Cheng feng Tsai

Available to hire

I am Cheng Feng Tsai, a software developer based in Taipei, Taiwan, with over 8 years of hands-on experience in web and mobile full-stack development using TypeScript and Python.

About

I am Cheng Feng Tsai, a software developer based in Taipei, Taiwan, with over 8 years of hands-on experience in web and mobile full-stack development using TypeScript and Python. I have participated in and led projects using modern frameworks and cloud technologies, delivering high-quality, stable, and efficient software.

I enjoy building user-friendly interfaces and reliable system architectures that meet both user and business needs. I thrive in multicultural, cross-functional teams, value clear communication and technical excellence, and focus on long-term product growth.

  • 11 years' experience
  • Joined February 2026

Languages

  • EnglishAdvanced
  • ChineseFluent
  • JapaneseAdvanced

Industry experience

  • Software & Internet
  • Professional Services
  • Education

More experts in Taipei, Taiwan

Work experience· 4 roles

Senior Software Engineer · Eagle AppJun 2022 – Jul 2025 · 3 yrs 2 mos

Contributed to a CEX crypto trading platform using FastAPI and Nuxt.js. Integrated AI chatbot in both frontend and backend using OpenAI and Gemini APIs. Built mobile app with Flutter, achieving 5,000+ weekly downloads. Led development of ecommerce and insurance management platforms using Next.js and Nest.js with MySQL. Implemented Redis caching, server-side rendering, and GraphQL API with Apollo.

Senior Software Engineer · Juding Information Co., Ltd.Mar 2020 – Jun 2022 · 2 yrs 4 mos

Built real-estate platform using Express.js and Vue.js/Nuxt.js. Implemented automated key scanner and auto translation, used Rollup with Vite for optimized builds. Developed desktop admin dashboard using Electron. Collaborated with UI, Test, Product and Security teams to deliver on deadline.

Full Stack Engineer · Lockists Co., Ltd.Feb 2018 – Mar 2020 · 2 yrs 2 mos

Built attendance management system using Nest.js and Next.js, with PostgreSQL. Developed mobile app using Flutter. Implemented backend caching with Redis, optimized DB requests, and used Docker for cross-platform development. Built custom React Hooks and used Redux for global state and Context API for component state.

Freelance Software Engineer · Self EmployedJul 2015 – Present · 11 yrs 5 mos

Education

Bachelor's Degree · I-Shou University2013 – 2017

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