Senior Java Engineer (Core Infrastructure, Elasticsearch)

Elastic; Madrid; Híbrido; EUR 70.000 - 120.000; Jornada completa

Descripción de la vacante

Elastic is seeking a highly capable engineer to contribute to core Elasticsearch infrastructure in Madrid, Spain. You will design scalable features, tackle performance and concurrency challenges, and enhance observability across cloud systems.

Ideal candidates will have deep Java experience, Go knowledge, and a track record of leading large-scale projects, with strong API design skills and proficiency in CI/CD and distributed collaboration.

Formación

• Experience with low-level Java, concurrency and classloaders.
• Ability to collaborate across functions and teams and transition between projects.
• Proven track record of using AI to accelerate development and debug complex systems.
• Hands-on experience with CI/CD systems (Buildkite, Argo CD, GitOps etc).
• Experience leading large scale projects across engineering teams.
• Proficient in algorithms and data structures.
• Willingness to own projects end-to-end, from design to delivery.
• Strong core Java knowledge and familiarity with data structures and concurrency constructs.
• Experience crafting APIs and reasoning about tradeoffs.
• Ability to work autonomously in a distributed team via asynchronous communication.

Responsabilidades

• Contribute to large, impactful projects evolving Elasticsearch core infrastructure.
• Improve developer productivity by automation and integrating agentic apps into workflows.
• Design and implement new horizontally-scalable features and APIs in Elasticsearch.
• Solve difficult issues including performance or concurrency problems and propose solutions.
• Improve operation and observability of Elasticsearch cloud systems.
• Collaborate openly with the ES team, Elastic users, and other OSS projects.
• Support our engineers with challenging problems.
• Own operational investigations end-to-end until performance or stability issues are resolved.

Conocimientos

Low-level Java

Go language

JDK internals

Concurrency & parallelism

API design

CI/CD

Observability (OpenTelemetry)

Kubernetes

Gradle/Maven

Data structures

Distributed collaboration

Herramientas

Build tools

Descripción del empleo

• 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

Benefits

• Toast to your health: Fully paid health coverage for you and your family, in many locations.
• Craft your calendar: Flexible location and schedule for most roles.
• Create space for you: Distributed by design workforce, plus generous number of vacation days each year.
• Embrace parenthood: Minimum of 16 weeks of parental leave, plus generous family formation benefits.
• Give back your time: 40 hours each year to use toward volunteering with organizations and causes you’re passionate about.
• Amplify your impact: Double your charitable giving - we match donations up to $1500 USD (or local currency equivalent).

• Experience with low-level Java such as concurrency, parallelism, classloaders, etc
• You possess the ability to collaborate across functions and teams and seamlessly transition between different projects, codebases, or teams based on business priorities
• You have a proven track record of using AI to accelerate development, debug complex systems, and optimize code, while still owning the final outcomes
• Hands-on experience with CI/CD systems and practices (Buildkite, Argo CD, GitOps etc)
• Experience leading large scale projects across engineering teams
• Proficient in algorithms and data structures
• Willingness to dive into new issues and ask for help when you need it
• You are able to own projects from beginning to end. This covers both technical design and working with others to develop needed components
• You have 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 crafting APIs and the ability to reason through tradeoffs
• You can work autonomously, drive decisions and results in a distributed team by leveraging asynchronous, direct, and transparent communication
• Knowledge of Go
• Knowledge of JDK internals: modules, the Java memory model, garbage collection, database load, caching techniques, etc
• Experience with observability and telemetry solutions, particularly OpenTelemetry
• Knowledge of containers and Kubernetes
• Experience working in a platform team or developer productivity team
• Knowledge of Java build tools (Gradle, Maven, etc), with a strong preference for Gradle experience