Senior Internal AI Platform Engineer

Personio; Dublin; Hybrid; EUR 120,000 - 180,000; Full time

Benefits offered by this job

Salary and benefits package

Pre-IPO equity

28 days paid vacation

Impact Day

Family leave

Job summary

Personio's Internal AI team is the technical engine behind our AI-driven operations across the company. As Senior Software Engineer (d/f/m) - Internal AI, you'll design, build, and maintain internal products and tools: complex agents, cross-functional automations, and interfaces that power teams.

You will own software end-to-end—from architecture to production—bringing depth in engineering and sound judgment to build the right solutions.

Qualifications

• 5+ years building and shipping production software, working independently.
• Strong Python skills — our primary backend language.
• Hands‑on experience building production AI products: agentic workflows and RAG pipelines with LLM APIs, agent frameworks (e.g. LangGraph), and MCP.
• Judgement about where AI adds value and where it's overkill.
• A track record of production‑grade work: testing, observability, and secure handling of auth and data.
• Experience deploying and running services in the cloud (AWS, Docker, CI/CD).

Responsibilities

• Design, build, and ship Personio's internal products and tools end-to-end: complex agents, cross-functional automations, and the applications and interfaces around them
• Make the architecture calls: choose the right patterns, manage complexity, and make pragmatic trade-offs between reliability, cost, and delivery speed
• Productionise and maintain: define what "done" means for an internal AI product, secure auth, error handling, monitoring, rollback, and documentation
• Own systems over their full lifetime: maintain, monitor quality, catch degradation, and keep them reliable long after launch
• Contribute to the AI platform: agent orchestration, eval platform, context layer, and connector library
• Engineering standards: document solutions clearly for maintenance, extension, and handover

Skills

Python

LLM APIs

LangGraph

MCP

AWS

Docker

CI/CD

Tools

LangGraph

Job description

Personio's Internal AI team is the technical engine behind our AI-driven operations across the company. As Senior Software Engineer (d/f/m) - Internal AI, you'll design, build, and maintain internal products and tools: complex agents, cross-functional automations, and interfaces that power teams.

You will own software end-to-end—from architecture to production—bringing depth in engineering and sound judgment to build the right solutions.