Senior Software Engineer – Backend (AI)
Core
Design and build reliable backend services, APIs, and platform infrastructure that power Personio's AI Assistant and agentic experiences.
Role type
Senior Backend Engineer (AI Infrastructure)
Builds
Backend systems and APIs for AI features, agentic architecture, and model interaction layers
Domain
HR SaaS, Applied AI, Distributed Systems
Deliverable
production ML models | product features | infrastructure
Required skills
Backend engineering, API design, Distributed systems, JVM languages (Kotlin/Java), System ownership, End-to-end feature delivery
Preferred skills
LLM systems, RAG, Agent architectures, AWS, Bedrock
Technologies
Kotlin, Java, AWS, Bedrock
Responsibilities
Design and build backend services and APIs for AI Assistant, Build underlying platform for agentic products, Own features end-to-end, Collaborate with ML engineers on retrieval and model interaction, Make architectural decisions in emerging AI domain
Seniority
Senior, hands-on IC