> Markdown version of [/jobs/ext/1596317-integration-expert-for-enterprise-core-services](https://www.wearedevelopers.com/jobs/ext/1596317-integration-expert-for-enterprise-core-services). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Integration Expert for Enterprise Core Services - **Company:** T-Systems Iberia - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** 4G (Telecommunication), Agile Methodology, Automation of Tests, Business Process Modeling, Cloud Computing, Computer Programming, Data as a Services, IPv4, IPv6, Systems Integration, Wireless Networks, Scripting, Gitlab, Kubernetes, Restful APIs, Jenkins, Artifactory, Microservices - **Published:** July 6, 2026 - **Apply:** https://es.trabajo.org/oferta-5354-db03c410847062fa3f9df8885318ddd3 ## About the Role 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 requirements - 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). What do we offer you? Work environment & flexibility - International, dynamic and collaborative environment - T-Social: social initiatives (sports, community, health, ...) - Customized training: access to Coursera to learn whatever you want, whenever you want - Weekly language classes (English, Spanish & German) - International Mentoring Sessions & Experience Days - 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 J-18808-Ljbffr ## Description 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 Must-have requirements - In-depth understanding of mobile core network components, including their ## Related Videos - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) - [IP Authentication: A Tale of Performance Pitfalls and Challenges in Prod](https://www.wearedevelopers.com/videos/1413-ip-authentication-a-tale-of-performance-pitfalls-and-challenges-in-prod) - [IoT: The road to sustainability](https://www.wearedevelopers.com/videos/557-iot-the-road-to-sustainability) - [WeAreDevelopers LIVE - Modern DevOps for IoT Devices and More](https://www.wearedevelopers.com/videos/1805-wearedevelopers-live-modern-devops-for-iot-devices-and-more) - [Enabling automated 1-click customer deployments with built-in quality and security](https://www.wearedevelopers.com/videos/83-enabling-automated-1-click-customer-deployments-with-built-in-quality-and-security) - [Migrating half a million users to a new payment service provider](https://www.wearedevelopers.com/videos/730-migrating-half-a-million-users-to-a-new-payment-service-provider) ## Related Articles - [Spanish Business Culture and Etiquette](https://www.wearedevelopers.com/magazine/353-spanish-business-culture-and-etiquette) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Finding IT & Technology English-speaking Jobs in Germany ](https://www.wearedevelopers.com/magazine/446-finding-it-technology-english-speaking-jobs-in-germany) - [5 Best Emerging Tech Cities in Europe](https://www.wearedevelopers.com/magazine/361-5-best-emerging-tech-cities-in-europe) - [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies)