Staff Backend Engineer

We run a marketplace with over 300,000 active sellers and fulfillment centres in four regions. Product reviews happen on Thursdays, with demos of whatever shipped that week.

Position summary

This is a backfill for a team member who moved to another team. Backend role focused on API design, data modelling and making slow things fast. The company is based in Anchorage, the US. The team is distributed across several countries. We hire in Japan through an employer of record, so this is a regular full-time job with local payroll and statutory benefits. Expect to work a schedule that overlaps with US Eastern business hours until about noon ET. Good written English matters here, since most updates are written.

Responsibilities

• Secure endpoints with OAuth 2.0, JWT validation and proper input checks.
• Implement background jobs and event consumers using Kafka, SQS or RabbitMQ.
• Containerize services with Docker and deploy them to Kubernetes or ECS.
• Write integration and contract tests so API changes don't break consumers.
• Coordinate with frontend and mobile engineers on API contracts and versioning.

Minimum qualifications

• 7+ years of backend development experience in a production environment.
• Understanding of concurrency, transactions, idempotency and retries.
• Proficiency in at least one of Go, Java, Kotlin, Python, C# or Node.js.
• Strong SQL and relational data modelling skills.
• Experience designing and versioning HTTP APIs.
• Working knowledge of message queues or streaming platforms.
• Clear written communication, including design docs.

Salary: ¥13,500,000 to ¥17,500,000/year

What we offer

• Monthly internet allowance.
• Performance bonus.
• Two weeks of paid leave at year end.
• Wellness allowance.
• Public holidays observed per your country.
• Paid sick days.

Candidates must be eligible to work in Japan.

We may close this posting early once we have enough applications.

Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Vinewright HQ.