Location: Brussels, Belgium (Hybrid: 2-3 days remote / week)

Contract Type: Freelance (Independent Contractor)

Seniority Levels Available: Junior (1+ year exp.) | Medior (3+ years exp.) | Senior (10+ years exp.)

About Smile

Passionate about tech, digital, and innovation? Join the 1,800 employees at Smile, the European leader in open-source integration, spread across 20 agencies in 9 countries. Collaborative spirit and knowledge sharing are at the heart of our DNA. Our experts push the boundaries of open source every day to build a smarter, more efficient, and more responsible digital world. Here, we don't just follow trends, we create them! 🌟 Join Smile in Brussels and take part in projects that truly matter! 🏆

On behalf of one of our major premium clients based in Brussels, we are looking for talented API / SOA Analysts to join dynamic, forward-thinking Agile teams.

Mission & Responsibilities

As an API / SOA Analyst, you will bridge the gap between business requirements and technical implementation. Your main mission will be to design, model, and analyze integration solutions that ensure robust data exchange across enterprise systems.

Your daily responsibilities will include:

• Requirements Gathering: Leading functional analysis and collecting business requirements from stakeholders.

• API & Service Design: Designing and modeling API/SOA services using UML and standard data modeling practices.

• Technical Specifications: Defining precise integration logic, data mappings, and transformations (XML, JSON).

• Architecture Support: Aligning designs with Event-Driven Architecture (EDA) principles and REST/SOAP standards.

• Testing & Quality Assurance: Conducting functional testing of web services to ensure compliance with technical specifications.

• Agile Collaboration: Actively participating in Scrum ceremonies, documenting architectures in Jira/Confluence, and collaborating with development teams.

Your Profile

Core Technical Skills:

• Strong expertise in API & SOA principles (REST, SOAP).

• Proficiency in UML and advanced data modeling.

• Hands-on experience with XML & JSON transformations.

• Solid understanding of Event-Driven Architecture (EDA).

• Familiarity with version control tools (GIT) and web services testing.

• Proficient with Jira and Confluence in an Agile/Scrum environment.

Experience & Seniority Levels:

• Junior: 1+ year of experience in system/integration analysis.

• Medior: 3+ years of experience with an autonomous approach to API design.

• Senior: 10+ years of experience, capable of driving architectural choices and mentoring junior team members.

Language Requirements:

• English: Professional proficiency (Minimum 3/4) AND

• Dutch OR French: Professional proficiency (Minimum 3/4)

Why Smile? 😊

• Peer Management: Our proximity management by peers fosters dialogue and the implementation of a tailored career path.

• Continuous Learning: Because the digital sector is in constant motion, Smile is committed to making you an expert in your field, thanks to a comprehensive training offer: access to an e-learning platform, financing of certifications, knowledge-sharing tools...

• Vibrant Community: Your year will be animated by group and agency events: annual convention, participation in trade fairs, summer party, formal & informal afterworks.

The Next Steps 🚀

1. First contact: A phone call to discuss your aspirations and what we can offer you.

2. Meeting: An opportunity to get to know each other and explore your professional background.

3. Business interview: A discussion with one of our experts to assess your skills and define your goals.