Senior Platform Engineer - Infra & Cloud Delivery (f/m/d) , L5

Personio's intelligent HR platform helps small and medium-sized organizations unlock the power of people by making complicated, time-consuming tasks simple and efficient. Our team of 1,500 Personios is building user-friendly products that delight our 15,000+ customers and their 1.5 million employees. Ready to make an impact from day one?
The Role
This role requires 2 days per week in the office and is based in Berlin , Dublin or Munich .
Join us to shape the future of software in the underserved and high-impact HR technology industry. Your work will have a direct and tangible impact on customers, offering ownership and the chance to make a meaningful difference. As we prepare for significant growth, you'll face exciting challenges and have the opportunity to influence our path toward becoming one of the world's leading tech companies.
This role is ideal for a highly collaborative engineer who thrives in a centralized platform role with a passion to identify & overcome system wide operational challenges by designing and implementing software engineering solutions that enable engineers to deliver change to production in a fast but stable manner. As a Senior Platform Engineer (Production Engineering), you will join the core team responsible for building and maintaining platform solutions related to AWS account management, centralized infra resource management, continuous delivery and kubernetes cluster management & operations.
What You’ll Do
Manage the company's AWS account structure, organisation & permission boundaries. Maintaining foundational infrastructure while also actively monitoring cost & utilisation.

Manage central infrastructure as code solutions that enable product teams to safely provision the infra resources they need while enforcing standardisation without causing bottlenecks.

Support the SDLC at Personio by maintaining and operating GitOps based continuous delivery pipelines that support all worklords across all environments.

Operate and maintain EKS clusters across all environments and runtime integrations for all workloads.

Document platform capabilities and run internal training sessions where necessary.

Drive technical excellence with a design led mindset. Collaborate with cross-functional teams across the engineering organisation with the aim to simplify our platform architecture, build a golden path and help tackle technical debt.

Take ownership of operational responsibilities for platform services within your domain, including on-call participation.

What You Need to Succeed
Bachelor’s degree in Computer Science, a related field, or equivalent practical experience.

5+ years of experience as a software engineer - ideally with SRE, platform, devops or cloud engineering background.

Experience with SaaS software development in distributed systems using programming languages such as Typescript, Java/Kotlin, Python.

Hands on experience with cloud & infra concepts - AWS, Kubernetes, Terraform, Datadog

Hands on Experience with CI/CD tooling (GitHub Actions/GitOps tools)

You can demonstrate a high quality bar regarding operational best practices.

You understand how to utilize metrics to define and measure the impact of your work.

You have a solid tactical mindset and can connect your work with high level strategies set by engineering management and senior engineers.

You have excellent written and spoken English (level C1/C2 on the CEFR scale).

You thrive in a blameless environment where every mistake is an opportunity to learn.

You embrace feedback and can demonstrate previous examples of growth in your career.

Finally, you have a good sense of humor. Have fun with us, learn with us from mistakes and bring your good vibes!

AI Fluency: You have hands-on experience using AI to improve your workflow, and the sound judgment to know exactly when to rely on it and when to step in yourself.

Nice to Have
Software engineering skills which help you understand the running applica