IT & Software

Software Engineer – Query Engines

Palantir Technologies

London · Greater London · United Kingdom

Overview

In this role, you will design and optimize the data processing stack that powers Palantir Foundry, extending engines and table formats for large-scale workloads. You’ll work on query planning, execution, and data movement to deliver correct, high-performance systems used across products. Your work helps hospitals, supply chains, and other critical operations run more efficiently and safely. The role combines deep systems engineering with real-world impact, offering opportunities to influence both open-source components and enterprise integrations.

Pay / Benefits
  • hybrid work options
  • remote work on exceptional basis
  • reasonable accommodation for disability
Responsibilities
  • Design and implement query planning and optimization to derive efficient execution plans
  • Extend execution engines with new capabilities, improving operators, parallelism, memory management, and data movement
  • Develop Foundry’s Iceberg catalog and engine integrations (table metadata, transactions, reads/writes)
  • Build shared transformation semantics and execution interfaces for Foundry workloads
  • Improve incremental processing to reuse results while preserving correctness
  • Evaluate and integrate open-source data systems, validating behavior and performance with real workloads
  • Investigate correctness and performance issues across planning, execution, storage; build tests and benchmarks
  • Collaborate with product teams and customers to align engine capabilities with security, data management, and build infra
Key requirements
  • 4+ years of professional software engineering experience
  • Engineering background in CS, Mathematics, Software Engineering, Physics, or equivalent experience
  • Proficiency in Java, Rust, Scala, or C++
  • Experience with database engines, distributed data processing systems, storage systems; depth in planning, execution, or performance optimization
  • Strong foundations in algorithms, data structures, concurrency; ability to diagnose complex system issues
  • Strong written and verbal communication and cross-team collaboration skills
  • Ownership mindset with focus on correctness
  • Curiosity about how data systems work across stack
  • Strong debugging skills across languages and layers
  • Java
  • Rust
  • Scala

Reference: WJ-747_30854045

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