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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on 5G and 4G signalling in an international environment and migration from VNF to CNF and Kubernetes. Responsibilities include vendor management, technical meetings, deployment design, and technical leadership in signalling projects. Key technologies are Diameter, HTTP/2, VNF, CNF, Kubernetes. Fluent English and telecom mobile core experience are required. The offer provides medical care, training, sports benefits, flexible working hours.
from: 29 June 2026
to: 29 July 2026
salary not specifiedcontract of employment (full-time)
Offer parameters
level:mid • senior
working mode:hybrid
Warszawa, Mokotów
Requirements
Operating system
Windows
Our requirements
- 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
Your responsibilities
- 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
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
Benefits
- sharing the costs of sports activities
- private medical care
- sharing the costs of foreign language classes
- sharing the costs of professional training & courses
- life insurance
- flexible working time
- corporate products and services at discounted prices
- integration events
- mobile phone available for private use
- no dress code
- parking space for employees
- extra social benefits
- sharing the costs of tickets to the movies, theater
- holiday funds
- birthday celebration
- sharing the costs of a streaming platform subscription
- employee referral program
- charity initiatives
- extra leave
- Benefit Platform
Recruitment stages
- 1.Let’s meet to better understand each other's expectations.
- 2.Hiring Manager will receive your application after meeting.
- 3.Technical meetings with the Hiring Manager and/or team.
- 4.Time to decide!
T-Mobile
Working at T-Mobile’s T Hub will offer you an unique and highly rewarding experience on IT market. As a leader in the telecommunications industry, T-Mobile not only provides a platform to hone your technical skills but also empowers you to be a catalyst for innovation. You'll have the opportunity to work at the forefront of cutting-edge technologies, from 5G to IoT and AI, shaping the future of connectivity. Our commitment to fostering a diverse and inclusive workplace means you'll collaborate with a wide range of talented professionals, learning and growing together. T-Mobile encourages a culture of continuous learning and development, offering mentorship and support to help you thrive in your career.
This is how we work
T Hub - Core Network Engineer (Signalling domain)
I apply to:
T-Mobile
Warszawa, Mokotów
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