Packet Core Engineer

PrimeIT is an international company with more than 18 years of experience delivering the best solutions in a wide range of services : Team-as-a-Service, Team Extension, Managed Services, Nearshore and Custom Software Development.

We operate in 3 main sectors – IT, Telecom & Engineering – and have a team of more than 2360 Primers involved in the development of projects all across the globe.

With 19 offices, 2 Talent Hubs (Brazil and Vietnam) and a presence in over 50 cities worldwide, we enhance our partners’ businesses with a different attitude based on the highest quality standards, the most advanced technology, and the best professionals in the sector.

We are looking for a Packet Core Engineer to join our team in a hybrid project based in Lisbon (2x / week)!

What are we looking for?

A degree in Telecommunications, Electronics, or Computer Engineering

At least 3 years of experience working with mobile networks (3G, 4G, 5G)

Good understanding of how telecom and IT networks work

Experience with mobile core network elements, like :

• AMF, MME, SGSN
• UPF, S-GW, P-GW, GGSN

Knowledge of key network protocols like GTP, DNS, Diameter, and

Familiarity with VoLTE (Voice over LTE)

Skills in analysing performance, solving problems, and improving systems

Experience with virtual environments (e.g., VMware, OpenStack, NFV)

Extra knowledge in DNS, AAA, PCRF is a plus

Experience using tools like Wireshark, NetAct, or U2000 is also a plus

Experience working with vendors like Ericsson, Nokia or Mavenir is a bonus

Fluent in Portuguese and English

Good communication skills and ability to work well in a team

What do we offer?

Integration into a global company with international projects

Involvement in high-impact, complex technology initiatives

Career progression and continuous development opportunities

Work within collaborative and experienced multidisciplinary teams

Hybrid working model in Lisbon – 2 days per week onsite

Send your CV to and take the next step in your career with us!