aleksandern08

Senior React Native Engineer

Senior mobile and full-stack engineer with 7+ years building production iOS and Android apps using React Native, and 15+ years in software development.

I’ve led development of mobile and backend systems involving real-time data, payment flows, and complex state across clients and APIs. My work typically focuses on system reliability — handling edge cases, synchronization issues, and production constraints.

I’m comfortable working across the full stack, from mobile architecture and native integrations to backend services (Node.js, NestJS) and infrastructure.

Interested in roles involving mobile systems, fintech, wallets, or real-time applications where correctness and reliability matter.

Experience: 8 years

Yearly salary: $10,000

Hourly rate: $50

Nationality: 🇹🇼 Taiwan

Experience

Full-Stack Developer

CTSS

2021 - 2024

Developed mobile and web applications using React Native, Next.js, and TypeScript. Built backend services and integrations with external APIs. Managed cloud infrastructure (AWS) and deployment processes. Worked with real-time data flows and third-party services (messaging, telephony).

CTO & Mobile Dev

Sportavido

2020 - 2023

Led mobile development and defined overall technical strategy. Built and scaled the mobile platform from early stages to production. Aligned engineering decisions with business goals and long-term product direction. Owned technical direction and system architecture decisions across the platform.

Senior Mobile & Full-Stack Engineer

Upwork

2014 - 2026

Led end-to-end development of mobile and web applications for international clients. Designed scalable mobile architectures using React Native and TypeScript. Built backend systems and APIs using Node.js, NestJS, and MongoDB. Collaborated directly with founders on architecture, product decisions, and scaling strategy. Delivered long-term production systems with ongoing support and evolution.

Skills

react

react-native

typescript

english

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