Custom AI, built inside your business.
We embed senior engineers inside scaling companies to build custom software — with the ownership of an in-house team and the speed of a startup.
· Case study
LIVE
Not a vendor. An embedded team.
Consultancies sell you slides. Dev shops sell you tickets. We do neither — we put senior people inside your business and build the thing, the way an in-house team would, only faster.
Senior by default
No juniors learning on your budget. You get engineers who've architected and shipped platforms at scale — in the room, on your standups, owning outcomes.
Inside your stack
We work in your codebase, your tools, your context. Not a black-box deliverable thrown over a wall — a team that understands the business it's building for.
Yours to keep
Clean, documented, handover-ready code. When the engagement ends, your team owns everything. No lock-in, no dependency on us to keep the lights on.
Embed
We join your standups, your Slack, your codebase. Map the systems, the data, and the bottleneck that matters most.
First ship
A working slice in production — small, real, and used by your team. Proof over promises, early.
Compound
Weekly releases against the roadmap we agreed. Your team reviews every PR; nothing happens behind a curtain.
Handover-ready
Documentation, tests, and your engineers running the system. Then we decide together what's next — or wind down cleanly.
Seven ways we plug in.
Most engagements blend a few of these. We scope to the problem in front of you — not a fixed package.
Bespoke software & platform builds
End-to-end product engineering — the kind of system that runs an entire business, like the platform behind Mamedica.
Embedded AI engineering teams
Senior engineers who join your team for a defined sprint and ship production software alongside your people.
AI strategy & roadmapping
Where AI actually moves the needle for you — and, just as honestly, where it doesn't. A plan you can act on.
Automation of internal ops
Quiet, reliable systems that take the manual, repetitive work off your team's plate and out of spreadsheets.
Data & infrastructure
The pipelines, models, and foundations underneath everything — built to scale before you need it to.
Fractional CTO & tech leadership
Senior technical direction without the full-time hire. Architecture, hiring, and the hard calls.
Rapid prototyping & proof-of-concept
From idea to a working thing in weeks, so you can test a bet with real software before committing to it.
Critical software can't be built at arm's length — so we build it from the inside.
Sector fluency, not sector limits.
Business problems are rarely industry-specific — but context is everything. For each engagement we bring engineers with domain expertise in your sector.
We gave Mamedica a platform that runs the whole clinic.
Mamedica is the UK's leading medical cannabis clinic. We embedded with their team and built a bespoke MedTech platform spanning the entire business — from a patient's first eligibility check to pharmacy fulfilment and beyond.
Patient Management
One record per patient, across the whole journey.
Bookings
Eligibility, scheduling, and specialist consultations.
Video Consultations
Compliant remote appointments, built in.
Prescriptions
Issue, track and renew within clinical governance.
Pharmacy
Dispensing and fulfilment, connected end to end.
Invoices
Billing and payments tied to every interaction.
Inventory Management
Stock and supply visibility across the operation.
In The Sunday Times 100 fastest-growing private companies, 2026 — the first medical cannabis company in the ranking's 29-year history.
Read the announcement ↗Operators who've shipped at scale.
Zelph was founded by the team that built and scaled Kick Game to £60m in revenue — one of the largest resale marketplaces in Europe. We've lived the fragmented systems, the manual processes, the stack that can't keep up with growth.
Now we build for other scaling companies — small, senior teams embedded in your business, shipping the same kind of software we run ourselves.
We run our own software, too.
The Agency is one half of the business. The other is Zelph — our resale-commerce platform: the take-back, grading and multi-channel listing layer behind branded resale, live with brands across the UK & EU.
That matters for your build: we carry product-owner scar tissue into every engagement — uptime, data, payments, and what it takes to run software in production, not just ship it.
Common questions.
Straight answers about how we work, what we deliver, and what to expect.
Our engineers join your team — your standups, your Slack, your codebase, your tools. You see every commit and every decision as it happens. It's the opposite of sending requirements over a wall and waiting for a deliverable.
You do, from day one. Everything we write lives in your repositories under your accounts. When the engagement ends there is nothing to transfer and no licence to keep paying — it was always yours.
Small and senior — typically two to four engineers plus a technical lead, shaped to the problem. We'd rather put three people who've shipped platforms before than ten who haven't.
First production software ships in weeks — see the 90-day plan above. Full engagements typically run three to twelve months with a defined end state, not an open-ended retainer. Mamedica grew into a multi-year partnership because the platform kept earning its keep.
A monthly team rate, scoped to the team shape we agree before we start. No day-rate meters, no surprise invoices, and we'll tell you honestly if the problem doesn't justify the spend.
No — we build whatever the problem needs. AI earns its place in most of our work, but the Mamedica platform spans bookings, prescriptions, pharmacy, invoicing and inventory. The point is software that runs your business, not AI for its own sake.
London, UK. We embed remotely by default and come to you for the moments that matter — kick-offs, planning, and the hard conversations.
Let's build something real.
Tell us what you're scaling. We'll tell you, honestly, whether an embedded team is the right way to build it.
hello@zelph.comIntro call
A 30-minute conversation about what you're trying to build and whether we're the right team for it.
Scope & plan
We map the work, the team you'd need, and an honest view of timeline — including what we'd not do.
Embed & build
Senior engineers join your team and start shipping. You own the code from day one.