Ruby Developer




About us

SupremeTech is a Technology Company focusing on web service, video streaming, video distribution and AI technology-based in Da Nang, Viet Nam. We are a strong team of more than 150 members experienced in the Japanese software development market for more than 6 years. As the world is changing day by day, we also shift our target to building high-quality products that serve the quickly changing needs of global internet users. Interested in technology and want to build the next world-class products together? Join us.


  • Work closely with Business Analyst, Front-end, Mobile and Infrastructure engineers in order to develop highly responsible and scalable backend applications
  • Prepare API specifications for better communication with other team members
  • Ensure thorough Unit testing is done for all developed codes
  • Participate in code review, database design and optimization to maximize system performance


Basic Skills

  • At least 1-year experience developing backend applications using the RoR platform, especially RESTful API
  • Experienced with ERB template
  • Strong knowledge of object-oriented analysis and design
  • Strong knowledge and experience with relational databases such as PostgreSQL, MySQL
  • Experienced in using Git and GitHub
  • Experienced with Docker
  • Basic understanding of CI/CD (CircleCI, TravisCI, Github Actions or Jenkins)
  • Ability to research and understand technical documentation in English
  • Good learning attitude, professionalism and high sense of responsibility
  • Ability to quickly learn new backend (scripting) programming languages to adopt the needs of the project

Advanced Skills

  • Experienced or certified in using AWS services or other cloud infrastructure

Our Key Benefits and Cares

  • 13th-month pay (yearly bonus)
  • Bonus on National Public Days
  • Annual leave: 12 days 
  • PTI Health Insurance
  • Salary review: twice a year 
  • Promotion opportunity
  • Yearly company trip, Year-end party
  • Training Incentive Program, Team building Allowances
  • MacBook is provided

How to apply?

Please send your CV to with the title “Application for Ruby Developer” or you can contact us via phone number 02363.626.989 if you have any concerns. We look forward to working with you.