Senior Machine Learning Engineer (d/f/m)
This role will be Hybrid, based in either our Dublin, London, or Munich office 2 days a week.
Role Responsibilities: What you'll do
- Design, develop, and deploy robust machine learning and AI systems for a range of products and use cases, including generative AI.
- Integrate ML and AI models into production systems, ensuring scalability, reliability, and maintainability.
- Deploy and monitor machine learning models and systems, including CI/CD pipelines, automated testing, monitoring, and model versioning.
- Leverage cloud platforms (AWS + Snowflake) and ML infrastructure (e.g., SageMaker, feature stores) for scalable deployment.
- Collaborate with cross-functional teams (Product, Customer Experience, and other engineering teams) to deliver AI-driven features and insights.
- Ensure all ML/AI solutions adhere to best practices in data privacy, security, and ethical standards.
- Contribute to a culture of technical excellence, knowledge sharing, and continuous learning.
What you need to succeed
- University degree in Computer Science, Machine Learning, Data Science, or a related field.
- 5+ years' experience building and deploying production-grade machine learning models.
- Strong software engineering mindset - ability to write clean, reusable, and scalable code in Python.
- Experience integrating ML/AI models into production software systems.
- Solid understanding of MLOps practices, CI/CD pipelines, and automated testing frameworks.
- Hands-on experience with ML frameworks (e.g., TensorFlow, PyTorch, Hugging Face).
- Experience working with backend teams and deploying end-to-end products
What's a plus?
- Background in data science: comfort with experimentation, A/B testing, and measuring ROI/impact of ML projects (not just accuracy).
- Experience with NLP or generative AI techniques.
- Familiarity with cloud-based ML infrastructure (AWS, Snowflake, SageMaker, etc.).
Why this role?
- Join a recently created AI team focused exclusively on delivering LLM and ML-powered projects with real business impact.
- Work in a lean, well-supported environment focusing on real use cases and improving our users experience.
- Full ownership of end-to-end ML delivery: from prototype to production.
- Exposure to high-impact use cases backed by executive sponsorship - high visibility within the organization to build impactful products.
Why Personio?
We're one of Europe's fastest-growing tech companies, building the leading HR platform for SMEs. With over 15,000 customers, offices across Europe, and strong backing from top-tier investors, Personio is scaling fast - and AI is a critical enabler of that growth.
We're also proud of our culture:
- A diverse, inclusive workplace where your voice matters.
- Competitive compensation, equity, and benefits.
28 days' vacation, plus an additional day after two and four years. - Flexible, office-led but remote-friendly working with the option for international work weeks.
- Mental health support, family leave, Impact Days, sabbaticals, and regular team events.
Personio Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Personio and has not been reviewed or approved by Personio.
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Parental & Family Support — Generous family leave, childcare support, family medical leave, and company‑sponsored family events are provided. Mental‑health coverage with therapy and psychiatry access through Spring Health, plus life and vision insurance contributions, deepen family support.
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Retirement Support — A U.S. 401(k) is offered with a company match up to 5%, strengthening long‑term savings. This adds meaningful value to total rewards for employees planning for retirement.
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Equity Value & Accessibility — All employees participate in pre‑IPO equity, with a global program revamped in 2025 and RSUs rolling out internationally. These changes aim to make ownership more competitive and tax‑efficient across markets.
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What We Do
We believe small and medium-sized organizations are the backbone of global economies, and their most valuable asset is the people they employ. But many of their HR teams are held back by complicated, time-consuming processes and admin. We’re changing that with our all-in-one HR solution that transforms the way millions of people experience work every day. At the core of our people-focused product are the individuals who craft it: We proudly identify as Personios. As we build on our success as Europe’s leading HR platform for SMEs, we are looking for the brightest minds to bring their own innovative ideas to the table. When you join our team of 1800+ across Europe and the US, you’ll have an impact from day one – for our 15,000 customers and the 1.5 million employees we serve.
Why Work With Us
Personio is one of the most valuable tech startups in Europe, but we're just getting started with revolutionizing HR for the 1.7 million small and medium-sized organizations still stuck in the spreadsheet era. Now we need your experience scaling tech companies to take us to the next level.
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