Karlo Šeler

• Owned and delivered key Ember.js features that enhanced product capabilities and user experience. • Partnered with product stakeholders to implement features central to a new upselling strategy supporting business growth initiatives. • Served on the platform team, modernizing legacy Ember codebases and resolving technical debt to enable adoption of Ember Embroider. • Developed foundational UI components for a new design system, establishing reusable patterns used across multiple teams. • Took ownership of high-priority user and stakeholder escalations, rapidly shipping time-sensitive features while maintaining code quality and platform stability.

• Worked cross-functionally within a BAU team on the Primark project, helping deliver the end-to-end Click & Collect customer experience. • Contributed code and improvements to the Oracle Cerner Terra UI open-source web framework. • Identified and fixed defects in legacy systems to unblock feature development and improve system reliability. • Supported and executed production deployments, ensuring new functionality went live safely and without service interruptions. • Maintained and expanded technical and user documentation, improving clarity around new workflows and processes.

• Led development of internal React-based UI libraries, including reusable form and data grid components adopted across multiple Salesforce-based applications. • Improved code reuse and maintainability by standardizing shared UI patterns, reducing duplicated frontend logic across products. • Established testing standards and documentation for internal UI libraries, improving reliability and easing long-term maintenance. • Collaborated on the design and development of an internal documentation application supporting the team’s UI design system. • Conducted onboarding, mentoring, and code reviews, supporting junior engineers and promoting platform best practices