Company Description 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 Project / Role Overview 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 Tribe Data is responsible for a system landscape of central components of the fixed and mobile network, which encompasses a wide range of different systems and platforms.





The T‑DAS SDM Lifecycle Squad is responsible for the planning and operation of the central network databases (CNTDB) for all access networks (mobile, fixed‑line, M2M), as well as HLR/HSS throughout their entire lifecycle, along with 5GC‑relevant systems such as UDM & AUSF. This includes ensuring the stable operation of the SDM platform, as well as the deployment and piloting of the systems in a cloud environment.

As part of this job posting, one Solution Designer is being sought for the SDM Lifecycle Squad.

Responsibilities And Duties

End‑to‑end operation of the frontend systems in the 5G Core domain (UDM, AMF, SMF, NRF) as well as the 4G Core (HSS and DRA) in a cloud environment

Monitoring of frontend systems in the 5G/4G Core domain with Kibana and Grafana

Incident resolution and support for problem management

Checking the cloud cluster status using kubectl and k9s

Adjusting configurations using GitOps, including change management

Protocol‑level tracing using NetScout and Wireshark

Qualifications Must‑have requirements

In‑depth knowledge and experience in the area of 5G Core (UDM, AMF, SMF, NRF)

Confident use of tools such as kubectl, k9s, Kibana, Grafana, GitOps,



Netscout and Wireshark

Experience in YAML and JSON is an advantage, experience in classic and agile forms of cooperation

Basic willingness to take on on‑call duty after thorough training

Nice‑to‑have Requirements

Basic knowledge of 4G Core (HSS, DRA)

Tools and Platforms

CNTDB, UDM+AUSF (AMF, SMF, NRF) Kubernetes based Cloud, kubectl, k9s, Kibana, Grafana, GitOps, Netscout and Wireshark

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.

#J-18808-Ljbffr

📌 4G/5G Core Network DB Operator (m/f/d) (Madrid)
🏢 T-Systems Iberia
📍 Madrid