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Alter Solutions Group
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Senior Web Developer - PHP/React - ASAP Start - Freelance / CDI
Belgium
· Full-time
·
Mid-Senior
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.
TECH STACK
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
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
Key Skills
Ranked by relevance
react
typescript
javascript
bootstrap
symfony
mariadb
grafana
docker
devops
istio
loki
git
php
elk
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- Posted
- Jul 16, 2025
- Type
- Full-time
- Level
- Mid-Senior
- Location
- Namur
- Company
- Alter Solutions Group
Industries
IT Services
IT Consulting
Categories
Engineering
Information Technology
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