Freelancer profile translated to English.
Back to original languageAbout Johan
E-health Expert & Freelance CTO
I design and develop critical digital solutions for healthcare, **SaaS, and e-commerce**, combining innovation, **scalability, and robustness**. With over 6 years of experience, I have supported startups and large companies in creating web applications and SaaS platforms, managed local and international teams, and delivered projects with significant national impact.
Among my achievements:
- Development and supervision of microservices and REST APIs for critical and real-time flows (pharmacies, mutual insurance, mobility).
- Management of over 300 customized e-commerce sites and national directory management for pharmacy groups.
- Design of multi-source connectors and integrations (webservice, webhook, FTP, email...) for heterogeneous systems.
- Technical leadership: team management, definition of scalable architectures, strategic decisions, direct interface with business needs.
- Advanced Front-End Development (Vue.js, React.js, Angular) and responsive/mobile-first integration.
- CMS Expertise: WordPress & Prestashop, custom theme and plugin creation, integration of external tools (newsletter, analytics).
I combinetechnical rigor, product sense, and strategic vision**, with a passion for high-value-added projects, particularly in the digitalization and **optimization of health services**. My goal: to transform complex ideas into **reliablesolutions that are performant, scalable, and ready for national rollout.
French
Native or bilingual
English
Conversational
Can work on-site
Nice (up to 15km)
Experience
- PHARMANITYCTOHEALTH AND WELLNESSDecember 2024 - Today (1 year and 6 months)Nice, FranceE-commerce platform & pharmaceutical interconnection – FranceMissions & achievements:
- Led the technical vision and roadmap for the Pharmanity platform.
- Designed and improved the LGO connector: real-time, reliable stock retrieval via 12 connection types (webservice, webhook, email, FTP...).
- Supervised +300 customized e-commerce sites for pharmacists and the national pharmacy directory.
- Managed deals and deployed technical solutions for national pharmacy groups, translating business needs into robust and scalable architectures.
- Defined robust, performant, and maintainable SaaS and microservices architectures for large-scale deployment.
- Technical lead and strategic decision-making: platform security, performance, and stability.
- Coordinated development teams to ensure reliability and scalability.
Key Skills:SaaS architecture, microservices, Node.js, PHP, Mysql/Postgresql, real-time flows, multi-site e-commerce, technical leadership, large account integration, national scalability. - Livmed'sEngineering Manager / CTOHEALTH AND WELLNESSAugust 2024 - Today (1 year and 10 months)Nice, FranceAt the peak of Livmed’s growth, I held a transverse role as Engineering Manager / Technical Lead, close to an operational CTO, with strong human, technical, and business responsibilities.I led development teams, defined technical directions, and presented strategic technological topics to management and national partners.Team Management & Organization
- Direct management of an on-site development team of 7 developers (France).
- Leadership of a distributed international development team of 10 developers (Vietnam).
- Implementation of team rituals: progress tracking, prioritization, inter-team coordination, skill development.
Strategic Role & Technical Leadership- Technical reference and decision-maker, akin to a CTO, on all tech-related matters.
- Facilitated and led business meetings with a strong technical component (management, partners, institutional clients).
- Translated business needs into clear and realistic technical roadmaps.
- Arbitrated technological choices (architecture, stack, product priorities).
Architecture & Scalability- Designed and validated robust and scalable architectures capable of supporting national deployments and high volumes.
- Led strategic technical developments for national mutual insurance companies (integrations, secure flows, regulatory constraints).
- Anticipated performance, security, and maintainability challenges.
Structuring Projects & National Impact- Co-designed and managed a public-facing project enabling the localization and availability of medication in France, with critical reliability, accessibility, and adoption stakes.
- Coordinated product, technical, and partner teams to deliver a solution usable nationwide.
- End-to-end project monitoring: ideation, scoping, execution, deployment, and evolution.
- Livmed'sFull-Stack DeveloperHEALTH AND WELLNESSAugust 2022 - August 2024 (2 years)Nice, FranceAt Livmed’s, a French e-health startup, I participated in the development of a comprehensive digital platform (web, mobile, and back-end) aimed at digitizing local pharmacies and ensuring patient access to care for those unable to travel.Livmed’s solutions combine web and mobile applications, business APIs, and a logistics platform, enabling pharmacists to offer secure medication ordering and delivery within a regulated framework with high reliability stakes.Full-Stack Development (Front & Back)
- Developed and evolved Front-End features in React.js and Angular, with a focus on UX, performance, and stability.
- Actively participated in the Node.js / Express Back-End within a microservices architecture.
- Integrated and consumed REST APIs, managed inter-service communication, and handled business flows.
Billing Microservice (from A to Z)- Designed, developed, and fully deployed a billing microservice, from functional analysis to deployment.
- Modeled the database (MongoDB / Prisma).
- Implemented business rules (billing, states, calculations, security).
- Exposed secure REST APIs for consumption by other platform services.
- Conducted testing, performance optimization, and ongoing maintenance.
Maintenance, Quality & Continuous Improvement- Maintained and optimized existing features on production products.
- Contributed to the overall stability, security, and performance of the systems.
- Participated in the continuous improvement of development processes (code quality, organization, best practices).
- Worked in an agile environment, in close collaboration with technical and product teams.
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Education
- DUT InformatiqueIUT de Nice2016DUT Informatique à Nice
- Licence 3 Information CommunicationUniversité Côte d'Azur2020Cette licence offre un cursus généraliste et ouvert sur les savoirs et savoir faire liés aux Sciences de l’Information et de la Communication, en soutenant une dynamique professionnalisante par des spécialités de parcours appliqués en dernière année. Dans le champ interdisciplinaire de l’information communication, les étudiants sont initiés au processus de production des connaissances, aux principaux enjeux de la recherche et des méthodes scientifiques de ce champ, à la mobilisation de différents outils, techniques, pratiques, au repérage des différents acteurs et phénomènes communicationnels, afin de développer un esprit critique et acquérir le raisonnement adapté à leur discipline.