Gianluca Grassi
Product Designer & App Developer · AI Evaluation
Product designer who also writes the code. I design mobile and web apps, from UX flows to final UI, and build web products with React, Next.js and Claude Code. Hands-on experience evaluating AI model outputs across text, code, images and voice. Native Italian speaker, fluent in English.
Native Italian speakerFluent EnglishMobile & web app designDesign + code, end to endMultimodal AI evaluation: text, image, code, voice
Experience
Product & App Designer
2023 to presentFreelance
- ›Design brand identities, landing pages and dashboards, from first sketch to final Figma file
- ›Design mobile apps for iOS and Android: user flows, wireframes, high-fidelity screens
- ›Turn designs into working web apps with React, Next.js and Claude Code, all the way to deploy
AI Content Evaluator & Annotator
2024 to 2026Freelance
- ›Rated AI-generated responses against structured rubrics across text, images, and code
- ›Caught hallucinations, inconsistencies, and reasoning errors under deadline
- ›Adapted evaluation criteria across multimodal task types, hundreds of responses in
AI Voice & Speech Evaluator
2024 to 2026Freelance
- ›Compared pairs of AI-generated voice outputs on pronunciation, prompt adherence, and naturalness
- ›Flagged audio artifacts and glitches through structured side-by-side review
- ›Delivered consistent, well-reasoned judgments across high volumes of audio pairs
Selected projects
grassigianluca.comPersonal site, designed, coded and deployed solo. Next.js, Tailwind CSS, Netlify, password-protected app section.
NuvaCompanion app for a fitness band, iOS & Android. Pairing flow and daily dashboard, full UI in Figma.
ChatGPT chat history redesignUX teardown and redesign of the sidebar: search, pins and grouping for old conversations.
Skills
App & Product DesignMobile UI (iOS, Android) · UX Flows · Wireframing · Prototyping · Design Systems · Figma · Framer
AI Evaluation & RLHFData Annotation · Prompt Evaluation · Multimodal Evaluation · Rubric Design · Calibration · A/B Comparison · TTS / Audio QA
AI ToolsClaude Code (Expert) · Claude · ChatGPT · Midjourney · v0 · Cursor
DevelopmentReact · Next.js · TypeScript · Tailwind CSS · Responsive / Mobile-first · Node.js · Git · Netlify
Certifications
Anthropic Academy · Claude Code in Action, Claude API, MCP Advanced (19 courses)2026
Google UX Design Professional Certificate · Google (Coursera)2025
Education
Diploma, Web Design · Istituto Rizzoli, Milan2015
Languages
Italian (native), English (fluent)