Job Description

At the Telco Hub in Madrid, we are pioneers in merging IT and Telco, building and scaling Telco as a Platform (TaaP) on our proprietary layered cloud. Our teams operate in cross-country and cross-functional squads, delivering cutting-edge services to Europe's most valued Operator. Our mission is to create the best customer experience based on three core principles:

• ✅ Cloud-based – Harnessing the latest technologies for scalability and performance.

• ✅ Automated – Driving efficiency through AI, automation, and DevOps.

• ✅ Sustainable – Building a future-ready, environmentally conscious infrastructure.

We are looking for top engineering talent eager to grow technically and professionally in an innovative, dynamic, and collaborative environment. If you are passionate about shaping the future of telecommunications, this is your place!

The DNS Squad (consisting of 12 team members) holds the end-to-end responsibility for the resolving and authoritative DNS systems for Deutsche Telekom AG. These platforms are part of the critical infrastructure and are central core components of our German network. We are looking for a System Engineer to join our team for the resolving DNS platforms. These platforms are resolving DNS Requests for mobile & fixed networks but also for IoT. The Team is responsible for the entire lifecycle and further development. You will be working closely with our supplier and devops engineers to design, integrate, deploy, monitor and troubleshoot our resolving DNS platforms.

Your Task

We are looking for a System Engineer to join the DNS Squad at the Telco Hub in Madrid. This team of 12 members holds end-to-end responsibility for the resolving and authoritative DNS systems for Deutsche Telekom AG, which are critical infrastructure and central core components of the German network. This position focuses on the resolving DNS platforms that handle DNS requests for mobile and fixed networks, as well as IoT. This position is based in Madrid at the Telco Hub.

You will work closely with suppliers and DevOps engineers to design, integrate, deploy, monitor, and troubleshoot resolving DNS platforms. The team is responsible for the entire lifecycle and further development of these systems, operating in cross-country and cross-functional squads to deliver cutting-edge services.

Responsibilities

• Implementation and operation of physical, virtualized and containerized system environments- focus on integrating a new IoT resolving Plattform in Kubernetes

• Analysis, troubleshooting and documentation of system malfunctions

• Regular checks and refinement of automated processes and strategies such as failover, deployment and disaster recovery to ensure a highly available and resilient system with minimum recovery time

• Identification, documentation and structuring of new test use cases

• Development and optimization of scripts (Ansible, Bash, Perl, Python)

• Implementing changes in test, reference and productive systems to enhance system stability and/or provide new features

• Development of new methods and tools for data analysis and monitoring

• Cooperate with cross-functional teams to ensure end-to-end system functionality

• Collaborate closely with the German operations team to streamline processes, enhance software, tools and system performance and apply innovative technologies and concepts

Your Profile

We are looking for a System Engineer to join our DNS Squad with strong expertise in DNS systems, Kubernetes orchestration, IP networking, and monitoring systems. The ideal candidate will have experience working in telecommunications environments and be comfortable with on-call responsibilities.

Must Have Skills

• Fundamental knowledge of DNS (PowerDNS, DoH/DoT/DoQ)

• Experience working in a telecommunications (TelCo) company (preferred)

• Extensive know-how in working with Kubernetes to orchestrate CNFs (Cloud Native Functions)

• Proficiency in using and adapting configurations for Kubernetes

• Experience with IP networks, router and LAN/WAN technologies

• Experience troubleshooting networks with tracing tools (e.g. Wireshark)

• Hands-on experience with monitoring systems and data analytics (Prometheus, Medusa)

• Willingness to be on-call for approximately 8 weeks per year

• Willingness to rarely perform tasks outside of regular working hours

Nice to Have Skills

• Very good analytical skills

• Strong quality awareness

• Experience in classic and agile forms of cooperation

Additional Information

What do we offer you?

Work environment & flexibility

• International, dynamic and collaborative environment

• T-Social: social initiatives (sports, community, health, ...)

• Hybrid work model (remote/on-site)

• Flexible working hours

Growth & development

• Customized training: access to Coursera to learn whatever you want, whenever you want

• Weekly language classes (English, Spanish & German)

• International Mentoring Sessions & Experience Days

Compensation & benefits

• Flexible compensation plan (health insurance, meal vouchers, childcare, transport)

• Telemedicine

• Life and accident insurance

• Social fund

Wellbeing & time off

• 26+ working days of vacation per year

• Free access to specialist services (medical, legal, wellness)

• 100% salary coverage during medical leave

And many more advantages of being part of T-Systems! If you are looking for a new challenge, do not hesitate to send us your CV! Please send CV in English. Join our team! T-Systems Iberia will only process the CVs of candidates who meet the requirements specified for each offer.