140 Best web Jobs in Oleiros (September 2025)

Taizen

Senior Software Engineer (Data/Backend)

2 days ago

A Coruña

Join us as a Founding Senior Software Engineer to build the next generation AI analytics platform for helping product, marketing and sales teams make sense of customer feedback at scale! This role is not suitable for you if you have been working mainly on freelancing projects or only in consulting. We require strong experience working on the same product over a long period of time within a product or data platform organization. 1. Who we are 🚢 Taizen is building the next-generation AI analytics platform for customer feedback. We recognize that making sense of qualitative customer feedback from multiple feedback sources is manual and time-consuming for product, marketing and sales teams to get an in-depth view of customer pain points and identify opportunities to drive sales and retention leading to millions of euros in incremental revenue. 👨‍👨‍👧‍👦 The next frontier of knowledge work will be AI-assisted and our mission is to accelerate this transition into an AI-first world by enabling companies create more value for their customers through a deeper understanding of customer needs. 🎯 Taizen equips teams with the super powers to go beyond tracking explicit user actions to gleaning insights from unstructured customer feedback data from multiple feedback sources and customer touchpoints. We do this by simplifying complex data collection and reconciliation from multiple sources to ensure high-quality data at the source, automating AI insight extraction at scale and building agents that "gets your insights job done" on your behalf without needing a data scientist or data analyst. 📈 We’ve processed over 500M user signals to date and serve several data-driven and Enterprise companies. If you’re excited about the potential to redefine what the future of data-driven organizations should look like in an AI-first world, then you just might have found your band! 🎶 We are a VC-backed company built by two founders who spent the last 6 years at Spotify shipping personalized listening experiences to millions of Spotify users globally. 2. About the role We are currently seeking an experienced Senior Software Engineer with a strong Data and Backend background to join our growing team. As a Founding Engineer on the team, you will be responsible for building a scalable backend infrastructure for our data-intensive web app, optimizing storage/database workloads, ensuring high availability for our AI/ML backend services, scaling our integrations with multiple tools for ingesting different data types, and building robust data pipelines for data transformation and processing. You’ll partner closely with Full-Stack Engineers and AI/ML Scientists to ship production systems powered by LLMs and ML models. Key Responsibilities • Build and own scalable backend services for our data-intensive web app and AI/ML model serving, • Make database and storage trade-offs to optimize for the best performance when managing large amounts and varieties of data, including vector stores, • Build robust batch and real time data pipelines that can scale with increased load and data, • Build and maintain data integrations with different data sources and platforms (source and sink), • Design and manage the evolution of flexible data models and database infrastructure to handle different types of data sources and data points, optimizing for fast reads/writes, • Implement and manage a robust workflow orchestration for multiple data jobs, • Setup robust testing practices, monitoring and observability to ensure the reliability of all services and data pipelines, • Stay up-to-date with Software Engineering and Data Engineering Best Practices Minimum Qualifications • Bachelor's or Master's Degree in Computer Science or a related field, • Solid CS fundamentals and distributed systems knowledge is a must-have, • Experience building scalable data pipelines, orchestrating workflows and optimizing pipelines, • Experience working with data warehouse technologies, • Experience working with TypeScript/NodeJS/Python and a strongly typed language, • Very comfortable working across the data and backend, • Comfortable managing cloud infrastructure for backend, ML and data pipelines at scale (DevOps), • Ability to work collaboratively with cross-functional teams including Frontend and Machine Learning Engineers Additional Requirements • Previous experience working with LLMs, • Familiarity with vector databases/stores, • Ability to work across the stack and pick up new tools/technologies, • Strong problem-solving skills and ability to work in a fast-paced environment, • Excellent communication and interpersonal skills 3. Why you definitely want to work with us • 🚀 Asides from being part of an exciting mission and building things from scratch, you’ll be part of a small fun and ambitious team that loves moving fast and trying things out., • 👨‍👨‍👧‍👦 You’ll be doing one of the most impactful works of your career, making people’s lives better through AI., • 🥳 You will work hard, but we will celebrate the small and big wins together., • 🎉 We will organize company offsites a few times a year to work and play together., • 💰 And of course, you will get a competitive salary, significant equity ownership and professional development opportunities!

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