Lead Software Engineer – AI for HR (m/f/d)

SIXT; München; Hybrid; EUR 110,000 - 160,000; Full time

Benefits offered by this job

Travel discounts

AI tools access

Mobility allowance

Retirement plan

Gym & dining benefits

Hybrid work

Job summary

SIXT is reshaping HR with AI. You will own the AI for HR platform, delivering agents that assist with applications, employee questions, payroll changes, and more.

This individual contributor role emphasizes senior technical leadership, platform ownership, and weekly code delivery within a large tech org. You will decide on data access, data residency, and compliance with privacy rules, while aligning with HR priorities.

Qualifications

• Proven experience shipping production AI/LLM systems.
• Strong background in integrating LLMs with enterprise data.
• Experience with secure data handling and access controls.
• Ability to write clear technical decisions for engineers and HR.

Responsibilities

• Make key technical decisions for AI in HR and build on AWS, LLM APIs.
• Write production code weekly using Claude Code and LLM APIs.
• Develop the evaluation layer with test sets and monitoring to catch regressions.
• Ensure data privacy, access control, and compliance with EU AI Act and US laws.

Skills

Senior engineering

LLM systems in production

AI in code

Integration depth

Privacy and security

Writing decisions

Claude Code

AWS

SIXTgpt

Tools

Claude Code

AWS

SIXTgpt

Job description

Lead Software Engineer – AI for HR (m/f/d)

• Full-time
• Legal Entity: Sixt SE

SIXT is rethinking HR around AI, and you build it. HR leadership sets the priorities; you decide how to deliver them and you ship them: agents that match applicants, answer employee questions correctly, and take a contract change from request to payroll without a ticket.

This is an individual contributor role with full technical ownership. No direct reports and no plan to get any: your seniority shows in the technical calls you make, the code you ship and the standards others adopt. You belong to our software engineering organization, so you get the platform teams, code review culture and engineering peers of a large tech org, pointed at a problem most of them never touch. HR is your customer, and every SIXT employee worldwide feels what you ship. Decisions live in short design docs, and releases go out weekly behind evals.

YOUR ROLE AT SIXT

• You take the key technical decisions for AI in HR: how agents connect to our HR core, recruiting and payroll platforms, where data lives, and which actions an agent may take on its own. You build on AWS, LLM APIs and SIXT's internal AI platforms
• You write production code every week, with Claude Code and LLM APIs as everyday tools, and you set the engineering bar for the engineers building with you: code review, testing, CI/CD and observability
• You build the evaluation layer: test sets, evals and production monitoring that prove whether an agent's answer about pay, leave or a candidate is correct, and catch regressions before employees do
• You design for sensitive data from day one: access control, audit trails, data residency, and a human sign-off on every hiring, pay or performance decision
• You build compliance into the system itself, so the same platform holds up under the EU AI Act, US laws on automated hiring and privacy rules in every country we operate in
• You turn HR's priorities into a buildable plan: you size every idea, push back on the ones that aren't feasible or worth the cost, and make the technical build-vs-buy call

YOUR SKILLS MATTER

• Senior engineering you still practiceYou've built and run production systems with real users, and you still ship code yourself. You've owned big technical decisions and lived with their consequences
• LLM systems in productionYou've taken LLM-based applications or agents past the prototype stage: retrieval, tool calling, context design, evals and guardrails. You know where models fail and how to design around it
• AI in how you codeClaude Code or similar coding agents are part of your daily workflow, and you keep generated code reviewable, tested and secure
• Integration depthYou're at home with APIs, event-driven integrations and messy enterprise data models. HR or people-data experience helps but isn't required
• Privacy and security instinctsYou've built systems that handle personal or regulated data and treat access control, auditability and data minimization as design inputs from the first commit
• Writing that carries decisionsYou write technical decisions that engineers and HR stakeholders can both act on. Bring a real example

WHAT WE OFFER

• Extra benefits Enjoy discounts on SIXT rent, share, ride and SIXT+, attractive vehicle leasing offers, and exclusive deals with partners for travel, tech, fashion and more
• AI at your fingertips From day one, you'll have access to Claude by Anthropic and SIXTgpt, SIXT's own AI platform, to supercharge your work. We invest in every team member's AI journey: encouraging experimentation, building knowledge, and making sure you're ahead of the curve
• Mobility BoostYou will receive a monthly allowance from us as a contribution to your individual mobility
• Future security We contribute to your retirement plan and support you with capital-forming benefits to ensure you are well covered
• Feel-good atmosphere Stay active with our modern SIXT gym, various leisure activities like the gaming area or the SIXT choir, and enjoy our high-quality employee restaurant
• Flexibility Enjoy 30 days of vacation and a hybrid working model with flexible hours
• Giving back Take one day each year to volunteer at a charitable organization dedicated to supporting children

About us:

We are a globally leading mobility service provider with a revenue of €4.3 billion and around 9,000 employees worldwide. Our mobility platform ONE combines our products SIXT rent (car rental), SIXT share (car sharing), SIXT ride (taxi, ride, and chauffeur services), and SIXT+ (car subscription), giving our customers access to our fleet of 360,000 vehicles, the services of 4,000 cooperation partners, and around 5 million drivers worldwide. Together with our franchise partners, we are present in more than 100 countries at 2,000 rental stations. At SIXT, top-tier customer experience and outstanding customer service are our highest priorities. We believe in true entrepreneurship and long-term stability and align our corporate strategy with foresight.