UK senior software engineering partner

We build the software you need — and keep it healthy.

CodeFirst designs, builds, modernises and maintains the systems teams depend on — senior engineering judgement and AI-assisted delivery, from discovery through long-term support.

13+ yrsshipping production systems
95%client rehire rate
UKsenior, in-house engineers
Engineers behind work for

Trusted for critical systems, product builds and long-term platform support across research, enterprise and specialist teams.

2011founded, still hands-on
10+ yraverage engineer experience
4UK offices
AIinside delivery & review
How we work

Small-team focus with enterprise-grade habits.

The engagement shape follows the job — discovery sprint, build pod, support retainer, or a blend for products already in motion.

01

Scope the real delivery problem

We clarify users, risks, integrations and what success looks like before prescribing a team shape.

02

Build with senior engineering ownership

Technical decisions stay close to delivery — pragmatic architecture, short feedback loops, visible progress.

03

Keep the system improving after launch

Support is not a ticket graveyard. We protect reliability, remove friction and keep the roadmap moving.

Free tools

Planning tools from a team that ships — and sold PlanITpoker.

View all tools
Budgeting

App Cost Estimator

Estimate likely build effort and cost before a discovery call or procurement conversation.

Coming soon →
Forecasting

Story Point Calculator

Turn estimates, capacity and velocity into a clearer sprint or release forecast.

Coming soon →
Agile planning

Velocity Calculator

Track team velocity across sprints and forecast when the backlog will actually be done.

Coming soon →
AI operations

LLM Token Counter

Check token usage and keep AI feature costs visible before they reach production.

Coming soon →
Why teams bring us in
CodeFirst put senior people right next to the code and stayed accountable for the result. Fewer engagements, clearer ownership, and a system we can actually maintain.
DR
Delivery leadEnterprise research platform

Have a system that needs building, fixing or looking after?

Tell us what you're trying to ship and what's getting in the way. We'll help you choose the smallest useful next step.