About PortF

PortF is an AI-native platform helping private equity and debt investors automate portfolio monitoring, valuations, and reporting. We work with funds managing billions in assets - but we move like a 10-person startup.

We use AI where it actually makes sense - to read, reconcile, and structure financial data - so our users get instant, trustworthy insights.

The role

We’re looking for a Software Engineer who loves to build.

You’ll work across our stack (React, TypeScript, Node, Postgres, AWS), owning features end-to-end - from designing data models to polishing UX flows. You’ll help shape our architecture as we scale, and you’ll be trusted to ship quickly and responsibly.

We’re an in-person-first team based in London because speed and collaboration matter the most.

You might be a fit if you:

• Have 4+ years of experience building production web apps in React + TypeScript
• Are comfortable across the stack - from API design to front-end polish
• Have worked with AWS or similar cloud infrastructure
• Take ownership - you care about impact
• Are curious about AI, automation, and code-assist tools (you’ve used Cursor, Copilot, or similar)
• Move fast, test properly, and can think like a product person
• Love to work in a startup environment
• Are excited to work in our central London office (3 days a week)
• Thrive in small, high-energy teams where decisions happen quickly

Bonus points

• Experience with Postgres, Prisma, GraphQL, or Next.js
• Exposure to LangChain / LangGraph / AI-driven workflows
• You’ve built something end-to-end on your own (a side project, startup, or open source)

What you’ll do

• Build new features from scratch - from schema to UI
• Work closely with the founders on product direction and trade-offs
• Help refine our architecture as we scale multi-tenant AI-driven systems
• Ship to production fast
• Experiment with AI tools to accelerate how we build

Why join

• Build real, complex products used by leading investors
• Work with a small, elite team who care deeply about craft and velocity
• Be part of an early team where your work genuinely moves the company