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Product-focused full-stack engineer with 2 years of experience shipping responsive web, mobile, and backend applications. Built most of Tribr from scratch, owning features end-to-end across UI, data modelling, authentication, integrations, testing, deployment, and production support. Skilled in React/Next.js, React Native, TypeScript, Node.js/NestJS, REST APIs, OAuth/JWT, and relational + geospatial data. Strong collaborator in distributed startup teams, focused on reliability, security, and measurable test coverage.…Product-focused full-stack engineer with 2 years of experience shipping responsive web, mobile, and backend applications. Built most of Tribr from scratch, owning features end-to-end across UI, data modelling, authentication, integrations, testing, deployment, and production support. Skilled in React/Next.js, React Native, TypeScript, Node.js/NestJS, REST APIs, OAuth/JWT, and relational + geospatial data. Strong collaborator in distributed startup teams, focused on reliability, security, and measurable test coverage.

Xiaofeng Tang (Timmy)

Full Stack Developer, Software Engineer, Back-End Developer, +2

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Product-focused full-stack engineer with 2 years of experience shipping responsive web, mobile, and backend applications. Built most of Tribr from scratch, owning features end-to-end across UI, data modelling, authentication, integrations, testing, deployment, and production support. Skilled in React/Next.js, React Native, TypeScript, Node.js/NestJS, REST APIs, OAuth/JWT, and relational + geospatial data. Strong collaborator in distributed startup teams, focused on reliability, security, and measurable test coverage.…Product-focused full-stack engineer with 2 years of experience shipping responsive web, mobile, and backend applications. Built most of Tribr from scratch, owning features end-to-end across UI, data modelling, authentication, integrations, testing, deployment, and production support. Skilled in React/Next.js, React Native, TypeScript, Node.js/NestJS, REST APIs, OAuth/JWT, and relational + geospatial data. Strong collaborator in distributed startup teams, focused on reliability, security, and measurable test coverage.

Available to hire

Product-focused full-stack engineer with 2 years of experience shipping responsive web, mobile, and backend applications. Built most of Tribr from scratch, owning features end-to-end across UI, data modelling, authentication, integrations, testing, deployment, and production support.

Skilled in React/Next.js, React Native, TypeScript, Node.js/NestJS, REST APIs, OAuth/JWT, and relational + geospatial data. Strong collaborator in distributed startup teams, focused on reliability, security, and measurable test coverage.

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Work Experience

Full-Stack Software Engineer / Founding Engineer at CooeeHQ (Tribr)

October 1, 2025 - Present

Took end-to-end ownership of building most of Tribr from scratch using React Native, TypeScript, NestJS, Prisma and PostgreSQL/PostGIS, initially on Supabase before migrating the platform to GCP. Designed and shipped REST APIs and relational/geospatial data models for onboarding, profiles, discovery, activities, privacy controls and messaging, iterating product behaviour from stakeholder feedback. Strengthened authentication and secure data handling with Firebase phone OTP, Google/Apple account linking, verified-email ownership, collision handling and six granular privacy controls. Delivered private and group messaging with optimistic sending, retry handling, read states, image storage and FCM deep links; used serializable transactions to prevent duplicate conversations and update races. Integrated Airalo, Apple IAP, Jumio and iProov SDKs/APIs across frontend and backend services to deliver eSIM purchase, fulfilment and eKYC workflows. Established GitHub Actions, EAS builds, OTA update

Full-Stack Developer at CareGP

June 1, 2025 - June 30, 2025

Independently designed and shipped a production NestJS/TypeScript email-to-PDF application integrating Gmail and Microsoft Graph REST APIs. Implemented multi-user OAuth 2.0, automatic token refresh and session-based access control for secure third-party connections. Built real-time webhook subscription processing with retry logic, structured logging and resilient error handling, delivering more than 90% workflow automation.

Full-Stack Developer at Cyberoo.ai

March 1, 2025 - August 31, 2025

Delivered 50+ frontend and backend features and fixes using React, TypeScript, Spring Boot, Redis and AWS for production cybersecurity products in a distributed remote team. Built responsive React and Ant Design interfaces plus backend APIs for multilingual conversation and administration workflows, content moderation and AWS S3-hosted media. Developed a reusable Axios utility with dynamic headers, AbortSignal cancellation and consistent error notifications to improve reliability across API-driven user flows. Refactored database access and implemented parallel processing to remove redundant calculations and improve throughput; used AWS RDS, S3 and CloudWatch to troubleshoot deployed services.

Full-Stack Developer Intern at RECAM

September 1, 2024 - March 31, 2025

Designed maintainable REST APIs with ASP.NET Core, Entity Framework, MySQL and MongoDB using layered Controller-Service-Repository architecture. Developed 10+ reusable, responsive React/TypeScript components from supplied UI/UX designs for consistent desktop and mobile experiences. Created 20+ frontend and backend tests using Jest, React Testing Library and xUnit, and documented API and component usage for team onboarding.