Backend Engineer

👶 ABOUT JUNIOR We’re building cutting-edge LLM-powered workflow tools to supercharge investment research for private market investors. Our clients include most of the global top 10 private equity and consulting firms - Junior already powers hundreds of billions of dollars invested annually. We’re a profitable, bootstrapped company with a growing team of 30+ based in London, NYC and Sydney. We 10x’d our revenue in 2025. You can read more about the company mission & values here https://myjunior.notion.site/join-junior-2026?source=copy_link. 💡 ROLE DESCRIPTION As a Backend Engineer, you’ll help build and scale the systems that power our AI-driven research platform. This is a systems-level role - ideal for engineers who love thinking about data flows, orchestration, and performance across complex distributed systems. You'll have the unique opportunity to: - Ship quickly - Architect and scale backend systems that support high-throughput LLM interactions, vector search, and multi-agent orchestration. - Stitch together AI infrastructure across model providers, data stores, and internal APIs to create cohesive, performant systems. - Own reliability and observability, helping us evolve our database (Postgres / ClickHouse) and job orchestration systems. - Prototype new backend capabilities (retrieval pipelines, caching layers, async task queues) that let us build faster and smarter. - Shape our engineering culture 🔥 ABOUT YOU We're looking for product-minded backend engineers who: - Based in NYC, ***we are 5 days a week in person - Are excited by the intersection of AI infrastructure and systems design - Have experience leading projects end-to-end - Are eager to contribute to product decisions - Are proficient in our tech stack: Next.js, TypeScript, PostgreSQL - Feel like you are never building fast enough Bonus points for experience working on: - Retrieval/embeddings/prompt orchestration - Built internal infrastructure / dev tools @ startups 🌵 BENEFITS All the usual benefits (competitive pay and equity, private healthcare etc). Unusual benefits: - Gym membership - In-office cook - Summers working in Greece by the beach 📩 HOW TO APPLY If you're excited about the opportunity to drive innovation at Junior, we'd love to hear from you! Email us at careers@myjunior.ai with your resume and a brief introduction. We can't wait to meet you! 🙌