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Hi, I'm Hassan Afjnik, a Senior Fullstack Developer based in Asnières-sur-Seine. I have 7 years of experience working across the entire web application lifecycle—from design through deployment. I thrive in modern JavaScript/TypeScript environments and focus on building reliable, maintainable, and secure solutions with an emphasis on code quality and development best practices.…

Hassan Afjnik

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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Hi, I'm Hassan Afjnik, a Senior Fullstack Developer based in Asnières-sur-Seine. I have 7 years of experience working across the entire web application lifecycle—from design through deployment. I thrive in modern JavaScript/TypeScript environments and focus on building reliable, maintainable, and secure solutions with an emphasis on code quality and development best practices.…

Available to hire

Hi, I’m Hassan Afjnik, a Senior Fullstack Developer based in Asnières-sur-Seine. I have 7 years of experience working across the entire web application lifecycle—from design through deployment.

I thrive in modern JavaScript/TypeScript environments and focus on building reliable, maintainable, and secure solutions with an emphasis on code quality and development best practices.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Work Experience

Senior Fullstack JavaScript Developer at MyScienceWork

January 1, 2021 - Present

Designed and developed a modular backend architecture in Node.js. Designed, developed, and maintained RESTful APIs. Implemented Single Sign-On (SSO) and Role-Based Access Control (RBAC). Migrated backend from FlowJS to TypeScript. Integrated data via third-party APIs. Implemented continuous integration and continuous deployment (CI/CD) pipelines across multiple environments using GitLab CI. Used Elasticsearch for high-performance search capabilities. Developed dynamic export features (CSV, PDF, Excel).

Fullstack JavaScript Developer at Group INTM

January 1, 2018 - January 1, 2019

Project for AP-HP – Patient management application. Migrated a Java application to Node.js. Developed secure RESTful APIs. Set up a profile-based rights management system. Implemented secure storage for medical documents via AWS S3. Implemented automated workflows.

Fullstack Java J2EE Developer at Group INTM

January 1, 2018 - January 1, 2018

Maintained and upgraded a training tracking application. Implemented backend business rules. Created tracking dashboards and generated reports.