Freelancer profile translated to English.

Description

With several years of experience on large-scale projects (particularly in telecommunications), I have designed and evolved critical business applications (SPAs) with significant challenges in web performance, scalability, and maintainability.

I assist teams with:

• modern frontend development (Vue.js, React, TypeScript, Vite, JavaScript ES6+)

• structuring robust front-end architectures

• API integration (REST / GraphQL)

• performance optimization and code quality (clean code, best practices)

• state management (Vuex, Pinia)

Frontend Architecture Lab — Personal project for researching and comparing modern frontend architectures around a collection management and exchange application:

Comparative implementation of identical features in Vue 3, React, and Qwik to study:

- rendering models

- reactive systems

- hydration vs. resumability

- runtime performance

- JavaScript loading strategies

- Docker environment setup and GitLab CI/CD pipeline

- and frontend modular organization. React & TypeScript

Autonomous and product-oriented, I act as a senior frontend developer / lead frontend to deliver concrete and performant solutions.

Available for high-value-added frontend missions.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Serbian
Native or bilingual

Workplace preferences

Can work on-site

Paris (up to 50km)

Projet personnel
Frontend Architecture Lab
April 2026 - Today (2 months)
Paris, France
Personal project for researching and comparing modern frontend architectures around a collection management and exchange application:

Comparative implementation of identical features in Vue 3, React, and Qwik to study:
- rendering models
- reactive systems
- hydration vs. resumability
- runtime performance
- JavaScript loading strategies
- Docker environment setup and GitLab CI/CD pipeline
- and frontend modular organization. React & TypeScript
React.js React Hooks Qwik Vue3 Ajax
Docaposte
Senior Front-End Developer
TELECOMMUNICATIONS
October 2018 - February 2026 (7 years and 4 months)
Paris, France
Context:
Development of a SIM card fleet management portal for a major telecom operator (several thousand users), with strong performance, scalability, and reliability requirements.

Achievements:
• Complete refactoring of a legacy application (jQuery) to a modern SPA in Vue.js
• Design of a modular frontend architecture (routing, business components, API services)
• Setup and structuring of global state management (Vuex)
• Centralization and optimization of API calls (GraphQL & REST)
• Development and maintenance of over 800 business UI components
• Frontend performance optimization:
• improved loading (code splitting, lazy loading via Vite)
• reduced API calls and better data management
• implementation of server-side pagination
• optimization of Vue components (computed, lifecycle, state)
• improved interface fluidity and perceived loading time
• optimization of dashboards and data visualizations (Highcharts)
• Setup of development environments (Docker) and CI/CD integration (GitLab)
• Role of technical frontend referent:
• developer support
• dissemination of best practices
• participation in architectural decisions
• Setup and integration of authentication via Keycloak (SSO, PKCE):
• management of the authentication cycle (login, callback, refresh token)
• securing API calls with automatic token injection
• management of token refresh and user sessions
• integration with the global store for role and permission management

Stack:
Vue.js, Vuex, TypeScript, Vite, GraphQL, REST, Docker, GitLab CI/CD, Jest, Cypress
Vue.js API GraphQL Keycloak Web Performance Optimization Typescript
Intitek
Front-End Developer
PRESS AND MEDIA
January 2017 - January 2018 (1 year)
Context:
Development of video solutions for media platforms.

Achievements:
- Development and integration of video players (Video.js) in a high-volume media context

- Implementation of advertising monetization (pre-roll / mid-roll) through dynamic script integration (Smart AdServer, Brightcove) in Twig templates

- Management of ad/video content synchronization, including handling unstable third-party API behaviors (adStart / adEnd event desynchronization, playback blocking)

- Analysis and debugging of player events (instrumentation via logs) to identify playback inconsistencies
- Implementation of fallback mechanisms based on player state to secure video content resumption in case of event failure
Implementation of advanced UX behaviors:
automatic player pause when the user leaves the tab (visibilitychange)
conditional pause/resume based on player visibility in the viewport (user scroll)
Code optimization (maintainability, reusability) in JavaScript and PHP
Participation in the modernization of the group's editorial CMS by introducing modern frontend technologies (React, Node.js, Webpack) for content creation and publication interfaces
Setup and maintenance of continuous integration tasks (Grunt)

Stack:
JavaScript, VideoJS, React, Node.js, Webpack, Docker
React