ACS Security Engineer - AI Calling (m/f/d)

T-Systems Iberia; España; On-site; PHP 50,000 - 70,000; Full time

Benefits offered by this job

Flexible compensation plan

Telemedicine

26+ vacation days

Access to Coursera courses

Job summary

T-Systems Iberia, located in the Philippines, is looking for an innovative engineer to join their Voice & Messaging team. You will work on cloud-native projects, including AI Calling systems, and take part in deployments across cutting-edge telecom environments.

The role promotes a collaborative and hybrid work model, along with comprehensive benefits such as flexible compensation plans and extensive vacation days.

Qualifications

• Good experience with cloud-native technologies and containerized environments.
• Strong proficiency with Containers and Kubernetes orchestration.
• Hands-on experience with IMS architectures and call flows.
• Experience designing and maintaining CI/CD pipelines using GitLab CI.
• Good knowledge of Python and Bash scripting languages.

Responsibilities

• Deploy and manage IMS-MRF on Kubernetes.
• Support VoIP systems in the IMS fixed network provisioning chain.
• Work in a DevOps team covering design, engineering, and operations.
• Develop a new AI Calling system for real-time speech processing.

Skills

Cloud-native technologies

Kubernetes orchestration

IMS architectures and call flows

CI/CD pipelines

Python scripting

Bash scripting

Real-time systems

Testing frameworks

Tools

Wireshark

Kubernetes (kubectl, Helm)

GitLab CI

Terraform

Python

Prometheus

Jira

Job description

Job 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.

• 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!

Project Description

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 life cycle. 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.

Responsibilities and Duties

• 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.

Qualifications

Must‑have requirements

• Good experience with cloud‑native technologies and containerized environments.
• Strong proficiency with Containers and Kubernetes orchestration.
• Hands‑on experience with IMS architectures and call flows (CSCFs, AS, MRF).
• Demonstrated experience designing and maintaining CI/CD pipelines (e.g., GitLab CI).
• Good knowledge of Python and Bash scripting languages.
• Structured troubleshooting methodology and root cause analysis capabilities.
• DevOps mindset with strong ownership mentality.
• Experience with real‑time systems and performance optimization in telecommunications environments.
• Familiarity with testing and validation frameworks for cloud‑native applications.

Nice‑to‑have requirements

• Understanding German would be helpful (optional).
• Experience with AI/ML integration in telecommunications or real‑time speech processing systems.
• Knowledge of Deutsche Telekom’s CaaS Kubernetes platform or similar proprietary cloud solutions.

Tools & Platforms

• SIP and Media debugging tools (Wireshark, sngrep).
• Kubernetes management (kubectl, Helm).
• CI/CD platforms (GitLab CI, Artifactory).
• Infrastructure as Code and automation tools (Terraform, AWX, FluxCD).
• Programming languages (Python, Bash).
• Observability and monitoring solutions (Prometheus, Grafana, ELK Stack).
• Agile collaboration tools (Jira, Confluence).

Additional Information

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!