Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
Location: Brussels, Belgium (Hybrid: 2-3 days remote per week) Type: Freelance Contract Levels Available: Medior (approx. 3 years exp.) | Senior (approx. 10 years exp.) | Junior (approx. 1 year exp.) Language Requirement…
Skills: Java, API Design, SOA, REST, SOAP
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
Want to create a positive impact through AI? Founded as one of the first AI companies in Belgium with a mission to create a meaningful impact, we are believers in automation and efficiency. We see Artificial Intelligence…
Skills: AI Engineering, MLOps, LLMs, RAG Pipelines, Python
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: Kotlin, Android SDK, Jetpack Compose, MVVM, Clean Architecture
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: Swift, Objective-C, SwiftUI, Combine, UIKit
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: Java, Spring Boot, Spring Security, Spring Data, RESTful APIs
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: Python, Scala, Java, SQL, Apache Spark
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: SQL, Power BI, Tableau, Looker, Metabase
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: Project Management, Agile, Scrum, V-model, Jira
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: C#, .NET Core, .NET 8, ASP.NET Core, RESTful APIs
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: Scrum, Agile Methodologies, Facilitation, Impediment Removal, Agile Metrics
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: Functional Analysis, Requirement Analysis, Functional Specifications, Functional Architecture, User Journey Mapping
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium · Hybrid
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 …
Skills: Business Analysis, Functional Specifications, User Stories, Agile Methodologies, Scrum
Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Brussels-Capital, Belgium • Hybrid
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Design, implement, and govern scalable API and Service-Oriented Architectures for high-impact client projects. Act as a bridge between business requirements and technical execution while managing API lifecycles and security standards.
Requires a strong background in Java and API/SOA development with experience in platforms like Axway or Apigee. Candidates must be fluent in English and have working proficiency in either French or Dutch.
Location: Brussels, Belgium (Hybrid: 2-3 days remote per week)
Type: Freelance Contract
Levels Available: Medior (approx. 3 years exp.) | Senior (approx. 10 years exp.) | Junior (approx. 1 year exp.)
Language Requirements: Fluent in English (3/4 minimum) AND working proficiency in either French or Dutch (3/4 minimum).
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! 🏆
Peer-to-Peer Management: Our proximity management by peers fosters open 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. Benefit from a comprehensive training offer: access to our e-learning platform, financing of certifications, and robust knowledge-sharing tools.
Vibrant Community: Your year will be animated by group and agency events: annual convention, participation in trade fairs, summer party, and plenty of formal & informal afterworks.
On behalf of our fast-growing division, we are looking for API/SOA Architects at different seniority levels (Junior, Medior, and Senior) to join our consultant pool in Brussels.
In this role, you will design, implement, and govern robust API and Service-Oriented Architectures (SOA) for high-impact client projects. You will act as the bridge between business requirements and technical execution, ensuring scalable, secure, and modern integration landscapes.
Depending on your level of seniority (Junior/Medior/Senior), your daily responsibilities will include:
Architectural Design: Designing and implementing highly scalable, secure, and performant API and SOA architectures using REST, SOAP, and Microservices principles.
API Development & Governance: Developing APIs (primarily Java-based) and setting up API governance, lifecycle management, and security standards (OAuth2, JWT, Swagger).
Platform Integration: Configuring and leveraging API Management and Integration platforms (e.g., Axway, Apigee, WSO2, Red Hat Fuse).
Cloud & Modern Infrastructure: Deploying and managing integration components within public cloud environments (Azure, AWS, or GCP).
CI/CD & Quality Assurance: Setting up automated deployment pipelines and testing integration flows using tools like SOAPUI, Postman, and ReadyAPI.
Collaboration: Working within Agile/Scrum teams, documenting architectures in Jira/Confluence, and aligning with diverse business and technical stakeholders.
Experience: * Junior: ~1 year of experience in API development/design.
Medior: ~3 years of experience in API/SOA architecture and development.
Senior: 10+ years of deep technical expertise in enterprise integration and architecture.
Strong background in Java and API/SOA development.
Deep understanding of API & Web Service standards: OAuth2, Swagger, JWT, SOAP, WSDL, REST, Microservices.
Hands-on experience with API/ESB Platforms: Axway, Apigee, WSO2, or Red Hat Fuse.
Familiarity with public cloud platforms (AWS, Azure, or GCP).
Strong skills in XML and JSON modeling.
Experience with testing tools (SOAPUI, Postman, ReadyAPI) and CI/CD pipelines.
Methodology: Comfortable working in Agile/Scrum environments; proficient with Jira and Confluence.
Languages: Excellent communication skills in English (written & spoken) accompanied by intermediate/advanced professional proficiency in either French or Dutch.
First Contact: A quick phone call to discuss your freelance aspirations, rate, availability, and what we can offer you.
Meeting: An opportunity to get to know each other virtually or in person, exploring your professional background and alignment with Smile’s values.
Business Interview: A deep-dive technical discussion with one of our senior integration experts to assess your skills and map out your goals.
Creating Impact Together
We are Technology experts & Business partners. AI powered. Enabling digital autonomy. Smile is a European digital services group operating in 7 countries and bringing together 1,500 people. Our value proposition is built around three accelerators across all our areas of expertise: - Digital Autonomy : we provide solutions built on open source or European sovereign software, designed to keep full control over data, infrastructure and technology choices. - Agentic AI : native and integrated from day one, in every project, every team, every method, it accelerates transformation, optimises operations and unlocks new sources of business value. It is the backbone of everything we deliver. - The Factory : our factories bring together multidisciplinary teams, experienced in agile methods, capable of delivering exactly what they have promised. We operate across five domains: AI & Data, Customer Experience, Business Applications, Cloud Transformation & Management and Product & Industrial Systems. Smile relies on a network of highly specialised brands: Alter Way for cloud and hosting, UX-Republic for UX design and CRO, SensioLabs for Symfony, Neopixl for mobile and wearables, Synotis for data strategy in Switzerland, Creative Style for e-commerce in Germany.
Offices: 20 rue des jardins, Asnières sur seine, Ile de France 92600, FR · 7, Boulevard Louis XIV, Lille, Hauts-de-France 59800, FR · 10-12 rue Nicolas Appert, Nantes, 44000, FR · 2, Boulevard Jean-Jacques Bosc, Bordeaux, Nouvelle-Aquitaine 33130, FR · 107 boulevard de Stalingrad, Lyon, 69000, FR
There are currently 32 open technology positions in Woluwe-Saint-Pierre - Sint-Pieters-Woluwe, Belgium listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include Smile, Sagacify, among others. Browse the listings above to see every active employer.
Yes — 32 of the 32 open technology positions offer remote or hybrid work (0 remote, 32 hybrid).
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