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Senior Java Engineer - Core / Infra - Elasticsearch

Elastic· Platform - Elasticsearch
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Hybrid (Poland)PLN 307.8k - PLN 486.9kfull-timePosted 3w ago

About the role

Senior Software Engineer role on the Elasticsearch team focused on foundational infrastructure, shared functionalities, observability, and orchestration of Elasticsearch across serverless, cloud, and on-premise deployments.

Responsibilities

  • Contributing to large, impactful projects that evolve the core infrastructure that underpins Elasticsearch.
  • Making Elasticsearch developers more productive by identifying and developing opportunities for automation, and integrating agentic apps into development workflows.
  • Designing and implementing new horizontally-scalable features and APIs in Elasticsearch.
  • Solving difficult issues, including performance or concurrency issues, and proposing solutions.
  • Improving operation and observability of Elasticsearch cloud systems.
  • Collaborating in the open with the ES team, Elastic users, and other supporting open source projects.
  • Supporting our support engineers with the harder problems.
  • Owning operational investigations end-to-end, until performance or stability issues are successfully resolved.

Qualifications

  • Experience crafting APIs and the ability to reason through tradeoffs.
  • Proficient in algorithms and data structures.
  • Strong skills in core Java and are conversant in the standard library of data structures and concurrency constructs, as well as newer language features.
  • Experience with low-level Java such as concurrency, parallelism, classloaders, etc.
  • Hands-on experience with CI/CD systems and practices (Buildkite, Argo CD, GitOps etc).
  • Experience leading large scale projects across engineering teams.
  • Willingness to dive into new issues and ask for help when you need it.
  • Ability to own projects from beginning to end including technical design and coordinating with others.
  • Proven track record of using AI to accelerate development, debug complex systems, and optimize code, while owning final outcomes.
  • Ability to collaborate across functions and teams and switch between projects, codebases, or teams based on priorities.
  • Ability to work autonomously, drive decisions and results in a distributed team using asynchronous, direct, and transparent communication.

Skills

Required:API designAlgorithms and data structuresCore JavaLow-level Java (concurrency, parallelism, classloaders)CI/CDProject leadershipAutonomous work

Benefits

  • Competitive pay based on the work you do here and not your previous salary
  • Health coverage for you and your family in many locations
  • Flexible locations and schedules for many roles
  • Generous number of vacation days
  • Company donations matching up to $2000 (or local currency equivalent)
  • Up to 40 hours per year toward volunteer projects
  • Minimum of 16 weeks of parental leave
Last updated Oct 1, 2026. Interested? Apply on the company site.
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