Mobile Packet Core Engineer (Voice)

About the role

The Mobile Packet Core Engineer will join A1's Competence Delivery Center to operate, maintain, integrate and develop core network elements that enable voice services. You will work with modern mobile core technologies, internal engineering teams and external partners to ensure high availability and quality of voice communications.

Key responsibilities

• Operate, maintain and support mobile voice core network elements and related services.
• Ensure technical readiness, testing, acceptance and commissioning of core network equipment.
• Monitor network performance, troubleshoot voice‑core infrastructure and resolve incidents.
• Collaborate with equipment vendors and service providers for effective support.
• Contribute ideas for network and process optimisation and participate in on‑call support.
• Assist in implementing new technologies and services within the voice core environment.

Required profile

• Bachelor’s or Master’s degree in Telecommunications, Computer Engineering, IT or related field.
• At least 1 year of experience in telecommunications or network engineering.
• Strong analytical, problem‑solving and communication skills.
• Team‑oriented mindset with a customer‑service attitude.
• Fluent written and spoken English.

Required skills

• Understanding of telecom core network architecture and functionality.
• Knowledge of GSM, UMTS, LTE and VoLTE/IMS environments.
• Familiarity with telecom standards, signalling protocols and technologies.
• Experience with Linux and Windows operating systems.

What we offer

• Innovative technologies and modern working environment.
• Flexible working schedule with home‑office options.
• Extensive learning opportunities and career development.
• Attractive remuneration package and additional benefits such as free A1 services, health insurance, sports centre and family events.