T Hub - Voice Core System Engineer

Mobile

T Hub - Voice Core System Engineer

Mobile
Full-time
Permanent
Mid
Hybrid

Tech stack

    Networking

    advanced

    LTE

    advanced

    5G

    advanced

    Troubleshooting

    regular

    Testing

    regular

    Cloud

    nice to have

Job description

WHAT TASKS AWAIT YOU?

  • Work on architecture and design of innovative voice systems as part of enterprise-wide telecommunications infrastructure

  • Prepare detailed technical documentation and test plans

  • Work as the main technical representative for major projects and competence areas

  • Drive the technical assessment, solution assurance, and troubleshooting of Mobile Voice networks

  • Be ready to define and capture business requirements, translating them into technical solutions for Mobile Voice (IMS, VoLTE, VoNR, etc.)- Oversee planning, implementation, and integration of voice services

  • System configuration testing and introduction

  • Manage project timelines, including budgets, risks, progress, and team performance, ensuring all deliverables meet scope and quality standards

 

WHAT SKILLS WILL BE APPRECIATED?

  • Minimum 4-5 years of relevant experience in mobile networks (CS, LTE, IMS, VoLTE, 5G, signalling)

  • Master's degree in Electronic/Telecommunications Engineering or related field

  • Knowledge of voice network architectures, protocols, signalling

  • Troubleshooting, testing, and performance monitoring skills

  • Knowledge of project management methodologies and tools will be an asset

  • Cloud infrastructure and automation skills would be assets

  • Knowledge of English at B2+ level

 


OUR OFFER FOR YOU

Technology is the heartbeat that connects us across borders! Deutsche Telekom's Technology Hub (T Hub) is part of the Technology Delivery International (TDI). Our highly international teams located across Europe deliver best-in-class cloud, network and services technologies that win our customers' hearts! We work topic-driven and skill-based. That is why we are a chapter-based organization with a clear focus on the development of our people, while driving the delivery of TDI's products and services in tribes for Deutsche Telekom's operations in different countries.


Team Members of the T Hub in TDI are also part of T Hub in T-Mobile Polska S.A.

 

Benefits

  • No dress code - you can just be yourself here

  • Medical, sport and life insurance packages at preferential terms

  • Access to: Percipio, Coursera, Rodos learning platforms

  • Access to our products and services at preferential terms

  • Employment contract-based cooperation

  • Know Talent - receive training or financial bonus for recommending new employees

Published: 12.09.2025

Meet the company

T-Mobile Polska S.A.

Jesteśmy firmą technologiczną i tworzymy innowacyjne rozwiązania. Udostępniamy na rynku 5G, oferujemy najlepsze usługi mobilne, a dzięki wielu Data Center zapewniamy liczne usługi ICT. Oferujemy usługi z zakresu rozwiązań cloud oraz cybersecurity.

Company profile
Office location

T Hub - Voice Core System Engineer

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T Hub - Voice Core System Engineer

-, Warszawa

T-Mobile Polska S.A.

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