Join Caplight as a Senior Backend Engineer to architect the data infrastructure powering private market investing. You will design core systems, develop LLM-driven data pipelines, and build AI-native workflows that bring transparency to billions in live order volume, helping the world's leading institutional investors make high-stakes decisions with real-time intelligence.
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Senior Backend Engineer at Caplight
Caplight is building the Bloomberg Terminal for private markets, and they're looking for a Senior Backend Engineer to join their seed-stage, cash-flow positive team in San Francisco. With billions in live order volume and a user base of leading institutional investors, you'll own core backend systems and build LLM-powered data pipelines that bring clarity to the opaque world of VC investing. If you're a TypeScript expert who thrives in high-velocity environments and wants to shape the future of private market infrastructure alongside a world-class engineering team, this is the role for you.
About this role
Role overview
About the company
Finance
Caplight is building the Bloomberg Terminal of the private markets. We bring pricing, liquidity signals, and company data together so private-markets investors—VCs, secondary funds, and asset managers—can track, analyze, and source opportunities with clarity. Our platform surfaces real-time intelligence across thousands of private companies, and our marketplace connects investors and brokers to engage in private stock transactions. Caplight gives professionals a clear view of valuation and market activity in an otherwise opaque space. We’re building the data and execution infrastructure that modern VC investing runs on.
What you'll do
What you will do
- Design and own core backend systems and APIs that ingest, structure, and enrich fragmented data using LLM-powered pipelines.
- Build and maintain an MCP server to enable institutional clients to interact with private market data through AI-native workflows.
- Collaborate with the CTO on system design, evolving the architecture toward modular services that support institutional-grade speed and reliability.
Who you are
Who this is a fit for
- 4+ years of backend-focused experience, ideally at an early-stage startup, with deep proficiency in TypeScript or typed functional languages like Rust or Haskell.
- Proven track record of shipping production-grade systems and contributing to high-level architectural decisions rather than just implementing feature specs.
- Local to the San Francisco Bay Area and excited to work in a high-velocity, in-person environment at least 3 days per week.
Why this role
Why this role is remarkable
- Build the "Bloomberg Terminal for private markets" for a cash-flow positive startup already handling billions in live order volume for top-tier institutional investors.
- High-ownership role working directly with the CTO to evolve a modular, event-driven architecture using modern AI tooling and advanced data pipelines.
- Join a fast-moving, 15-person team in San Francisco where your technical decisions will directly shape the execution infrastructure modern VC investing runs on.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Meet Jack
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
How does this work?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If it’s a match and the company wants to meet you, they’ll make the intro. In the meantime, if you’d like, Jack will send you excellent alternatives.