You will join a fast-paced team building a category-defining AI platform for the venture capital industry. This hands-on role involves owning large parts of the stack end-to-end, from building RAG pipelines and orchestrating multiple LLMs to designing sophisticated UIs. You will tackle complex document processing challenges and ship production-ready features for global investment firms.
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Full Stack Senior Engineer at High-growth Legal AI startup
Are you a Senior Engineer ready to build the future of venture capital? Join a high-velocity, well-funded Legal AI startup and take full-stack ownership of production AI systems. You'll orchestrate LLMs, build RAG pipelines, and ship features that directly impact global investment deals. If you thrive in fast-paced environments and love solving complex document processing challenges with TypeScript and React, this is your chance to secure a high-impact role with meaningful equity.
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This role is no longer actively hiring, but Jack can still help you discover similar open roles that fit.
Location
London, United Kingdom / Remote
Compensation
Not Disclosed + Equity
Company
Confidential company
Role overview
About the company
High-growth Legal AI startup
What you will do
- Design and ship full-stack features using TypeScript, Node.js, and React while maintaining enterprise-grade security for sensitive legal documents.
- Integrate and optimize RAG pipelines and LLM orchestrations using OpenAI, Anthropic, and Gemini to automate complex document analysis.
- Build scalable backend services and intuitive frontends that handle thousands of real-world investment documents and high-stakes data extraction.
Who this is a fit for
- 5+ years of software engineering experience with a deep mastery of TypeScript, Node.js, and modern React patterns.
- Proven track record of shipping LLM-powered applications in production, including experience with prompt engineering and evaluation frameworks.
- Product-minded engineer who thrives in early-stage chaos and prioritizes shipping high-quality, secure code over consensus.
Why this role is remarkable
- High-velocity environment where you will ship production AI software used by leading global investment funds from day one.
- Well-funded startup backed by top-tier VCs, offering meaningful equity and the chance to influence deal-making workflows at scale.
- True technical ownership over architecture, AI strategy, and product direction within a zero-bureaucracy, engineering-led culture.
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.
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.
Meet Jack
What happens next?
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 your profile’s a match and Confidential company wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.