DevSecOps Engineer with Kubernetes (f/m/x)

Senior • Remote

Warsaw, Poland

Join our engineering team to develop an APM operator for a Red Hat MicroShift–based platform. The operator will enable containerized applications to use mutual TLS (mTLS) for internet‑facing connectivity. You will work closely with the operating system and Kubernetes stack, designing an operator and an access layer for hardware security (TPM) to securely manage private keys.

By joining us, you become a member of the Embedded Competence Center at Sii is an internal organizational unit bringing together more than 500 specialists nationwide! We are currently working on about 100 projects for 50 clients from various industries, including automotive, IoT, telecommunications, and medical.

Your tasks

Design and implement a Kubernetes Operator for a Red Hat MicroShift–based platform
Enable and automate mTLS for containerized applications (internet‑facing connectivity)
Implement and integrate secure key handling (TPM access layer / hardware‑backed keys when applicable)
Work on Kubernetes networking aspects (services, ingress/egress, policies, certificates)
Build and maintain Linux‑level components and automation/scripts supporting the platform
Collaborate with platform/security stakeholders, document decisions, and deliver production‑ready code

Requirements

At least 5 years of commercial experience as a DevOps / DevSecOps
Strong Kubernetes knowledge, including networking on Kubernetes
Hands‑on experience with Kubernetes Operators
Good command of Go and/or Rust – at least one as primary language
Solid Linux fundamentals and experience working closely with the OS
Understanding of mTLS / certificate‑based authentication and secure communications
Fluency in English – at least B2
Residing in Poland required

Nice-to-have requirements

Knowledge of TPM / hardware security concepts (helpful, not mandatory)
Previous work with Red Hat MicroShift or other edge/embedded Kubernetes distributions
Experience with PKI, certificate lifecycle automation, or service mesh concepts

What we offer

Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
Comfortable workplace – class A offices or remote work
Dozens of fascinating projects for prestigious brands from all over the world
PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
Investment in your growth – meetups, webinars, training platform and technology blog – you choose
Fantastic atmosphere created by all Sii Power People

If you want to work on systems with high operational significance — apply now!

Sii

Sii is a company recognized as a "Great Place to Work" since 2015, thanks to employee feedback and the implementation of new ideas. Established in 2006, Sii has demonstrated financial stability with a revenue of 2.1 billion PLN and no debts. The company shares its profits with employees, having allocated over 76 million PLN for this purpose since 2022. Sii offers a rich benefits package, including private healthcare, a cafeteria platform, and discounts on cars. Employees can work in comfortable A-class offices or remotely. Sii is involved in numerous fascinating projects for prestigious global brands and invests 1 million PLN annually to support employee passions and volunteer actions. The company emphasizes personal development through meetups, webinars, a training platform, and a technology blog. Sii is characterized by a fantastic atmosphere created by its "Sii Power People."

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