Role Description We are seeking a senior frontend-focused software engineer to support scalable, dynamic email template systems. This role is best suited for a strong frontend engineer with modern React, TypeScript, and JavaScript experience who can also work deeply with reusable email components, Apache Velocity/VTL-style templates, responsive HTML/CSS, APIs, localization, and personalization at scale. This is not an email developer-first role. The ideal candidate has a strong software engineering foundation, frontend engineering depth, and the ability to build scalable, component-based solutions for dynamic, personalized email experiences. Enterprise experience strongly preferred. Key Responsibilities - Build and maintain scalable frontend and email template components using modern web development practices. - Develop dynamic email templates using Apache Velocity/VTL-style macros such as #set, #if, #foreach, and #define. - Compose reusable Velocity components and macros into full email templates. - Translate Figma designs into modular, maintainable code. - Work with shared design systems and reusable components instead of one-off hand-authored HTML. - Determine when to extend an existing component versus building a new one. - Integrate user interfaces and email templates with backend platforms and API-driven data sources. - Connect to, query, consume, and format internal or external API data for conditional, logic-driven dynamic emails. - Build templates for scale, including 100+ locales, localized copy, dynamic data, per-recipient personalization, and array-based looping. - Hand-code responsive, accessible HTML/CSS optimized for email client rendering limitations across Outlook, Gmail, and Apple Mail. - Work fluently with Git, GitLab or GitHub, the command line, and modern IDE-based development workflows. - Collaborate in environments using CI/CD pipelines, Infrastructure-as-Code tooling, and AWS primitives. Qualifications - Senior-level frontend or software engineering execution. - Bachelor’s degree in Computer Science, Engineering, or a related field with at least 5 years of related experience, or Master’s degree with at least 3 years of related experience. - Current or most recent role should likely be Software Engineer or Frontend Engineer with a frontend focus. - Strong frontend development experience using React, TypeScript, and JavaScript. - Experience integrating frontend interfaces with backend platforms or services. - Strong command of Apache Velocity, VTL, or Velocity-style macro templating. - Hands-on experience with macros such as #set, #if, #foreach, and #define. - Experience composing components or macros into full email templates. - Experience working with scalable design systems and shared reusable components. - Ability to build for personalization, localization, and dynamic data at scale. - Proven experience consuming API data and using it in conditional, logic-driven templates or user experiences. - Advanced responsive HTML/CSS coding experience for email clients. - Experience building accessible email or frontend experiences. - Familiarity with rendering limitations across Outlook, Gmail, and Apple Mail. - Strong Git, command line, and IDE workflow skills. - Experience translating Figma designs into modular code. - Working knowledge of AWS primitives such as compute, storage, networking, and IAM. - Exposure to Infrastructure-as-Code tooling such as Terraform. - Experience with CI/CD pipelines such as GitLab CI. Nice-to-Have Skills - Practical experience using AI-assisted development tools such as Cursor, Windsurf, Claude, Claude Code, or AI-driven code fixes. - Prior exposure to component internationalization or localization frameworks. - Prior experience with email-specific frontend systems or dynamic email platforms. Required Tools & Platforms - React - TypeScript - JavaScript - Apache Velocity, VTL, or Velocity-style macros - HTML - CSS - Figma - Git - GitLab or GitHub - Command line - Modern IDE workflows - AWS primitives including compute, storage, networking, and IAM - Terraform or comparable Infrastructure-as-Code tooling - GitLab CI or comparable CI/CD tooling - Outlook, Gmail, and Apple Mail email rendering environments Location, Time & Engagement - Remote contract role. - LATAM-based candidates only. - 100% allocation. - Expected 40 hours per week. - Contract currently expected to run through March 31, 2027. - Candidates should be able to collaborate effectively with U.S.-based teams and stakeholders.

• Develop responsive web applications with a strong emphasis on front-end UI development. • Build and maintain user interfaces using AngularJS/Angular, JavaScript, TypeScript, HTML, and CSS. • Integrate front-end applications with REST APIs and backend services. • Work with relational and/or NoSQL databases to retrieve and display application data. • Collaborate with UX designers to translate wireframes and prototypes into production-ready applications. • Participate in Agile development processes, code reviews, testing, and continuous improvement initiatives. • Leverage AI-powered development tools and modern engineering practices to improve productivity and software quality.

Role Description This position is filled in the IoT Digital team of Deutsche Telekom IT Solutions Hungary. The team consists of IT professionals working on IoT and data intelligence solution implementation projects. Your future project will be in the mobility industry. Together with our partners, we are developing intelligent electronic tolling solutions for our international customers. We use digital intelligence for a smart service that connects Europe. Using sophisticated technology and our toll box, we are creating a new age of seamless mobility. Our aim is to further develop the currently available services and extend it to further domains. Together with the T-Systems International team members, you will join an international team supporting our customers by providing tolling solutions. As a frontend developer, you will: - Work within a Scrum team focused on mainly maintenance and developing high-quality web applications with automated integrated pipelines. - Dig deep into complex challenges and enjoy exploring and implementing innovative solutions. - Contribute to and own the operational responsibilities for the services you develop, embodying a strong DevOps culture. - Feel comfortable working in a self-organized, agile, and international environment and are eager to grow both professionally and personally. Qualifications - Bachelor or Master’s degree in Computer Science, Engineering, Information Technology, or equivalent work experience in IT. - 3+ years of experience in Web & App development in Java with a strong understanding of UI/UX principles. - Proficiency in API technologies such as REST, SOAP, JSON and familiarity with frameworks such as Apache Wicket, Bootstrap. - Hands-on experience with modern CI/CD pipelines using Git and containerization/orchestration tools like Kubernetes. - Solid grasp of software quality standards and professional development methodologies, including Clean Code practices and Test-Driven Development (TDD). - Strong familiarity with agile methodologies (e.g., Kanban, Scrum, SAFe). - Excellent communication skills in English. - Team player. Requirements - German language knowledge (advantage). Benefits - Remote working possibility is only available within Hungary due to European taxation regulation.

• UX Research & Frameworks: Conduct user research within learner and educator demographics. Create personas, map user journeys, and work with user stories to optimise digital learning workflows. • Human-AI Interaction Design: Shape the UX for cutting-edge features like AI tutor chat interfaces, smart nudges, and teacher copilots. • Wireframing & Prototyping: Build low-fidelity wireframes and high-fidelity mockups in Figma, Sketch, or Adobe XD, and develop interactive prototypes using HTML, CSS, and JavaScript. • Data Visualisation: Design engaging dashboards and visualisations based on educational data, predictive learning analytics, and student retention models. • LMS Customisation: Create custom graphics, assets, and themes to enhance wireframes and virtual learning environments.