Out of the mainframe era
COBOL, PL/1 and assembler estates documented, tested and translated to modern languages. Devin builds the characterisation tests first, so every behaviour of the legacy system is captured before a line is migrated.
Use cases
Devin for the UK Public Sector.
Decades of legacy, shrinking budgets and rising expectations. These are the applications we advise on, evaluate and prove with central government, local authorities and public bodies.
Modernisation · Migration · Citizen services · Resilience
Advisory-led, evidence-backed
01 / Legacy modernisation
The legacy estate, finally movable.
Government runs on systems its original authors have long since retired from. Devin reads, understands and modernises them at a pace that turns decade-long programmes into deliverable projects, with the behaviour of the old system preserved and evidenced at every step.
Ageing applications, renewed
End-of-life frameworks, unsupported runtimes and departed-contractor codebases upgraded systematically: dependency by dependency, service by service, with full audit trails for programme boards.
Escaping the licence trap
Proprietary database estates migrated to modern, open alternatives: schemas converted, stored procedures rewritten and reconciliation reports produced, cutting licence spend that no longer buys value.
02 / Cloud migration
To the cloud, with the paperwork done.
Migration programmes stall on the sheer volume of careful engineering: refactoring, configuration, testing and assurance. Devin does the volume; your teams and ours direct the judgement.
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Assess
Estate discovery & migration cases
Devin maps applications, dependencies and data flows across the estate, producing the evidence base for migration decisions and spend approvals.
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Refactor
Cloud-ready, not just lifted
Applications refactored for cloud-native operation: containerisation, infrastructure as code and managed services, avoiding the lift-and-shift bills that follow lazy migrations.
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Migrate
Runbooks, rehearsals, rollback
Migration executed as tested, versioned code with rehearsed cutovers and rollback plans, and every step evidenced for assurance and audit.
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Optimise
Cost and carbon, continuously
Post-migration rightsizing and continuous cost engineering, so cloud spend serves citizens rather than idle capacity.
03 / Citizen services & delivery
Digital services citizens actually finish.
The backlog of digital service work in every department outstrips any realistic hiring plan. Devin changes the arithmetic.
GOV.UK-standard services, faster
New citizen-facing services designed and built to the GOV.UK Design System and Service Standard, iterated in days rather than quarters.
WCAG compliance at estate scale
Accessibility regulations apply to every page of every service. Devin audits and fixes accessibility issues across entire estates, with evidence for monitoring bodies.
Systems that finally talk
APIs and integrations between departmental systems, casework platforms and shared services, built and maintained so data moves instead of being re-keyed.
04 / Security & cyber resilience
Defending the systems the country runs on.
Public bodies are targeted precisely because their estates are old and their data is valuable. Devin hardens both sides of that equation.
Patched at estate scale
Devin monitors advisories, identifies exposure across every repository and system, and raises tested remediation, aligned to the Cyber Assessment Framework and NCSC guidance.
From incident to fix to lessons
Root cause traced through the codebase, the fix shipped and the post-incident review drafted, with timelines and evidence for resilience reporting.
Compliance as a by-product
Security controls maintained as tested, versioned code, so accreditation and audit evidence is generated by the work itself rather than assembled after it.
05 / Public value & governance
Built for how government actually buys and governs.
Adopting agentic engineering in the public sector is as much about governance as technology. That is precisely where we advise.
Evidence for spend controls
Evaluations and pilots designed to produce the evidence that business cases, spend approvals and gateway reviews demand, before major commitments are made.
Transparent, accountable adoption
Human oversight, auditability and clear accountability designed into every deployment, aligned to public sector AI guidance and the expectations of ministers and the public.
Capability that stays in-house
Civil service and public sector engineering teams enabled to direct and govern agentic development themselves, reducing long-term dependence on external suppliers.
Every use case above begins with an evaluation, not a procurement.