Senior Java Engineer -- Elasticsearch Platform & Observability

Elastic; Ireland; Hybrid; EUR 110,000 - 170,000; Full time

Benefits offered by this job

Fully paid health coverage

Flexible location & schedule

Generous vacation days

Parental leave (16 weeks)

Job summary

Elastic seeks a Senior Software Engineer to join the Elasticsearch team in Ireland. You will design and implement scalable, secure, and observable infrastructure that underpins Elasticsearch cloud, serverless, and on-prem deployments.

You will work across teams, tackle concurrency and performance challenges, and help drive automation, CI/CD, and developer productivity with tools like Buildkite, Argo CD, and OpenTelemetry.

Qualifications

• Great design skills and ability to communicate technical concepts across teams.
• Experience with low-level Java such as concurrency, parallelism, classloaders, etc.
• Proficient in core Java and standard data structures and concurrency constructs, plus modern language features.
• Experience leading large scale projects across engineering teams.
• Proven track record of using AI to accelerate development and optimize code while owning outcomes.
• Hands-on experience with CI/CD systems and practices (Buildkite, Argo CD, GitOps).
• Ability to collaborate across functions and work autonomously in distributed teams.
• Willingness to dive into new issues and ask for help when needed.
• Experience crafting APIs and reasoning through trade-offs.
• Experience with observability and telemetry solutions, especially OpenTelemetry.
• Knowledge of JDK internals: modules, memory model, GC, caching, etc.
• Knowledge of Go and containers/Kubernetes.
• Knowledge of Java build tools (Gradle/Maven) with preference for Gradle.
• Experience in a platform or developer productivity team.

Responsibilities

• Design and implement new horizontally scalable features and APIs in Elasticsearch.
• Solve performance or concurrency issues and propose solutions.
• Improve operation and observability of Elasticsearch cloud systems.
• Collaborate with the ES team, Elastic users, and open source projects.
• Own operational investigations end-to-end until performance or stability issues are resolved.
• Contribute to automation and integration of agentic apps into development workflows.
• Support engineers with harder problems and lead cross-team projects.

Skills

Java concurrency

Java core

Data structures

Go language

Kubernetes

CI/CD

AI in development

Build tools (Gradle)

OpenTelemetry

JVM internals

Tools

Buildkite

Argo CD

GitOps

Job description

Elastic seeks a Senior Software Engineer to join the Elasticsearch team in Ireland. You will design and implement scalable, secure, and observable infrastructure that underpins Elasticsearch cloud, serverless, and on-prem deployments.

You will work across teams, tackle concurrency and performance challenges, and help drive automation, CI/CD, and developer productivity with tools like Buildkite, Argo CD, and OpenTelemetry.