Senior Backend Engineer — Japan

Xsolla
Tokyo, Japan
On-site

Who this role is best for

Aimed at senior backend engineers with experience in Go and distributed systems who thrive in collaborative, dynamic environments in Tokyo.

Best fit for

  • Candidates with 5+ years of Go backend experience and a track record in cloud-native systems
    — “5+ years of backend development experience in Go or a similar language”
  • Individuals who have led architectural improvements in microservices or event-driven systems
    — “drive architectural improvements and deliver resilient, high-performance services in production environments”
  • Professionals comfortable with on-call rotations and maintaining production systems
    — “Participate in on-call rotation to support production systems and respond to incidents”

Things to consider

  • The role may involve significant responsibility for production system reliability
    — “Own your code in production, monitor, debug, and continuously improve service performance and reliability”

How to stand out

  • Highlight experience with Kafka and microservices in your resume and interview narrative
    — “Develop event-driven systems using Go and Kafka”
  • Demonstrate your ability to make impactful architecture decisions in your portfolio
    — “Drive architecture decisions that improve performance, resiliency, and maintainability”
  • Emphasize your fluency in Japanese and any prior work in gaming or commerce systems
    — “Business-level proficiency in Japanese is required”
  • Showcase experience with Docker and Kubernetes in your technical summaries
    — “build scalable microservices in containerized environments using Docker and Kubernetes”
  • Include examples of automated testing and CI/CD implementation in your application materials
    — “Write automated tests and follow CI/CD best practices to ensure high-quality deployments”
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • Design, build, and maintain backend services
  • Develop event-driven systems
  • Build scalable microservices
  • Drive architecture decisions
Typical background
5+ years of backend development experience in Go or a similar language

Skills & requirements

Required

GoDockerKubernetesKafkaMicroservices ArchitectureCloud InfrastructureObservabilityMonitoringPerformance OptimizationTroubleshooting Production IssuesBusiness-level Proficiency In Japanese

Preferred

GamingPaymentsCommerce SystemsAdtechOffer Monetization PlatformsRedis

Stack & domain

GoDockerKubernetesKafkaRedisMicroservices ArchitectureDistributed SystemsEvent-based CommunicationObservabilityMonitoringPerformance OptimizationBackend DevelopmentCloud Infrastructure

About the role

Original posting from Xsolla via Lever

ABOUT YOU

We are looking for a Senior Backend Engineer who is detail-oriented, proactive, and highly collaborative to join our Engineering team. The best candidate will be someone who thrives in a fast-paced, highly collaborative, and exceptionally dynamic setting and is excited to design and build scalable backend systems, drive architectural improvements, and deliver resilient, high-performance services in production environments.

Strong technical expertise in Go, distributed systems, and microservices architecture is essential, along with experience in building and operating cloud-native applications in containerized environments using Docker and Kubernetes. The ability to troubleshoot complex production issues, optimize system performance, and manage event-driven architectures using Kafka or similar streaming platforms will be key to your success in this role.

If you're passionate about building reliable, scalable systems that power high-impact products and love creating seamless infrastructure that enables innovative payment, gaming, or commerce experiences, we would love to hear from you!

ABOUT US

Xsolla is a global commerce company with robust tools and services to help developers solve the inherent challenges of the video game industry. From indie to AAA, companies partner with Xsolla to help them fund, distribute, market, and monetize their games. Grounded in the belief in the future of video games, Xsolla is resolute in the mission to bring opportunities together, and continually make new resources available to creators. Headquartered and incorporated in Los Angeles, California, Xsolla operates as the merchant of record and has helped over 1,500+ game developers to reach more players and grow their businesses around the world. With more paths to profits and ways to win, developers have all the things needed to enjoy the game.

For more information, visit xsolla.com.

Responsibilities:

  • Design, build, and maintain backend services that power core products and platforms.
  • Develop event-driven systems using Go and Kafka.
  • Build scalable microservices in containerized environments using Docker and Kubernetes.
  • Drive architecture decisions that improve performance, resiliency, and maintainability.
  • Collaborate with engineers, product managers, designers, and QA to deliver end-to-end solutions.
  • Own your code in production, monitor, debug, and continuously improve service performance and reliability.
  • Write automated tests and follow CI/CD best practices to ensure high-quality deployments.
  • Participate in code reviews, technical discussions, and knowledge sharing across teams.
  • Participate in on-call rotation to support production systems and respond to incidents.

Qualifications & Skills:

  • 5+ years of backend development experience in Go or a similar language.
  • Strong understanding of microservices architecture, distributed systems, and event-based communication.
  • Familiarity with cloud infrastructure and container orchestration (e.g., Kubernetes, Docker).
  • Solid understanding of observability, monitoring, and performance optimization.
  • Ability to troubleshoot production issues, analyze system behavior, and drive resolution.
  • Business-level proficiency in Japanese and English is required. 

Nice to Have:

  • Background in gaming, payments, or commerce systems.
  • Experience in adtech or offer monetization platforms.
  • Hands-on experience with Kafka or equivalent streaming platforms.
  • Experience with Redis or other in-memory data stores.
  • Experience with cloud platforms (e.g., AWS, GCP, or Azure).
  • Familiarity with ClickHouse, Postgres, or other analytical/OLAP/OLTP databases.
  • Prior experience working on internal platforms or developer-facing tools.

The duties and responsibilities of this position may evolve over time to support the organization's goals and individual growth. This job description is intended to outline the general nature and level of work being performed and is not intended to be an exhaustive list of all duties, responsibilities, and qualifications required. By submitting your application, you consent to Xsolla conducting background checks, where permitted by law, after the final interview stage. All checks will comply with local regulations, and your information will be handled confidentially.Xsolla takes your privacy seriously and will not sell or externally distribute any personal data received during the hiring process. In accordance with applicable data protection laws including the Act on the Protection of Personal Information (APPI), Xsolla is committed to protecting your personal information and respecting your privacy. For any inquiries related to data privacy, please contact: careers@xsolla.com

Explore more opportunities at: https://xsolla.com/careers

Source: Xsolla careers (Lever)

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