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Software Engineer - Postgres Internals

PlanetScale - San Francisco Bay Area or Remote

Posted May 22, 2026

Benefits

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About this role

Software Engineer - Postgres Internals San Francisco Bay Area or Remote PlanetScale is growing rapidly and reinventing the database space. The PlanetScale platform offers both Postgres and Vitess clusters. Vitess, an open-source database clustering system for horizontal scaling of MySQL, enables businesses to efficiently handle large-scale data workloads - without sacrificing developer experience. About the role As a PostgreSQL Core Engineer, you will spend most of your time contributing upstream to the PostgreSQL core engine and maintaining the Postgres extensions - both open-source community projects and Planetscale's proprietary extensions - that power our Postgres offering. What You'll Do - Author and review patches to the PostgreSQL core engine: performance, features, bug fixes, and security - landed through the pgsql-hackers mailing list and the Commitfest process. - Maintain Postgres extensions, both open-source (community projects we depend on) and proprietary (Planetscale-owned). Includes feature work, bug fixes, performance tuning, and major-version compatibility. - Review community patches with rigor on correctness, stability, and PostgreSQL coding conventions. - Engage the PostgreSQL community in design discussions, the 5 (five) annual Commitfests, and conferences. - Root-cause Postgres issues affecting Planetscale customers and turn fixes into upstream patches when applicable. - Improve documentation for PostgreSQL and our extensions as part of every change. What We're Looking For Required: - Strong C programming skills in large, established codebases. - Deep knowledge of PostgreSQL internals : MVCC, query planner/executor, WAL, vacuum, replication, memory contexts. - Demonstrated open-source contributions to PostgreSQL or comparable database projects (accepted patches, reviews, or extensions). -

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