Founding Engineer
Posted 1 day 18 hours ago by Jobtailor
Permanent
Full Time
Other
London, United Kingdom
Job Description
Responsibilities 
- Design, build, and own core backend infrastructure powering a high-throughput, production-grade AI gateway serving billions of tokens per day.
- Architect and evolve a pragmatic microservices system - including a core LLM gateway in Go and auxiliary ML/AI services in Python.
- Make critical decisions around distributed systems design, database selection, caching strategies, and API platform architecture.
- Profile and optimize performance for high-traffic, latency-sensitive systems (sub-20ms SLAs).
- Work hands-on with Kubernetes to deploy, manage, and scale services reliably.
- Redefine and evolve the tech stack as the product and team grow - you will be a key voice in those decisions.
- Collaborate directly with founders to translate product vision into robust, scalable engineering solutions.
- 5+ years of experience building backend services using a compiled language - Go (Golang) strongly preferred.
- Strong experience in distributed systems design and scalability.
- Hands on Kubernetes expertise in production environments.
- Deep knowledge of SQL/NoSQL databases and caching layers - and the judgment to choose the right tool for the job.
- Experience building or designing high-quality API platforms.
- Experience with performance profiling and optimization for high-traffic systems.
- Prior experience at an early-stage startup or on greenfield/founding engineering projects.
- Strong understanding of concurrency patterns and how to apply them correctly.
- The ability to balance pragmatism with quality - you know that "minimal" is not the same as "broken".
- A self starter mindset: you've taught yourself new technologies before and are eager to do it again.
Demonstrates expertise in designing and building scalable backend infrastructure, with a strong focus on distributed systems, performance optimization, and microservices architecture. Proficient in leveraging Kubernetes for deployment and management of high-throughput AI services.