Best Full Stack Development Services in London to Hire

London's fast-moving tech scene demands software that scales as fast as you do. Keel delivers production-ready full stack development — custom backends, APIs, internal tools, and operations platforms — built and deployed in weeks, not months. Whether you're a Series A startup in Shoreditch or an established operator in the City, Keel gives you complete ownership of every system you build.

Full stack developers collaborating on a custom software project in a modern London office

Our Full Stack Development Services

From production-ready backends to custom operations platforms, we build every layer of your stack with precision and speed.

Keel Platform

A programmable, code-first operations platform delivering a complete backend with database, APIs, auth, permissions, observability, and internal tools — all deployed on serverless infrastructure, ready to scale instantly.

Keel Studio

Go from prompt to production backend in under two minutes. Describe your system and receive a fully deployed backend — including database, APIs, auth, and internal tools — on serverless infrastructure built to scale.

Custom CRM Development

Build bespoke CRM systems that mirror your exact operations, with custom alerts, performance monitoring, workflow automation, role-based permissions, and seamless API integrations with your existing tools.

Internal Tools

Automatically generate clean, fast, and intuitive internal tools from your Keel schema — giving operations, customer service, and finance teams instant, secure access to the data they need, with zero training required.

Build for Me Service

Keel's team works with you in real-time to model a fully custom platform around your actual business process. Go live in weeks, with complete ownership handed over to your team upon delivery.

Managed Migration Service

Transition smoothly to the Keel platform with a fully managed migration service. Keel handles the complexity of moving your existing systems so your team can hit the ground running with minimal disruption.

Code-First. Production-Ready.

Full Stack Development That Gives You Total Ownership

London operators know that speed and flexibility are non-negotiable. Keel's full stack development services deliver production-grade backends, APIs, and custom platforms in weeks — not the months that traditional development agencies demand. Built on engineering best practices with end-to-end type safety, version control, and serverless infrastructure, every system you build on Keel is one you truly own, can iterate on freely, and scale with complete confidence as your business grows.

Developer working on a full stack application using a code-first platform with multiple API endpoints visible
Trusted By Operators

Success Stories

See how fast-moving businesses like Bravely, HIVED, Klira, and Egg have built and scaled with Keel.

"Keel is incredibly powerful. Three days writing code and it all just works from the first attempt! The Schema allows for super easy and intuitive data modelling, particularly around the relationship syntax with all foreign keys sorted. I also just love the DevEx! It's well thought-out and far superior to..."

Jay

"Keel is truly one of the most obvious wins I've ever seen in the Ops world"

Usman Mahomed

"Keel's built-in permission engine is incredibly secure and powerful — No other service does it this well!"

Jay

"Keel is incredibly powerful. Three days writing code and it all just works from the first attempt! The Schema allows for super easy and intuitive data modelling, particularly around the relationship syntax with all foreign keys sorted. I also just love the DevEx! It's well thought-out and far superior to..."

Jay

"Keel is truly one of the most obvious wins I've ever seen in the Ops world"

Usman Mahomed

"Keel's built-in permission engine is incredibly secure and powerful — No other service does it this well!"

Jay

"Keel is incredibly powerful. Three days writing code and it all just works from the first attempt! The Schema allows for super easy and intuitive data modelling, particularly around the relationship syntax with all foreign keys sorted. I also just love the DevEx! It's well thought-out and far superior to..."

Jay

"Keel is truly one of the most obvious wins I've ever seen in the Ops world"

Usman Mahomed

"Keel's built-in permission engine is incredibly secure and powerful — No other service does it this well!"

Jay
The Keel Difference

Why Choose Keel for Full Stack Development?

Keel isn't just another development shop — it's a platform built by operators, for operators who need real ownership and real speed.

From Prompt to Production

Deploy a fully functional production backend with APIs, auth, and a database in under two minutes — giving London teams an unmatched speed-to-market advantage.

Complete Ownership

Every system you build is yours — with version control, full local development, open-source components, and direct database access, no vendor lock-in ever.

Enterprise-Grade Security

ICO-registered and built with deny-by-default access control, row- and role-based permissions, and OpenTelemetry observability to meet the compliance demands of London's regulated industries.

Backed by Leading Investors

With $6m in seed funding from Earlybird and LocalGlobe, Keel is a platform built to last — giving UK businesses a reliable, long-term full stack development partner.

Built by Operators, for Operators

Meet the experienced team behind Keel's full stack development platform.

Keel was founded in 2021 by three former executives from Echo — Europe's fastest-growing online pharmacy, later acquired by Pharmacy2U. At Echo, the founding team served as CEO, CTO, and CPO, building custom software that shipped 50,000 medicines to 600,000 customers daily and scaled the business to $130m in annual revenue. Having experienced first-hand how inflexible legacy software stifles growth — particularly in highly regulated environments — they built the solution they wished had existed. Keel is now trusted by ambitious operators across the UK, from London-based logistics disruptors to regulated health and commerce businesses, and has raised $6m in seed funding from leading European investors Earlybird and LocalGlobe.

$6m Seed FundingRaised from Earlybird and LocalGlobe, backing Keel's mission to empower operators everywhere
4 Years in BusinessBuilding and refining the modern ERP alternative since 2021, with deep roots in UK operations
$130m Revenue ScaledAnnual revenue achieved by the founders' previous company using the same engineering principles behind Keel

Frequently Asked Questions

Are full-stack developers in demand in the UK?

Yes — full-stack developers remain among the most sought-after technical professionals in the UK, particularly in London's thriving tech ecosystem. Demand is driven by the growth of SaaS, e-commerce, and operations-focused businesses that need end-to-end custom systems. Platforms like Keel address this demand by enabling teams to build and deploy production-grade full stack systems rapidly, without needing a large in-house engineering team.

What is full stack development and what does it include?

How quickly can Keel build and deploy a full stack application?

Do I retain ownership of the software built on Keel?

What types of businesses does Keel's full stack development suit?

How does Keel integrate with our existing tools and tech stack?

Is Keel compliant with UK data protection regulations?

What ongoing support is available after my platform is built?

Still Have Questions About Our Full Stack Services?

Talk to Keel's team for a no-obligation consultation tailored to your project needs.

Certified & Trusted

Awards and Recognition

UK Information Commissioner's Office ICO registration badge

ICO Registered

Registered with the UK Information Commissioner's Office for compliant data handling

Seed funding badge showing Keel backed by Earlybird and LocalGlobe investors

$6M Seed Funded

Backed by Earlybird and LocalGlobe, leading European venture investors

Open source software certification badge for Keel platform on GitHub

Open Source Platform

Transparent, community-vetted codebase built on engineering best practices

Ready to Build Your Full Stack Platform?

Tell us about your project and a Keel specialist will get back to you to discuss your requirements, timeline, and the fastest path to a production-ready system.

Contact Us Today

For immediate assistance, feel free to give us a direct call at You can also send us a quick email at bobbi@keel.xyz