• Functional oversight of an external service provider for the ongoing development of LOTTO Niedersachsen's website and apps in an agile context • Responsibility for the frontend and design backlog, including prioritization and maintenance of tickets, as well as planning and coordinating regular releases • Close collaboration with the design team in developing and refining UX/UI concepts, wireframes and designs • Planning and implementation of new features and projects in the digital web/app domain, ensuring usability, performance, quality, SEO and accessibility • Ensuring the best possible user experience for the digital implementation of the existing and future product portfolio • Close cooperation with internal stakeholders to design new features and projects and reporting project progress • Monitoring various KPIs and regularly reporting progress and improvements of the web presence

• Design and implement website architecture and scalable software solutions. • Develop user interactions on web pages, with a focus on usability and responsive design. • Design and develop APIs (REST and SOAP) and backend business logic. • Build and maintain servers, databases, and components for enterprise applications. • Conduct data analysis, data modeling, and ensure implementation of security and data protection standards. • Participate in technical design and architecture decisions. • Maintain code integrity, implement automation, and troubleshoot issues. • Prepare technical documentation and communicate with both technical and non-technical stakeholders.

Role Description At Uni Systems, we are working towards turning digital visions into reality. We are continuously growing and we are looking for a professional Front-end Developer to join our UniQue Brussels team. - Design and implement website architecture and scalable software solutions. - Develop user interactions on web pages, with a focus on usability and responsive design. - Design and develop APIs (REST and SOAP) and backend business logic. - Build and maintain servers, databases, and components for enterprise applications. - Conduct data analysis, data modeling, and ensure implementation of security and data protection standards. - Participate in technical design and architecture decisions. - Maintain code integrity, implement automation, and troubleshoot issues. - Prepare technical documentation and communicate with both technical and non-technical stakeholders. Qualifications - Master’s degree + 13 years of relevant experience - Strong expertise in Java, Spring Boot, EJB/Spring, and JPA/Hibernate. - Front-end development experience with AngularJS (v1), Angular 11/17, HTML, CSS, JavaScript. - API design and documentation experience (REST and SOAP). - Experience with relational databases (Oracle, MySQL, MS SQL) and data modeling. - Knowledge of CI/CD pipelines, Git/SVN, and automated testing. - Excellent communication skills in English (C2 level) Requirements - Desirable: Experience with cloud platforms (AWS, Azure), Kubernetes, Docker, Terraform. - DevOps-oriented mindset, microservices migrations, and AI-powered observability solutions. Company Description At Uni Systems, we are providing equal employment opportunities and banning any form of discrimination on grounds of gender, religion, race, color, nationality, disability, social class, political beliefs, age, marital status, sexual orientation or any other characteristics. Take a look at our Diversity, Equality & Inclusion Policy for more information.

• Develop, maintain, and optimize reusable frontend components using React and Next.js (App Router). • Implement responsive and interactive UIs in collaboration with product designers and backend teams. • Use TailwindCSS, CSS, and styling libraries to build clean, scalable UI systems. • Architect frontend codebases following industry best practices, design patterns, and performance standards. • Work with micro frontends and micro repo/mono repo structures to build large-scale modular applications. • Build and maintain internal design systems and component libraries. • Utilize TypeScript to write readable, maintainable, and strongly typed code. • Optimize application performance, SEO, and overall user experience. • Work with state management libraries and TanStack Query for client/server state synchronization. • Maintain high code quality using linting tools, formatting standards, and Git workflows. • Participate in release processes and CI/CD pipelines for smooth deployments.