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Clera

Senior Data Infrastructure Engineer, Query Engine

San Mateo, California, United States

Location
San Mateo, California, United States
Work
On-site
Employment
Full-time
Level
Senior
Function
Data & AI
Pay
Not stated
Posted
Yesterday

Pay and the market here

94 data jobs open in San Mateo: 2% remote, 20 posted in the last 30 days.

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About the role

About the Role

Join an early-stage AI infrastructure team building a query engine that connects graph-native queries with enterprise data. You will develop the coordinator, compiler, and executor components that enable reliable reasoning and aggregation across multiple data sources.

What You'll Do

  • Design and extend compiler and executor components to support new query language features and functions.
  • Build and optimize graph-native query capabilities across multiple data sources.
  • Develop pass-through query logic for platforms such as Snowflake, Databricks, and Oracle.
  • Work with the platform team to improve performance, reliability, and scalability.
  • Debug and resolve complex query execution issues in production environments.

What We're Looking For

  • At least 5 years of experience in data infrastructure, query engine development, distributed systems, or database query processing.
  • Experience building or maintaining query compilers, optimizers, or execution engines.
  • Background with graph databases or graph query languages.
  • Experience shipping distributed query processing across multiple data sources, including federated execution across heterogeneous systems.
  • Proficiency in C++, Rust, or Java, with knowledge of SQL, query optimization, or compiler design.
  • Experience optimizing query performance in high-volume or latency-sensitive environments, and familiarity with Snowflake, Databricks, or Oracle.
  • Knowledge of semantic layers, knowledge graphs, or complex enterprise data environments is beneficial.

Compensation & Benefits

Visa sponsorship is available.

Location

On-site in San Mateo, United States.

Source

Posted by Clera on their own hiring page, jobs.ashbyhq.com. OptiTalent shows it as published, read 12 Nov 2026 04:52 UTC; the original is the reference.

View the original ad ↗

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