Letizia Sorrentino

Frontend Engineer

I build cross-platform experiences for web and mobile, with a growing focus on applied AI.

About

I'm a frontend engineer specialising in React Native, React, and TypeScript. My current engagement is Mellow Kids, a baby tracking app in beta with real users, where I build core features in React Native. Earlier this year I worked at Studio Mesh on the Prodigies platform, picking up Next.js and GraphQL on the job and shipping pages to live production. My focus is reusable component architecture, design systems, and reliable cross-platform behaviour.

Alongside my mobile work, I'm building StoryKind — a React Native app with streaming Claude integration — and have completed two GenAI bootcamps (Cajigo, ExamPro). I'm exploring LLM APIs and prompt pipelines, learning how to bring AI features into digital products. Combining mobile production experience with applied AI is where I'm taking my work next.

Before engineering I ran my own e-commerce business — that's where I first learned to think about software in terms of the people using it. That perspective still shapes how I approach features today: clear user flows, solid UX, and interfaces that hold up across platforms.

Experience

AUG 2024 — PRESENT

Frontend Engineer · Mellow Kids

Baby sleep and development app for parents of children aged 0–2. Built the newborn tracking feature, contributing to beta readiness and early user testing. Fixed bugs across onboarding, payment flows, and in-app notifications, improving cross-platform stability on iOS and Android. Built reusable UI components and shared screen patterns in TypeScript, reducing development overhead for new features.

React NativeTypeScriptRedux ToolkitExpoEAS Build

MAR 2025 — JUN 2025

Frontend Engineer · Studio Mesh

Built and shipped production features for the Prodigies platform during a 4-month contract. Implemented password recovery functionality connecting the Next.js frontend to a Directus backend with form validation and error handling. Built multiple pages following atomic design principles, writing GraphQL queries to fetch dynamic content from a headless CMS.

Next.jsTypeScriptTailwindGraphQLDirectus CMS

NOV 2023 — JUN 2024

Frontend Engineer · The Jump Digital School

Built reusable React components and interactive quizzes used across the learning platform. Authored UI documentation and CSS/Material UI guidelines to support developer onboarding and consistency. Improved responsiveness and interface consistency across devices.

ReactMaterial UICSSTechnical Writing

2018 — 2022

Founder · Bamboo & Green

Built and maintained consumer-facing websites using Shopify and WordPress, including a sustainability-focused content platform. Increased organic traffic by approximately 50% through content strategy and SEO optimisation. Managed end-to-end e-commerce operations from product sourcing to marketing.

ShopifyWordPressSEOE-commerce

Projects

VisionAriser

Personal growth and journaling app for iOS, Android, and web. Developed core mobile user flows including onboarding, assessments, vision boarding, affirmations, and journaling. Integrated Firebase Authentication and Firestore to support secure sign-up, user state, and persistent data across platforms. Collaborated with the founder to translate product vision into screen designs in Figma.

React NativeTypeScriptRedux ToolkitFirebaseEAS Build

StoryKind

AI-powered React Native app that generates personalised preparation stories for children facing new or stressful situations — a first dentist visit, a new sibling, the start of school. Sole developer — designed the architecture, built the conversation UI, and integrated LLM APIs for age-appropriate story generation.

React NativeTypeScriptAnthropic Claude API

Love Food Recipe App

Full-stack recipe app where users can search the Spoonacular database, filter by diet and meal type, view recipe cards with ingredients and instructions, save favourites, and create accounts. Built both frontend and backend.

ReactRedux ToolkitNode.jsExpress.jsSQL