OverviewIn this role you will help strengthen Elasticsearch's core platform, making it easier to use, faster, maintainable, and secure.
You'll work on foundational infrastructure, shared services, and observability to empower developers and users.
You'll design scalable APIs and tackle performance and concurrency challenges, contributing to serverless orchestration and CI/CD workflows.
This is a hands-on, impactful role with cross-team collaboration and a focus on meaningful open-source and cloud/on-premise outcomes.
You will drive technical decisions that shape the platform's future.
Compensaciones / Beneficioscompetitive salary
health coverage for you and family
adaptable locations and schedules
generous vacation days
donation matching up to $****
volunteer hours (up to 40 per year)`,`parential leave (16+ weeks)
ResponsabilidadesContribute to large, impactful projects that evolve core Elasticsearch infrastructure
Identify and implement automation to improve developer productivity
Design and implement new horizontally-scalable features and APIs
Address performance and concurrency issues and propose solutions




Improve operation and observability of Elasticsearch cloud systems
Collaborate openly with the ES team, Elastic users, and open source projects
Support engineers with difficult problems
Own end-to-end operational investigations until issues are resolved
Requisitos principalesExperience crafting APIs and ability to reason through tradeoffs
Proficiency in core Java and data structures/concurrency
Experience with low-level Java (concurrency, parallelism, classloaders)
Knowledge of JDK internals (modules, memory model, GC, caching)
Experience leading large-scale projects across engineering teams
Willingness to own projects from start to finish and collaborate across teams
Track record of using AI to accelerate development and optimize code
Ability to work autonomously and drive decisions in a distributed team
strong design skills
clear communication across collaborators
autonomy and proactive problem solving
Java (core, concurrency, newer features)
API design
algorithms and data structures

📌 Senior Java Engineer (España)
🏢 Elastic
📍 España