Senior PHP Developer (Symphony)

IESF AG; Brussel; On-site; EUR 110,000 - 150,000; Full time

Benefits offered by this job

Impactful Work

Cutting-Edge Projects

Continuous Learning

Collaboration & Knowledge Sharing

Professional Growth

Work-Life Balance

International Environment

Job summary

IESF AG in Brussels, Belgium, seeks a Senior PHP (Symfony) developer to join as a long-term Contractor (B2B) / Freelancer based in Brussels. You will build and maintain robust back-end services using Symfony, taking ownership of the full development lifecycle from analysis to deployment.

You bring 15+ years in IT, a university IT degree, and deep Symfony expertise, with strong knowledge of MVC, XML/JSON/REST, and Oracle RDBMS. English proficiency is essential.

Qualifications

• 15+ years of professional IT experience.
• University degree in IT or related field.
• Deep hands-on Symfony PHP experience.
• Strong knowledge of MVC frameworks and modern web tech.
• Familiar with XML/JSON/REST data flows and Oracle RDBMS.
• Experience with CI/CD tools and Jira, Git, Bamboo.

Responsibilities

• Build and maintain robust back-end services and dynamic web apps with PHP (Symfony).
• Own the full development lifecycle from analysis to deployment.
• Write clean, tested code and ensure W3C-compliant front-ends.
• Shape and evolve our technical architecture for growth.

Skills

PHP Symfony

MVC frameworks

JavaScript

Angular

Node.js

HTML5/CSS

XML/JSON/REST

Oracle RDBMS

CI/CD

Jira

Git

Bamboo

English

Text mining

SOA

Education

University IT degree

Tools

Jira

Git

Bamboo

Job description

Our client is a leading supplier of software products in the field of eCustoms internationally.

The company supplies software products and IT services to European Union Institutions and Agencies, international organisations and national government administrations.

The company employs over 1100 engineers, IT experts and consultants (around 3% PhD, 41% MSc and 54% BSc or equivalent). The group's staff is multilingual and multinational with in-depth experience in the delivery of services to the government sector worldwide.

Currently we are looking for a Senior PHP (Symphony) developer to join the team as a long-term Contractor (B2B) / Freelancer.

Based in Brussels, Belgium.

Tasks

• Build and maintain robust back-end services and dynamic web applications using PHP (Symfony) and other modern MVC frameworks.
• Take ownership of the full development lifecycle - from technical analysis and design to testing, documentation, and deployment - while ensuring front-end applications meet W3C standards.
• Write clean, reliable, and thoroughly tested code by applying best practices and a methodical approach.
• Play an active role in shaping and evolving our technical architecture to support future growth and innovation.

Requirements

• At least 15 years of professional experience in the IT sector
• A university degree in IT or a related field
• Deep hands-on expertise with PHP Symfony framework.
• Solid background in using MVC-compliant frameworks and scripting languages (e.g., JavaScript/Angular, Node.js), ideally within service-oriented architectures
• Strong knowledge of modern web technologies across data and middle-tier layers.
• Proficiency in HTML5, CSS, Angular, and Bootstrap for building responsive, user-friendly interfaces
• Experience working with XML and JSON/REST for managing data flows.
• Strong understanding of Oracle RDBMS.
• Familiarity with CI/CD practices and tools such as Jira, Git, and Bamboo.
• Experience with AngularJS is a significant plus.
• Exposure to text-mining operations is considered an asset.
• Excellent command of English, both written and spoken.

Benefits

• Impactful Work - Contribute to mission-critical systems and help shape the evolution of the organization's technical architecture.
• Cutting-Edge Projects - Work with modern frameworks (Symfony, Angular, Node.js) and advanced tools (CI/CD, Git, Bamboo) in a service-oriented architecture environment.
• Continuous Learning - Opportunities to deepen your expertise in emerging technologies such as text mining, data flows, and next-generation web standards.
• Collaboration & Knowledge Sharing - Join a team of seasoned professionals where your experience is valued, and knowledge exchange is encouraged.
• Professional Growth - Gain exposure to large-scale, high-impact IT projects and expand your skills across front-end, back-end, and data layers.
• Work-Life Balance - Flexible working arrangements to support productivity and well-being.
• International Environment - Be part of a multicultural, English-speaking workplace that values diversity and inclusivity.