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Senior Java Engineer - Security - Elasticsearch

Elastic· Platform - Data and Compute
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Hybrid (United Kingdom)Full-timePosted 1w ago

About the role

Senior Software Developer role within the Elasticsearch Security team focused on architecture, design, and delivery of core security features (authentication, authorization, tenant isolation) and high-performance security at scale for Elasticsearch.

Responsibilities

  • Contributing to core security initiatives from architecture to production, focusing on the delivery of new critical features. Participating in the technical design, planning, and execution for major security components inside the Elasticsearch core engine.
  • Developing the foundational security models for features.
  • Optimizing security performance at scale in distributed systems environments.
  • Applying cryptographic solutions to address genuine customer use cases.
  • Ensuring robust data isolation within shared infrastructure supporting disparate customers.
  • Monitoring and applying the latest advancements and best practices in security (authentication, identity management, cryptography, data access management).
  • Collaborating with peers across the company to embed security into new customer features from the outset.
  • Drive vulnerability management efforts by collaborating closely with the InfoSec team to proactively identify, assess, and remediate security risks.
  • Leverage AI-driven tools to automate vulnerability triage, prioritization, and preliminary investigation, streamlining security workflows and reducing manual intervention.

Qualifications

  • Deep knowledge of Java internals and JVM memory management. Understanding concurrency models. Ability to write high-performance, thread-safe, lock-free code. Experience with large open-source and enterprise codebases.
  • Experience building authorization systems that are scalable and performant under high concurrency and large permission sets, including designing access models, validating credentials/tokens at scale, and keeping authorization decisions consistent across a distributed system.
  • Solid understanding of distributed systems security, including node-to-node mutual trust, zero-trust transport, partition tolerance and cluster state propagation.
  • Deep knowledge of edge identity protocols (OAuth 2.0, SAML).
  • Proven track record of using AI to accelerate development, debug complex systems, and optimize code while collaborating on final outcomes.
  • Ability to collaborate across functions and teams and transition between projects/codebases/teams based on priorities.
  • Ability to work autonomously in a distributed team using asynchronous, direct, and transparent communication.

Skills

Required:Java internals and JVM memory managementAuthorization systemsDistributed systems securityOAuth 2.0 / SAML
Nice to have:AI in software development

Benefits

  • Competitive pay based on work
  • Health coverage for you and your family in many locations
  • Flexible locations and schedules for many roles
  • Generous vacation days
  • Company donations matching up to $2000 (or local currency)
  • Up to 40 hours per year for volunteer projects
  • Parental leave minimum of 16 weeks
Last updated Oct 15, 2026. Interested? Apply on the company site.
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