Mid Senior Java Developer On Site In Brussels Belgium jobs in Brussels – Browse 752 openings on RoboApply Jobs

Mid Senior Java Developer On Site In Brussels Belgium jobs in Brussels

Open roles matching “Mid Senior Java Developer On Site In Brussels Belgium” with location signals for Brussels. 752 active listings on RoboApply Jobs.

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Trasys International logo
Contract|On-site|Brussels, Brussels, Belgium

About Trasys International Trasys International partners with EU Institutions, supporting digital transformation projects across Europe. With more than 30 years of experience, the company focuses on delivering solutions in modernization, digital workspaces, cloud technologies, and IT security. Headquarters are in Brussels, and teams operate in cities such as…

Apr 16, 2026
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Trasys International logo
Contract|On-site|Brussels, Brussels, Belgium

About Trasys International Trasys International partners with EU Institutions, delivering IT solutions for over 30 years. Headquartered in Brussels, the company supports digital transformation for public sector clients across Europe. Service areas include solution modernization, digital workspaces, cloud technologies, and IT security. Offices and active accounts span Luxembourg, Amsterdam, Athens, Stockholm, and Geneva. Role Overview: Junior Java Developer (Near-Site in Brussels) This Junior Java Developer role supports a key European Institution client in Brussels. The position focuses on Java development within a large-scale, multicultural public sector environment. What We Look For Experience in Java development, ideally in sizable project teams Background working in multicultural or public sector settings Trasys International welcomes professionals motivated to contribute to international projects and deliver results in diverse teams.

Apr 16, 2026
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European Dynamics logo
Senior Java Developer

European Dynamics

Full-time|On-site|Brussels, Brussels, Belgium

We are excited to announce an opportunity for a proficient Senior Java Developer who is fluent in English and will be located in Brussels. The selected candidate will have the flexibility to work either from our office or on-site at client locations. In this initial assignment, the chosen individual will collaborate closely with project leaders and supervise the project team.Key Responsibilities: Design and architecture of software components and building blocks; Evaluation and review of existing system architecture; Coordination of technical architecture implementation; Development of functionalities, including testing, technical documentation, deployment, evaluation, and reporting; Conduct data analysis and create data models; Establish technical communication between project leaders and developers; Ensure the consistency of AV Media metadata with the respective media files; Analyze and index AV Media metadata files; Prepare metadata information for media file dissemination and publication. Qualifications: A university degree in IT with a minimum of 11 years of professional IT experience; Strong expertise in Java/J2EE; Advanced knowledge of Oracle and PL/SQL; Familiarity with NoSQL databases (MongoDB, Solr); Proficiency in tools such as CDI, JPA, Reflection, and Spring (MVC, Container, Scheduler, or QUARTZ Scheduler); Understanding of application design and SOA architecture as well as interoperability technologies; Experience with modeling tools and languages (e.g., UML); Proficient in Spring Security, Tomcat, Jira, and jQuery; Knowledge of software development methodologies (e.g., RUP, Agile); Competence in JSON/XML and HTML; Familiarity with middleware infrastructure and web servers, particularly WebLogic; Knowledge of ITIL standards and best practices will be considered an asset; Excellent command of the English language, both written and spoken. Benefits:If you are looking for a rewarding career in a dynamic and exciting company, where you will contribute as part of a team for a major European institution in a multicultural, multilingual environment with real opportunities to make a difference, we encourage you to submit your detailed CV in English, quoting reference: (9481/01/22).We offer a competitive salary package (either contract-based or full benefits), tailored to your qualifications and experience. All applications will be treated confidentially.

Jan 14, 2022
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Blackapple Solutions Ltd logo
Senior Java Developer

Blackapple Solutions Ltd

Contract|On-site|Brussels

Hello, I hope this message finds you well!My name is Ramya, and I represent Blackapple Solutions Ltd. We are currently seeking a talented and experienced Senior Java Developer for a contract position in Brussels, Belgium. Below is the detailed job description for your consideration. If you are interested, please respond with your updated CV and the following information so I can submit your application to our client, NIIT. Additionally, feel free to refer any friends or colleagues who may be interested in similar roles.Please provide the following details as soon as possible:Availability/Notice Period:Current Location:Total Experience:Years of Relevant Experience:Expected Pay Rate:Current Salary:Nationality/Visa:Are you willing to work in Brussels, Belgium (Yes/No):________________________________________Job Description:Role: Senior Java DeveloperLocation: Brussels, BelgiumJob Type: Contract (3 Months)Client: NIITKey Responsibilities:• Significant experience in Java development with a focus on functional analysis.• A minimum of 5 years of experience in Java development, including middleware management (IBM MQ, TIBCO), XML handling, and design patterns for transactional environments (R/R, F/F).• Desired knowledge in the following areas: • Concurrent Programming • Multithreading • Actor Model Patterns • Apache Ignite / GridGain • High Availability Systems • Docker • Familiarity with REST/API and the java.util.concurrent API.• Excellent written and verbal communication skills in English; knowledge of Dutch and/or French is a plus.Best Regards,RamyaJunior IT Recruiter (UK & Europe)Blackapple Solutions Ltd8 Cherry Tree Centre, Market Street, Huddersfield,West Yorkshire, United Kingdom, HD1 2ETContact: +44-2035142336 EXT (917)Website: www.blackapple-solutions.co.uk

Mar 15, 2016
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Altersolutions logo
Contract|On-site|Brussels

Join Altersolutions as a Senior Java/Angular Developer in Brussels. We are looking for a talented individual who is passionate about technology and eager to contribute to innovative projects. This role offers an opportunity to work in a dynamic environment where your skills will directly impact the success of our clients.

Jul 7, 2025
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Yenlo logo
Full-time|On-site|Brussel, Brussels, Belgium

Are you an entrepreneurial spirit with a passion for driving growth? Yenlo is seeking a Senior Business Development Representative to spearhead our expansion across Belgium, covering Flanders, Brussels, and Wallonia. In this pivotal role, you will cultivate strategic relationships with C-level executives at Belgian enterprise organizations, adeptly converting complex integration challenges into tangible business outcomes. The Belgian market presents unique opportunities: it is trilingual, compliance-driven (being the first EU nation to mandate NIS2 assessments), and boasts significant financial, pharmaceutical, and government sectors with pressing integration needs. This position requires you to be based in or around Brussels, Belgium.About YenloYenlo is a premier global integration specialist with over 15 years of experience in assisting enterprises to connect, automate, and secure their digital ecosystems. Recognized as a Platinum WSO2 Partner (Partner of the Year 2018–2020, 2022) and a Boomi Advanced Partner, we provide cutting-edge integration, API management, and Identity & Access Management solutions to enterprises throughout Europe. Our team includes the largest number of certified WSO2 consultants globally, along with three esteemed WSO2 Ambassadors.With a workforce of more than 100 professionals, predominantly consisting of highly qualified technical IT specialists, we are dedicated to delivering innovative, high-quality projects. Our organization is international, featuring over 18 nationalities, with English as our corporate language, and serving clients worldwide.We maintain offices and teams in the Netherlands (Schiphol-Rijk (HQ) and Dongen), Germany, Spain, Sri Lanka, the United States, and Canada. Our diverse clientele ranges from mid-sized organizations to large enterprises across various sectors, including financial services, government, healthcare, education, industry, retail, transport, and logistics. Notable clients include the European Commission, Honda, CEVA Logistics, Hanseatic Bank, Nexeye, and Basic-Fit.Our headquarters in Schiphol-Rijk continues to expand our European footprint. The Netherlands represents our home market, where we have established our most robust client base, profound network, and ambitious goals. We are now looking for a committed commercial presence to unlock the full potential of the Belgian market.

May 1, 2026
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Sopra Steria logo
Full-time|On-site|Brussels

Join our innovative team at Sopra Steria as a Java Developer, where you will play a crucial role in developing high-quality software solutions. You will work collaboratively with other developers and stakeholders to design, implement, and maintain Java-based applications. If you are passionate about technology and eager to contribute to exciting projects, we want to hear from you!

Apr 24, 2025
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Talan logo
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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Sword Technologies logo
Contract|On-site|Brussels, Brussels, Belgium

Join our dynamic team as a Full-stack Developer where you will be responsible for developing both the front-end using Angular, HTML, CSS, and JavaScript and the back-end with Java and Spring Boot.Design, build, and maintain robust APIs, databases, and servers to support our applications.Ensure the highest standards of security, performance, and scalability in your solutions.Write clean, efficient code while performing regular testing, debugging, and documentation of your work.Contribute to the overall architecture and technical design of our systems.

Apr 30, 2026
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European Dynamics logo
Full-time|On-site|Brussels, Brussels, Belgium

Role Overview European Dynamics is looking for a Full-Stack Developer (Java, Angular) to join the team in Brussels, Belgium. This role supports both in-house projects and client assignments, with an initial focus on working alongside a major client’s IT team. Clear communication and teamwork are central to this position. What You Will Do Redesign and redevelop backend services that deliver APIs for front-end applications and integrate with other IT systems. This includes APIs for data upload, download, and manipulation. Maintain and improve a middleware layer that connects the front end to PaaS software, managing authentication and authorization. Work with specialists in front-end development, database management, data engineering, and business intelligence to refine the overall architecture. Create and update technical documentation to ensure clarity and knowledge sharing. Contribute to front-end development tasks when required. Support the upgrade and deployment of commercial software tools used for data processing and risk scoring. Collaborate regularly with business analysts, front-end developers, DevSecOps engineers, project leaders, and other developers. Location This position is based in Brussels, Belgium, with work performed at company headquarters or on client sites as needed.

Apr 17, 2026
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Rubrik logo
Full-time|On-site|Brussels, Belgium

Rubrik is hiring a Channel Development Manager based in Brussels to support growth in the Belgian market. This position focuses on building and maintaining strong relationships with channel partners. Role overview The Channel Development Manager works closely with partners, providing them with the tools and support needed to achieve shared goals. The role involves shaping channel strategies and contributing to revenue growth by introducing effective solutions. Key responsibilities Develop and nurture partnerships within the Belgian channel ecosystem Equip partners with resources and support to help them succeed Contribute to channel strategy and drive revenue through new solutions Location This role is based in Brussels, Belgium.

Apr 28, 2026
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Nuvei logo
Full-time|On-site|Brussels, Brussels, Belgium

In the fast-paced world of payment processing, businesses are increasingly seeking trusted and strategic partners to fuel their growth.Introducing Nuvei, a leading Canadian fintech company dedicated to accelerating the success of clients globally. Our cutting-edge, modular, and scalable technology empowers businesses to seamlessly accept next-generation payments, explore diverse payout options, and leverage comprehensive services including card issuing, banking, and risk and fraud management. With a presence in over 200 markets, local acquiring in 50 countries, and support for 150 currencies alongside 700 alternative payment methods, Nuvei equips clients with the tools and insights needed to thrive in both local and global markets through a single integration.At Nuvei, we embody our core values and are passionate about tackling complex challenges. We are committed to continuously enhancing our products and delivering exceptional customer service. We are always on the lookout for extraordinary talent to join us on our journey! Your MissionWe are seeking a dynamic and results-oriented Senior Business Development Manager to join our rapidly growing Benelux team. Reporting directly to the Vice President of Sales for Benelux and Nordics, you will play a pivotal role in expanding Nuvei’s market presence and driving strategic growth throughout the region.In this position, you will help accelerate the distribution and adoption of Nuvei’s innovative payment solutions, focusing primarily on the ecommerce, financial services, digital goods, and marketplaces sectors. Your responsibilities will include identifying new business opportunities, forging long-lasting partnerships, and collaborating closely with cross-functional teams to deliver exceptional value to our clients and partners.Key Responsibilities:Build and manage a robust pipeline of sales opportunities, ensuring accurate sales forecasts are provided to senior management.Develop and implement innovative sales strategies while identifying high-value prospects.Present sophisticated technical products and pioneering solutions to C-level executives.Directly establish and nurture new sales partnership programs with major merchants in the Benelux region.Translate client business requirements into technical specifications, leveraging Nuvei solutions to address customer needs.Maintain strong pipeline management through Salesforce, ensuring accurate performance forecasts and consistent results among Tier 1 and Tier 2 prospects.

Feb 18, 2026
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Trasys International logo
Contract|On-site|Brussels, Brussels, Belgium

Who Are We?Trasys International is a vibrant global organization, recognized as a trusted partner to EU Institutions. With a robust commitment to excellence and a 30-year legacy of delivering top-notch solutions, we are devoted to empowering our clients to navigate the complexities of digital transformation. We aim to provide the right talent at the right time to meet evolving challenges. We continuously seek skilled professionals eager to engage in demanding international projects and deliver high-quality results in diverse, multicultural settings. Our expertise spans modernization of solutions, digital workspaces, cloud technologies, and IT security. Our headquarters are located in Brussels, complemented by our active offices across Europe, including Luxembourg, Amsterdam, Athens, Stockholm, and Geneva.Are You the Right Fit?We are currently searching for a Junior Enterprise Architect to join our team in Brussels, serving one of our key clients within the European Institutions. We are looking for individuals who excel in large-scale, complex environments and preferably have experience in multicultural public-sector or institutional settings.Your Responsibilities (Non-Exhaustive)As a Junior Enterprise Architect, you will be pivotal in aligning the organization's business goals with its technology strategy.Business & Architecture StrategyDevelop business architecture models that align with the organization’s strategic objectives.Ensure that project and program strategies are fully integrated and consistent with business priorities.Create and implement a long-term business vision along with a multi-year architecture roadmap.Governance, Analysis & OptimizationIdentify optimization opportunities and cost-reduction measures across IT and business domains.Evaluate existing systems to detect discrepancies, inefficiencies, security risks, or vulnerabilities.Conduct research to recommend improvements in operations, processes, or technology.Guidance & CommunicationProvide expert input on business architecture, systems processes, and enterprise-wide design principles.Facilitate group sessions and stakeholder workshops.Present architectural concepts and recommendations to diverse audiences.

Mar 16, 2026
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European Dynamics logo
Senior Java Developer

European Dynamics

Full-time|Hybrid|Brussels, Brussels, Belgium

We are excited to announce an opening for a Senior Java Developer fluent in English, who will contribute their expertise while being based in Brussels, Belgium. The successful candidate will operate either from our office or on-site at client locations. This role entails collaborating closely with a prominent client's IT team as part of our dedicated team.Your Responsibilities:Design, develop, and maintain Information Systems testing scenarios, including new feature testing and non-regression testing;Engage in technical working groups, progress meetings, and discussions with end users, business managers, and project teams (comprising business analysts, project managers, and developers);Create and update technical documentation;Support analysis, deployment, evaluation, and reporting efforts.

Mar 2, 2026
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Trasys International logo
Contract|On-site|Brussels, Brussels, Belgium

Join Our Team!Trasys International is a leading global provider of IT solutions, dedicated to serving EU Institutions for over 30 years. Our mission is to empower our clients in navigating the complexities of digital transformation by providing exceptional talent precisely when it's needed. We take pride in our commitment to excellence and our track record of delivering high-quality solutions.We're on the lookout for a skilled IT Project Manager to support one of our key clients in Brussels - a prominent European Institution. If you're experienced in managing large-scale projects within multicultural public sector environments, you may be the perfect fit.Your Responsibilities:Oversee daily project operations, ensuring deliverables meet quality standards and are completed within time and budget constraints.Lead and motivate project teams, monitor performance, and prioritize workloads.Develop and manage project plans, identify risks, and create contingency strategies.Implement change control and configuration management processes.Facilitate team development and conduct meetings for problem-solving.Conduct audits and quality checks, generating necessary reports.Guide projects through the entire software development life cycle, from business case formulation to rollout.Act as a liaison between IT and business stakeholders to define and translate business needs into actionable tasks.Monitor data integration processes and interdependencies with other systems.

Feb 20, 2026
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AppTweak logo
Full-time|On-site|Brussels, Brussels, Belgium

Join our dynamic and innovative team at AppTweak as a passionate Frontend Developer, and help us scale new heights! In this role, you will collaborate closely with our backend developers to create seamless client-side logic, while also bridging the gap between visual elements and the server-side architecture.You will report directly to your Engineering Manager and work alongside a talented squad of developers. For more insights, check out our Tech Stack page!

Mar 26, 2026
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Arηs Group, Part of Accenture logo
Full-time|On-site|Brussels

Join Arηs Group, a member of Accenture, as we embark on complex web development initiatives. We are seeking seasoned Java Full Stack Developers who will craft high-quality solutions tailored to our business needs.This role involves collaborating within our dynamic team, primarily focusing on developing a middleware application that bridges back-end systems with web front-end solutions.Main ResponsibilitiesArchitecture and design of information systems.Evaluation of existing systems' architecture.Design and build component architecture and foundational blocks.Integration analysis of diverse information systems.Data analysis and modeling.Coordinate the implementation of technical architecture.Serve as the technical liaison between project leaders and developers.Create comprehensive software architecture documentation.Engage in technical working groups, progress meetings, and user consultations.Assist with testing, technical documentation, deployment, evaluation, and reporting.

Oct 13, 2025
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ARHS Group logo
Full-time|On-site|Brussels

Join the dynamic team at ARHS Group, a proud member of Accenture, where we are seeking a skilled Java Fullstack Developer to enhance our capabilities in Brussels, Belgium.Key Responsibilities:Develop robust applications using Java with a focus on the Spring framework or JEE.Write high-quality, testable, and efficient code while following best practices in software development.Utilize strong database skills and proficiently handle SQL queries.Embrace a DevOps mentality to streamline processes.Implement and work with microservices architectures.Use testing frameworks and tools to ensure application reliability.Adapt to Agile methodologies including Scrum, Jira, Confluence, code reviews, and user story development.Collaborate with cross-functional teams to deliver high-quality software solutions.Propose innovative solutions and demonstrate a proactive attitude.Maintain a results-oriented approach to achieve project objectives.Fluency in English and French is essential.A willingness to engage in full-stack development with experience in Angular considered a plus.At ARHS Group, we value collaboration, learning, and building strong relationships with our clients, colleagues, and communities. We offer flexible working arrangements to meet your work/life needs while encouraging in-person interactions.

Mar 20, 2025
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Cowboy logo
Full-time|On-site|Brussels, Brussels, Belgium

About UsFounded in 2018, Cowboy is revolutionizing the way urban riders experience transportation through our beautifully designed and fully connected electric bikes. Our vision is to create an ideal mode of transport that enhances urban living, making our cities more mindful and sustainable for everyone. Cowboy has received multiple Red Dot Awards for its innovative designs in 2018, 2019, and 2021, establishing itself as a disruptive force in the market.At Cowboy, we believe in the spirit of individuality and courage among our riders and our team. We aim to deliver an unparalleled riding experience through a blend of cutting-edge technology, exceptional design, and outstanding customer service.The OpportunityWe are seeking a detail-oriented and motivated Senior Accountant to join our dynamic Finance Team. Reporting directly to the Head of Accounting, you will play a pivotal role in managing our financial processes while also contributing to various ad-hoc projects. This position offers an exciting opportunity for professional growth within an entrepreneurial environment.Your initial focus will be on hands-on tasks as we work towards further automating our accounting processes. A proactive approach and a keen understanding of our current procedures will be essential for success in this role.Key Responsibilities:Execute daily accounting functions with precision in collaboration with the Finance team.Engage actively in monthly and quarterly closings, reporting, and reconciliations.Assist in accruals and provisions processes.Oversee inventory bookkeeping to ensure invoices align with the P2P process.Manage fixed assets, including regular reviews and depreciation/impairment registrations.Conduct AR follow-ups: aging reviews, invoicing, credit notes, bad debt management, and collections.Review and process travel and expense claims, ensuring compliance with internal policies.Handle cash management tasks, including payments, cash allocation, and monitoring cash flow.Participate actively in the external audit process.Coordinate statutory (BE GAAP) and tax compliance matters.Support other Finance team members in automating AP and financial processes as well as establishing internal controls.Manage ad-hoc requests and projects as necessary.

Feb 23, 2026
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Sopra Steria logo
Java Developer

Sopra Steria

Full-time|On-site|Brussels

Join Sopra Steria as a Java Developer and contribute to innovative projects that shape the future of technology. You will work in a dynamic environment alongside a talented team, developing high-quality software solutions that meet our clients' needs.

Jun 26, 2025

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