Senior Java Engineer - Core/Infra - Elasticsearch

In this role you help strengthen the Elasticsearch platform by building scalable, secure, and easy-to-use core infrastructure. You will work on APIs, runtime features, and observability to empower developers and customers. Your work enables cross-team collaboration and contributes to serverless orchestration, CI/CD workflows, and plugin mechanisms. You join a mission-driven team focused on performance, reliability, and developer productivity at scale.

• competitive pay
• health coverage for you and family
• flexible locations and schedules
• generous vacation days
• donation matching up to $2000
• volunteer hours allowance and parental leave

• Develop and evolve core Elasticsearch infrastructure and APIs
• Improve developer productivity through automation and workflow integration
• Design and implement horizontally-scalable features and APIs
• Address performance and concurrency challenges with practical solutions
• Enhance operation and observability of cloud Elasticsearch systems
• Collaborate openly with the ES community and open source projects
• Support engineers by tackling hard, end-to-end problems
• Own projects from design through delivery and collaboration to final outcomes

• Strong Java proficiency and familiarity with core data structures and concurrency
• Experience with low-level Java concepts: concurrency, parallelism, classloaders
• Knowledge of JDK internals: modules, memory model, GC, caching
• Experience leading large-scale projects across engineering teams
• Proven ability to own projects end-to-end and work autonomously
• Track record of using AI to accelerate development and debugging of complex systems
• Ability to communicate technical concepts across diverse stakeholders

• Ability to work autonomously in a distributed team
• Strong collaboration across functions and teams
• Willingness to dive into new issues and seek help when needed
• API design and trade-off reasoning
• Algorithms and data structures proficiency
• Experience with concurrency and parallelism in Java