Backend Engineer

MyJunior AI; New York (NY); On-site; Full time

Benefits offered by this job

Competitive pay and equity

Private healthcare

Gym membership

In-office cook

Summers working in Greece by the beach

Job summary

A cutting-edge technology company in New York is seeking a Backend Engineer to help build and scale systems for their AI-driven research platform. You will be one of the first engineering hires, responsible for architecting backend systems and ensuring reliability across distributed systems. Ideal candidates are product-minded engineers based in NYC, excited by AI infrastructure, and proficient in Next.js, TypeScript, and PostgreSQL. Competitive pay, equity, and unique benefits are offered.

Qualifications

• Experience in backend engineering and architecture.
• Ability to work well in a fast-paced startup environment.
• Product-minded with strong problem-solving skills.

Responsibilities

• Build and scale systems for AI-driven research.
• Architect backend systems that support high-throughput interactions.
• Own reliability and observability of databases and orchestration systems.
• Prototype new backend capabilities to improve efficiency.
• Shape engineering culture within the team.

Skills

AI infrastructure and systems design

Leading projects

Proficiency in Next.js

Proficiency in TypeScript

Experience with PostgreSQL

Job description

👶 About Junior

We’re building cutting-edge LLM-powered tools to supercharge the investment research process for private market investors. Our clients include several of the world’s top 10 private equity and consulting firms, and are responsible for investing billions of dollars annually. We’re a profitable, bootstrapped company with a growing team of 24 based in London and NYC.

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.

As one of our first engineering hires, 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 [e-mail] with your resume and a brief introduction. We can't wait to meet you! 🙌