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Regulex - Senior Engineer
London, hybrid. Mostly in-office for the first 2-3 months while you get up to speed, then flexible. UK right-to-work required.
£80,000, plus a discretionary annual bonus. Start from November 2026.
The company
Our customers sell funds: UCITS, OEICs, and ETFs. We combine our own proprietary data with public sources and integrations into the tools they already use, then surface which allocators are shifting strategy or opening a mandate worth chasing, who the gatekeepers are, and what our customers need to know about the person and the firm’s appetite to win the ticket.
Now we’re going further, moving from surfacing allocators already in motion to predicting where capital is about to move before it’s public; readying the signals that show a mandate forming, so our customers reach the right allocators first.
Multiple clients in production and four tenants provisioned. We are angel-backed by industry operators who have achieved exceptional success in this space. Regulex was one of two companies selected for the Investment Association’s SPARKS accelerator in 2025 and completed an Antler residency before raising in 2026. Our buyers are FCA regulated firms whose InfoSec teams read our architecture before they sign, which shapes nearly every technical decision we make.
The role
You’ll be our first full-time developer, working directly with the founder who has built the Regulex platform to date. Client and regulatory feedback drive our roadmap. The codebase is modern with no legacy hangovers, and your job is to ship: take requirements, break them down, build them well, and get them into production as quickly and safely as possible.
This is a senior engineering role so product direction sits with the founder. You’ll have real input and ownership on how things get built and the core infrastructure, but you won’t be expected to set company strategy or manage anyone.
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We are early and growing, and as the company scales the technical responsibility will grow with it: hiring, architecture ownership, compliance, and eventually technical leadership of the team. If you’re the right person and you want it, there’s a genuine path from this seat to being the lead engineer. We’d rather promote the person who built the platform with us than hire over them.
However, if you just want to be an excellent senior engineer shipping good software, that works too.
Your Key Responsibilities
- Build and ship features across the Regulex platform, from requirements through to production.
- Write well-tested code and help grow our automated test coverage.
- Own day-to-day deployments and keep releases consistent and reliable.
- Monitor performance and fix what’s slow, flaky or expensive.
- Rework or replace what is not working, in the code and in how we build.
- Join client calls from time to time to hear feedback first hand.
- Flag risks and blockers early and report honestly on where work stands.
Technical Requirements
5+ years shipping production software.
What we will assess you on:
- PostgreSQL, 3+ years. Our strongest signal. Schema design, query performance, Row-Level Security, and how you prove tenant isolation actually holds.
- TypeScript, 3+ years. Type safety as a design tool, particularly at the edges: external APIs, JSONB reads, model output.
- Multi-tenant SaaS. Defence in depth, tenant identity from the session and never a URL parameter, and the discipline that the next tenant onboards through configuration rather than a code change.
- Data engineering. Ingestion, extraction, normalisation, entity resolution across sources that disagree. Idempotent by default.
- Background jobs and pipelines. Honest failure over silent truncation, and knowing the difference between a job that failed and one that quietly did nothing.
- LLM-powered features. Structured output, grounding and citation, fail-closed parsing, cost discipline. No tokenmaxxing!
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Our stack:
- React 19
- Next.js 16 App Router
- Prisma 7
- Tailwind v4
- shadcn on Radix
- Python
- Trigger.dev
- Azure Postgres
- Vercel
- GitHub Actions
We do not expect all of it. Deep in most, and quick on the rest.
Who we are looking for
- High agency. You hold the whole problem, not the ticket. You question a requirement that does not make sense before building it, spot what the product should do that nobody has asked for yet, and have the conviction to make your case when you believe you are right.
- You have taken ownership. You have taken products from nothing to live and stayed with them afterwards: the decisions, the mistakes, the fixes at 11pm.
- Ready for the step up. You want more room than you have had, and this is where you set the architecture instead of executing someone else's. As the team grows, we would rather promote from the inside than hire a lead over you.
Our Interview Process
We aim to complete the interview process for selected applicants in less than two weeks. Three stages include:
- Intro call, one hour with our founding team.
- Technical deep-dive, 90 minutes.
- Two references and any other necessary background checks (Note that this is only with your explicit permission).
Compensation
£80,000, plus an annual discretionary bonus based on company performance.
How to apply
Email: jobs@regulex.io. Please provide a short cover letter and a CV. We will aim to respond to all successful applications to begin the interview process as quickly as possible.
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