Full Stack .NET Developer

On-site Full-time

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Qualifications

Proficiency in . NET framework and C# programming. Experience with front-end technologies such as HTML, CSS, and JavaScript. Knowledge of database systems, including SQL Server. Strong problem-solving skills and the ability to work in a collaborative environment. Excellent communication skills in English; knowledge of French or Dutch is a plus.

About the job

Join our dynamic team as a Full Stack . NET Developer in Brussels! You will have the opportunity to work on exciting projects, implementing cutting-edge technologies and developing innovative software solutions. As a key member of our development team, you will collaborate with other talented professionals to design, develop, and maintain web applications and services.

About Sopra Steria

Sopra Steria is a leading European consulting, digital services, and software development company. With a commitment to delivering exceptional services to our clients, we pride ourselves on our innovative approach and our ability to adapt to the ever-changing technology landscape. Join us and be a part of a team that values creativity, diversity, and professional growth.

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.NET Software Developer

ARHS Developments

Full-time|On-site|Leuven

ARHS Developments is in search of a talented .NET Software Developer to join our dynamic team in Leuven. As a key contributor, you will engage in both backend and frontend development, analyze requirements, and create comprehensive specifications. Your role will encompass the development and maintenance of applications, implementation of change requests, and…

Mar 21, 2022

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Fullstack .NET Developer

Sopra Steria

Full-time|On-site|Brussels

Join our dynamic team as a Fullstack .NET Developer, where you will play a crucial role in designing and developing innovative software solutions. You will collaborate closely with cross-functional teams to create high-quality applications that meet the needs of our clients.In this role, you will utilize your expertise in .NET technologies to build scalable web applications and services. Your contributions will help enhance our systems and drive efficiency across various projects.

Apr 24, 2025

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.NET Developer with Blazor Expertise

NRB

Full-time|Hybrid|Brussels, Brussels, Belgium

Are you ready for a new opportunity? Seeking fresh challenges to elevate your career?Join our dynamic Local Managed Staffing team at NRB as a .NET Developer specializing in Blazor!The NRB Group is a prominent leader in Belgium's ICT landscape, delivering a diverse array of IT services tailored to meet all of your technological requirements, from Infrastructure & Cloud solutions to Software Development, Consultancy, and Managed Staffing.Discover more about us here.We are currently seeking a skilled .NET Developer with a strong foundation in Blazor.

Feb 26, 2026

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Senior .NET Software Engineer (Freelance)

Brainsquare

Full-time|On-site|Antwerp, Antwerpen, Belgium

Brainsquare focuses on application development, integration solutions, and Atlassian collaboration tools. The team handles complex enterprise systems, designing and maintaining scalable application environments and integration frameworks. Consultants work closely with clients, using both hands-on skills and architectural expertise to deliver long-term value. Role overview This freelance senior .NET software engineer position is based in Antwerp. The assignment involves working on a high-impact enterprise project, developing and improving a business-critical platform that supports essential operational workflows. The technical landscape includes extensive integrations and complex requirements. Main responsibilities Develop and refine .NET applications and APIs Integrate systems with external and industrial frameworks Ensure stability, performance, and reliability in production environments Participate in technical and architectural discussions Support a practical, results-driven team culture What you will do Design and implement backend services and APIs using .NET Evaluate and improve data flows, integration points, and system interactions Contribute to error handling, logging, and performance optimization Collaborate with analysts and engineers to translate business needs into technical solutions Engage in code reviews and technical discussions Help deliver a scalable and reliable solution Location Antwerp, Antwerpen, Belgium

Apr 24, 2026

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.NET Software Engineer - Join Our Innovative Team

Brainsquare

Full-time|On-site|Brussels, Leuven or Antwerp, Vlaams Gewest, Belgium

About BrainsquareFor over 26 years, Brainsquare has forged strong partnerships with clients ranging from mid-market firms to large enterprises. We specialize in the seamless integration of critical IT applications, providing comprehensive services from design and development to round-the-clock management. With a diverse team of over 200 professionals across three continents, we deliver exceptional value to our partners 24/7.Our company culture reflects our commitment to our clients; we cherish our employees and clients as unique individuals, and we genuinely invest in understanding their narratives. At Brainsquare, we strive to create a fulfilling work environment because we believe that when employees are happy, they can achieve extraordinary results together. Our team is made up of strategic problem solvers who are not only creative and collaborative but also approach every challenge with a positive mindset.Your Mission:We are on the lookout for a Medior/Senior .NET Software Engineer to design and develop cloud-based solutions while managing projects within enterprise settings. You will become an integral part of our Enterprise Application Team, contributing to the design, development, and delivery of scalable applications that underpin vital business processes. Your responsibilities will span the entire software development lifecycle, from architectural design to implementation, testing, and deployment, all conducted within an agile framework. Please note: only candidates currently residing in Belgium or the Netherlands will be considered due to project requirements and the need for on-site collaboration.Your Key Responsibilities:Design and implement solutions based on high-level architecture specifications.Decompose complex requirements into manageable components.Develop applications utilizing the .NET platform (ASP.NET, .NET Core, .NET 6).Maintain code quality through code reviews and adherence to best practices.Collaborate with cross-functional teams to deliver robust solutions.Mentor junior developers and foster a culture of knowledge sharing within the team.Engage in agile ceremonies and contribute to initiatives aimed at continuous improvement.

Dec 2, 2022

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.NET Developer in Belgium

Talan

Full-time|On-site|Brussels

We are seeking a talented .NET Developer to join our dynamic team at Talan in Brussels. In this role, you will have the opportunity to work on innovative projects, collaborate with cross-functional teams, and contribute to the development of cutting-edge applications. If you are passionate about technology and eager to make a significant impact, we want to hear from you!

Apr 2, 2026

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Senior Software Engineer specializing in .NET C# and Angular

Rydoo

Full-time|Hybrid|Mechelen, Flanders, Belgium

At Rydoo, we strive to revolutionize expense management, allowing our users to dedicate their time to what truly matters instead of sifting through receipts. With over a million users, we empower individuals and organizations to submit, approve, and oversee expenses with unparalleled efficiency.Aligned with this vision, Semine has been dedicated to developing AI-driven solutions since 2015 that alleviate the burdensome elements of accounting, enabling finance teams to operate more intelligently.In July 2025, Semine integrated with Rydoo to pave the way for the future of financial automation. Together, we are crafting a comprehensive, AI-enhanced platform that streamlines accounts payable and expense management, facilitating simpler, faster, and smarter financial operations for businesses worldwide.Our global team of over 200 professionals believes in the power of technology to simplify lives. If you possess innovative ideas and aspire to create meaningful solutions, you will find a welcoming home with us.

Dec 24, 2025

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.NET Developer - Freelance Opportunity

Circet Benelux

Contract|On-site|Heverlee, Vlaams-Brabant, België

Join Us in Developing Our Service Cruiser Solution from Start to Finish!Take charge of the development, management, and continuous enhancement of our cloud infrastructure.Provide technical support for the Service Cruiser application.Build integrations with our software partners and optimize existing SQL queries.Exciting news! We are looking for you!What You'll Be DoingContribute to the development of our Service Cruiser solution (Backend), overseeing everything from specifications to implementation.Ensure software quality through code reviews, automated testing, and manual testing.Take responsibility for the development, management, and ongoing improvement of our cloud infrastructure.Provide technical support on the Service Cruiser application and other projects.Collaborate on integrations with our software partners.

Jan 26, 2026

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Full Stack .NET Developer

Sopra Steria

Full-time|On-site|Brussels

Join our dynamic team as a Full Stack .NET Developer in Brussels! You will have the opportunity to work on exciting projects, implementing cutting-edge technologies and developing innovative software solutions. As a key member of our development team, you will collaborate with other talented professionals to design, develop, and maintain web applications and services.

Jun 26, 2025

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Internship – Java or .NET Software Engineering

Brainsquare

Internship|On-site|Zaventem, Vlaams-Brabant, Belgium

About the RoleAre you nearing the completion of your IT or Computer Science degree and seeking an internship opportunity? At Brainsquare, we provide valuable hands-on internship experiences where you will collaborate with our enterprise software engineering team to tackle real-world challenges.As an intern, you'll join an established development team and take ownership of a specific component within a live project. This experience will enhance your skills in coding, teamwork, planning, and presentations, while you learn to navigate a professional environment using tools such as Jira and Confluence.Internship positions are available during two distinct periods:September–DecemberJanuary–JunePlease note that we only accept applicants who require an internship to fulfill their graduation requirements.Your Key Responsibilities:Collaborate with a full-stack software engineering team during live development sprints.Develop and implement features using Java or .NET, potentially integrating React for front-end development.Participate in sprint planning sessions and present your progress to the team.Learn to work in an agile environment and utilize tools like Git, Jira, and Confluence.Debug, test, and refine your code with guidance from experienced engineers.Communicate effectively within the team and take responsibility for your contributions to the project.

May 19, 2025

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.NET Technical Lead

Sopra Steria

Full-time|On-site|Brussels

Join Sopra Steria as a .NET Technical Lead where you will spearhead innovative projects and guide a talented team of developers. Your expertise in .NET technologies will be crucial as you architect solutions that drive our clients' success. Collaborate with cross-functional teams to deliver exceptional software solutions while mentoring junior developers and enhancing overall team performance.

Jun 26, 2025

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.NET Technical Lead

Sopra Steria

Full-time|On-site|Brussels

Join Sopra Steria as a .NET Technical Lead and take your career to the next level! We are seeking an experienced and passionate leader to guide our development team in delivering high-quality software solutions. You will play a critical role in shaping our technical direction and ensuring the successful execution of projects.

Apr 24, 2025

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Skilled .NET Cloud Developer

Sopra Steria

Full-time|On-site|Brussels

Join our dynamic team at Sopra Steria as a .NET Cloud Developer, where you will have the opportunity to work on innovative cloud solutions that drive technology forward. We are seeking a passionate developer who excels in building scalable applications using .NET technologies in a cloud environment. You will collaborate with cross-functional teams to design, develop, and implement robust cloud-based applications.

Apr 24, 2025

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.NET Architect

Sopra Steria

Full-time|On-site|Brussels

We are seeking a skilled and innovative .NET Architect to join our dynamic team in Brussels. As a .NET Architect, you will play a pivotal role in designing, developing, and implementing robust software solutions that meet our clients’ needs. You will collaborate with cross-functional teams to ensure the technical feasibility of solutions, driving best practices and ensuring high-quality deliverables. Your expertise in .NET technologies will be essential in guiding the development team and providing architectural oversight.

Jun 26, 2025

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Senior Software Engineer - .NET C#

Rydoo

Full-time|Hybrid|Mechelen, Flanders, Belgium

At Rydoo, we simplify expense management allowing individuals to concentrate on what truly matters, rather than on their receipts. Over one million users rely on us for swift and intelligent expense submission, approval, and control.Since 2015, Semine has shared this vision, developing AI technology that alleviates repetitive, tedious accounting tasks, empowering finance teams to work more efficiently.In July 2025, Semine and Rydoo united to revolutionize financial automation. Together, we're building an all-encompassing AI-driven platform that streamlines accounts payable and expense management, enabling businesses to operate more efficiently.Our global team of over 200 individuals believes that great technology should enhance life. If you're brimming with innovative ideas and want to create solutions that genuinely assist people, you'll thrive here.Rydoo at a GlanceAspiring international team33 nationalities speaking more than 15 languages9 hubs across 3 continentsUser-friendly spend management application for both iPhone and AndroidSupporting over 10,000 clients and more than 1 million users globally4.6 employer score on GlassdoorHybrid work policy

Jan 28, 2026

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.NET Cloud Developer - Innovative Tech Solutions

Sopra Steria

Full-time|On-site|Brussels

Join Sopra Steria as a .NET Cloud Developer and become a vital part of our dynamic team in Brussels. In this role, you will leverage your expertise in .NET technologies to design, develop, and implement cloud-based solutions that drive our clients' success.Your responsibilities will include collaborating with cross-functional teams to analyze requirements and create robust software architectures. You will also be involved in the full development lifecycle, from conception through deployment, ensuring high-quality code and optimal performance.

Jun 26, 2025

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Remote Front-end Developer with .NET Expertise

Almaviva de Belgique

Contract|Remote|Remote job

Job Responsibilities:Develop dynamic front-end applications using the Vue.js framework. Familiarity with additional frameworks such as React is advantageous.Create comprehensive unit tests for both front-end and back-end functionalities.Oversee the configuration of front-end builds, managing npm tasks effectively.Utilize TypeScript in modern web development practices.Craft and maintain styles using CSS and HTML with SASS.Contribute to the .NET implementation of microservices, ensuring code is reliable, scalable, secure, and testable, while meeting requirements and service level agreements.Establish validation mechanisms through unit and integration tests for both code bases.Implement OAUTH authentication protocols.Document technical solutions thoroughly, adhering to secure coding standards and incorporating logging and auditing functionalities.Communicate effectively and succinctly with both peers and senior management as necessary.

Mar 30, 2026

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Tech Lead & Solution Architect – C#.NET (m/w/d)

everience

Full-time|On-site|Brussels

Role Overview everience is looking for a Tech Lead & Solution Architect focused on C#.NET to join the team in Brussels. This position guides a group of developers and shapes the technical direction for software projects. What You Will Do Lead and mentor a team of developers working with C#.NET Design, implement, and maintain reliable software solutions Work with cross-functional teams to architect scalable systems Oversee project delivery and ensure technical quality

Apr 17, 2026

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Delphi Developer at Tunga | Remote

Tunga

Full-time|Remote|Remote job

Profile Overview: Seeking an innovative Delphi Developer.Developer Profile: Our client is in search of talented developers proficient in Object Pascal technologies, including Delphi, Free Pascal, and .NET.Key Responsibilities:Collaborate with a dynamic team to develop software components utilizing Object Pascal technologies (Delphi, Free Pascal, .NET).Participate in the software development process across various platforms, such as Windows, Web, Android, iOS, macOS, Linux, and Raspberry Pi.Coordinate with cross-functional teams to ensure smooth integration of software components.Technical Expertise Required:Demonstrated experience in software development with Object Pascal, showcasing proficiency in Delphi, Free Pascal, and .NET.Familiarity with development frameworks, including VCL, FMX, LCL, FNC, and ASP.NET.Deep understanding of project development for various platforms, including Windows, Web, Android, iOS, macOS, Linux, and Raspberry Pi.Strong analytical and problem-solving abilities, with a proactive approach to overcoming development challenges.Ability to collaborate effectively within a team-oriented environment.Excellent communication skills for consulting services and custom project development.Awareness of industry best practices and a commitment to delivering top-notch software solutions.

Feb 21, 2024

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Senior Software Developer

sia

Full-time|On-site|Brussels

Join our dynamic team at sia as a Senior Software Developer in the vibrant city of Brussels. We are seeking a talented individual who is passionate about software development and eager to tackle challenging projects. In this role, you will collaborate with cross-functional teams to design, develop, and maintain high-quality software solutions that meet user needs. Your expertise will play a crucial role in enhancing our products and services while ensuring optimal performance and scalability.

Mar 27, 2026

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