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 100 members experienced in 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 the global internet user. Interested in technology and want to build the next world-class products together? Join us.


Ruby Developer.


  • Work closely with Business Analyst and Front-end/Mobile engineers in order to develop highly responsible and scalable back-end 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 and optimisation to maximise system performance.
  • Involved in the RnD team, lead the team to catch up on new technology.

Basic Skills:

  • Strong foundation of Maths, Data Structures, Algorithms, and OOP programing.
  • At least 2 year experience developing RESTful API and other back-end applications using Ruby/Ruby on Rails.
  • Strong knowledge and experience with SQL Database such as MySQL, PostgreSQL
  • Experienced in using Git and Github. 
  • Basic understanding or experienced with Docker, CI/CD (CircleCI, Github Action, Jenkins)
  • Ability to research and understand technical documentation in English
  • Possesses good English for everyday and technical communication.
  • Good problem-solving and analytical skills.
  • Good learning attitude, professionalism and high sense of responsibility.

Advanced Skills:

  • Experienced or certified in using AWS services or other cloud infrastructure
  • Be aware of software development principles such as SOLID, DRY.
  • Be aware of design patterns such as Singleton, Decorator.
  • Experienced in microservices is a plus.
  • Decision-making ability and leadership skills.
  • Time management and organization skills.

Our Key Benefits and Cares:

  • 13th-month pay (yearly bonus).
  • Bonus on National Public Days
  • Annual leave: 12 days of Annual leave and 11 days of National public holiday 
  • PTI Health Insurance
  • Salary review: 2 times a year 
  • Promotion opportunity
  • Yearly company trip, Year-end party
  • 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.


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