SRE / Site Reliability Engineer

Kyash

SRE

Go

AWS

Docker

About this role

The SRE designs, builds, and operates service infrastructure for the Kyash digital wallet application. Responsibilities include designing and operating microservice execution environments, developing and maintaining CI/CD environments and deployment flows, and optimizing application resources and infrastructure costs.

The role also covers infrastructure design and rule-compliance systems aligned with PCI DSS and other requirements, documentation, improvements to development environments and productivity, performance monitoring, incident response, and other work needed to develop and operate the service.

Kyash is a fintech startup offering a digital wallet application with Visa card issuance, payments, peer-to-peer transfers, split payments, and real-time spending management. The company builds and operates the card issuance, payment systems, and application development in-house. The SRE team supports infrastructure and security for financial data transmission while meeting high security standards.

The team consists of two employees, including one engineering manager and one member, plus two contractors. The development environment uses Go; AWS services include ECS, Fargate, Lambda, Aurora, ElastiCache, SQS, SNS, S3, KMS, CloudFront, API Gateway, and Systems Manager. Databases include PostgreSQL, MySQL, and Redis. Operations tools include Terraform, GitHub, CircleCI, Docker, Datadog, PagerDuty, Slack, Jira, and Kibela. Internal tools include Slack, Zoom, Google Meet, Google Calendar, Gmail, Google Workspace, Microsoft 365, Kibela, and Zapier. Computers are Mac or Windows.

The employment type is full-time. The stated work location is Minato, Tokyo. The selection process consists of document screening, a first interview with two engineering members, a second interview with an engineering manager, a final interview with the VPoE and CEO, and an offer meeting with the VPoE.

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