Backend and API development in Edinburgh
Pension and investment platforms in Edinburgh carry rules older than most of their engineers. Unit pricing, switches, transfers in and out, product wrappers, regular contributions, and all the exceptions a decade of product changes has left behind. The core administration system usually works; the trouble is everything bolted to it, where a new adviser platform or a transfer service is one more integration built in a hurry.
We build the services around the core: APIs that expose what the administration system knows without letting anyone write to it carelessly, queues that process transfers and switches exactly once, and a record of every instruction that anyone can trace later. We work in Node and Python on PostgreSQL, keep business rules in one place rather than scattered across integrations, and write the documentation your own team will need after we leave.
Edinburgh is a money town with a major research university in the middle of it, and its software work reflects both. On one side sit the fund managers, life and pensions firms and banks: Baillie Gifford, NatWest Group's headquarters at Gogarburn, and a long tail of platforms, administrators and wealth managers. On the other side sit the University of Edinburgh's informatics and data science groups, and EPCC, which hosts the national supercomputer ARCHER2 and was chosen in 2025 as home for the next one, with up to £750 million of government funding.
The financial side needs systems that are careful rather than fast. Pension and investment products carry decades of rules, and much of the administration runs on platforms that predate the people maintaining them. Customers expect to see their pot, their charges and their options clearly on a screen, and advisers expect the platform to answer as fast as the one they used yesterday. So the work is usually integration, data, reporting and customer screens around an old core, with every change tested before it ships. Fintechs sit in between, often selling back into those same banks and fund managers.
The university side needs something different: research code that works on a GPU in a lab and has to become a product that works for a paying customer. That gap, between a model that is right and a service that is reliable, is where many spin-outs stall. Hiring is competitive. ITJobsWatch puts the median advertised software engineer salary in Edinburgh at £70,000 over the six months to September 2026, on a smaller sample than London, and the banks and fund managers take many of the experienced engineers.
Working with us from Edinburgh fits the day you already have. Four hours of every working day overlap with yours, set across your morning, so stand-up, review and the decisions that follow happen live with the engineer who writes the code. The rest of the day runs on written updates and pull requests in your own Slack, GitHub and Linear, waiting for you after lunch, with runbooks and architecture notes written as the work goes.
We are the right fit for a defined piece of work, a spin-out's first production system, or a project that needs senior engineers this quarter while your own hiring catches up. Start with a fixed-price two-week piece and judge us on what ships. For agencies, we work white-label under your name, in your repositories and tools.
Four ways this arrives.
We read the code, write down what it does versus what everyone believes it does, and give you the list of the five things most likely to page someone at night. Then we fix those first.
Usually queries, not architecture. We profile under real traffic, fix the plans and the indexes, and only then discuss whether anything needs splitting apart.
A mobile client, a partner integration, a public API. We design the contract first, version it properly, and write the docs your consumers will read.
Jobs that silently vanish, retries that duplicate charges, a queue nobody monitors. We make it idempotent, observable, and boring.
A moderated messaging backend where sends acknowledge in-band and the review runs behind them.
Read the write-up →Asked by Edinburgh teams.
How do you work with teams in Edinburgh?+
Four hours of every working day overlap with yours, set across your Edinburgh morning, so stand-up and code review happen live. We join your calls and work in your tools: Slack, GitHub and Linear. You talk directly to the engineer who writes the code. The rest of the day carries on in pull requests and written updates that are waiting for you after lunch, with runbooks and architecture notes written as we go.
Do you build for Edinburgh fund managers and pensions firms?+
Yes. For pensions and investment platforms we build services around the administration core: APIs that expose what it knows, transfers and switches processed exactly once, and tools for the exception cases that live in spreadsheets today. For fund managers we build investment data pipelines that trace every figure back to its feed, research search that cites its sources, and customer screens that make pots and charges clear.
How does your rate compare to hiring in Edinburgh?+
ITJobsWatch puts the median advertised salary for a software engineer in Edinburgh at around £70,000. Our published rate is $35/hour with a $5,000 minimum, or $5,400 a month for one engineer embedded in your team. There is no recruiting time and no employment overhead, and we can start within days of the first call. A fixed-price two-week piece at $2,800 lets you judge us on output first.
Can you work with a university spin-out?+
Yes, and it is a good fit. Spin-outs usually have strong research code and nobody whose job is running it in production. The research team stays in charge of the science, and we build what surrounds it: the API, the data handling, the deployment and the monitoring. A fixed-price two-week piece fits a grant or accelerator budget, and the code belongs to the company from the first commit.
Can you work in our existing codebase?+
Yes, and it is most of what we do. We do not require a rewrite as a condition of working with you. If we think a rewrite is genuinely the right call we will say so, with the reasoning and the cost, and you can decide.
What if the backend is in a language you do not list?+
Then we will tell you. We are useful in Node, Python and TypeScript. We can read Go and PHP well enough to migrate off them. We would not take a Rust or Elixir project and learn it on your budget.
Do you write tests?+
For anything with money, permissions or data loss in it, yes. We do not chase a coverage number. We will tell you which parts are covered and which are not in the handover notes.
Who owns the code?+
You do, from the first commit. Repositories live in your organisation. If we set them up, we transfer them before the first invoice.
What happens when the engagement ends?+
You get runbooks, architecture notes and a recorded walkthrough. We stay available for questions for a month at no cost, because a handover that needs us on retainer is not a handover.