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 DescriptionAs 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
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
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
If you're excited about the opportunity to drive innovation at Junior, we'd love to hear from you! Email us at [email protected] with your resume and a brief introduction. We can't wait to meet you! 🙌
Top Skills
What We Do
Junior leverages the power of generative AI to help deal teams and their advisors collaborate more effectively, uncover deeper insights, and accelerate their path to output. Our platform is purpose-built for the diligence process, with custom workflows that streamline how teams extract, structure, and analyze information. We deliver: • Best-in-class transcription with structured extraction of expert call insights • Instant key takeaways automatically generated after each call • Intelligent search across transcripts to pinpoint relevant insights fast • Quantitative tracking to monitor findings across interviews • Custom GPT-based synthesis that lets you query and summarize expert input at scale By integrating seamlessly into your workflow, Junior transforms raw information into actionable intelligence - quickly, accurately, and securely.
