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Senior Backend EngineerJunior CompanyUnited States
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Senior Backend Engineer

Junior Company
  • US
    United States
  • US
    United States

Über

About Junior
We're building cutting-edge LLM-powered tools that supercharge investment research for the world's most demanding deal teams. Our clients include several of the top 10 global private equity firms, Big 4 professional services firms, and leading consulting practices: organisations responsible for deploying billions of dollars annually.
We're a profitable, bootstrapped company with a growing team of ~28 people based in London and New York. We 10x'd our revenue in 2025 and are on track to grow 2-3x again this year. Junior saves clients an average of 10 hours per week, and we're expanding fast into new verticals including investment banking, hedge funds, and research firms.
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!
  • United States

Sprachkenntnisse

  • English
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