Core Network Engineer (3/342)

Scripting Languages
2G/3G/4G Mobile Networks


💰 130 - 170 PLN/h B2B 

📍 Hybrid/Kraków

💼 Mid/Senior


  • Operations and maintenance of mobile network core functions to enable international roaming signaling, voice and messaging, or IPX services
  • Operations and maintenance of operations support tools
  • Implementation of changes, expansions, testing, and optimization
  • Automation and development of processes and routines to maintain network and support systems


  • Higher degree in Telecommunications and/or IT technology (M.Sc. is an advantage)
  • Knowledge of 2G/3G/4G/5G mobile core network architecture, including deep knowledge of at least one of the following functions STP, DRA, MGC, SBC, SMSC, SMS HUB, SEPP
  • Detailed knowledge of one or several of the following protocols such as SS7/SIGTRAN, SIP, SIP-I, RTP, H248, Diameter, GTP
  • Experience in operating mobile networks
  • Experience from one or several of the services we are providing (Roaming, Messaging, or Voice domain) and/or working with vendors such as Huawei, Oracle, Openmind networks, Polyester
  • Familiarity with scripting languages such as Python (use of API including system integration is an advantage)
  • Which cooperate well with others, share knowledge, experience, and information and support others in the pursuit of team goals
  • You have excellent knowledge of the English language, written and spoken


  • Accident and Health disability coverage (Lloyds)
  • Possibility to attend internal and external training
  • Relocation package (4500 PLN total value), paid in three installments (1500 PLN per month) in case your permanent presence in the office is mandatory, and you need to relocate from other city
  • Benefits: Extended medical care (over 2000 medical facilities in Poland, 80 in Kraków) for you and your family; Multisport Benefit card; life insurance
  • Remote work option

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Projekt prowadzi

Regina Pajor