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Senior Java Engineer - Core/ Infra - Elasticsearch

Elastic· Platform - Elasticsearch
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Hybrid (Ireland)€87.3k - €138.1kfull-timePosted 4w ago

About the role

Senior Software Engineer focusing on core Elasticsearch infrastructure, including shared platform functionalities, observability, serverless orchestration, CI/CD workflows, and developer productivity across cloud, serverless, 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 cross-team collaboration.
  • Proven track record of using AI to accelerate development, debug complex systems, and optimize code, while still owning the 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 via asynchronous, direct, and transparent communication.

Skills

Required:APIs design and tradeoff reasoningAlgorithms and data structuresCore JavaLow-level Java (concurrency, parallelism, classloaders)CI/CD (Buildkite, Argo CD, GitOps)Project leadership

Benefits

  • Competitive pay based on work performed
  • Health coverage for employee and family in many locations
  • Flexible calendar with location and schedule options
  • Generous vacation days
  • Donations matched up to $2000 (or local currency equivalent)
  • Up to 40 hours per year for volunteer projects
  • Minimum 16 weeks of parental leave
Last updated Oct 1, 2026. Interested? Apply on the company site.
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