Linkup
Senior Backend Engineer
NYC (NY), San Francisco (CA) or Paris (FR) · Senior · Full-time · Posted Nov 3, 2025
- Experience
- 3 years minimum.
About the job
Build and operate backend systems for AI-ready web search, including indexing, retrieval, and monitoring infrastructure.
What you'll do
- Develop APIs, data pipelines, and microservices for indexing, retrieval, and monitoring.
- Optimize system performance, scalability, and resource usage; contribute to architecture and system design.
- Collaborate with ML and product teams and participate in code reviews.
What they ask for
- At least 3 years of backend development experience.
- Understanding of distributed systems, caching, and data storage internals.
- Interest in AI infrastructure and retrieval systems.
Tools
TypeScript / Node.js, Python, Rust, PostgreSQL, Redis, NATS, gRPC, Vespa
AI focus
Build AI-ready web search infrastructure, including retrieval systems and data-driven features for AI applications.
Model-written summary · the original posting is authoritative