Backend Engineer

We're looking for a top-tier Backend Engineer to join our tech team and work hand-in-hand with our CTO, Denis Charrier, and the rest of the tech team.

Your core responsibilities will be to:

• Build and operate large-scale, distributed systems powering AI-ready web search
• Develop APIs, data pipelines, and microservices for indexing, retrieval, and monitoring
• Optimize performance, scalability, and resource usage across our stack
• Participate in architecture discussions and contribute to system design
• Collaborate with ML and product teams to deliver data-driven features
• Write clean, maintainable code and participate in code reviews, * Node.js / NestJS
• Python
• Java
• PostgreSQL
• RocksDB
• Vespa
• Apache Storm
• vLLM
• Kubernetes
• GitHub Actions
• Terraform, The ideal candidate will play a central role in our engineering team, partnering closely with the founders to spearhead groundbreaking products. Your backend expertise will shape the future of AI-powered applications and bring our vision to life., * Mission. We believe we play a critical role in building the agentic web. We are 100% committed to our mission of bringing the reality of the world to AI agents.
• Speed. We build fast, we build to last. We get things done, well.
• Ownership. We empower every team member to take ownership of their projects, ensuring they see them through to successful completion.
• Teamwork. Our strength lies in our unity. We rely on one another and embrace our diversity as a core asset.
• Humility. We maintain low egos, showing respect for others and continuously learning from their insights and experiences.

Do you have experience in Terraform?, You're a great match if you:

• Are excited to help build Google for AI agents- and believe in Linkup's mission
• Have strong experience in backend development
• Understand distributed systems, caching, and data storage internals
• Care about performance, reliability, and code quality
• Enjoy debugging tough production issues and optimizing performance bottlenecks
• Are curious about AI infrastructure and retrieval systems
• Thrive in a fast-paced, high-ownership startup environment

We are small technical team, working shoulder to shoulder to build the web of agents.

A bit more about our 3 co-founders:

• Philippe Mizrahi- Led the development of Lyft's Autonomous Vehicles marketplace. Previously launched Amundsen, an open source search engine.
• Denis Charrier- Founding Engineer at Niland, an audio search company (acquired by Spotify), then Staff Engineer at Spotify. 15y of software development experience.
• Boris Toledano- Led robotics at Carrefour, after 3y at McKinsey & Co working on public affairs and digital transformation.

Compensation Range: €70K - €120K

Reality never stands still, and neither should intelligence. Linkup reconnects language models to a living stream of verified facts, ensuring AIs remain as current and insightful as the world they serve. Our mission is to deliver the world's freshest, most trusted knowledge to AIs.