Freelancer profile translated to English.
Back to original languageAbout Alban
Node.js Backend Developer | NestJS | TypeScript - 5 years of experience
Some measured results at Airweb (last 3 years):
-Production APIsused bySNCF**, **TBM Bordeaux**, and **Instant System
-< 20msaverage response time
-500+ concurrent requestshandled at peak
-1M+ requestsprocessed (multi-layer architecture)
-99%+ availabilityin production
What I deliver to you:
✅Documented backendand automatically tested
✅Scalable architecture(microservices or monolith)
✅Secure backend(auth, validation, integrations)
✅Maintainable codewithTDDand automated tests
Technical Stack:
-Backend**: Node.js | **NestJS|TypeScript
- **DBs**: PostgreSQL | MySQL | MongoDB | Redis
- **API**: REST | WebSockets
From startups to large corporations, I transform your needs into **robust backends**.
In addition to my professional experience, I have also worked on twoSaaS with Typescript**: **Screenio(in production) andVoxPost(in development).
Screeniooffers dynamic display, meaning you can manage the content of all your store's screens precisely from a responsive web platform.
VoxPostoffers the creation of LinkedIn posts by voice using artificial intelligence.
If you are looking for abackend web developercapable of designing and maintaining your backend in **NestJS**, I suggest we discuss it during a short video call.
I usually respond within the hour.
French
Native or bilingual
English
Native or bilingual
German
Fluent
Can work on-site
Paris (up to 50km), Lyon (up to 50km), Marseille (up to 50km), Nantes (up to 50km), Strasbourg (up to 50km)
Experience
- KickTheMapBack-end Web Developer | NestJS | TypescriptCIVIL ENGINEERINGJuly 2025 - Today (11 months)Strasbourg, France→ Mission Objective:Develop and evolve the 3D management and visualization web platform (surveyor business), ensuring performance and scalability.→ Achievements:
- Design and optimization of the backend withNestJSandTypescriptto improve the platform's **performance, stability, and maintainability**.
- Advanced integration of 3D models (point clouds, surfaces, volumes) with afluid user experienceand adapted business features (technical codes, Enedis Recostar mode).
- Implementation of administration and user management tools enabling **time savings, better data visibility, and increased productivity**.
→ Technical Stack:NestJS, Typescript, Javascript, REST API, MySQL, WebGL - AirwebBack-end Web Developer | NestJS | TypescriptTRANSPORTATIONAugust 2022 - June 2025 (2 years and 10 months)Paris, France→ Mission Objective:Design and optimize dematerialized ticketing features for an API used by major mobility players (SNCF Connect, TBM, Instant System).→ Achievements:
- Development of robust algorithms (offline validation, ticket transfer, QR code generation) improving the reliability and performance of mobility solutions.
- Design and optimization of APIs inTypescriptand **NestJS**, ensuring smooth integration with strategic partners and better perceived quality.
- Implementation of non-regression tests and custom export scripts, reducing errors, saving time, and improving team productivity.
→ Technical Stack:Typescript, Javascript, NestJS, Node.js, REST API, Postman, Gitflow - Wild Code SchoolBack-end Web Developer | Typescript | ExpressJSEDUCATION AND E-LEARNINGNovember 2021 - June 2022 (8 months)Paris, France→ Mission Objective:Train SNCF employees retraining in front-end and back-end web development to ensure their success in obtaining their diploma.→ Achievements:
- Teaching the fundamentals of HTML, CSS, JavaScript / TypeScript to accelerate skill development and strengthen the autonomy of future back-end web developers.
- Practical application on React.js, Redux, Node.js, and Express.js with a focus on APIs and good TypeScript/JavaScript practices to optimize code performance and quality.
- Complementary workshops on Angular and Java, with integration of collaborative tools, to maximize the employability and versatility of the trained profiles.
→ Technical Stack:HTML, CSS, JavaScript, TypeScript, React.js, Redux, Node.js, Express.js, Angular, Java, Git, API, AdonisJS
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Education
- Software Engineering EngineerENSIIE / IIE2020Socle Commun solide composé de : -> Programmation impérative / orientée objet / fonctionnelle (C, C++, Java, OCaml, HTML/CSS, JavaScript) -> Découverte de Linux avec les principales commandes à connaître, l'initiation au scripting pour l'automatisation de tâches, la programmation système, etc. -> Cours sur les bases de données (dispensés en PostgreSQL) -> Cours réseaux avec le modèle OSI, la création de réseaux et de sous-réseaux, le fonctionnement du TCP / UDP, etc. Des cours de spécialités composés de : -> Assembleur et création d'un compilateur -> Création d'un Middleware -> Cryptographie -> Conception et Modélisation d'un projet informatique -> Gestion d'un projet avec les pratiques agile (SCRUM)
- Master in Computer SciencePassau Universität2020À Passau, j'ai eu des cours sur les sujets suivants : -> Sécurité Cloud (Attaque Flush&Reload, recherche scientifique, Utilisation de Volatility) -> Cryptographie théorique (cours orienté mathématique, avec démonstration des théorèmes fondamentaux utiles à la cryptographie) -> Sécurité orientée hardware (notion d'aléatoire, attaque covert-channel, fonctionnement bas niveau du CPU, etc.) -> Projet en groupe sur la création d'une attaque par covert-channel sur appareil mobile grâce à la création d'un transmetteur et d'un récepteur sur Android Studio (projet en JAVA) permettant de stresser le CPU de différentes manières suivant le message à transmettre