Core Network Engineer II

cubic3· Technology
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🌍 Remote📍 MadridFullTime

About this role

The Company

Cubic³ provides advanced software-defined vehicle solutions to over 200 countries around the world. Our powerfully smart connectivity enables leading automotive, agriculture, and transportation OEMs to deliver innovative new services and fully compliant in-vehicle experiences that customers desire, regardless of local market requirements.

We believe in leadership that supports empowerment and responsibility, while recognising and developing leadership qualities across Our Team. Together we bring out the best in each other. So, whether you’re interested in joining us as an individual contributor, manager, senior leader – or someone who aspires to growing into a leadership role – we look for people who are results focused, empathetic, visionary, empowering, and who ‘champion’ our cultures and values.

The Role

We are looking for an energetic, enthusiastic experienced Engineer who has direct working knowledge of Core Networks to include Circuit Switching, Packet Switching, VOLTE, HLR/HSS and messaging (SMS) and is committed to their work and should be comfortable working in a fast-paced, highly flexible environment. The role will be responsible for the support and expansion of a global core network. This is a great opportunity for an engineer with strong Telecoms experience to demonstrate their technical and organisational ability, working in a small team of experienced engineers at the cutting edge of IoT technologies.

In this role you will be:

  • Responsible for supporting the Cubic³ core network elements. Performing troubleshooting and analysis of network incidents.

  • Providing input and collaborating with other team members developing, implementing, integrating, and monitoring network team projects.

  • Expanding the network monitoring capability.

  • Ensuring consistent uptime of the core network.

  • Acting as a key point of contact for vendors and other Cubic³ teams.

  • Participating in knowledge transfer to and from fellow engineers.

Requirements:

  • Experience with 3GPP Network Elements: HLR/HSS, DRA, STP, SMSC, GMSC, IMS Core, PGW, OCS, PCRF, AAA

  • Good understanding of telecom protocols and corresponding interfaces: GTP (S8), Diameter (S6a, Gx, Gy, Rx, Cx, Sh), MAP, Radius, SMPP, SIP

  • Experience of implementing telecoms integrations.

  • Experience with Wireshark network analyser and scripting languages an advantage.

  • Minimum 5 years’ experience in telecoms Engineering or Degree in Computer/Telecoms Engineering.

  • Proven track record in working with small teams.

  • Demonstrated expertise in troubleshooting network issues.

  • Excellent documentation skills.

  • Desire to learn from and collaborate with peers.

  • Excellent spoken and written English.

  • Previous experience working to aggressive timelines essential.

  • Commitment to provide a high quality and professional service.

  • Ability to work unsupervised and take responsibility for the completion of tasks.

  • Ability to prioritise work tasks.

  • Adaptable and flexible in approach to work.

  • Effective problem-solving skills.

  • Availability to support out-of-hours work where required and on-call rota.

New hires at Cubic³ are required to work onsite five days a week during their six-month probation period to get to know the company, their team, and our ways of working. After probation, we offer a flexible arrangement of up to eight work-from-home days per month, provided it aligns with business needs and performance standards. This arrangement is not a given for all roles.

Cubic³ is an equal opportunities employer and committed to fostering a diverse and inclusive workplace.

Frequently Asked Questions

Is the salary disclosed for the Core Network Engineer II position at cubic3?
The salary for this Core Network Engineer II role at cubic3 is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Is the Core Network Engineer II job at cubic3 remote?
Yes, this Core Network Engineer II position at cubic3 is remote, with team members based in Madrid. You can work from home or anywhere in the supported regions.
Is the Core Network Engineer II role at cubic3 full-time or part-time?
This is listed as a FullTime position. It is posted as a Core Network Engineer II role in the Technology department at cubic3.
Which team or department does the Core Network Engineer II at cubic3 belong to?
This Core Network Engineer II position is part of the Technology department at cubic3. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Core Network Engineer II position at cubic3?
Click the "Apply Now" button on this page. You will be redirected to cubic3's official application portal hosted on ashby where you can submit your application directly.
When was the Core Network Engineer II job at cubic3 posted?
This Core Network Engineer II position at cubic3 was posted on Feb 18, 2026. Apply as soon as possible — early applications are often reviewed first.
Core Network Engineer II
cubic3
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