Senior DevOps Engineer - Security (f/m)

WE DELIVER TECHNOLOGY SOLUTIONS CONNECTING YOUR WORLD!

Group Network Technology (GNT) is a key part of Deutsche Telekom, where international teams shape and deliver innovative telecommunications IT and network technology solutions across Europe - from architecture and engineering to development, testing, infrastructure, and operations.

In Cloud, we build and operate Deutsche Telekom’s on-prem Telco Cloud across all layers - from hardware to orchestration - based on open-source technologies. This is where modern infrastructure meets real-world impact at scale.

Our chapter-based model creates a strong home for expertise, learning, and collaboration - empowering people to grow, contribute in agile teams, and thrive in an inclusive environment while making a meaningful difference for our customers.

What you'll be doing

• Take leadership in the integration of security best practices into the entire DevOps lifecycle, ensuring robust protection of cloud-native platforms and services.
• Architect, implement, and continuously improve security services, CI/CD pipelines, and cloud infrastructure, with a focus on automation and scalability.
• Design and enforce secure configuration management, secrets handling, RBAC, and network policies across all environments.
• Mentor and coach engineers on secure coding, DevSecOps principles, and emerging security technologies.
• Stay current with the latest security threats, trends, and regulatory requirements, and drive continuous improvement in security posture.
• Participate in on-call rotation (for stand-by operations). 

What we are looking for

• University degree in Computer Science, Telecommunication Engineering, Information Systems, or comparable qualification.
• Fluent in English, verbally and written.
• 5+ years of experience in cloud-native environments, with a proven track record in DevOps and platform engineering.

Technical skills

• Advanced knowledge of Kubernetes security, including secure application configuration, RBAC, network policies, and secrets management.
• Deep expertise in securing Linux-based environments, including advanced shell scripting and automation for security operations.
• Strong proficiency in Infrastructure as Code (IaC) security using tools like Helm, Ansible and Terraform.
• Proven experience architecting and maintaining secure CI/CD pipelines, integrating automated security testing, code analysis, and compliance checks (e.g., SAST, DAST, dependency scanning).
• Experience with monitoring tools (e.g., Prometheus, Grafana).
• Strong programming or scripting skills (e.g., Python, Go, Bash) for building security automation and custom tooling.

Nice-to-Have

• Contributions to open-source security projects or active participation in the security community.
• Familiarity with GitOps methodologies and continuous delivery tools like Argo CD is a strong plus.
• Kubernetes automated policy enforcement knowledge (e.g., OPA/Gatekeeper, Keyverno).
• Hands-on experience with vulnerability management, threat modeling, and remediation in cloud-native and containerized environments.
• Experience with developing APIs and Kubernetes operators.
• Familiarity with regulatory and compliance frameworks (e.g., ISO 27001, GDPR, NIS 2) and their technical implementation in DevOps workflows.
• Relevant security certifications (e.g., CKS, CISSP, OSCP, AWS Security Specialty).

Don't worry if you miss some of these skills – we are here to grow and develop you.

Social skills

• A mindset of continuous learning, willingness to share knowledge and learn from others.
• Ability to innovate and find solutions to complex problems.
• Being a strong individual contributor and an empathic team player.
• Being supportive to colleagues and a mentor for junior coworkers.
• Ability to communicate effectively with different stakeholders in the company up to management level.

What you can expect

• Our team is dedicated to supporting new team members and we're building an environment that appreciates knowledge sharing and mentorship. Our experienced team members are passionate about coaching junior and new members of the team.
• We take a long-term commitment when it comes to our employees. You will develop your career working in truly innovative projects of Deutsche Telekom Group, exploring the latest trends and technologies which enable the product development process.
• We offer an open and friendly working environment, competitive remuneration package and attractive benefit scheme.
• Enjoy the benefits of flexible hours, part-time roles, and remote work options - so you can balance your career with family life and personal priorities.

We offer our people the best

• Smartphone: Choose your phone and get a compensation of up to 25,800 CZK every 3 years.
• Employee tariff: Use unlimited data, call and text for lower prices for private and business purposes.
• Yearly bonus: You can get a bonus of up to 15% of your annual fixed salary each year depending on the company’s success.
• T-Mobile discounts: Enjoy the 75% discount on 8 T-Mobile services for your family and friends.
• Partner discounts: Enjoy lower prices of products and services with our partners.
• Flexible hours: Adapt your work to your needs thanks to the home-office option (according to the agreement with the manager).
• Shares program Shares2You: Become a shareholder of the Deutsche Telekom Group and take advantage of the associated benefits.
• Rest and recreation: Relax with 6 weeks of holidays and 1 free day for charity activities.
• MultiSport: Sport and relax with your loved ones thanks to the discounted MultiSport card.
• uLékaře.cz: Take care of your health with free online prevention and appointments with medical specialists for you and your whole family.
• Healthcare: Take care of your wellbeing with high-quality care for a discounted price with our contractual facility.
• Education and development: Broaden your horizons with our internal T-Univerzity offering a wide range of courses.
• Cafeteria: Choose from a wide range of benefits worth up to 15,000 CZK per year - sports and cultural services, health and beauty, transport allowances, holidays or language courses.
• Day for a good deed: You can devote one working day a year to volunteering in non-profit organizations and thus contribute to social responsibility together with us.
• Psychological consultations: Are you having troubles in your private or professional life? Share your burden anonymously via phone or online.
• Meal contribution: Enjoy a delicious meal with a work-day allowance of 123.90 CZK.
• Sabbatical: Sometimes we all need to switch off. That’s why, after working for 2 years and upon agreement with your manager, you can take 1 month off to do whatever you need.
• Pension allowance: Get ready for your retirement with a pension allowance after 12 months with us.

Everyone is welcome to join us

Our employees feel that they have equal employment and career development opportunities with us, regardless of age, gender and gender identity, sexual orientation, physical and mental ability, nationality, social and ethnic origin, political views, religion and world view. This makes us very happy. We are committed to continuous improvement and to creating a safe working environment for all.

What awaits you

1. Has the job offer captured your interest? Fill in the application form and let us know about yourself.
2. We will assess the information you send us and will get back to you under any circumstances.
3. We will contact the chosen applicants and specify the details.
4. A job interview is a two-way opportunity to get to know each other better.
5. We will inform you about the result of the interview as soon as possible. Successful candidates will receive a job offer.
6. In our company, according to our job architecture, you will perform the position of  „DevOps Engineer“.