Senior Backend Engineer, AI Orchestration

Stack

Responsibilities

• ▹Design and build the execution primitives for AI workflows in the Kestra engine
• ▹Build and maintain the plugins that connect Kestra to LLM providers and agent frameworks
• ▹Turn real agent use cases into reusable blueprints, together with the product team
• ▹Keep AI executions observable and debuggable to the same standard as the rest of Kestra

Requirements

• ▹A strong Java background - production Java systems built and maintained, not used in passing
• ▹Hands-on experience with LangChain4j or a comparable Java agent framework
• ▹A clear mental model of how agentic systems are actually run: tool calls, state, retries, failure modes
• ▹Comfort working close to an orchestration engine, where correctness and reliability matter more than demos
• ▹This is a Java-first role - candidates who only know the Python AI stack and don't want to write Java are not a fit
• ▹Production AI experience, including outages and the lessons learned from them, not a single demo or side project

Nice to have

• ▹AI experience in Python or TypeScript (LangChain.js) to grow from into Java
• ▹Familiarity with the team's stack: Kafka, Elasticsearch, PostgreSQL, MySQL, Docker, Kubernetes, Terraform, GCP, AWS, Azure

Soft skills

What we offer

• ▹Remote-first: work from anywhere, with access to coworking spaces worldwide
• ▹Health coverage (medical, dental, vision)
• ▹Home office setup provided by the company

About the company

At Kestra, the mission is to make orchestration and automation simpler for everyone. The open-source platform helps teams manage complex workflows with confidence, and it's already making a big impact at businesses around the world. In March 2026, Kestra closed a $25M Series A led by RTP Global, with participation from Alven, ISAI and Axeleo, backed by founders from Datadog, dbt Labs and Hugging Face.