Senior Web Developer - PHP/React - ASAP Start - Freelance / CDI

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  2. Symfony
  • Company Alter Solutions
  • Employment Full-time
  • Location 🇧🇪 Belgium
  • Submitted Posted 1 day ago - Updated 7 hours ago

Job Description

To support the ongoing optimization of a web-based operational platform, we are looking for a Front-End Web Expert. The ideal candidate will bring deep expertise in improving code quality, enhancing front-end performance, and introducing modern development practices – particularly in real-time systems (e.g., Mercure), REST API architecture, and automated testing frameworks.

  • Mentor and support a team of web developers

  • Optimize front-end (React/TypeScript) and back-end (PHP/Symfony/API Platform) performance

  • Improve resource efficiency (memory, CPU usage, initial load times)

  • Define and implement front-end coding standards (naming conventions, error handling, etc.)

  • Refactor and modernize the React/TypeScript codebase according to best practices

  • Gradually replace legacy code (e.g., Bootstrap, outdated JavaScript, older React versions)

  • Establish a structured, scalable front-end development framework (conventions, modular organization, quality benchmarks)

  • Strengthen API structure and security using API Platform

  • Provide ad-hoc technical leadership (code reviews, testing practices)

  • Stay up to date with front-end technologies and continuously propose improvements

Qualifications

TECH STACK

  • Back-end: PHP 8+, Symfony 6 (LTS), API Platform, Mercure, MariaDB, Istio, ELK, Azure, Node.js

  • Front-end: TypeScript, React (with MUI)

  • Queueing: RabbitMQ

  • Testing: Playwright (E2E), PHPUnit, JEST

  • Databases: MariaDB

  • Caching: Redis

  • CI/CD: Azure DevOps, Docker, Git, Kubernetes

  • Monitoring: APM (Kibana), Grafana, PMM, RUM (Kibana), Loki, OpenTelemetry

  • In Progress: Migration to React / TypeScript / API Platform

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