Product Design & UX
Design systems, prototypes, and accessibility audits, interfaces engineered for the workflows your users actually run.
FigmaStorybookWCAG 2.2
Software DevelopmentCustom Software Development
Custom software engineered to outlast the contract
Architect-led discovery, full-stack engineering, and long-tail support, bespoke platforms designed around your operating model and shipped by senior teams that stay accountable past go-live.
0+Platforms shipped to production
0 wksMedian time to first usable release
0%Of clients renew engagement
Build with us
End-to-end software services we deliver
Engage us for a single discipline or compose a full programme. Every engagement is run by a named delivery lead with a senior engineering bench behind them.
Enterprise Software Development
Mission-critical line-of-business platforms: workflow, operations, and back-office systems engineered for scale, audit, and integration.
Engineering depth
The disciplines behind every platform we ship
Custom software is rarely one stack. Our delivery squads compose specialists from each discipline so the build, the platform, and the product are owned under one accountable line.
Frontend Engineering
Type-safe React and Next.js apps with measured Core Web Vitals, components that ship to design tokens, not screenshots.
ReactNext.jsTypeScriptTailwind
Backend & APIs
Typed services, event-driven workflows, and contract-tested APIs: Node, Go, .NET, or Python depending on the operating estate.
Node.js.NETGoPythonGraphQL
Mobile Engineering
Native iOS / Android and React Native: offline-first state, native module integration, and store-release pipelines included.
SwiftKotlinReact NativeFlutter
Cloud & DevOps
Infrastructure-as-code, golden CI/CD pipelines, and observability, production engineering on AWS, Azure, or GCP from day one.
AWSAzureTerraformKubernetes
QA & Security
Test pyramids, automated regression, and security review baked into every PR, auditor-ready release evidence on demand.
PlaywrightCypressOWASPSOC 2
End-to-end coverage
Every phase of the software lifecycle, under one team
From the first discovery workshop to long-term evolution. Each phase produces concrete artefacts your stakeholders can review: no opaque hand-offs, no surprise scope.
- 01
Discovery & Strategy
Architect-led workshops to align scope, success metrics, and operating constraints before a line of code is written.
- Solution blueprint
- Risk & cost model
- Roadmap & milestones
- 02
Design & Architecture
Reference architecture, API contracts, and design system, the engineering foundations for everything that follows.
- Reference architecture
- API contracts
- Design system
- 03
Build & Iterate
Two-week sprints with demo, review, and reprioritisation: working software in your environment from the first release.
- Working software
- Sprint demos
- Trunk-based delivery
- 04
QA & Hardening
Automated regression, performance, and security testing: release evidence captured for your auditors, not invented after the fact.
- Test pyramid
- Performance baseline
- Security review
- 05
Launch & Cutover
Zero-downtime release with rollback gates, runbook drills, and an on-call rota the day the product goes live.
- Release runbook
- On-call rota
- Rollback drills
- 06
Evolve & Support
Managed support, SLO-backed operations, and a continuous roadmap: the team that built it stays accountable for it.
- SLO-backed support
- Quarterly roadmap
- Cost & FinOps reviews
Our engagement workflow
Seven stages from first call to ongoing support
Every engagement walks the same path, sized to your problem, but with the same verification gates baked in.
Phase 01Discovery
Two-week paid sprint. Architect-led. Output: regulator map, costed roadmap, signed scope.
Phase 02Planning
Pod composition, sequenced milestones, change-control governance, and risk register.
Phase 03Design
Reference architecture, threat model, design system, and acceptance criteria locked.
Phase 04Development
Weekly demos, trunk-based, CI/CD from day one. Code reviewed against spec at every gate.
Phase 05Testing
Unit, integration, e2e, security, performance, and accessibility, automated and gated.
Phase 06Deployment
Blue-green or canary, observability live before launch, rollback rehearsed.
Phase 07Support
Managed services or hypercare hand-off. Defined SLOs, named on-call, monthly reviews.
Success stories
Programmes we have shipped
9 months
Banking
Core-banking platform build for a challenger bank
Ledger, accounts, and payment rails delivered to an FCA launch milestone in 9 months.
GoPostgreSQLKafkaKubernetesAWS
Country · UK
3x
Insurance
Claims platform rebuild for a general insurer
Replaced a 15-year-old claims system, tripling throughput per handler.
C#.NETAzureSQL ServerReact
Country · UK
40%
Pharma
Legacy modernisation for a pharma manufacturer
Strangled a validated legacy system into microservices, cutting change lead time 40% for a pharma manufacturer.
JavaSpringKafkaOpenShiftOracle
Country · CH
120+
Fintech
API and integration layer for a payments group
Unified 120+ partner integrations behind one governed API gateway.
TypeScriptNode.jsKongOpenAPIAWS
Country · DE
62%
Foodtech
Supplier portal for a foodtech marketplace
Self-service supplier portal lifted supplier adoption to 62% in one quarter for a foodtech marketplace.
Next.jsTypeScriptGraphQLPostgreSQL
Country · UK
78%
Banking
Onboarding web app for a digital bank
Straight-through KYC onboarding raised completion to 78%.
ReactTypeScriptNode.jsAWS
Country · UK
120ms
Logistics
Real-time operations dashboard for a logistics operator
Sub-120ms streaming operations dashboard across 40 control desks for a logistics operator.
ReactWebSocketsRustRedis
Country · UK
WCAG AA
Government & Public
Accessible public-services portal rebuild
Rebuilt a citizen portal to WCAG 2.2 AA, cleared external audit first pass.
Next.jsTypeScriptGOV.UK Design System
Country · UK
9 days
Construction
Editorial marketing site for a UK commercial flooring contractor
A 12-page static-exported brochure site with a PHP-based lead pipeline, shipped end to end in 9 days.
Next.jsTypeScriptTailwind CSSPHPMux
Country · UK
19 days
Professional Services
Advisory platform for a UK visa business-plan consultancy
A taxonomy-driven services-and-industries catalogue with a Sheets-backed lead pipeline, shipped in 19 days.
Next.jsTypeScriptTailwind CSSGoogle Sheets APINodemailer
Country · UK
225 files
Manufacturing
Global export platform rebuild for a bilateral trade and investment board
Re-themed and re-scoped an 80-route SaaS template into a 15-page global trade platform, with zero legacy brand colour left across 225 files.
Next.jsTypeScriptTailwind CSSFramer MotionD3.jsSplineGoogle Sheets API
Country · UK
4 membership tiers
Technology
Membership and governance platform for a UK-Pakistan bilateral tech forum
A membership and governance platform for a bilateral UK-Pakistan tech forum, complete with a downloadable governance-document library and a corridor market-intelligence dashboard.
Next.jsTypeScriptTailwind CSS
Country · UK
4.8★
Retail
Loyalty and shopping app for a retailer
Launched a retail loyalty app to a 4.8-star rating and 200k users in 90 days.
SwiftKotlinReact NativeAWS
Country · UK
54%
Telemedicine
Symptom-check and triage app for a telemedicine provider
Photo-and-symptom-first triage app cut consultation prep time 54% for a telemedicine provider.
React NativeTypeScriptAzure
Country · UK
31%
Manufacturing
Field-service app for a manufacturer's engineers
Offline-first engineer app cut job-completion admin 31% for a manufacturer's field team.
FlutterDartSQLiteGCP
Country · UK
2.1x
Wealth Management
Wealth app for a private bank
MiFID-compliant investing app doubled monthly active clients.
SwiftKotlinGraphQLAzure
Country · CH
Who we are
About usBritonOne Technology is a full-cycle engineering company that builds and operates production software for regulated estates. Since 2017, we have shipped programmes that clear audit on the first pass across banking, insurance, wealth, healthcare, and biotech. Our teams pair deep domain knowledge with disciplined engineering, treating compliance, security, and resilience as first-class deliverables. From architecture through to live operations, we stay accountable for the systems we build, measuring success by uptime, audit outcomes, and defensible business results.
60+Senior engineers across UK and EU
Why choose us
Engineer experience, average9+ yrs
Specialist replacement window48h
Code and IP ownership, day one100%
Surprise invoicesZero
Why teams choose BritonOne Technology
Four reasons enterprise buyers come back
We don't compete on lowest day-rate. We compete on shipped outcomes inside environments that have to clear audit.
Senior-only delivery
Every engineer on every engagement is at least senior, typically eight to fifteen years deep in their craft. No bench rotations, no junior pyramid hidden behind a glossy proposal, no bait-and-switch after contract signature. The architect who scoped your engagement is the same person committing code by week three.
Audit-ready by default
FCA, PRA, EBA, BaFin, FINMA, HIPAA, SOC 2 Type II: every framework we work under is treated as a design constraint from day one, not a final-stage gate. Evidence trails, model-risk packs, change-control artefacts, and pen-test reports ship alongside the code, ready for second-line review without a remediation sprint.
Anti-drift delivery discipline
Small pods of three to seven engineers, each with a named delivery lead who owns scope, schedule, and outcomes from kickoff to hand-off, never a faceless team you have to chase for an answer. Weekly demos run against the signed scope, frequent verification gates catch regressions early, and quarterly outcome reviews measure real progress against the original business case rather than a moving target. Together those rituals catch scope drift before it has any chance to compound, so programmes that should take six months don't quietly stretch into eighteen, budgets stay anchored to what was agreed, and every milestone ships with a written, testable definition of done that both sides sign off before we move on.
Long-tail support beyond hand-off
We don't disappear the moment the engagement closes. Managed services, hypercare windows, named on-call rotations, or quarterly health checks: pick the depth that matches your operational risk profile. About seventy percent of clients return for a second programme, usually because the team that shipped the first one is still on the other end of the page.
Client Satisfaction Reviews
Words from the teams we have shipped with.
Anonymous under MNDA. Each quote is from a senior buyer who owned the engagement end to end across the services catalogue.
One Team Replacing Two Vendors
“BritonOne Technology replaced two of our incumbent vendors with one team. Faster sprints, fewer status meetings, more code shipped per week.”
VP EngineeringTier-1 European retail bank
Common pre-engagement questions
Things buyers ask before picking the first service
