ACS Security Engineer - AI Calling

Project 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 Voice & Messaging (T-VM) organizational unit (Tribe) within Deutsche Telekom Technik GmbH bears overall responsibility for all voice and messaging platforms in the fixed and mobile networks of Deutsche Telekom Technik throughout their lifecycle. The platforms managed by T-VM form the basis for a large part of Telekom Deutschland's core business; therefore, our mission is to simultaneously ensure the success-critical factors of stability, quality, innovation, and efficiency. The ACS Squad (Announcement-, Control & Supportsystems) is responsible for the full lifecycle of critical IMS components within DT Technik.

Activity description and concrete tasks:

IMS-MRF (Media Resource Function) deployed on Kubernetes

OneiDNS, a cloud-native DNS service for all IMS nodes in fixed and mobile networks, deployed on Kubernetes

VoIP Support Systems, a VMware-based application landscape within the IMS fixed network provisioning chain

We work as a DevOps team, taking full responsibility from design and engineering to deployment and operation.

One of our next major challenges is the development of a new AI Calling system, built on DT Technik’s CaaS Kubernetes platform, enabling real-time speech processing and translation within IMS call flows.

To support us on this journey, we are looking for a motivated and technically strong colleague to strengthen our team.