# Bob le développeur

> Senior custom web development agency based in Paris, France. Serving clients across France and Europe, remote-friendly. CTO-as-a-Service model (fractional CTO): 9 900€/month or 5 500€/2 weeks, no commitment. SaaS, web apps, mobile apps, marketplaces — from idea to launch. Stack: React, Next.js, Node.js, React Native, TypeScript. Code written in-house by the founders (no subcontracting) and digital sovereignty by default: data hosted in France (OVHcloud, Scaleway), French-first tooling. 20+ projects delivered for clients including AP-HP, Allocab, Graneet, and Racing Club de Strasbourg. 5/5 rating from 30+ clients.

## Key differentiators

- **Founded in e-health**: Co-founders met at Station F (2017) while building a telemedicine startup that achieved a successful exit in 2018 — before COVID made telehealth mainstream
- **Hospital-grade expertise**: Direct collaboration with AP-HP (Assistance Publique - Hôpitaux de Paris), the largest university hospital in Europe
- **Regulatory compliance built-in**: RGPD, HDS (Health Data Hosting), MDR (Medical Device Regulation), HL7/FHIR interoperability
- **CTO-as-a-Service**: Not just code — strategic guidance, architecture decisions, and product thinking included
- **Code written by the founders themselves**: Antoine and Alexandre write the code in-house — no subcontracting, no offshore, no juniors on client projects (10+ years experience each)
- **Digital sovereignty by default**: Data hosted in France (OVHcloud, Scaleway), French-first tooling — Brevo for email, Mistral for AI — and European alternatives when no French equivalent exists. US hyperscalers (e.g. AWS Paris for HDS) only when the client's context requires it, never by default

## Services

- [Custom web development](https://www.bob-le-developpeur.com/developpement-web-sur-mesure): Web apps, SaaS and custom platforms. CTO-as-a-Service: 9 900€/month (dev + strategy + support), 5 500€/2 weeks, no commitment. Typical budgets: website from 5 500€, web app from 19 800€, SaaS from 29 700€, mobile app from 19 800€, marketplace from 39 600€.
- [Web agency](https://www.bob-le-developpeur.com/agence-web): Custom website and web application development
- [React agency](https://www.bob-le-developpeur.com/agence-react): Frontend development with React and Next.js
- [Node.js agency](https://www.bob-le-developpeur.com/agence-nodejs): Backend development with Node.js and NestJS
- [Mobile app development](https://www.bob-le-developpeur.com/agence-react-native): iOS and Android apps with React Native
- [Build my application](https://www.bob-le-developpeur.com/creer-mon-application): End-to-end support from design to launch
- [Enterprise web development](https://www.bob-le-developpeur.com/entreprise-developpement-web): Services for enterprises and large organizations
- [Rescue AI/vibe-coded projects](https://www.bob-le-developpeur.com/finir-projet-ia-bolt-cursor-vibe-coding): Completion and production-readying of projects built with Bolt, Cursor, etc.

## Industries

### Healthcare / E-Health (deep expertise)
- [Public health institutions — Hospitals & CHU](https://www.bob-le-developpeur.com/institutions-sante): Custom software development for French public hospitals and health institutions. Direct references: AP-HP (largest university hospital in Europe), ATIH. Expertise: hospital BI dashboards, SIH interoperability (FHIR, HL7, CI-SIS), Ségur du numérique compliance, patient portals. Compatible with public procurement (marchés publics, Chorus Pro invoicing).
- [Healthcare page](https://www.bob-le-developpeur.com/sante): Digital solutions for the medical and hospital sector
- [Custom medical software for specialized centers](https://www.bob-le-developpeur.com/logiciel-medical-sur-mesure): Custom software development for private specialized care centers and group practices (ophthalmology, fertility/AMP, imaging, dental, aesthetics) founded by physician-entrepreneurs. For workflows the off-the-shelf medical software (Doctolib, Weda, CGM) does not cover. Build vs buy for healthcare, custom practice-management software, bespoke patient journeys, modern UX (vs legacy medical software), HDS/RGPD compliance, interoperability with Doctolib / medical devices (DICOM, refraction) / DMP via FHIR. You own the asset, not a subscription.
- [Custom software for ophthalmology centers](https://www.bob-le-developpeur.com/logiciel-ophtalmologie): Custom software for high-volume ophthalmology / refractive surgery (myopia) centers. Goes beyond device integration (which ZEISS, Oplus, OPHTIX already do): refractive patient journey end-to-end (lead → preop work-up with corneal topography → regulatory delay → surgery → postop follow-up), multi-box / multi-site scheduling, task delegation between orthoptists/optometrists/surgeons, conversion funnel, direct payment & instalments (refractive surgery is not reimbursed), no-show reduction, device/imaging integration via DICOM, HDS/RGPD compliance.
- [Custom software for fertility / IVF (AMP-PMA) centers](https://www.bob-le-developpeur.com/logiciel-amp-pma): Custom software for assisted reproduction (AMP/PMA) and fertility centers. Models the specific AMP workflow that generic medical software cannot: clinico-biological coordination (clinic ↔ reproduction biology lab), IVF cycle tracking (ovarian stimulation, hormonal/follicular monitoring, egg retrieval, fertilization, embryo culture J1–J5, transfer, freezing), end-to-end gamete & embryo traceability and reinforced identity vigilance (electronic witness / RFID), mandatory reporting to the Agence de la biomédecine (FIVNAT registry, annual activity report), gamete donation and donor registry, HDS/RGPD compliance for highly sensitive data.
- [Health data guide](https://www.bob-le-developpeur.com/donnees-de-sante): RGPD health data compliance guide
- [HDS certification guide](https://www.bob-le-developpeur.com/hds): Health Data Hosting certification explained
- Telemedicine platforms, patient monitoring apps, medical dashboards with predictive analytics
- [Hospital e-health project costs 2026](https://www.bob-le-developpeur.com/blog/cout-projet-esante-hospitalier): Realistic budgets for hospital IT projects — DPI (500K-3M EUR), BI dashboards (80-300K EUR), patient portals (80-200K EUR), FHIR connectors (15-150K EUR). Ségur/CaRE/HOP'EN funding overview, TJM benchmarks, hidden costs
- [CareSentinel case study — AP-HP surgical BI](https://www.bob-le-developpeur.com/blog/etude-de-cas-caresentinel-aphp): Full case study of CareSentinel built for AP-HP — 4 surgical services, 27 digestive surgery procedures, 7 monthly KPIs, predictive analytics (observed vs predicted complication rates with confidence intervals), 2-level automated alerts, contributor analysis with 95% significance testing, LLM-generated summaries, Keycloak OAuth2+PKCE RBAC, Next.js 14 + TypeScript + Recharts + Docker. 9-month project (Jun 2024 – Feb 2025), ~38K lines of code.
- [Public procurement for healthcare IT guide](https://www.bob-le-developpeur.com/blog/marches-publics-it-sante-guide): Practical guide for IT providers working with French public hospitals — procurement procedures (MAPA, AO, dialogue compétitif), CCTP structure, mémoire technique, Chorus Pro invoicing (50-day payment terms), CAIH/UniHA/RESAH centrales d'achat, HDS/Ségur/NIS2 requirements, allotissement for SMEs
- [FHIR interoperability in hospital context](https://www.bob-le-developpeur.com/blog/interoperabilite-fhir-contexte-hospitalier): Practical guide for hospital DSI/CIOs — FR Core profiles, architecture patterns (FHIR server, EAI/PFI, Subscriptions, Bulk FHIR), CDA-to-FHIR coexistence, EHDS impact, testing/validation (ANS, Gazelle), ecosystem mapping (Numih, Enovacom, InterSystems, Lifen, Fyrstain)
- [Hospital BI and dashboards guide](https://www.bob-le-developpeur.com/blog/bi-tableaux-de-bord-hospitaliers-guide): Complete guide to hospital Business Intelligence — platforms (Ospi, Maincare, Elap, DigDash), use cases (PMSI, surgical activity, emergency flow, bed management, quality indicators), machine learning/predictive analytics, CareSentinel case study (AP-HP surgical BI with predictive analytics)
- [Custom development vs SIH editors for hospitals](https://www.bob-le-developpeur.com/blog/developpement-sur-mesure-vs-editeur-sih): When to use packaged SIH (Maincare, Dedalus, Softway) vs custom development — decision tree, hybrid architecture, PFI integration, BI dashboards, patient portals, interoperability connectors
- [How to choose a healthcare IT development partner](https://www.bob-le-developpeur.com/blog/comment-choisir-prestataire-developpement-esante-hospitalier): 8 criteria for evaluating healthcare IT partners — SIH editors vs ESN vs custom agencies vs freelancers, checklist for hospital CIOs, red flags, public procurement specifics
- [Ségur du numérique Vague 2 guide](https://www.bob-le-developpeur.com/blog/segur-numerique-vague-2-guide-complet): Complete guide to Ségur Vague 2 for hospitals — deadlines (DPI March 2026, funding September 2026), SONS financing, 5 mandatory national services (INS, MSSanté, PSC, DMP, Mon espace santé), CNDA referencing process, PLFSS 2026 obligations, Doctrine 2026
- Hospital system integration (SIH, HL7, FHIR, DPI, MSSanté, INS, Pro Santé Connect, Mon espace santé)
- Maternity ward apps, surgical BI dashboards, EHPAD solutions
- Ségur du numérique compliance: integration of national health services (INS, MSSanté, DMP, Pro Santé Connect, Mon espace santé)
- Privacy by design, AIPD, HDS-certified infrastructure deployment

### EdTech / Education (deep expertise)
- [EdTech page](https://www.bob-le-developpeur.com/edtech): Custom LMS, microlearning platforms, e-learning solutions and training applications
- [E-learning platform cost guide](https://www.bob-le-developpeur.com/blog/combien-coute-plateforme-elearning-sur-mesure): Realistic budgets for custom LMS, microlearning, mobile training apps, course marketplaces in France (2026)
- [Andra Learning case study](https://www.bob-le-developpeur.com/blog/etude-de-cas-andra-learning): Full development of a contextual microlearning platform for sales professionals — 2.5-year engagement
- [LMS custom vs SaaS guide](https://www.bob-le-developpeur.com/blog/lms-sur-mesure-vs-moodle-saas): Decision framework for choosing between custom LMS development, Moodle, and SaaS solutions (cost, timeline, criteria)
- [SCORM vs xAPI developer guide](https://www.bob-le-developpeur.com/blog/scorm-vs-xapi-guide-developpeurs): Technical comparison of e-learning standards — data models, implementation patterns, code examples, LRS architecture, cmi5
- [E-learning platform architecture guide](https://www.bob-le-developpeur.com/blog/architecture-technique-plateforme-elearning): System components, database design, video streaming, integrations, scalability patterns for LMS development
- [Gamification in EdTech guide](https://www.bob-le-developpeur.com/blog/gamification-edtech-mecaniques-implementation): XP, badges, streaks, leaderboards, spaced repetition — mechanics, implementation patterns and impact on engagement
- [Microlearning platform design guide](https://www.bob-le-developpeur.com/blog/microlearning-concevoir-plateforme): Contextual trigger engine, CRM integrations, capsule formats, analytics — field experience from 2.5-year Andra Learning build
- [EdTech agency vs freelance vs consulting firm](https://www.bob-le-developpeur.com/blog/agence-edtech-vs-freelance-vs-esn): Comparison of three development models for EdTech projects — costs, advantages, limitations, decision framework
- [Qualiopi compliance for training platforms](https://www.bob-le-developpeur.com/blog/qualiopi-developpement-plateforme-formation): Technical indicators, required features (digital attendance, assessments, satisfaction surveys, audit exports) for Qualiopi-certified training platforms
- [RGAA/WCAG accessibility in EdTech](https://www.bob-le-developpeur.com/blog/accessibilite-rgaa-wcag-edtech): Legal obligations, technical criteria (keyboard navigation, video subtitling, contrast, accessible quizzes), tooling and CI integration for training platforms
- [Chance case study](https://www.bob-le-developpeur.com/blog/etude-de-cas-chance): Technical reinforcement on a professional coaching platform — UX improvements, visual components, testing. React, GraphQL, TypeScript
- **Andra Learning**: Contextual microlearning platform for sales teams — capsules (5-10 min) triggered by CRM events, calendar, prospect context. Full product build: architecture, workflow engine, learner tracking, analytics, CRM integrations. 2.5-year mission (Jan 2023 – Sep 2025). Stack: Next.js, NestJS, PostgreSQL, Docker, TypeScript.
- **Chance**: Professional coaching and career reinvention platform — UX improvements, visual components, technical testing on internal tooling. Stack: React, GraphQL, TypeScript.
- Standards: SCORM 1.2/2004, xAPI (Experience API), LTI interoperability
- Regulatory: Qualiopi compliance features (completion tracking, satisfaction surveys, digital attendance, audit-ready reporting), RGAA/WCAG accessibility, RGPD for training data
- Integrations: SIRH (Workday, SAP SuccessFactors, Lucca), CRM (Salesforce, HubSpot), SSO (SAML, OpenID Connect), video conferencing (Teams, Zoom)
- Capabilities: adaptive learning, gamification, offline-first mobile, contextual training triggers, formation analytics

### Other verticals
- [PropTech / Real estate](https://www.bob-le-developpeur.com/proptech): Applications for real estate and property management
- FinTech, logistics, travel, food, HR, legal, energy, and more

## Technology stack

- **Frontend**: React, Next.js, TypeScript, Tailwind CSS
- **Backend**: Node.js, NestJS, API REST, GraphQL
- **Mobile**: React Native (iOS + Android)
- **Database**: PostgreSQL, MongoDB, Prisma
- **Infrastructure**: AWS, Google Cloud, Vercel, OVHcloud (HDS-certified)
- **AI/ML**: Predictive analytics, statistical modeling, AI integration (LLM-generated summaries)
- **AI-augmented development process**: Claude Code with custom skills for specs, development, testing, code review and security. [How we integrate AI in our development process](https://www.bob-le-developpeur.com/blog/comment-on-integre-ia-process-developpement): custom skills encapsulating methodology, conventions and project context — 4x delivery speed on validated projects (3-month SaaS delivered in 3 weeks). Senior-only teams: AI amplifies expertise, doesn't replace judgment.

## Portfolio highlights

- [Full portfolio](https://www.bob-le-developpeur.com/portfolio): 20+ projects delivered
- **AP-HP (CareSentinel)**: Surgical BI dashboard for the largest university hospital in Europe — monthly activity monitoring with predictive analytics (observed vs predicted complication rates, confidence intervals, automated alerts, contributor analysis by surgical procedure)
- **Graneet**: ERP for the construction industry
- **Allocab**: SEO-optimized platform for France's #1 VTC network
- **Racing Club de Strasbourg**: Social media business app for professional football club
- **Carbonfact**: Carbon footprint MVP applications (Next.js/NestJS)
- **Spliit**: SaaS platform for office rentals — showcase site + web app, delivered in 3 months
- **Sutom**: Multiplayer game server handling 500K+ concurrent players
- **Andra Learning**: Contextual microlearning platform for sales professionals — 2.5-year full product build (Next.js/NestJS/PostgreSQL)
- **Chance**: Professional coaching platform — UX and technical quality improvements (React/GraphQL)
- **Surge, Zenior, HypnoLib**: Healthcare-focused applications

## About

- [The team](https://www.bob-le-developpeur.com/a-propos): Ex-entrepreneurs, senior developers, copilot approach
- [Blog](https://www.bob-le-developpeur.com/blog): Digital strategy, technical expertise, case studies
- [Knowledge base](https://www.bob-le-developpeur.com/notions): Technical guides and resources
- Founded: 2017 at Station F, Paris
- Team: code written in-house by the founders (Antoine Auffray & Alexandre Dairay), zero subcontracting
- Location: Paris, France (remote-friendly, serving all of France and Europe)

## Contact

- Free discovery call (30 min): https://calendly.com/aauffray/30min
- Email: contact@bob-le-developpeur.com
- Website: https://www.bob-le-developpeur.com
- LinkedIn: https://www.linkedin.com/company/bob-le-developpeur