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4G/5G Core Network DB Operator

Hybrid in Madrid·Full-time·Added 5 months ago (last checked 12 Oct)

Overview

Work mode
Hybrid, Madrid
Contract
Full-time
English
Required
Benefits
Private health insurance, flexible pay plan, meal vouchers

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Skills

Nice to have

Requirements

What we're looking for

  • 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

  • Basic knowledge of 4G Core (HSS, DRA)

Pay & benefits

What you'll get

  • International, dynamic and collaborative environment 
  • T-Social: social initiatives (sports, community, health,...)
  • Hybrid work model (remote/on-site)
  • Flexible working hours
  • Customized training: access to Coursera to learn whatever you want, whenever you want
  • Weekly language classes (English, Spanish & German)
  • International Mentoring Sessions & Experience Days
  • Flexible compensation plan (health insurance, meal vouchers, childcare, transport)
  • Telemedicine
  • Life and accident insurance
  • Social fund
  • 26+ working days of vacation per year
  • Free access to specialist services (medical, legal, wellness)
  • 100% salary coverage during medical leave

The role

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-DAT 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 LifecycleSquad.
 

What you'll do

  • 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

Tools and Platforms

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

Hiring process

Apply online through the job portal; plan for six to eight weeks from application to acceptance

  • Applications are accepted only through the online job portal.
  • Status and next steps are visible in the applicant profile's applications overview.
  • Group-level statement from T-Systems International, not specific to Iberia.

About T-Systems Iberia

T-Systems Iberia is the Spanish subsidiary of T-Systems, the digital services arm of Deutsche Telekom, one of the world's leading telecommunications and IT services providers. T-Systems offers a broad range of IT services including cloud computing, cybersecurity, AI, data analytics, and enterprise application management, serving large enterprises and public sector clients. With a global workforce of tens of thousands, T-Systems operates across multiple countries, and its Iberia branch is a key hub for software development, cloud architecture, and public sector digitalization projects.

In Spain, T-Systems Iberia has offices in Madrid and Barcelona, and it is a significant employer of IT professionals, particularly in areas like SAP, cloud architecture, AI, and public administration solutions. The company is known for its stable, corporate environment, offering opportunities for international professionals to work on large-scale projects for both Spanish and European clients. Many roles require English, and some require German, reflecting the company's cross-border operations. T-Systems Iberia is an attractive option for those seeking a well-established, multinational IT employer with a strong focus on innovation and public sector work.

Industry
IT Services
Founded
2000
Employees
30,000–50,000
Headquarters
Frankfurt, Germany
In Spain
Madrid, Barcelona

Good to know if you are moving

  • T-Systems Iberia has offices in Madrid and Barcelona, offering opportunities in two of Spain's most dynamic tech hubs.
  • The company is part of Deutsche Telekom, providing access to a large international network and potential career mobility across Europe.
  • Many roles require or prefer German language skills, which can be an advantage for German-speaking professionals.
  • T-Systems Iberia works extensively with the Spanish public sector, offering stable, long-term projects.
  • The company supports relocation and offers a multicultural work environment with employees from various countries.

In their own words

About the company & team

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 global team, guided by respect, integrity, and a passion for doing better every day.

Additional information

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.

All open roles at T-Systems Iberia

Location

T-Systems Iberia · Madrid

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