Why NexGen
Architecture-led, not staff augmentation.
Most SI engagements assign whoever is free that week and rotate people through your project as it runs. We do it differently: a senior architect is named to your project at the start and stays accountable for the design and the outcome all the way through, not a rotating cast of contractors billed by the day.
AI-native delivery.
On most projects, AI is a tool someone reaches for occasionally. On ours, it’s built into every role. Architects, engineers and testers each work alongside an AI agent that takes on the full weight of their work, not just the repetitive parts, almost like every person has the world’s smartest assistant carrying their workload. People stay in charge of every decision; the AI is what makes the pace possible.
Governed by design.
Speed usually comes at the cost of oversight. Ours doesn’t, because every stage of the project has a checkpoint: a named person reviews the work before it moves forward, and that decision is recorded at the time it’s made. Nothing reaches your systems without someone’s name against it.
Evidence, not status decks.
Instead of a weekly slide deck telling you progress looks fine, you receive the real project documents as they’re produced — requirements, designs, test results and sign-off records — delivered into your own systems so your team can check them at any point, not just at the end.
Outcomes, not hours.
We agree upfront exactly what “done” looks like for a piece of work, and you pay once it’s delivered and proven, not for the hours or days it took us to get there. If something takes longer than planned, that’s a cost we absorb, not one we pass on to you.
No channel conflict.
If you already work with another consulting firm, we’re not here to replace them. We’ll deliver alongside your existing partner under their engagement, or step back entirely, so bringing us in never puts a relationship you already have at risk.
THE PATTERN WE KEEP MEETING
Metering and device integration. Event-driven data flows. One customer view. Workforce scheduling links. Billing connectivity. Regulatory audit trails.
Replacing end-of-life platforms
CIOs and Enterprise Architects
Core platforms are going out of support, and the business cannot accept an outage while they are replaced.
We redesign each interface on modern architecture and prove it behaves like the one it replaces before anything is switched over, with an architect owning every design decision.
Replaced end-of-life IBM platforms for a major UK water utility, redesigning 200+ interfaces as real-time and API-led on Salesforce and MuleSoft.
Handling data from millions of devices
Data and network operations leads
Smart meters and field devices never stop sending, and batch-era systems cannot turn that into a reliable current picture.
We build event-driven data flows so information moves the moment it is produced, and one customer view that field crews and contact centres both trust.
The same programme delivered an event-driven core and a single customer view across the estate.
Cutting duplicated integration work
Integration owners
Every new project rebuilds connections that already exist somewhere else, so cost and risk multiply quietly.
We build reusable integration assets once and document them, so the next project extends what exists instead of starting again.
Reusable assets removed 10 to 15 duplicate integrations from the utility's estate.
Proving compliance to environmental regulators
Regulatory and compliance leads
Regulators expect provable data handling, and reconstructing the trail after the fact is slow and contestable.
Approvals and supporting documents are recorded at the moment each change is made, so the audit trail already exists when it is asked for.
Every interface was designed, documented and reviewed before it shipped, with documentation held per integration point.
Typical scope on a utilities engagement
Roadmap Component Key
01 — Discover, the ask
Discovery agent
AI runs this stage: Reads your systems and data end to end and produces the full current-state picture, carrying that entire stage of work.
Approval gate: Enterprise Architect or Head of Risk. Their sign-off is timestamped and logged before the next stage opens.
02 — Design, architecture
Design agent
AI runs this stage: Works through the complete target architecture and every realistic option, not just the obvious one.
Approval gate: Chief Architect. Their sign-off is timestamped and logged before the next stage opens.
03 — Build, code and configuration
Build agent
AI runs this stage: Writes and tests the code and configuration for the whole scope in parallel, not one piece at a time.
Approval gate: Engineering Lead. Their sign-off is timestamped and logged before the next stage opens.
04 — Verify, test evidence
Test agent
AI runs this stage: Checks the new system’s behaviour against the old one on every interface, not a sample of them.
Approval gate: QA or Compliance Lead. Their sign-off is timestamped and logged before the next stage opens.
05 — Release, to production
Release agent
AI runs this stage: Prepares the complete release and rollback plan for the whole change, ready to execute.
Approval gate: Your own named sign-off. Their sign-off is timestamped and logged before the next stage opens.
06 — Operate, run and improve
Ops agent
AI runs this stage: Watches the live system continuously and prepares every anomaly for review, not just the obvious ones.
Approval gate: Ops Lead. Their sign-off is timestamped and logged before the next stage opens.
PROVEN AT NETWORK SCALE
Major UK Water Utility
200+ interfaces redesigned · 8 months from kickoff to full cutover · 10 to 15 duplicate integrations removed · documentation delivered per integration point
A major UK water utility was running end-of-life IBM platforms serving millions of devices, with compliance obligations that made a risky migration unthinkable.
Over 8 months, our architects and engineers, each working alongside an AI agent carrying their share of the analysis and build, redesigned 200+ interfaces as real-time and API-led on Salesforce and MuleSoft, with an event-driven core and a single customer view.
The utility holds documentation for every integration point, plus reusable assets that removed 10 to 15 duplicate integrations from the estate.
Every interface was designed, documented and reviewed by a named person before it shipped, so nothing reached the network unchecked.
THREE WAYS TO BEGIN
Brownfield & Legacy Modernisation
"Our core platform is going out of support and everyone says it's too risky to touch."
A phased replacement where each interface is proven against the old one before cutover, so the network never depends on an untested change.
Scoped per phase, with working software from the first sprint.
Managed Services
"The platform runs, but every change is slow and we can't show a regulator what happened."
Day-to-day change delivered under the same governance as a major programme, so the regulatory record builds itself as you go.
Rolling engagement, scoped monthly.
Salesforce & MuleSoft
"We're paying for the licences and only using a fraction of what they do."
The platforms you already own, implemented against real network use cases and documented so your own teams can extend them.
Scoped per use case, typically weeks per delivery.
