Institutional website and portal
Deliverables- Sitemap, zoning, wireframes, mockups
- Accessible integration, decoupled open-source CMS
- Content migration, redirects, SEO
- Editor training, transferable materials
Software engineering · Public sector
Accessible public services, designed by the people who build them
Websites, portals, business applications, mobile or desktop: rhanb designs, builds and maintains for public organisations, with a single point of contact and AI tooling under human review.
- RGAA 4.1 · AA
- Outcome commitment on the screens we deliver, accessibility statement at delivery
- CII no. 32369911
- Approved for the French Innovation Tax Credit, 2026-2030, DRIEETS Île-de-France
- Small team · 1 point of contact
- A human-sized team; the person who designs is the person who codes, from the first workshop to maintenance
- AI + human review
- Assisted production, reviewed and tested; the tooling gain is deducted from the days
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InterFast -
Notae AI -
Stuart -
Lido -
SLB -
Matooma
Six services, written like a price schedule
Each service lists its deliverables and the standards it applies. They are ordered alone or combined, at a fixed price or on call-off orders.
Business application
Deliverables- Web, mobile or desktop; scoping, data model, design document
- REST API, OpenAPI contract, integration with your information system
- Data migration from the existing system
- Acceptance test plan, functional then service acceptance
UX/UI design
Deliverables- User-journey workshops, information architecture
- Desktop, tablet and mobile mockups
- Interactive prototype
- UI kit and documented design system
RGAA accessibility
Deliverables- Accessible integration, fixes in the code
- Automated checks in continuous integration
- Manual protocol with screen readers
- Accessibility statement at delivery
Maintenance and support
Deliverables- Corrective, preventive, evolutive
- Level 2 and 3 helpdesk, response and recovery times
- Monitoring, backups, environments
- Reversibility, knowledge transfer
Artificial-intelligence features
Deliverables- Search and document generation inside your applications
- Agentic workflows with human control
- Evaluation and logging of responses
The standards, by name
We name the standard rather than the virtue. Each tile says how we apply it and what we do not claim.
- RGAA 4.1
- Accessibility: level AA on the screens we deliver, statement at delivery
- WCAG 2.1
- International reference for the criteria, for scopes outside RGAA
- RGESN
- Eco-design: functional sobriety, page weight, per-template measurement
- GDPR
- Fictitious data in development, named point of contact, minimisation
- OWASP
- Application security: encryption of sensitive data, OpenID Connect
- OpenAPI
- Versioned API contract, documentation generated from the contract
- NF525
- French tax compliance: full implementation in a SaaS ERP
- ISO 27001
- Information security: aligned practices, no certification claimed
Five milestones, the same on every engagement
Tracked and validated with you. Every technical topic goes through a design document before implementation.
| Milestone | Milestone | Deliverables | Validation |
|---|---|---|---|
| 01 | Scoping | Kick-off meeting, scoping and user-journey workshops, scoping note, schedule | Project committee |
| 02 | Design | Sitemap, zoning, wireframes, mockups, design system; one design document per topic | Each deliverable, in order; review by the associated designer |
| 03 | Build | Increments delivered to acceptance, code reviews, tests, accessibility checks in continuous integration | End-of-iteration demonstration |
| 04 | Acceptance | Acceptance test plan, test data sets, non-regression, load tests | Functional acceptance, then service acceptance |
| 05 | Go-live and maintenance | Documentation, training, transferable materials, reversibility plan, helpdesk | Operational readiness; follow-up committee |
Who does the work
-
Principal engineer
Single point of contact- Runs the workshops, designs the screens, writes the code, fixes non-conformities, staffs the maintenance desk
- Software engineer since 2017, French RNCP level 7 title
- Led an engineering team across 5 European markets and brought an ERP into NF525 compliance
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Associated UX/UI designer
Review and validation- Reviews and validates every graphic deliverable before it is shown to the client: journeys, wireframes, visual direction, mockups, components
- Brand and UX/UI designer, in practice since 2019
- Declared as a subcontractor from the tender onwards; rhanb remains the sole contractor
-
AI tooling
Assisted production- Produces code, tests, mockups and documentation under the engineer's control
- Decides nothing; receives no confidential client information
- Time saved on repetitive, verifiable work is deducted from the days invoiced
How we work with you
- One point of contact from the first workshop to maintenance; 0% staff turnover
- Remote meetings by default, on site for the key moments you choose
- rhanb's project tools, or yours if you prefer: settled at scoping
- We tender alone; the associated designer is declared as a subcontractor from the offer
- No confidential information sent to an AI tool; development on fictitious data
AI-native firm
A small firm, the output of a large one
rhanb has been organised around artificial-intelligence tooling from day one. Code, tests, mockups and documentation are produced with assistance, then read, tested and validated by an engineer before any delivery. That is what lets a small team hold the scope of a larger one, without its coordination costs.
Discuss your project →What it changes for you
- Time saved on repetitive, verifiable work is deducted from the days invoiced
- Shorter iterations on mockups and prototypes
- Documentation that is current at every delivery, produced with the code
What it does not change
- No confidential client information is sent to an AI tool: unpublished content, credentials, personal data, internal documents
- No external service has access to the repository; no automation holds a permanent token
- Nothing reaches production without human review, tests and a green pipeline
- Tools are declared under the contract when the specification requires it
What we have delivered since 2017
Engagements carried out by our principal engineer, before and since rhanb was founded in 2026. We only show what we can prove: a certificate, a product online, a repository.
| Period | Client · subject | Contribution | What we can prove |
|---|---|---|---|
| 2026 | InterFastSaaS ERP for construction · 8 months, 154.5 days | NF525 compliance of the invoicing module: cryptographic sealing, tamper-proof log, archiving; multi-method e-signature module; advanced-filtering tables and field-intervention tracking for technicians; mobile app; DDD refactoring into 60+ domain libraries. | Certificate of satisfactory completion from the CTO; 126 merged contributions, 162 code reviews, 5 RFCs |
| 2025 | Notae AILegalTech platform | Agentic workflows: meeting transcription, legal report generation, document search; hosting API for MCP servers; CI/CD, migration to a Bun monorepo; end-to-end features, interfaces included. | Second engineer on the team, reporting to the CTO; pipeline in production |
| 2020 – 2024 | StuartDelivery across 5 European markets | Architecture and co-leadership of the new public API (Node.js, TypeScript, Kubernetes); K6 performance test suite; OpenAPI specification for integrators; led a product team, then the French solutions team; onboarding and Shopify apps designed autonomously, without a designer. | Public API in production across 5 markets; four roles in four years, up to engineering lead |
| 2017 – 2020 | MatoomaCustomer web application | Complete redesign, from blank page to delivery: screen and journey design, architecture choices, front-end development. | Interfaces designed with no designer on the team |
| 2017 – 2020 | LidoVisual editing platform | POC then MVP of a drag-and-drop editor: dynamic DOM builder, GraphQL API, fullstack development. | MVP delivered |
| 2017 – 2020 | SLBEnterprise applications | Contributions to internal component libraries and new features for enterprise applications. | Component libraries delivered |
Also: web development teaching at WIS (2016-2018); NativeScript Developer Expert, open-source plugins published on npm (2018-2019); co-founder and technical lead of BeMooveed, a collaborative tourism platform incubated by Aler'Incub.
Contact
Send us your tender documents
We answer public tenders, in adapted and formal procedures alike, alone or with our associated UX/UI designer declared as a subcontractor. A need that has no specification yet is worth a conversation too.
contact@rhanb.com →What we read
- The tender rules, the specification, the price schedule
- The scope, the schedule and the award criteria
- What the existing website or application imposes
What we tell you
- Whether we answer, and with which team
- What is proven, what is declared, what is out of scope
- A price built per day, with its assumptions in writing