Laboratory

Mobile Developer (React Native)

Ho Chi Minh City, Ho Chi Minh City   |   Full Time

One On One English is an ed-tech startup based in Vietnam looking to disrupt English language instruction in South East Asia. We provide online ESL courses to elementary to high school students by connecting learners with North American teachers in virtual classrooms designed to optimize learning. Our vision is to become the leading education platform for quality language instruction and enrichment in SEA.


The job: Along with the entire development team, you will be responsible for the creation of two possible applications: Mobile LMS, Mobile Virtual Classroom.

  • Develop new user-facing features
  • Build reusable code and libraries for future use
  • Ensure the technical feasibility of UI/UX designs
  • Optimize application for maximum speed and scalability
  • Assure that all user input is validated before submitting to back-end
  • Collaborate with other team members and stakeholders
  • Train and mentor junior staff as necessary
  • Provide tech solutions as necessary


Skills and experience we look for:

  • Strong CS fundamentals with a Bachelor's Degree in Computer Science (or similar technical field of study) or equivalent practical experience
  • 3 years of experience working in Mobile development
  • Having an agile mindset and not hesitate to learn more about new technologies
  • Good working knowledge of algorithms and data structures
  • Solid understanding of how mobile works
  • Ability to write well-documented, clean JavaScript code
  • Have written or contributed on complex react native module
  • Have solved complicated native library integration with iOS and Android
  • Persistence to give up anything to squeeze in that last bit-level performance 

BONUS if you have:

  • Previous experience with our tech stack is a huge plus. We use:
    • Programming languages: JavaScript, Objective-C/Swift, Java
  • Having prior experience with real-time communication technology (WebRTC, WebSocket,…)


Why You'll Love Working Here

  • Competitive salary depending on skills and capabilities;
  • Comfortable working conditions and flexible working time;
  • Friendly and funny colleagues (and free snacks!);
  • Opportunities for promotion, career development, and mentorship;
  • Dynamic, fast-paced, professional, fun, and exciting start-up work environment.

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