Core Network Signalling Engineer - 5G & 4G

• Vendors management: technical meetings organization and leading, open issues tracking, technical aspects negotiations like new features (eg. defining feature requests), finding solutions of discovered issues, new deployments design.
• Taking part in working groups: e2e design WG, cLab design WG, 5G roaming design WG, migration from legacy VNF to CNF
• Technical leading of signalling projects in international Lab environment: 5G SEPP (including integration with 5G core, testing tools), DRA in cnf design and deployment, etc.
• Close cooperation and supporting DT in the area of signalling technology (4G and 5G)
• Providing solutions on the group level in testing and platform automation area focus on Kubernetes

• Experience as Telco System Engineer or Designer in Mobile Core domain
• Fluency in English (spoken & written)
• 4G signalling: Diameter (DRA, DEA, SFW)
• 5G signalling: HTTP/2 (SEPP, SCP, SFW)
• Knowledge of VNF/CNF, K8s platforms, encryption, interworking, automation, integrations
• Overview of mobile core network architecture
• Cordination and communication skills
• Ability to lead cross‑functional teams
• Proactive problem‑solving attitude and support on international level

What We Offer

• Friendly and open work environment.
• Competitive salary and additional benefits.
• Strong development opportunities within T-Mobile/T-Hub.
• Access to training platforms and modern technologies

No dress code - you can just be yourself here

Medical, sport and life insurance packages at preferential terms

Access to our products and services at preferential terms

Employment contract-based cooperation

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

A fair approach to all people who want to join T Hub means that:

• The recruitment process is transparent;
• Our recruitment decision is based solely on an assessment of your skills (your race, skin color, sexual orientation, gender identity, origin, disability, political view, appearance, or religion will not have any influence on he outcome of the process):
• Regardless of the outcome of the process, you will get detailed feedback.

Our screening meeting will last about 20-30 minutes. We will ask you about our areas of interest and will be happy to field any questions you may have.

There’s nothing for you to do at this stage — we’ll take care of everything. During this time we process all the information we've gathered during the screening process and dig deeper into your CV.

We will invite you to one or two project meetings to confirm that we have a ‘perfect match'. The meetings may last between 30 minutes and 90 minutes, during which time we will talk to you about mutual expectations and the vision for our collaboration. You will also most likely meet your future supervisor and your teammate during this time.

At this stage, we will have decided that you are the person we want to develop our projects with. We will then come back to you with an offer of collaboration, hoping for your "yes". If for some reason, we are unable to offer you a position in our team, you will certainly receive feedback from us explaining our decision.