We find harmony in your code.
Whether you’re architecting something new, rewriting a legacy system, or scaling what you already have, Harmonetix finds the harmonised solution — technology and automation aligned with what your business actually needs. Consultancy, development, automation, and the right people to build it, in one place.
What we do
A single point of contact for the technical work your business needs — whether that’s one service or all of them working together.
IT Consultancy
Independent, pragmatic advice on architecture, tooling and technical strategy — cutting through the noise to find the solution that fits your business, not just the trend.
Bespoke Development
End-to-end software development — architecting new systems from scratch or extending what you already have — built to be maintainable long after the first release ships.
Process Automation
Automating the repetitive, manual, error-prone parts of your operations so your team can focus on the work that actually needs a human.
Developer Hire
Flexible contract developers who plug straight into your team, engaged Inside or Outside IR35 depending on the shape of the work.
Cloud & DevOps
CI/CD pipelines, cloud infrastructure and deployment automation across AWS, Azure and GCP that make shipping software boring — in a good way.
Technical Audits & Code Review
A clear-eyed, independent look at your codebase or architecture: what's solid, what's risky, and what to fix first.
Legacy Modernisation
Rewriting and migrating legacy systems onto foundations your team can actually understand, extend and trust.
How we work
A simple, repeatable process for finding the harmonised solution — whether that’s a greenfield build, a legacy rewrite, or anything in between.
Discover
Understand your business, your systems and your constraints before writing a line of code or proposing an approach.
Align
Map the ideal technical solution to your actual business goals — not just the shiniest available tech.
Build
Ship clean, well-tested software and automation, iteratively, with visibility at every stage.
Harmonise
Bring the pieces into alignment — systems, processes and people working together instead of against each other.
Support
Stay engaged after launch, as a contractor, consultant, or extension of your existing team.
Inside or Outside IR35 — whichever fits
IR35 is UK tax legislation that determines how a contractor engagement is taxed, based on whether the working relationship looks like genuine self-employment or disguised employment. Harmonetix can supply developers under either model, scoped correctly from the start.
Embedded in your team
Taxed broadly like an employee via PAYE (typically through an umbrella or agency), working under your direction alongside your existing team. A natural fit for longer-term, day-rate roles where the contractor operates like part of the headcount.
Genuinely independent delivery
Engaged as a true independent contractor through Harmonetix, with control over how and when the work gets done — typically scoped around a project, deliverable, or fixed outcome rather than ongoing hours.
This is a general overview, not tax advice. Status is assessed case by case and clients should confirm determinations with their own advisor.
Let’s bring it into harmony
Tell us what you’re building or fixing — a new project, a legacy rewrite, an automation gap, or a hire — and we’ll get back to you.