Software Engineer Mobile SDK (iOS and Android)

UJET · Seoul, Korea · Engineering

Posted 2026-07-07

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Opportunity

UJET is searching for an experienced Software Engineer (Mobile SDK) to join our growing team! The ideal candidate is someone who has shipped several products at large scale and is meticulous with code style and quality, with the ability to own features and end-to-end architecture.

Responsibilities

Establish yourself as a subject matter expert and focus on initiatives on the mobile SDK team

Be a collaborative team player who can lead and deliver backend services with high availability, low latency, and auto scalability

Collaborate between engineers, product owners, and designers

Possess a deep understanding of the product and business goals which translate into technical design documents

Architect, design, develop, deploy, and operate services that serve start-ups to enterprise clients

Be a leader of the UJET backend developer community affecting and driving our architecture across the company

Drive strong engineering practices within your team and define and teach these practices within the UJET developer community

Contribute to the vision and long-term strategy in your domain of expertise

Find ways to spread learning across the organization (give internal talks, contribute to internal blogs, etc.)

Design, build, document, release, and support multi-tier, scalable, and reliable full-stack software systems.

Gather technical requirements, make architectural trade-off decisions, apply synchronous and asynchronous design patterns, write and review code, and deliver software products with speed and quality.

Interface and collaborate with our POS terminal vendor partners as the technical point of contact for new and on-going integration projects as needed.

Requirements

Must be a South Korean citizen or currently reside in South Korea with a valid work visa

Bachelor's Degree in Computer Science

4+ years’ experience in software development, with at least 2 years of mobile development experience

At least two years of experience with the Swift or Kotlin programming languages for iOS or Android development, respectively

Expertise in iOS and/or Android mobile operating systems and frameworks, along with a willingness to learn and contribute to the other.

Working experience developing SDKs

Experience implementing mobile design principles with deep understanding of mobile lifecycle

Efficiency in software best practice and tools like Git, Docker, CI, 12factor, etc

Ability to work collaboratively and cross-functionally, in a fast-paced start-up environment

Position Annual Range: $50,000 - $80,000

*A candidate’s actual placement within this range will depend on geographic location, work experience, education, and/or skill level.

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