T‑Systems is part of the Deutsche Telekom Group, with around 30.000 employees worldwide. We create technology with purpose to generate a positive impact on society. We are looking for curious talent, eager to learn, take on challenges, and contribute ideas that transform our customers’ experience.

We trust people: we offer autonomy, continuous support, and a collaborative environment where you can grow without limits. We are one integral team, guided by respect, integrity, and a passion for doing better every day.

Job Description

Join the Mobile DNS Squad responsible for the end‑to‑end lifecycle, operation and evolution of Deutsche Telekom's critical DNS infrastructure.

You will work closely with suppliers, DevOps engineers and operations teams to design, integrate, deploy, monitor and troubleshoot the Mobile DNS platform.

Key Responsibilities

- Implement and operate physical, virtualized and containerized systems.
- Analyze, troubleshoot and document incidents and system malfunctions.
- Improve automated failover, deployment and disaster recovery processes.
- Develop and optimize automation scripts using Ansible, Bash, Perl and Python.
- Implement changes across test, reference and production environments.
- Develop monitoring and data analysis capabilities.




- Collaborate with cross-functional teams to ensure service reliability and resilience.

Qualifications

Mandatory Skills

- DNS technologies: BIND, PowerDNS, DoH, DoT and DoQ.
- IP networking, routing, LAN/WAN and Wireshark troubleshooting.
- Monitoring tools including Grafana, CheckMK and Telegraf.
- Linux administration, particularly Red Hat 9 and SUSE 15.

Additional Skills

- Strong analytical and problem‑solving capabilities.
- Quality awareness and experience working in agile teams.
- Telecommunications industry experience is highly valued.

Additional Information

Whatdoweofferyou?

Additional Information

- On‑call duties approximately eight weeks per year.
- Occasional out-of-hours maintenance activities.
- T‑Social: socialinitiatives(sports,community,health, ...).
- Hybridworkmodel(remote/on‑site).
- Flexibleworkinghours.

Growth&development;

- Weeklylanguageclasses(English & German).
- InternationalMentoringSessions&ExperienceDays.;
- Flexiblecompensationplan (healthinsurance,mealvouchers,childcare,transport).
- Socialfund.

Wellbeing& time off

- 26+workingdaysofvacationperyear.

And many more advantages of being part of T-Systems!

T-Systems Iberia will only process the CVs of candidates who meet the requirements specified for each offer.

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📌 DevOps Engineer – Mobile DNS (m/f/d) (Madrid)
🏢 T-Systems Iberia
📍 Madrid