Full Stack Software Engineer (AI-Native)

Listed as a remote role based in Tallinn, Harjumaa, Estonia. We are looking for an experienced Full Stack Software Engineer (AI-Native) to join our team in a full-time, onsite role based in Tallinn, Estonia. You build software with AI at the core and are comfortable using AI-powered development tools every day. You enjoy owning features end-to-end, solving real-world problems, and building intelligent products that create real value for users. THE ROLE You use AI as your default way of building software, and you build software with AI at its core. That means two things here. First, agentic coding assistants, LLM-driven workflows, and automation are how you work every day: not a novelty, but a force multiplier that lets you move fast without losing rigor. Second, the product itself is AI-native: a system that understands unstructured documents, assists users intelligently, and validates its own outputs. This is a full-stack role spanning a Python backend and a React front-end. You'll own features end-to-end, from prototype to production, and you'll bring AI-native instincts to the entire loop: designing, building, testing, and validating faster and more reliably because you know how to put AI to work. This isn't a demo or a research sandbox. It's a concrete, high-value system that people depend on. If you already build this way, this role is for you. WHAT YOU'LL DO Build with AI as the default. Use agentic coding tools and LLM-driven workflows to design, implement, test, and review. Automate the repetitive parts of engineering so your time goes to the hard, high-leverage problems. Ship AI-powered product features: document understanding, LLM-assisted configuration, self-validating extraction. Own the full stack. Develop and maintain a Python backend (APIs, data pipelines) and a modern React web app for authoring and previewing results. Build validation and testing systems that check automated outputs against ground truth, so the platform can be trusted at scale. Work from outcomes, not specs. You won't get pixel-perfect tickets here. You'll talk directly with stakeholders, understand what the output needs to be, build a first version fast, and iterate based on real feedback. Raise the bar for the team. Share the workflows, tools, and patterns that make everyone faster. WHAT WE'RE LOOKING FOR 2+ years of professional software development experience, with a track record of shipping production software. 1+ years building with AI: fluent with agentic coding assistants and LLM-driven workflows, with informed opinions about how to use them well, and when not to. Strong Proficiency in JavaScript/TypeScript and experience building production web applications with React or a similar modern front-end framework. Proficiency in Python, with experience designing and building RESTful APIs and data-processing services (FastAPI, Flask, or similar frameworks). Hands-on LLM experience applied to real problems: model integration, prompt engineering, evaluation and validation loops, or document/text understanding. Working knowledge of SQL and relational databases. An evidence-driven mindset: you verify that things actually work instead of assuming they do, which matters more, not less, when agents write the code. Comfort with ambiguity: you don't wait for detailed, fully specified requirements. You engage with stakeholders, clarify the intended outcome, make reasonable assumptions, ship an early version, and refine it through iteration. Good written communication helps you keep everyone aligned along the way. NICE TO HAVE Hands-on experience with agent-based / agentic AI systems in production. Building or maintaining evaluation infrastructure for LLM outputs. Experience with document processing at scale (OCR, layout analysis, table extraction). Experience working with time-series data, real-time data pipelines, or large datasets. Familiarity with building automation or industrial IoT systems (BMS/BAS, HVAC, SCADA) or other real-world sensor data domains. WHAT WE OFFER Competitive compensation Fully remote role Flexible hours to promote work-life balance Sports compensation to support employee wellness Friendly, open, supportive colleagues Sounds interesting? Please send your CV and a cover letter to info@r8tech.io or apply directly from here! Show more Show less Seniority level Entry level Employment type Full-time Job function Engineering and Information Technology Industries IT Services and IT Consulting