Freelancer profile translated to English.
Back to original languageAbout Daniel Jonatan
🚀 7 years of expertise to transform your ideas into scalable and robust products.
Expert in Node.js/TypeScript and React architectures, I support companies in creating SaaS platforms and migrating to AWS Cloud (Serverless).
Why choose me?
Advanced mastery of the AWS ecosystem (Lambda, EventBridge, SQS).
Use of AI tools to accelerate delivery without compromising quality.
Experience in international contexts and agile teams.
🎯 Available for your critical freelance missions (Remote or Paris)
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- Freelance.comDesign and Development EngineerMarch 2021 - Today (5 years and 5 months)Architecture Design:• ● Design and modeling of the application's software architecture.• ● Functional analysis and definition of the project's technical requirements.• ● Development of robust REST APIs in TypeScript using a Serverless architecture (Lambda, Cognito, S3).• ● Data flow modeling and security.Development & Migration:• ● Development of user interfaces (UI) with React (with a focus on improving ergonomics).• ● Leading the critical migration of the project from React 16 to React 19, ensuring compatibility and performance optimization.• ● Development and maintenance of internal private dependencies on npm.Quality & DevOps:• ● Automation of unit and integration tests (Jest, Cypress).• ● Execution of load tests with Gatling (Scala) to validate infrastructure scalability under high load.• ● Design and industrialization of CI/CD pipelines (Bitbucket Pipelines, Seed) for testing and deployment.
- Freelance.comFullstack Design and Development EngineerMarch 2021 - January 2026 (4 years and 10 months)Paris, FranceAnalysis & Architecture:• ● Functional and technical analysis of project requirements.• ● Design and modeling of software architecture to ensure performance and scalability.• ● Estimation and technical planning of tasks (Grooming, Planning Poker) in a Scrum environment.Fullstack Development (Laravel/React):• ● Design and development of a robust Backend with Laravel (REST API).• ● Development of modern and responsive Frontend components with React.js.• ● Technical integration of user interfaces (HTML5, modern CSS, Sass/Styled Components) with a focus on improving ergonomics (UI/UX).• ● Automation of Backend tasks through Python script development.Quality & DevOps:• ● Implementation of automated tests (unit and integration) with Jest and
- Freelance.comDesign and Development Engineer Design and Development EngineerMarch 2021 - March 2026 (5 years)Architecture & Design:• ● Functional and technical analysis of project requirements.• ● Design and modeling of software architecture to ensure performance and scalability.• ● Estimation and technical planning of tasks (Grooming) in a Scrum environment.Backend & Frontend Development:• ● Development of a robust Backend with Django Rest Framework (REST API).• ● Frontend development and optimization (HTML5, modern CSS, UI integration).• ● Ergonomics (UI/UX) improvement and corrective maintenance of interfaces.Quality & DevOps:• ● Implementation of unit and integration tests in Python.• ● Containerization of development and production environments with Docker and Docker-compose.• ● Industrialization of deployment (CI/CD) by writing Bash scripts and
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Education
- "JavaScript Problem Solving"Coding Game.2023"JavaScript Problem Solving"
- DevOps AWS, Angular, React TrainingAJC Formation.2020Formation DevOps AWS, Angular, React