Jeremia Justin Grasio — UI/UX & Product Designer

Designed and engineered Handler, an AI gym and strength coach app, built for iOS and Android in React Native, using Cursor, Codex, and Claude Code to turn entire Figma design system & screens into production ready code.

Implemented and refined UI details for Parable App, a Bible guide app using Claude Code and Codex to close the gap between static designs and production. Conducted visual QA across interfaces, identifying and resolving layout inconsistencies, interaction issues, and pixel level discrepancies to ensure the shipped product accurately reflects the intended design.

MCP Workflow Integration, leveraged Figma MCP and Claude Code to migrate and integrate Figma Make prototypes into production ready code, convert PRDs into high fidelity prototypes, and sync generated code back into Figma canvas accelerating end to end product delivery across CMK’s digital products.

Atomic Design System, Helped organize and standardize the design systems based on TailwindCSS principles & Atomic Desgin practices for CMK jewellery brand such as Mondial, Frank & Co, and The Palace. Ensured consistent colors, typography, spacing, and components across each brand’s digital ecosystem, supporting a more efficient workflow for designers and developers.

Website UI/UX, improved the website design and user flows for CMK jewellery brands Mondial, Frank & co. (also written Frank and Co or Frank n Co), and The Palace Jeweler, refining usability and consistency across each brand’s digital experience.

Digital Management System, a dashboard to manage all digital content across CMK’s brands, included order management, marketing, SEO, and product management.

Gamify Ring Size Guidelines, interactive ring size guideline experience for Frank & co. exhibitions that enabled customers to scan a QR code, explore a guided sizing journey, and generate personalized resultswhile seamlessly capturing customer data for future engagement.

Valentine Quiz Campaign, an interactive Valentine campaign that combines a personality quiz with personalized jewelry recommendations, helping collect customer data for CRM while encouraging partner driven purchases through subtle gifting hints.

AI Prototype, leveraged Figma Make to create interactive prototypes that streamline design handoff to developers and stakeholders, improving clarity, collaboration, and implementation efficiency.

Design System, i helped build scalable and consistent design systems and component libraries in Figma, ensuring visual harmony and smooth collaboration across teams.

Web design, I redesigned and optimized the Dibimbing.id website using Auto Layout techniques to achieve a fully responsive and developer friendly design.

System development, I helped design user interfaces for Cakrawala University’s internal systems, including SMPB, SIAKAD, and Billing. The project achieved 94.12% user satisfaction, measured using SEQ and SUS usability testing methods.