42dot

Senior Backend Engineer(Mobile Platform)

42dot
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3 months ago
Sŏngnam, Korea, SouthSenior

Responsibilities

  • Design and develop backend systems for services connecting smartphones and vehicles.
  • Build and operate scalable service platforms spanning vehicles, mobile clients, and cloud environments.
  • Develop and operate APIs and serving systems that handle high-volume vehicle and mobile client traffic.
  • Monitor operational logs and metrics, respond to incidents, and continuously improve service stability and quality through automation.
  • Participate in design reviews and technical decisions, turning complex problems into reusable and scalable system improvements.

Requirements

  • At least 7 years of experience designing, developing, and operating backend services based on Spring Boot, Kotlin, Java, and/or Go.
  • Experience designing and operating production APIs or backend services that handle live traffic.
  • Experience diagnosing and improving service issues using logs and metrics.
  • Understanding of authentication and authorization protocols including OAuth 2.0 and OpenID Connect.
  • Experience leading initial design, system structuring, standardization, and operational stability improvements.
  • Preferred: experience developing stateful real-time communication services using WebSocket, gRPC Streaming, or MQTT.
  • Preferred: large-scale Spring Boot service development and operations experience.
  • Preferred: high-performance server development with Go.
  • Preferred: operating services with AWS, Kubernetes, and Helm.
  • Preferred: service design and operations in an MSA environment.
  • Preferred: connected-vehicle, IoT, or device-integration service development experience.
  • Preferred: multilingual, multi-region, or global service experience.
  • Preferred: technical leadership, design review, and junior mentoring experience.

Benefits

  • A three-month probationary period may apply.
  • The interview process may change depending on scheduling and progress.
  • Veterans and employment-protection beneficiaries are given preference according to applicable law.
  • Registered persons with disabilities are given preference according to applicable law.

Tech Stack

Categories

42dot

About 42dot

501-1,000 employees

42dot builds software-defined vehicle and autonomous mobility platforms for automakers and mobility service providers. Its products include AI-driven vehicle software, data-based update services, and core platform components such as API gateways and identity/access management to connect services securely. The privately held company is headquartered in Seongnam-si, Gyeonggi-do, and focuses on transportation and automotive markets.

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