Principal Site Reliability Engineer responsible for AWS infrastructure and reliability engineering. Collaborating across teams to enhance platform performance and security practices.
About the role
- Postgres DBA managing lifecycle of databases and ensuring reliability for Supabase. Collaborating with teams, optimizing performance, and providing operational excellence.
Responsibilities
- Manage the lifecycle of Postgres databases - platform RDS clusters and customer project databases.
- Design and execute strategies for low-downtime major version upgrades and database migrations.
- Proactively identify and resolve database performance issues before they impact users.
- Build and maintain comprehensive monitoring, alerting, and observability for database systems.
- Write detailed run books, technical documentation, and operational guides.
- Identify reliability risks and implement preventative measures.
- Participate in on-call rotation to support our global platform.
- Work with development teams to optimize database schema and query patterns.
- Analyze and optimize slow queries, connection pooling, and resource utilization.
- Tune Postgres configurations for different workload patterns.
- Monitor and address database bloat, vacuum strategies, and WAL management.
- Partner with platform engineers, product teams, and SREs to deliver reliable database services.
- Communicate database changes and maintenance windows clearly to stakeholders.
- Share knowledge and mentor team members on Postgres best practices.
Requirements
- Deep understanding of Postgres internals, architecture, and advanced features.
- Production experience with replication (logical and physical), backups, and disaster recovery.
- Strong command of query optimization, EXPLAIN plans, indexing strategies, and performance tuning.
- Experience managing Postgres at scale in cloud environments.
- Hands-on experience with AWS RDS for platform infrastructure.
- Familiarity with cloud infrastructure concepts, networking, and storage systems.
- Understanding of IaC tools and automation approaches.
- Experience with other cloud database services (GCP Cloud SQL, Azure Database) is a plus.
- Track record of maintaining high-availability database systems.
- Obsessive about monitoring, observability, and measuring what matters.
- Proactive approach to identifying and mitigating risks.
- Experience with production troubleshooting and supporting live systems.
- You write clear run books and technical documentation.
- You're good at explaining complex database concepts to different audiences.
- You record decisions and share knowledge effectively in async environments.
- You thrive operating independently with high-level guidance.
- You see problems through to resolution, not just escalation.
- You automate repetitive tasks and build tools to make the team more effective.
- Proficiency in TypeScript or Go (we can teach these).
- Experience with Postgres extensions and customization.
- Contributions to Postgres or database-related open source projects.
- Familiarity with backup tools like WAL-G, pgBackRest, or Barman.
- Experience with database migration strategies and tooling.
- Background in SRE or DevOps practices.
Benefits
- Fully Remote
- ESOP
- Tech Allowance
- Health Benefits
- Annual Off-Sites
- Flexible Work
- Professional Development
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