Custom software development in London
Bespoke software for London businesses replacing legacy systems and manual processes. Built remotely from Pakistan by senior engineers who scope the work and then run it.
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London
Custom Software Development for London
A great deal of London runs on software that has quietly become a liability. A fintech is boxed in by a platform built for a smaller company. A professional services firm still moves work between spreadsheets, shared drives and email because the process was never given a proper system. A healthcare provider depends on an application whose developer left years ago and whose documentation never existed. Replacing any of that is not a fashion project but the removal of risk from the middle of a working business, which is why it has to be done by people who have replaced load-bearing systems before.
That is the work we take on. We build the bespoke system, the internal platform, the workflow engine, or the integration layer that finally connects the tools you already run, so a person stops re-keying the same data three times. In London the sectors that ask for it most, financial services, professional services and healthcare, all bring real constraints: GDPR and data protection, FCA expectations in fintech, clinical safety and information governance in healthcare. We treat those as engineering decisions built in from the start, not optional extras added late in a build where they are expensive to fix.
We are not in London, and we will not pretend to be. Yarqat is registered in Islamabad and the team works from Pakistan, four hours ahead of the UK in summer and five in winter, so every working day has a window in which your morning is our afternoon. On a replacement project that window is where the important conversations happen: walking through how the old system really behaves, agreeing the cutover plan, deciding what to do about the data nobody can explain. Everything we build sits in your repositories from the first day, so the knowledge never lives only with us.
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What is specific
Built for London
Replacing a system the business depends on
The hard part of a rebuild is not the new software, it is retiring the old one without stopping the business that runs on it. We have replaced load-bearing systems and manual processes before: understanding the real behaviour of what exists, migrating data carefully, and cutting over in a way that does not gamble with operations.
GDPR and sector rules built in
London fintech, professional services and healthcare carry data protection, FCA expectations and clinical governance that are cheap to design in and painful to add afterwards. We make them architecture decisions at the start rather than a compliance scramble before go-live.
Remote, and senior
The person who scopes your project builds it, so the estimate and the delivery come from the same head rather than drifting between a sales team and a junior bench. There is no account manager between you and the engineers, so a question asked in your morning reaches someone who can answer it, in the part of the day we share.
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Scope
What we build
Project delivery, owned end to end, for London clients.
- Bespoke internal platforms and workflow systems that replace manual processes stitched together from spreadsheets, shared drives and email
- Replacements for legacy or end-of-life applications, including careful data migration and a cutover that does not put the running business at risk
- Integrations that connect the systems you already operate, so data stops being re-keyed by hand across accounting, CRM and operational tools
- Software built to GDPR and UK data-protection requirements from the start, with the governance fintech, professional services and healthcare expect
- A straight build-versus-buy assessment first, so you do not commission custom software where a well-fitted off-the-shelf product would genuinely do
- Ownership from the first commit: source, documentation and the ability to operate and change the system with your own team or another supplier
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Also in this city
What else we build in London
Custom Software Development in London: common questions
We depend on an old system every day. How do you replace it without disruption?
Carefully, and with a plan that treats the running business as the first priority. Replacing a load-bearing system means understanding how the current one really behaves, migrating data properly, and cutting over in stages or with a fallback rather than a risky big-bang switch. We have done this kind of replacement before, and the approach is built around not gambling with the operation that depends on the software.
Should we build custom software or buy an off-the-shelf product?
Often the honest answer is buy, and we will say so. Custom software earns its cost when your process is genuinely a competitive difference, when no product fits without distorting how you work, or when integration and data ownership matter more than a package can offer. When a well-fitted off-the-shelf tool would do, building bespoke is a waste of your money, and we would rather tell you that at the first conversation.
Our sector is regulated. Can you handle GDPR, FCA or clinical governance requirements?
Yes, and we design for them from the start. GDPR and UK data protection apply across the board, and fintech, professional services and healthcare each add their own expectations, FCA in financial services, clinical safety and information governance in healthcare. These are architecture decisions made early rather than a compliance exercise bolted on before launch, because retrofitting them is both expensive and risky.
You are based in Pakistan. How does that work for replacing a critical system?
Through preparation. We spend the early weeks on video calls and screen shares with the people who use the current system, documenting how it really behaves before we touch it. Cutovers are planned in writing with a rollback, scheduled for a quiet point in your week, and our working day overlaps your morning, so there is always a shared window for the decisions that matter. Yarqat has no London office, and we would rather say so up front.
Who actually builds the software, the people we meet or someone else?
The people you meet. We are deliberately small and senior, so the engineer who scopes your project is the one who runs the delivery. That matters most on a custom build replacing something the business relies on, where a handoff from a senior sales team to a junior delivery bench is exactly where estimates drift and problems surface too late.
Custom software development in London?
Tell us what you are building. We serve London remotely, with no local office and no account manager in between, so the person who reads this is the one who would run the work.
- 01A senior engineer reads it. Not a form queue, and not an account manager.
- 02We reply either with questions or with a straight answer that we are not the right fit.
- 03If it looks like a fit, a technical call with the person who would actually run the delivery.
- 04Then scope, effort and risk in writing, before anyone signs anything.