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Integration Expert for Enterprise Core Services

Hybrid in Madrid·Full-time·Added today (last checked 28 Oct)

T-Systems Iberia

87 open roles

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Our summary

Work mode: Hybrid, Madrid
Contract: Full-time
English: Required
Experience: 2+ years
Benefits: Private health insurance, flexible pay plan, meal vouchers

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Skills

Requirements

What we're looking for

In-depth understanding of mobile core network components, including their functions, procedures and processes, interfaces, and protocols in 4G enhanced packet core (4G ePC), 5G non-standalone core (5G NSA), and 5G standalone core (5G SA) networks and their interconnection with customer networks.
Several years of experience in integrating and testing of mobile services and CNF applications (ideally Mavenir products) in cloud-native environments.
Several years of experience in applying and programming test automation in cloud-native environments.
Good knowledge of tracing and protocol analysis in microservice architectures with REST APIs and modern security protocols in cloud-native environments.
Deep end-to-end understanding of the functionality and protocols of heterogeneous IPv4/IPv6 networks.
Hands-on experience with CI/CD pipelines using GitLab, shell or Python scripts, Jenkins, Artifactory, and other tools.
Hands-on experience in managing and configuring Kubernetes clusters.
Experience in classic and agile project management• Ability to work very independently as well as in teams.

Nice to have

Optional, but we expect applicants to be willing to participate in on-call duties and call-in procedures outside of normal office hours (approximately 5-7 weeks per person per year).

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

#BeHybrid

The role

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 Data Tribe (T-DAT) within the Services & Platforms (T-SP) division bears holistic responsibility for all data services in the fixed and mobile networks throughout their entire lifecycle.The Packet Core Supersquad/Enterprise Core Squad is responsible for our business customer services in our mobile core networks. In this position, you will integrate and test all necessary developments and adaptations to realize new customer and business requirements in our development labs and in our state-of-the-art cloud native 4G and 5G core networks.

What you'll do

Install and integrate all new developments, adaptations and configuration changes to implement new customer requirements in our mobile core network test laboratory
Use CI/CD-pipelines and test automation environments
Test and verify that all requirements are met correctly and completely
In case of failure, conduct root cause analyses, secure evidence and initiate corrections• programming and automating test cases
Improve implementations to optimize customer experience, reliability and efficiency• contribute to the design and implementation of automated CI/CD pipelines and test automation for cloud-native applications
Verify and improve high availability solutions and disaster recovery plans to ensure service stability and rapid recovery
Provide support for complex projects across development, quality assurance, and project planning, as well as assist with the implementation of new mobile core software releases
Collaborate closely with involved implementation teams to streamline processes, enhance software and system performance and apply innovative technologies and concepts

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