OutSystems Front-End Developer, Senior

Adree is seeking a creative and detail-oriented OutSystems Front-End Developer, Senior to elevate the user experience and visual interface of our digital products. This role focuses heavily on the look, feel, and responsiveness of OutSystems applications. You will be responsible for translating UI/UX wireframes and mockups into high-fidelity, reusable OutSystems themes, blocks, and templates. Operating at the intersection of design and low-code engineering, you will ensure seamless web and mobile user interfaces that are pixel-perfect, highly performant, and compliant with accessibility standards.Key ResponsibilitiesUI/UX Implementation: Translate Figma or Adobe XD wireframes/mockups into fully functional, high-performance OutSystems Reactive Web and Mobile interfacesTheme & Style Guide Creation: Design and maintain robust OutSystems custom themes, CSS style guides, and reusable UI components (Web Blocks) to enforce design consistency across multiple appsAdvanced Styling: Use Advanced CSS, HTML5, and JavaScript to extend the OutSystems UI framework, creating custom layouts and interactive components when native widgets are insufficientCross-Browser & Device Optimization: Ensure all developed interfaces are fully responsive, pixel-perfect, and optimized for cross-browser and multi-device performancePerformance Tuning (Front-End): Optimize front-end rendering, DOM manipulation, asset loading, and client-side logic to ensure rapid application load timesCollaboration: Work side-by-side with UI/UX Designers to validate feasibility, and with Back-End/OutSystems Developers to bind UI components to data actions and APIsAccessibility & Standards: Apply web accessibility guidelines (WCAG) and UI design patterns strictly across all developed screensRequirementsEducationBachelor's degree in Computer Science, Information Technology, UI/UX Design, or a related fieldExperience4+ years of experience in Front-End Web Development, with a minimum of 2-3 years specializing inside the OutSystems platform focusing on UI capabilitiesSkills & Competencies (Technical & Analytical + Soft)OutSystems UI Framework: Mastery of OutSystems UI widgets, customization of patterns, and client-side logic/actionsCore Web Technologies: Expert knowledge of HTML5, CSS3, Advanced CSS (SASS/LESS), and Vanilla JavaScript / Modern JS frameworksDesign System Literacy: Comfort working directly from design tools like Figma, Zeplin, or LucidchartResponsive Layouts: In-depth knowledge of Flexbox, Grid systems, and mobile-first responsive design paradigmsAttention to Detail: An exceptional eye for typography, alignment, animations, micro-interactions, and visual hierarchyCollaboration: Strong communication skills to bridge the gap between design visions and technical low-code constraintsJob Location: HQ