Openapi Jobs In Brussels - 28 Job Positions Available

A job at Proximus? You’ll find that everything revolves around the idea ‘Think Possible’. This means: we always assume that something is possible, even if it seems impossible. Well, especially so, actually. Call it a way

Technical Lead / Full Stack .NET Developer Start Date: 03 August 2026 Contract Duration: Until 31 July 2027 Work Arrangement: Hybrid (remote work possible) Workload: Full-time Position Overview We are seeking an experienced Technical Lead /

Mission Overview: Keystone Solutions is seeking an Expert Test Engineer for a consultancy mission at a client site. The client is a federal independent administration focused on providing protection to individuals at risk of persecution or

Full-Stack Software Engineer We are looking for a Full-Stack Software Engineer to develop and maintain a modern, data-intensive web platform supporting critical law enforcement operations. You will work across the full technology stack, building scalable backend

Job Description: For over 150 years, our dedication to being the Global Hausbank for our clients has been driven by our people – in around 60 countries and across more than 150 nationalities. Their deep understanding,

Job Title: .NET Integration Developer (Azure) Location: Brussels, Belgium (Hybrid – Minimum 2 days onsite per week) Job Type: Contract Job Description We are looking for an experienced .NET Integration Developer to design, develop, and maintain

Application Developer (Java Full Stack) We are looking for an experienced Application Developer to support the takeover, maintenance, modernization, and development of a portfolio of business-critical applications within a large enterprise environment. You will work on

Senior .NET Full-Stack Developer We are looking for an experienced Senior .NET Full-Stack Developer to design, develop, and maintain high-quality software solutions built on Microsoft technologies. You will play a key technical leadership role, ensuring code

.NET Integration Developer (Azure DevOps) We are looking for an experienced .NET Integration Developer to design, develop, and maintain a scalable integration platform in an Azure environment. You will work within a SAFe Agile team, supporting

Functional Analyst Location: Brussels, Belgium Work Model: Hybrid Start Date: ASAP Contract Duration: 6 Months We are seeking an experienced Functional Analyst with 10+ years of experience to join a project in Brussels. The ideal candidate

Full Stack Developer (Java Spring Boot & ReactJS) Location: Brussels, Belgium Work Model: Hybrid Start Date: ASAP Contract Duration: 6 Months We are looking for an experienced Full Stack Developer with 8–10 years of experience to

API Test Automation Analyst Location: Brussels, Belgium Work Model: Hybrid Start Date: ASAP Contract Duration: 6 Months We are looking for an experienced API Test Automation Analyst with 8–10 years of experience to join a dynamic

About Smile & The Opportunity 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

Location: Brussels, Belgium (Hybrid: 2-3 days remote per week) Type: Freelance Contract Experience Level: Senior / Expert (10+ years of experience) Languages: French or Dutch (Professional working proficiency, min. 3/4) OR English (Professional working proficiency, min.

Location: Brussels, Belgium (Hybrid: 2-3 days remote per week) Type: Freelance Contract Languages: French or Dutch (Professional working proficiency, min. 3/4) OR English (Professional working proficiency, min. 3/4) About Smile Passionate about tech, digital, and innovation?