Senior Software Engineer

You own what must be true.

Cur8 Capital is an FCA-regulated investment platform for people who refuse to compromise their values, and you will build, run and own real services inside it: the NestJS and TypeScript on Postgres and AWS behind our deals across real estate, private equity, venture and income. Every release you make touches real people's savings.

The job is not quite the one most of us trained for. Agents now write most of the code and draft much of the spec, working inside autonomy tiers you set, with you reviewing before anything merges. What they cannot do is decide what must be true, hold the domain and system knowledge they have no way to learn, and answer for what goes live. We hire for that judgement.

• Name what must be trueDecide the commitments for your area, the invariants that can never quietly break: balances reconcile, permissions stay explicit, customer harm stays limited, failure stays inspectable. Hold the domain and system knowledge an agent has no way to learn, and write it down so it can act on it.
• Direct the buildTurn intent into safe, reviewed, working change. Agents do more of the typing now, so you set the autonomy tier for the work, make the design calls, review before merge, and own the result.
• Make it checkableBuild so correctness can be proven rather than hoped for: strong tests, deterministic checks over prompts, observability with Sentry and CloudWatch, and guardrails that catch a bad change before it reaches an investor.
• Run what you buildOwn deployment, CI/CD and infrastructure as code with Terraform, and the day-to-day health of your services: you build it, you run it.
• Improve how we buildMake the whole team faster and safer through better patterns, tooling, prompts, evals and checks, down to how we grade a new model before it earns more autonomy.
• Answer for what goes liveStay accountable for what reaches real investors, and write down the decisions behind your work so the next person can build on them.

• Deep knowledge of the domain, the product and the system as your edge, and the judgement to decide what must be true and what can never be allowed to break.
• Several years building and running production services, enough to know what good design looks like and why it matters.
• Expert with TypeScript and Node.js (we use NestJS) and a relational database like Postgres, and comfortable across APIs, AWS and infrastructure as code (Terraform).
• Fluent at directing AI tools like Claude Code and Cursor, and clear-eyed with them: when an agent writes the spec, you can still catch the fault hidden in it.
• A reliability instinct: monitoring, observability, and making correctness checkable rather than assumed.
• A habit of writing things down, so what you know is available to your teammates and the agents working alongside you.
• Clear communication for a hybrid team spread across several timezones.

If you don't tick every box but you work the way we have described, write to us anyway.

The boundary keeps moving.

The split is between known work and judgement work. Known work is the patterns we understand well enough to hand to an agent, and the agents keep getting better at it. Judgement work is deciding what must be true and owning it: which commitments matter, what happens when they conflict, and what we will answer for. Where the split falls will keep changing, so we look for people who hold the judgement rather than the tasks they do by hand this month.

We review applications on a rolling basis, so earlier is better. Email your application to careers@cur8.capital with the subject "Senior Software Engineer application", and include a short note on what you have built and where you have owned what must be true, with a link to your work.