Aziz Mezzi

Context: HealthTech startup; early hire; PTHD (RWE) & EDA (Data API) backbone. Achievements:

• - TypeScript Migration: consolidation of a fragmented codebase and JS → TS conversion (backend). - PTHD (RWE Web & Mobile): SoE/ Scheduling (visits → milestones → tasks; draft/submitted/locked statuses; refresh CRON).

Stack: React, React Native, TypeScript, Vite, React Query, Formik/Zod, Node.js/Express, MongoDB/DocumentDB, RabbitMQ, Keycloak, Jest/Vitest/Cypress, PM2, CircleCI, Swagger/OpenAPI, Winston, Sentry, @mikro-orm/mongodb, Docker.

• - Development of the React Web application (analysis screens, data-viz, navigation, performance).

• - Quality: Jest (unit) & Cypress (E2E) testing strategy integrated in CI; ESLint/Prettier/SonarQube.

• - Product: business analysis, functional specifications, mockups (UX/UI).

• - Back-end: contributions to Python/Django APIs (data exposure & aggregation). Stack: React, TypeScript, Jest, Cypress, Python/Django,

• - Development of the React Web application (user journey, data-viz, wallet integration).

• - Smart contracts: design, implementation, and deployment (Solidity, testnets).

• - Product scoping: business workshops, usage scenarios, coverage rules. Stack: React, TypeScript, Solidity, Node.js, Jest, ESLint, Jira.

Context & Role

- Participation in product scoping (client needs, specifications, acceptance criteria).

- Web & Mobile Design & Development (React / React Native / Node.js).

- Quality & Delivery: code reviews, tests (Jest), ESLint/SonarQube, Jira.

Projects

- PAYLIS — Blockchain Wallet (Web & Mobile)

- Smart contracts: design, implementation, and deployment (Solidity/Hyperledger Besu).

Node.js APIs (balance/transaction management), React/React Native apps.

Stack: React, React Native, Node.js, MongoDB, Solidity, Hyperledger Besu, Jest, ESLint, Jira, Git.

Nooba — Events Platform (Web & Mobile)

- Node.js APIs (events, attendees, tickets).

- React Native App (creation flow, notifications) + smart contracts (traceability/tickets).

Stack: React Native, Node.js, MongoDB, Solidity, Hyperledger Besu, Truffle, Jest, SonarQube, Jira, Git/GitLab.

IDress — Digital Wardrobe (“one-click”)

- Node.js Services/APIs + React Native App.

- Web scraping and Google Vision (object/text detection).

Stack: React, React Native, Node.js, MongoDB, Google Vision, Redux, Jest, ESLint, Postman, Jira, Git, SonarQube.