【Satellite Ground System】Site Reliability Engineer (SRE)

Space | Data Science, Data Engg | Web, Mobile App (Frontend / Backend)

Location	Chuo-ku, Tokyo
Company	A Japanese startup providing Earth observation by its own constellation of microsatellites, as well as manufacturing, operating support, and contracted development of microsatellites. Establishment: 2008 Capital: 14.29 billion yen Workforces: 180+
Job Description	We are looking for a Site Reliability Engineer (SRE) who can manage and continuously improve the Ground Systems that support our satellite constellations, as well as the database infrastructure behind them. This role requires solid knowledge of database operations and administration, query languages, ORM frameworks, database migrations, and CI/CD. As a member of this team, you will support the development of the ground system for satellites, including communication with satellites, scheduling of satellite operations, and related applications. The level of autonomy and responsibility you are given will grow in line with your experience and track record. As an SRE, you will be responsible for managing mission-critical databases, implementing automated monitoring and testing, tuning performance, and providing internal training. You will work closely with the ground system engineering team and the cloud team to drive the adoption of best practices and improve operational efficiency. This is a hands-on, cross-functional role that offers significant ownership and architectural influence. - Database Operations Administer, monitor, and optimize databases that support multiple satellite constellations, both existing and in development. - Automation and Monitoring Develop tools and dashboards to automate operations, monitor performance, and proactively detect issues and weaknesses in the infrastructure. - Testing and Validation Work with the engineering team to design and implement testing strategies that ensure the reliability, performance, and consistency of the databases. - System Architecture Contribute to the overall system architecture around the databases, including data flows, schema design, and integration with other components. - Environment Management Collaborate with the cloud infrastructure team to maintain robust development and production environments and ensure data integrity. - Internal Enablement Provide documentation, guidelines, and tooling so that engineers can use the databases sustainably and efficiently.
Requirement	[Required] - Proficiency with relational, time-series, and NoSQL databases (e.g., PostgreSQL, MySQL, TimescaleDB, MongoDB, DynamoDB). - Strong command of SQL, with experience in schema design and query optimization. - Experience with at least one of the following: CI/CD pipelines, unit testing, or observability tools (e.g., Grafana, Datadog, Prometheus). - Proficiency in at least one programming language (e.g., Python, Go) for scripting and automation. - Strong communication skills and a collaborative, proactive approach to problem-solving. [Preferred] - Japanese language proficiency sufficient to discuss software development and technical topics. - Hands-on experience operating cloud-based (AWS) environments in both development and production. - Experience with ORM frameworks (e.g., SQLAlchemy, Diesel, Entity) and data modeling tools. - Experience in database reliability, predictability, and automation. - Experience with database performance monitoring and query optimization. - Experience building tools for database observability and testing.
English Level	English or Japanese at Business Level
Japanese Level	English or Japanese at Business Level
Employment Type	Permanent

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