Senior Backend Engineer

About Junior

Were building cutting-edge LLM-powered tools to supercharge the investment research process for private market investors. Our clients include several of the worlds top 10 private equity and consulting firms and are responsible for investing billions of dollars annually. Were a profitable bootstrapped company with a growing team of 17 based in London and NYC.

You can read more about the company mission & values here.

Role Description

As a Backend Engineer youll 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.

As one of our first engineering hires youll 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

Were 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 : 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 youre excited about the opportunity to drive innovation at Junior wed love to hear from you! Email us at with your resume and a brief introduction. We cant wait to meet you!

Required Experience :

Senior IC

Key Skills

Business Intelligence,Bidding,Accounts Assistant Credit Control,Account Development,Content Development,Lab Testing

Employment Type : Full-Time

Department / Functional Area : Engineering

Experience : years

Vacancy : 1