Engineering intelligent systems for the real world.
We unite software craftsmanship with deep engineering rigour — designing, building and running the platforms, products and research that move ambitious organisations forward.
Seven disciplines. One engineering standard.
From building design and structural engineering to shipped software and applied research — a single, accountable partner across the full lifecycle.
IT & Technology Consultancy
Cut through complexity. We audit systems, design target architectures and build pragmatic roadmaps that de-risk transformation.
- Cloud architecture & migration (AWS · Azure · Cloudflare)
- Digital transformation & modernisation
- Technical due diligence & architecture review
- Fractional CTO & engineering leadership
Custom Software Development
From greenfield products to mission-critical platforms — built with the discipline of engineers and velocity that compounds.
- Web & mobile application development
- SaaS platforms & multi-tenant systems
- API design, integrations & automation
- DevOps, CI/CD & cloud-native deployment
Engineering Consulting
Analytical depth for complex technical problems — modelling, simulation and systems engineering grounded in data.
- Systems engineering & requirements analysis
- Modelling, simulation & digital twins
- Data engineering & analytics pipelines
- Process optimisation & automation engineering
Applied R&D
Frontier ideas turned into working systems — applied research in AI and emerging tech, with a clear path to production.
- Applied AI & machine learning R&D
- Proof-of-concept & rapid prototyping
- Algorithm design & computational research
- R&D tax-credit-eligible engineering
Structural & Civil Engineering
Design and calculations for UK building projects — from loft conversions and extensions to steel and concrete frames, ready for Building Control.
- Structural design & calculations to Eurocodes
- Beam sizing, connection details & padstones
- Loft conversions, extensions & removed walls
- Building Control submission packages
BIM, MEP & Drafting
Outsourced design capacity for architectural and engineering practices — extra hands on demand, without another in-house hire.
- Revit / BIM modelling, coordination & clash detection
- Architectural drawings & planning packs
- Mechanical, electrical & BMS layouts
- As-builts, red-lines, revisions & CAD overflow
BMS & Building Controls
Controls engineering for commercial buildings — design, software, commissioning and fault-finding, delivered as a subcontract resource to the trade.
- Controls design, points schedules & cause and effect
- Software engineering, commissioning & witnessing
- BACnet, Modbus & KNX integration and head-end graphics
- Legacy system takeover, migration & site fault-finding
Building controls engineering, as your subcontractor.
We provide BMS capacity to controls companies, M&E contractors and facilities providers across the UK. We do not tender for main contracts and we do not supply equipment — so we are never competing with you on a project we support.
Design & specification
Points schedules, cause & effect, controls specs and tender support.
Software & commissioning
Strategy engineering, head-end graphics, witnessing and handover.
Integration
BACnet, Modbus and KNX — bringing legacy and standalone plant onto one head-end.
Takeover & fault-finding
Adopting someone else's install, tracing faults and re-commissioning plant.
AI fault detection
Analytics over trend data that flags what the alarm list never raises.
Overflow capacity
Extra engineers when your own team is committed elsewhere.
The systems we work across
Trend · Tridium Niagara · Siemens · Schneider · Cylon · Distech — plus open protocol integration via BACnet, Modbus and KNX.
An analytics layer over the BMS
Trend data is fed to models that learn what normal looks like for a building, then flag passing valves, simultaneous heating and cooling, sensor drift and plant degrading ahead of failure — reported in plain English, not another alarm page.
How we engage
Day rate, package price or ongoing supply-chain agreement. We can provide capability details for your approved subcontractor list.
Where engineering meets impact.
The domains we build in — from cloud platforms and applied AI to secure, data-driven systems.
The full engineering lifecycle, under one roof.
Cloud & Infrastructure
Scalable, secure, cost-efficient platforms on modern IaC.
AI & Machine Learning
Pragmatic AI, from data pipelines to deployed models.
Security & Compliance
Governance aligned to UK & ISO standards.
Data Engineering
Reliable pipelines, warehouses and analytics.
Product & UX Design
Research-led design paired with engineering feasibility.
Support & Managed Services
Maintenance and monitoring that keep systems running.
Engagement models that fit the way you build.
Flexible commercial models — pick one, or blend them as you scale.
Project delivery
A defined brief, a costed plan and a clear deadline — a product, a rebuild or a well-scoped feature, delivered end to end.
Monthly retainer
A dedicated slice of our team every month for continuous delivery, iteration and support — momentum without the overhead.
Fractional & advisory
Fractional CTO, architecture reviews or an embedded specialist — senior leadership exactly when you need it.
A disciplined path from idea to impact.
Discover
We immerse in your goals, constraints and systems to define the real problem worth solving.
Design
Architecture, prototypes and a costed roadmap — validated before a line of production code.
Build
Iterative delivery in tight loops, with automated testing and continuous visibility.
Scale
Launch, monitor, optimise and support — value that compounds over time.
Engineers first — for founders, enterprises and everything in between.
Codexa Engineering is a UK-registered technology and engineering consultancy. We combine the creativity of a product studio with the discipline of an engineering practice — a single, accountable partner across strategy, software, engineering and research.
We believe great technology is quiet, dependable and built to last. So we build accordingly.
Let's build something worth engineering.
Tell us where you're headed. We'll bring the strategy, the software and the science to get you there.
The things practices ask us first.
If yours isn't here, ask us directly — we'll give you a straight answer.
Do you work on UK projects, and to UK standards?
How does pricing work?
Will you work to our templates and title blocks?
Do we get the native files, or just PDFs?
Is our project information kept confidential?
How quickly can you turn work around?
What happens if the brief is incomplete?
Can we try you before committing?
Start the conversation.
Whether you have a defined brief or just an ambition, we'd love to hear from you. Expect a considered reply within one business day.