Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. By taking advantage of all structured and unstructured data — securing and protecting private information more effectively — Elastic’s complete, cloud-based solutions for search, security, and observability help organizations deliver on the promise of AI.
What is The RoleWe are seeking a Senior Software Developer to join the Elasticsearch Security team. In this role, you will contribute to the architecture and design of Elasticsearch's main features. Your goal is to participate in providing high-performance security at all levels. This includes ensuring that our distributed data store has top-quality security at scale.
What You Will Be DoingContributing 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.
Ensuring robust data isolation within shared infrastructure supporting disparate customers.
Monitoring and applying the latest advancements and best practices in security. This includes authentication, identity management, cryptography, and 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.
What You BringYou have deep knowledge of Java internals and JVM memory management.



You can write code that is high-performance, thread-safe, and lock-free. You have a solid comprehension of distributed systems security, including node-to-node mutual trust, zero-trust transport, partition tolerance and cluster state propagation.
You possess the ability to collaborate across functions and teams and seamlessly transition between different projects, codebases, or teams based on business prioritiesYou can work autonomously, supporting decisions and results in a distributed team by leveraging asynchronous, direct, and transparent communication.
Familiarity with the implications of Post-Quantum Cryptography (PQC) and readiness to support the migration of services to quantum-resistant cryptographic algorithms.
Hands-on experience mapping engine-level technical controls to FedRAMP (Moderate/High), FIPS 140, and SOC 2 requirements.
Experience working on the internals of a data store or search engine.
It doesn’t matter if you’re just out of college or your children are; We match up to $2000 (or local currency equivalent) for financial donations and serviceUp to 40 hours each year to use toward volunteer projects you loveEmbracing parenthood with minimum of 16 weeks of parental leaveDifferent people approach problems differently. Qualified applicants will receive consideration for employment without regard to race, ethnicity, color, religion, sex, pregnancy, sexual orientation, gender perception or identity, national origin, age, marital status, protected veteran status, disability status, or any other basis protected by federal, state or local law, ordinance or regulation.
Employee Polygraph Protection Act (EPPA)Poster and Know Your Rights (Poster)Elasticsearch develops and distributes technology and information that is subject to U.
Belarus, Cuba, Iran, North Korea, Syria, or Russia, including the Ukrainian territories annexed by Russia (The Crimea region of Ukraine, The Donetsk People's Republic (DNR), The Luhansk People's Republic (LNR), Kherson or Zaporizhzhia).

📌 Senior Java Engineer (Madrid)
🏢 Elastic
📍 Madrid