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Senior Software Engineer - Performance Tuning - Elasticsearch

Elastic· Platform - Elasticsearch
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Hybrid (Spain)€67k - €106kfull-timePosted 2w ago

About the role

Senior Software Engineer focusing on performance tuning for Elasticsearch, contributing to performance engineering initiatives, profiling, optimization, and automation to ensure scalable, predictable performance across distributed systems.

Responsibilities

  • Contributing to core performance engineering initiatives from development to production, delivering impactful optimizations and executing architectural and code-level performance improvements.
  • Implementing foundational performance models and methodologies for complex, distributed systems.
  • Supporting optimization strategies to keep Elasticsearch performant, predictable, and scalable in diverse environments.
  • Profiling and analyzing system behavior to identify bottlenecks in logging, metrics, vector search, and ES|QL.
  • Ensuring robust performance benchmarks and regression detection for stateful and stateless (Serverless) architectures.
  • Collaborating with peers to apply performance-focused development practices to new features.
  • Contributing to automation efforts by building AI-assisted optimization harnesses for profiling, hypothesis testing, and benchmarking.
  • Providing technical guidance and peer reviews to engineers, promoting technical excellence.

Qualifications

  • Deep knowledge of Java internals and JVM memory management; ability to write high-performance, thread-safe, lock-free code; experience with large open-source and enterprise codebases.
  • Proven experience profiling and optimizing distributed systems; experience with benchmarking tools (e.g., JMH, Rally) and identifying performance regressions; implementing algorithmic or hardware-aware optimizations.
  • Solid understanding of distributed systems architecture, including partition tolerance, cluster state propagation, and scaling challenges in large-scale data stores.
  • Proven track record of using AI or advanced tooling to accelerate optimization, debug complex performance issues, and automate benchmarking workflows.
  • Ability to collaborate effectively within a team and across functions; adaptable to changing projects, codebases, or teams based on business priorities.
  • Ability to work autonomously, drive decisions, and operate in a distributed team using asynchronous, direct, and transparent communication.

Skills

Required:Java internals and JVM memory managementProfiling and optimization of distributed systemsDistributed systems architectureAI-assisted optimization

Benefits

  • Competitive pay
  • Health coverage for you and your family in many locations
  • Flexible locations and schedules for many roles
  • Generous vacation days
  • matches up to $2000 (or local currency equivalent) for charitable donations
  • Up to 40 hours per year for volunteer projects
  • Minimum of 16 weeks parental leave
Last updated Oct 8, 2026. Interested? Apply on the company site.
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