Join Stairpay as a production-hardened full-stack engineer to own product domains end-to-end. You will build the financial layer for institutional landlords and a resident-facing app using TypeScript, React, and AWS. This role uniquely blends high-level architectural decision-making with advanced AI orchestration to automate complex regulatory workflows in the property sector.
Senior Software Engineer at Stairpay
Stairpay is transforming the UK's affordable housing market with a new operating system for shared ownership. As a Senior Software Engineer, you will join a seed-stage team that is already trusted by a third of the industry. You will leverage an advanced AI-integrated stack including TypeScript, React, and Pulumi to build high-integrity financial layers and automation tools. This is a rare opportunity to own product domains end-to-end, setting the technical direction and defining the "autonomy ladder" for automated deployments. If you are a product-first engineer who thrives on architectural autonomy and building systems that solve real-world homeownership gaps, this is for you.
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Location
London, United Kingdom
Compensation
£75k-£105k + Equity
Company
Stairpay
Role overview
The operating system for institutional landlord, on a mission to allow anyone to afford the home of their dreams
What you will do
- Own the entire lifecycle of a domain from concept and architecture to deployment and operation on a stack featuring Next.js, Postgres, and Pulumi.
- Orchestrate and verify AI-generated code, ensuring high-integrity invariants for money-movement paths and complex regulatory document ingestion workflows.
- Work directly with housing associations to translate complex manual workflows into a unified ledger system that eliminates data reconciliation across disparate platforms.
Who this is a fit for
- Proven senior full-stack experience shipping and operating complete systems using TypeScript, React, and AWS in a production-hardened, high-stakes environment.
- Deep expertise in database schema design and query optimization for systems where financial “domain correctness” and ledger integrity are absolutely non-negotiable.
- A product-first mindset with the engineering judgment to override AI models and design the durable guardrails that define what “correct” means for our sector.
Why this role is remarkable
- Join a high-traction startup already trusted by a third of the industry, including four of the G15 housing associations, at the ground floor.
- Experience a unique “autonomy ladder” engineering culture where you direct AI agents to raise the ceiling of what is possible in software development.
- Influence the roadmap and technical direction directly alongside founders in a small, elite team where your opinions drive immediate product and system changes.
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.
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If your profile’s a match and Stairpay wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.