Backend Engineer

Seoul (On-site) • Full time

  • Typescript
  • Node.js
  • Back-end

monymony is preparing to expand as a global service aiming for higher goals. We are looking for valuable colleagues to journey further with us. If you want to directly see and feel the value of the service you've created being used, and if you're eager to move forward and grow together, please apply!

Job Description:

  • Responsible for the backend development of the Somone service.
  • In charge of infrastructure design for data analysis.
  • Enhance work efficiency through DevOps engineering.

Main Tasks:

  • Maintenance and development of backend functionalities.
  • Performance and bug issue management and improvements.
  • Improvements on cloud infrastructure like AWS.
  • DevOps engineering.


  • 5+ years of experience in the relevant field or equivalent.
  • Experience in setting up and operating AWS or other cloud backend environments.
  • Familiarity with scalable development, refactoring, version control (Git), and systematic code management.
  • Experience with high-traffic and data processing, infrastructure setup.
  • Deep understanding of CI/CD.
  • Knowledge and operational experience with SQL DB.
  • Monitoring and issue identification capabilities.
  • No restrictions on international travel.
  • No military service restrictions.
  • Basic English skills (reading, writing, basic conversation).

Preferred Skills:

  • Experience with services having 300,000 users or equivalent.
  • Team leading experience.
  • Experience in systematic status monitoring and issue response.
  • Library development and deployment experience.
  • Open source contribution experience.
  • Deep understanding of JavaScript and TypeScript.
  • Knowledge in Node.js environment and libraries, or the ability to acquire such knowledge.

Technologies Used:

  • AWS, Firebase
  • PostgreSQL
  • Node.js. Docker, Terraform
  • JavaScript, TypeScript
  • Git, GitHub

Work Environment and Support:

  • Comfortable Work Environment
  • We focus on immersion and productivity during work hours and adhere to quitting times.
  • Unrestricted free time off! (full-day, half-day, even half-half-day:)
  • Unlimited coffee, beer, cereal, and milk. (Very diverse snacks)
  • Lunch subsidies are provided. (Breakfast on Wednesdays:)
  • We value basic principles, trust, and compliance among all team members.
  • We support tea time with the CEO, CTO, and team managers for smooth communication.

Growth and Life Support:

  • The best industry-standard work equipment is provided (e.g., M1 MacBook).
  • Support for seminars, in-house studies, education, and book purchases to enhance capabilities.
  • Lifetime free access to SumOne Gold (premium service) & pebbles as gifts for acquaintances!
  • Every other Friday, which marks the close of our sprint, allows immediate departure after meetings.
  • Work only in the morning on your birthday. (Celebration party is a bonus)
  • Shortened work hours on the eve of holidays & gifts! (Gifts are delivered to your home; no need to carry them)
  • Up to 300% incentive paid upon achieving company-wide goals.
  • 1:1 relationship counseling with the CEO is possible.

Hiring Process:

  1. Document Screening: Submit your resume (portfolio/link) via email.
  2. Assignment: There will be a task to complete before the interview.
  3. Interview: If you pass the task, you will have an interview.
  4. Final Acceptance
  • Depending on the experience, additional processes such as preliminary interviews or secondary tasks may be required.
  • Contract to regular employment (3-month probation period with 100% salary payment).
  • The probationary period applies universally to all new employees for a basic 3 months, operated in detail according to internal company rules or systems (can be extended up to 6 months).

Location of MonyMony: 3rd Floor, 35 World Cup Buk-ro, Mapo-gu, Seoul

We are looking for team members who will grow with monymony!

Did you find this post even slightly intriguing? Don't hesitate to send your freely formatted resume, career description, portfolio (and links like GitHub) to :) Please include [Position Applying For] in the email subject. Inquiries related to recruitment are always welcome.