Backend Engineer

junior· Engineering
Apply Now ↗
📍 New York CityFullTime

About this role

👶 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.

💡 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! 🙌

Frequently Asked Questions

Is the salary disclosed for the Backend Engineer position at junior?
The salary for this Backend Engineer role at junior is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Backend Engineer position at junior located?
This Backend Engineer role at junior is based in New York City. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Backend Engineer role at junior full-time or part-time?
This is listed as a FullTime position. It is posted as a Backend Engineer role in the Engineering department at junior.
Which team or department does the Backend Engineer at junior belong to?
This Backend Engineer position is part of the Engineering department at junior. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Backend Engineer position at junior?
Click the "Apply Now" button on this page. You will be redirected to junior's official application portal hosted on ashby where you can submit your application directly.
When was the Backend Engineer job at junior posted?
This Backend Engineer position at junior was posted on Jan 21, 2026. Apply as soon as possible — early applications are often reviewed first.
Backend Engineer
junior
Apply for this role ↗

You'll be redirected to junior's official application page on Ashby ATS.