Platform Engineer - Developer experience L4 (f​/m​/d

Platform Engineer - Developer experience L4 (f/m/d)

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?

This role requires 2 days per week in the office and is based in Munich or Dublin
.

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 centralised platform role and is passionate about developer productivity and platform excellence
. As a Platform Engineer (Developer Experience), you will play a key role in building and evolving platform solutions—such as internal tooling, SDKs, paved-road workflows, and middleware
—that empower hundreds of developers to ship faster and more reliably.

Design and support platform solutions that empower 300+ developers across 40+ product teams (e.g., internal tooling, standards, SDKs, and middleware that improve developer workflows)

Build and evolve our gRPC-GraphQL gateway that connects frontends with backend services

Create internal tools and libraries/SDKs to enhance developer productivity and platform adoption

Analyse and optimise platform systems to enhance scale, performance, reliability, and developer experience

Work hand-in-hand with product teams to ensure seamless platform integration and a strong feedback loop

Document platform capabilities and run internal training sessions

Collaborate with other platform teams to create a coherent developer platform

Drive technical excellence by simplifying platform architecture and managing technical debt

3+ years of experience in platform engineering and/or backend development

Strong programming skills in a JVM language (e.g.,
Kotlin, Java, Scala
);
Kotlin is a bonus

Experience building production-grade backend systems with attention to reliability, performance, and maintainability

A strong engineering mindset for enabling other teams: you enjoy reducing friction, improving “paved roads,” and raising standards through tooling and automation

Experience with
modern engineering practices for high-availability platforms, including testing strategies, performance optimization, and reliability considerations

Experience in establishing observability practices and instrumenting platforms for monitoring and debugging

You are data-driven and passionate about using metrics to evaluate platform performance and adoption

Strong communication skills, with the ability to build relationships across teams

Comfortable working in a highly collaborative environment, engaging in code reviews, pair programming, and cross-team discussions

Experience building developer tooling / Developer Experience initiatives (e.g., internal platforms, CLI tools, SDKs, templates, golden paths, CI/CD improvements)

Experience with
gRPC and GraphQL
, particularly in building middleware or gateway layers

Experience working with Kafka

Personio is an equal opportunities employer, committed to building an integrative culture where everyone feels welcomed and supported. We embrace uniqueness and understand that our diverse, values-driven culture makes us stronger. We are proud to have an inclusive workplace environment that will foster your development no matter your gender, civil status, family status, sexual orientation, religion, age, disability, education level, or race.

At Personio, we value in-person collaboration while also…