Jeff Sittler is a seasoned UX architect and owner with over two decades of development experience and 13 years specifically focused on UX and front-end engineering. He blends practical full-stack skills—evident from recent full-stack work at GPS Insight—with deep UX craftsmanship developed across roles at Unicon and Matson Navigation. An active open-source contributor, Jeff has improved widely used projects like Apereo CAS and uPortal, implementing SSO session management, responsive Bootstrap-based themes, and modernized UI elements. Based in Gilbert, Arizona, he runs Mindblender Productions, bringing an entrepreneurial, client-facing perspective to technical design problems. Known for translating complex requirements into polished, accessible interfaces, he continually adopts new technologies to extend the UX ecosystem. Colleagues describe him as detail-oriented with a knack for turning legacy interfaces into cleaner, mobile-friendly experiences.
Apereo CAS - Identity & Single Sign On for all earthlings and beyond.
Role in this project:
Back-end Developer
Contributions:388 commits, 55 PRs, 68 pushes in 3 years 5 months
Contributions summary:Jeff's commits primarily focus on the implementation of the web application's user interface, specifically the monitoring and management of Single Sign-On (SSO) sessions. The user implemented the necessary JavaScript and JSP code to create a data table, incorporating AJAX data loading and session deletion functionality. The user also made styling changes to ensure the proper layout and presentation of the application for the user.
Enterprise open source portal built by and for the higher education community.
Role in this project:
Front-end Developer
Contributions:25 commits in 7 months
Contributions summary:Jeff primarily focused on enhancing the user interface and styling of the uPortal project. Their contributions include implementing Bootstrap 3 within the Respondr theme, which involved significant changes to the LESS stylesheets and JSP files. They also addressed mobile view inconsistencies and refined the design by styling the gallery/customization drawer and the remove/move tab controls. Furthermore, they modernized the interface by incorporating Font Awesome icons and modifying the header elements.
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