Full Stack Developer Eu

## About the role You'll own end-to-end features for a data-intensive platform handling 100k+ rows with instant search, real-time updates, and complex filtering. You'll work across the stack — from database queries and API design to frontend performance — with a strong focus on backend depth and execution speed. ## Responsibilities - Build and optimize data-heavy features using React, Node.js, PostgreSQL, and Elasticsearch — filtering, faceting, saved views, real-time updates. - Design efficient APIs and database queries (indexes, pagination, cursor-based, aggregation) to handle large-scale datasets. - Implement optimistic updates, conflict resolution, and retry queues for smooth user interactions. - Own features from requirement to production — making smart trade-offs between speed, quality, and technical debt. - Use AI tools (Cursor, Claude, Copilot) daily to accelerate development. - Continuously monitor and improve performance (query latency, rendering, scrolling FPS). ## Requirements - 5+ years of full-stack experience with strong backend focus (Node.js, PostgreSQL, Elasticsearch). - Solid React/TypeScript skills (frontend is still important, but backend depth matters more). - Experience building products or features end-to-end — you've shipped things people use. - You use AI daily (Cursor, Claude, Copilot) to write, debug, and refactor code. - Founder mindset — you've built side projects, MVPs, or your own products. You take ownership, move fast, and don't wait for perfect requirements. - You understand database performance (indexes, query optimization, pagination strategies) and search (Elasticsearch). ## Nice to have - Experience with real-time collaboration (WebSockets, Liveblocks). - Background in startups or building products from scratch. - Open-source contributions or public side projects. - Familiarity with feature flags, analytics (PostHog/Amplitude), and error monitoring. ## What we offer - Remote within Europe. - Small, autonomous team — no micromanagement. - Heavy focus on execution speed and impact. - Competitive B2B compensation.