Frontend Developer at AppTweak | Brussels, Belgium

AppTweakBrussels, Brussels, Belgium

On-site Full-time

Clicking Apply Now takes you to AutoApply where you can tailor your resume and apply.

Experience Level

Experience

Qualifications

Your Responsibilities:Design and develop new user-facing featuresCreate reusable code and libraries for future applicationsEnsure the technical feasibility of UI/UX designsIdentify elegant solutions to usability challengesOptimize applications for peak performance and scalabilityStay abreast of emerging web technologies to enhance AppTweak's capabilitiesEngage in code reviews, collaborations, and knowledge sharingWhat we expect from you:Essential Qualifications:Bachelor's or Master's degree in Computer Science or a related fieldMinimum of 2 years of experience as a Frontend Developer using modern frameworks (React, Angular, Vue)Proficient in independently executing projects from inception to completionFluent in EnglishUnderstanding of asynchronous request handling and APIsDriven to learn about and adapt to modern web technologiesPossess a strong entrepreneurial mindset: resourceful, autonomous, and creative in problem-solving within a fast-paced environmentTeam-oriented attitude with a collaborative spirit

About the job

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!

About AppTweak

At AppTweak, we are committed to innovation and excellence in the app analytics space, providing tools that empower developers and marketers to optimize their mobile applications effectively. Join us and be a part of a vibrant company culture that values creativity, collaboration, and continuous learning.

Similar jobs

Browse all companies, explore by city & role, or SEO search pages. View directory listings: all jobs, search results, location & role pages.

1 - 20 of 779 Jobs

Search for Full Stack Developer At Sword Technologies Brussels Belgium

779 results

Select all on this page (20)

Apply

Full-stack Developer at Sword Technologies | Brussels, Belgium

Sword Technologies

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 i…

Apr 30, 2026

Apply

Data Engineer at Sword Technologies | Brussels, Belgium

Sword Technologies

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

Role overview Sword Technologies is seeking a Data Engineer to join its Brussels team. The position centers on building, optimizing, and maintaining data pipelines and Lakehouse structures within the Microsoft Fabric ecosystem. Reporting to the solution architect, the Data Engineer collaborates with technical teams to translate architectural plans into scalable, efficient data delivery systems. Main responsibilities Delta Lake implementation: Develop and refine physical storage layers (Bronze, Silver, Gold) using Delta Lake formats. Apply effective partitioning and Z-Ordering to improve performance and organization. Pipeline execution: Design and implement ETL/ELT workflows with Fabric Data Factory, Spark, and custom code to move data from multiple sources into OneLake. Custom application development: Build and maintain high-performance data processing modules or custom connectors using Java and/or Python. Cross-platform integration: Create data bridges between Microsoft Fabric and external platforms such as AWS, GCP, or on-premises systems, using Shortcuts and APIs. Code-based transformations: Write complex logic in Spark Notebooks for detailed data cleansing and business logic. System testing: Conduct unit testing, data profiling, and performance benchmarking to ensure the stability and integrity of data pipelines. Location This role is based in Brussels, Belgium.

Apr 23, 2026

Apply

Java Full Stack Developer

Sword Technologies

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

Sword Technologies is looking for a Java Full Stack Developer to join the team in Brussels. The position centers on building and maintaining applications that span both front-end and back-end layers. Teamwork and communication play a key role from the initial design phase through to delivery. Responsibilities Develop and support applications using Java and related technologies Contribute to both server-side and client-side development tasks Work closely with other developers and team members to deliver dependable software Location This role is based in Brussels, Belgium.

Apr 24, 2026

Apply

Full Stack Developer at netcompany1 | Brussels

Netcompany

Full-time|On-site|Brussels

Join the dynamic team at netcompany1 as a Full Stack Developer and play a pivotal role in shaping innovative digital solutions.As a Full Stack Developer, you will:Architect and develop engaging website structures, user interfaces, and responsive web applications.Craft back-end applications while implementing essential business logic.Set up and manage servers, databases, and APIs to guarantee seamless operations.Engineer scalable software solutions and optimize them for cross-platform performance.Establish robust security protocols and data protection strategies.Produce clean, efficient code while adhering to organizational coding standards and integrity.Conduct testing, debugging, and data analysis to identify and resolve issues effectively.Lead projects when necessary, produce technical documentation, and ensure alignment with technical and user requirements.

Feb 5, 2026

Apply

Full-Stack Developer (Java, Angular) - Brussels

European Dynamics

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

Apply

Java Full Stack Developer at Arηs Group | Brussels

Arηs Group, Part of Accenture

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

Apply

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

Apply

Channel Development Manager - Belgium

Rubrik

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

Apply

.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

Apply

Full Stack Developer (Java & React) Opportunity

Arηs Group, Part of Accenture

Full-time|Hybrid|Brussels

Join Arηs Group, a member of Accenture, as an experienced Full Stack Developer specializing in React. You will be instrumental in crafting high-quality solutions tailored to meet business needs.Key ResponsibilitiesDesign, develop, and maintain resilient applications primarily using Java.Leverage Spring Boot and JPA for backend architecture and data persistence.Create and integrate RESTful APIs for scalable solutions.Manage data efficiently and write complex queries using Oracle SQL.Develop clean, responsive user interfaces utilizing React (preferred) or Angular.Collaborate with DevOps/Cloud teams to deploy and oversee applications on AWS infrastructure.Utilize Python for automation, scripting, or data tasks when necessary.Adhere to best practices for code quality, security, and performance.Engage actively in code reviews, sprint planning, and team discussions.

Oct 13, 2025

Apply

Full Stack Developer with Bilingual Proficiency

European Dynamics

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

We are actively seeking a talented Full Stack Developer proficient in both French and English to join our esteemed team in Brussels, Belgium. This role entails working either at our company headquarters or on-site at client locations. The selected candidate will become an integral part of our Development team, collaborating closely with the IT team of a prominent client.Key ResponsibilitiesDevelop the architecture for front-end website applications.Design engaging user interactions on web platforms.Create and manage servers and databases to enhance functionality.Build responsive web applications.Design and implement APIs.Analyze and troubleshoot data, processes, and code to identify and resolve issues, while also making recommendations for improvements.

Jul 14, 2025

Apply

Full Stack Developer for Digital Distributed Infrastructures

European Dynamics

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

We are excited to announce an opportunity for a Full Stack Developer specializing in digital distributed infrastructures. This role requires fluency in English and is located in the vibrant city of Brussels, Belgium. As a key member of our Development team, you will collaborate closely with a major client's IT team, either from our offices or on-site at the client’s location.Key Responsibilities:Architect and develop robust front-end and back-end applications;Design engaging user interfaces for web applications;Implement essential business logic;Develop servers and databases to enhance functionality;Ensure high standards of security and data protection;Optimize applications for cross-platform compatibility;Create responsive designs and develop APIs;Contribute to the design and creation of scalable software solutions;Write clean, maintainable code for both front-end and back-end systems.

Sep 19, 2025

Apply

Full Stack Developer (Angular, Java) - Exciting Opportunity

European Dynamics

Full-time|Hybrid|Brussels, Brussels, Belgium

European Dynamics is hiring a Full Stack Developer with experience in Angular and Java for its Brussels location. The role requires fluency in English and involves working either at the company office or directly with client teams. Projects are collaborative and often take place alongside client IT departments. What you will do Develop and maintain both front-end architecture and back-end applications. Design user interactions that are intuitive and responsive. Implement business logic and uphold code quality standards. Create and optimize servers and databases to support application functionality across various platforms. Apply security measures and data protection protocols. Design and build APIs and scalable software solutions. Participate in all phases of the software development lifecycle. Test software and resolve bugs to enhance system performance. Location details This position is based in Brussels, Belgium. Work may take place at the European Dynamics office or on-site with clients, depending on project needs.

Apr 23, 2026

Apply

Full Stack Developer - Join Our Innovative Team

uni-systems

Full-time|Remote|Remote — Brussels, Brussels, Belgium

Are you a passionate Full Stack Developer looking to take your career to the next level? At uni-systems, we are seeking a talented individual to join our dynamic team remotely from Brussels. You will work on exciting projects, developing innovative solutions that impact our customers positively.

Mar 20, 2026

Apply

Full Stack Developer - Technical Team Lead

Arηs Group

Full-time|On-site|Brussels

Join Arηs Group, a proud member of Accenture, as we seek a skilled Full Stack Technical Team Lead to enhance our dynamic development team. In this role, you will spearhead the creation of advanced in-house solutions while ensuring top-notch technical quality. You'll have the opportunity to mentor team members and champion best practices throughout the development stack.Key ResponsibilitiesServe as a senior full-stack developer and the primary technical advisor for the team.Mentor junior and mid-level developers, conducting thorough code reviews.Architect, develop, and maintain applications utilizing Java, Angular, SQL, and additional technologies such as ng-grid, AWS, and Python.Evaluate user requirements and convert them into effective technical solutions.Oversee development tasks, delegate responsibilities, and assist the Delivery Manager with project planning.Tackle complex technical challenges and guide the team through obstacles.Guarantee software quality, maintainability, performance, and security standards.Monitor system modifications, updates, and lifecycle management.Perform security assessments and identify enhancement opportunities.Maintain regular communication with internal stakeholders regarding project expectations and progress.

Jan 23, 2026

Apply

Junior Enterprise Architect | Brussels, Belgium

Trasys International

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

Apply

Frontend Developer at AppTweak | Brussels, Belgium

AppTweak

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

Apply

Senior Business Development Representative - Belgium

Yenlo

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

Apply

Senior Full Stack Technical Staff Member

Axon Enterprise, Inc.

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

Join a dynamic team at Axon, where you will play a crucial role as a Senior Full Stack Technical Staff Member. Your expertise will help us build cutting-edge solutions that enhance public safety and drive innovation in technology. Work collaboratively with a talented group of engineers and contribute to impactful projects that make a difference.

Apr 29, 2026

Apply

Junior Java Developer - Near-Site in Brussels, Belgium

Trasys International

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

Create account — see all 779 results

Browse all companies, explore by city & role, or SEO search pages. View directory listings: all jobs, search results, or location & role pages.