Dubai, and the US, is seeking a Battery Metals Salesperson to join their dynamic team. The successful candidate will focus on battery metals (including

WP Metals Limited are currently recruiting for a Class 2 HGV Hiab Licenced Driver for nationwide deliveries to sites and multi drops.

Entity: Customers & ProductsJob Family Group: HSSE GroupJob Description: Occupational Health & Industrial Hygiene Advisor EU & META&l

A digital marketing firm is seeking a remote Paid Social Media Buyer to manage and scale campaigns on Meta and TikTok for eCommerce brands.

We're working with a leading global investment bank that is beginning the build‑out of a physical metals trading business, with the capability to physically settle gold and other metals. Project Lead - Physical Metals Settlement. Lead the design and implementation of end‑to‑end operational pro

A leading manufacturing organization is seeking a Group EHS Manager in Wrexham to provide compliance advice and support across UK sites.The ideal candidate will drive coordination, engage with teams, and oversee EHS practices.Key qualifications include Level 6 Health & Safety qualifications and NEBO

A specialist materials company in Sheffield is seeking an Order Entry professional for its Technical department.The successful candidate will be responsible for entering sales orders and updating systems while collaborating with various departments.Ideal candidates will possess strong attention to d

The role requires owning the planning, buying, and reporting of paid activities primarily on Meta and LinkedIn.

A leading media organization in the UK is seeking a Paid Social Manager to lead the execution and optimization of campaigns across Meta and TikTok.

Candidates should have strong experience in Meta performance and growth strategy, along with excellent communication skills.

The role focuses on control and structured equity investments in the metals and mining sectors, involving detailed financial modelling, valuation analysis, and transaction execution.

The role focuses on driving growth through effective paid social strategies on platforms like Meta and TikTok.

We are currently looking for a Senior HSE Engineer to join our UK team, within the Thermal Power & HVDC Division of METLEN Energy & Metals.

Actively promote the base metals franchise with Sales teams. Experience of at least 5 years in Base metals trading is essential. Ability to carry out execution of multiple base metals contracts in a short timeframe in the most efficient, compliant and cost-effective way.

Meta is looking for an Optical Deployment Engineer (Subsea & Metro) who will be responsible for the deployment and support of one of the world’s largest and most complex networks. As a member of this team, you will have a unique opportunity to be involved in projects related to implementation & sc

The ideal candidate will have over 5 years in ad sales, recent experience with Meta Ads Manager, and strong analytical skills.

Prioritize research that can be applied to Meta's product development.

Meta Ads Creative Strategist - DTC eCommerce (Remote). We are a US-based personal care ecommerce brand seeking an experienced Creative Strategist to lead our Meta ad creative strategy. Develop creative strategies and briefs for Meta ad campaigns.

This role involves managing Meta campaigns in the UK and US, requiring 4+ years of experience in a fast-growing consumer brand.

A global financial services firm in Greater London is hiring a Senior Director focused on developing metals structured solutions.

Proven hands‑on experience managing Google Ads (Search‑led) and Meta. Managing campaigns directly within Google Ads (Search‑led) and Meta.

The role involves managing trade accounting and operating expenses, ensuring compliance with internal controls, and providing support to the metals trading business.

A leading global communications agency in Greater London is looking for an experienced Social Manager to lead the strategic execution of dynamic Social campaigns for a new client in Veterinary Health.The ideal candidate will have a passion for digital and Social Media, analytical skills, and at leas

A health-focused app company is seeking a talented Content Creator to produce high-end Meta ads that convert. You will own the creative process from brief to final delivery, using your expertise in Meta Ads Manager and video editing tools to drive performance. A strong portfolio showcasing your succ

A leading financial institution is seeking a Senior Director to develop structured solutions in metals and expand business opportunities.

A creative digital agency in the UK is seeking a Senior Paid Social Executive to manage and optimize social media campaigns primarily on Meta and TikTok.

Reporting to the Head of PPC, the Hotel Only (Meta Search Manager) will own the strategy and performance of loveholidays’ Hotel Only activity across key meta search partners including Google Hotel Ads, Trivago, TripAdvisor and other emerging platforms. Own and optimise Hotel Only performance acros

A leading beauty retailer in Greater London is seeking a Social Media Manager to develop and implement innovative strategies on Meta platforms, primarily Instagram.

A global price reporting service in Greater London is looking for a Senior Reporter to produce price assessments and in-depth market commentary.Ideal candidates will have expertise in financial markets or commodities, a strong command of English, and practical experience in journalism.Responsibiliti

This role involves analyzing market events, providing real-time opinions, and collaborating with traders on investment ideas within commodities, specifically metals and agricultural sectors.

A leading global investment banking firm is seeking an experienced Metals research strategist to join their Commodities Research team in London. This role involves generating thematic research on metals, analyzing market trends, and developing forecasting models.

As a Solutions Architect on the Monetization Partner Engineering team, you will work with Meta's advertising technology partners across EMEA to help them integrate, optimize, and scale their solutions on Meta's marketing platform. You will serve as the technical bridge between our partners and Meta'

A technology company in the metals industry is seeking a skilled Software Engineer to join its team.

Meta Ads Manager, LinkedIn Ads). Demonstrated experience managing Google Ads, Meta Ads and/or LinkedIn Ads campaigns. Are you a Meta Ads Specialist based in Liverpool looking for your next role? Elevation Recruitment Group are exclusively recruiting for specialists within the legal industry.

A leading financial markets bank in London is seeking a Senior Manager for Metals Origination. You will be responsible for developing client relationships and identifying new opportunities within the Precious and Base Metals markets.

This role requires a deep understanding of Meta and TikTok, along with strong analytical skills.

The successful candidate will focus on control and structured equity investments across the metals & mining value chain.

A leading aerospace industry firm in Wrexham is seeking a Key Account Manager to manage and nurture relationships with important clients in the Tier 1 and Tier 2 Aerospace markets.This role requires excellent communication and negotiation skills, alongside a strong understanding of customer needs.Th

As a Data Scientist at Meta, you will shape the future of people-facing and business-facing products we build across our entire family of applications (Facebook, Instagram, Messenger, WhatsApp, Oculus). By joining Meta, you will become part of a world-class analytics community dedicated to skill dev

This role emphasizes leading paid social performance on Meta, managing a team, and providing strategic insights.

Learn more about benefits at Meta. Meta is seeking PhD Students through 4‑year fixed‑term contracts to join our Fundamental AI Research (FAIR) Lab. As part of FAIR’s general mission, we expect the work to come out of the PhD, both at Meta and the academic partner, to be open science and open s

We are currently looking for an Environmental Supervisor to join our UK team, within the Thermal Power & HVDC Division of Metlen Energy & Metals.