Principal Engineer

About AssetQ AssetQ, developed and marketed by sigMacity Limited, is the UK's largest repository of fund due diligence information for domestic and international collectives. More than 600 distributors and 500 fund managers use it for semi-automated suitability checks on client investments, reducing operational overhead and strengthening regulatory compliance. AssetQ gathers structured, factual data from fund providers through an industry-devised questionnaire, and delivers accurate, comparable information in a clear format for analysis. The product is backed by the funds industry and led by a management team with over 100 years' combined experience in financial services. The next generation of AssetQ is well advanced and nearing release. Built on a modern TypeScript stack, Atom is the platform this role will own. Role Description Fully remote (UK) · Permanent · £70,000–£85,000 + significant bonus + equity AssetQ runs the data and due diligence infrastructure between 500+ fund managers and 600+ distributors. Atom, our next-generation platform, is already well advanced, which makes now a great time to join. We need a principal engineer to take technical ownership of it, write significant parts of its code, and shape where it goes next. This is a hands-on role. Expect to spend about 90% of your time building software. What the job is We're lean, and it's all hands on deck: everyone builds, tests, deploys and shapes the product. If you want a narrow pigeonhole, this isn't the role for you. If you want ownership, a clear path to shipping first-class web software, zero politics, and a plain view of how your work solves real client problems, read on. You'll probably be A seasoned developer and experienced architect who still loves writing codeConfident setting technical direction, and able to back decisions with clear rationaleAlert to the tension between the perfect implementation and commercial demands, and good at striking the balanceProud of what you ship, and fussy about qualitySerious about uptime: 100% availability is paramount, so resilience, fault tolerance and disaster recovery shape how you design and deliverComfortable with ambiguity, which comes with any fast-moving environmentHappy working autonomously, and collaborative without egoDeeply interested in technology and trends, and keen to research, recommend and lead adoption of what moves the platform forwardVery comfortable with Claude Code (and perhaps other LLM coding assistants), and excited by how AI extends what the product can doCurious enough that the problems stay interesting after hoursFocused on output, not hours loggedA self-starter with an entrepreneurial streak, who'd rather own outcomes in a lean team than work inside a large corporate You'll probably dislike Politics. Hierarchy. Non-meritocratic workplaces. Commuting. Large, disconnected teams. Restrictive corporate regimes, PowerPoint and waffle. Stack You'll have deep knowledge, through first-hand use, of TypeScript, Node.js, NestJS and Angular (used for all new development), PostgreSQL and MySQL, and Google Cloud (GCP). We use Claude Code heavily, and everything lives in an Nx monorepo. Some legacy AngularJS remains: familiarity is a plus, not a requirement. The deal You'll work hard and be rewarded for it. Base salary is £70,000–£85,000. As a matter of principle, we reward through a significant bonus and an equity stake rather than a headline base: it ties reward to contribution, which is how a meritocracy should work. If you back yourself, you'll be comfortable with that. Add a pension and 28 days' holiday including public holidays. You choose your days and hours. Attendance is not a metric. Your influence here could be significant, and the role can grow into CTO. Don't worry, you'll still code. How to apply No agencies, software houses, or consultancies, thanks. You must be eligible to work and be based in the UK. No exceptions Send a CV and a few lines about something you've built that you're proud of. If you have personal projects or repos you're happy to share, include them: work you've done on your own always interests us. No cover letters. Three stages: a screen, a technical and engineering interview, and a final interview.