Senior Java Engineer, AI Inference Platform

Elastic; Portugal; Hybrid; EUR 56,000 - 88,000; Full time

Benefits offered by this job

Health coverage

Flexible locations

Generous vacation days

Donation matching

Volunteer hours

Parental leave

Job summary

Elastic, the Search AI Company, is seeking a Senior Java Developer to join our Elasticsearch team and advance the Inference API. You will maintain the plugin framework, REST API, and contribute to architecture across streaming and billing integration, collaborating with the Kibana team.

You should have 5+ years of production Java experience, strong API design skills, and a proven ability to work autonomously in a distributed environment while delivering reliable, scalable software.

Qualifications

• 5+ years of production Java experience in large codebases.
• Experience designing ergonomic APIs and the ability to reason through tradeoffs.
• Experience with low-level Java such as concurrency and classloaders.
• Proven track record of using AI to accelerate development and optimize code.

Responsibilities

• Build and maintain integrations with internal systems and external inference providers, including schema negotiation, streaming (SSE), and error normalisation
• Contribute to the inference plugin's internal architecture: task settings, chunking strategies, rate limiting, and provider-level configuration
• Review open source contributions to the codebase and ensure standards are met
• Participate in on-call rotation for inference-related incidents
• Write thorough tests: unit tests (ESTestCase), YAML REST integration tests, and rolling-upgrade tests

Skills

Java experience

API design

Concurrency

Team collaboration

Autonomous work

Tools

Gradle

Maven

ESTestCase

Job description

Elastic, the Search AI Company, is seeking a Senior Java Developer to join our Elasticsearch team and advance the Inference API. You will maintain the plugin framework, REST API, and contribute to architecture across streaming and billing integration, collaborating with the Kibana team.

You should have 5+ years of production Java experience, strong API design skills, and a proven ability to work autonomously in a distributed environment while delivering reliable, scalable software.