Front-end engineering
Component architecture, design systems and rendering strategies that stay maintainable as your team and your product grow.
Software consultancy · London
We build the software your business runs on.
Flextech London is an independent software consultancy. We take products from the first architecture decision through to launch and continuous delivery — front end, back end, mobile, design and SEO under one roof.
Working with UK businesses since 2019.
Built to load fast, by default
We work across
- TypeScript
- React
- Vue
- Angular
- Node.js
- React Native
- Cloud & CI/CD
Services
Everything a product needs, from one team
Most of our clients come to us with one problem and discover the next three along the way. Having design, engineering and delivery in the same place means nothing gets handed over a wall.
Back-end & APIs
Services, data models and third-party integrations built for the load you have today and the one you are planning for.
Mobile apps
One codebase for iOS and Android, native performance where it matters, and a release pipeline that is not an ordeal every time.
UI/UX design
Interfaces designed around what people are actually trying to do, handed over as a system your engineers can build from — not a flat picture.
SEO & performance
Technical SEO and Core Web Vitals work that search engines and users both reward. Measured against real numbers, not guessed at.
Cloud & DevOps
Environments, deployment pipelines and monitoring set up so that shipping becomes routine instead of an event on the calendar.
Selected work
We ship products, not just advice
The clearest way to show how we work is something we built and ran ourselves, end to end.
Our own product
Therappy — online counselling platform
Therappy connected people with mental health professionals and handled the whole appointment through to payment: browsing experts by specialism, booking a slot, meeting over video or voice, and settling up afterwards.
We designed and built all of it — the iOS and Android apps, the API and scheduling logic behind them, the live session handling, the payment flow, the marketing site and the infrastructure it all ran on.
- What we did
- Product design iOS & Android API & scheduling Video & voice sessions Payments Web & infrastructure
How we work
Four steps, no mystery
You should know what happens next at every point of a project. This is the shape most of our engagements take.
01
Discovery
We start with your constraints: timeline, budget, the systems already in place and the team who will own the result afterwards.
02
Architecture
A written technical plan before any code is committed: stack choices, data model, integration points and delivery milestones.
03
Build
Short iterations against a shared board. You see working software every week rather than a status report about it.
04
Handover
Documentation, a repository you own outright and, if you want it, an ongoing support arrangement on top.
Approach
How we prefer to work with clients
You own everything
The repository, the infrastructure and the documentation are yours from day one. No proprietary platform to stay locked into after we leave.
A direct line to the engineers
You talk to the people writing the code. There is no account management layer translating your requirements into someone else's ticket.
Performance and accessibility by default
Both are part of how we build rather than a phase someone budgets for later and then cuts. This site is a fair sample of the standard.
Clear scope, clear price
Fixed-scope projects or a monthly retainer, agreed up front. If the scope changes we tell you what it costs before we start on it.
Get in touch
Tell us what you are building.
Send a short brief — what the product is, roughly when you need it, and what is blocking you right now. We will come back with honest next steps, including if we think we are the wrong fit.