SBC Senior System Engineer
Nokia
United States · Canada · India · Poland · Hungary
Posted on Dec 6, 2025
We are seeking a Senior SBC System Engineer / IMS Architect to join our R&D organization.
In this role, the selected candidate(s) will collaborate closely with Nokia R&D stakeholders—including the CTO, systems engineers and architects from other IMS products, product owners, and software engineers—as well as product line managers (PLMs) and customer support teams. The primary focus will be to define, design, and deliver SBC product capabilities tailored for both telecom and enterprise markets.
Advancing connectivity to secure a brighter world.
Nokia is a global leader in connectivity for the AI era. With expertise across fixed, mobile and transport networks, powered by the innovation of Nokia Bell Labs, we’re advancing connectivity to secure a brighter world.
About the Business Group
In Cloud and Network Services, as Nokia's growth engine, we create value for communication service providers and enterprise customers by leading the transition to cloud-native software and as-a-service delivery models. Our inclusive team of dreamers, doers and disruptors push the limits from impossible to possible.
Our recruitment process
We act inclusively and respect the uniqueness of people. Our employment decisions are made regardless of race, color, national or ethnic origin, religion, gender, sexual orientation, gender identity or expression, age, marital status, disability, protected veteran status or other characteristics protected by law. We are committed to a culture of inclusion built upon our core value of respect.
If you’re interested in this role but don’t meet every listed requirement, we still encourage you to apply. Unique backgrounds, perspectives, and experiences enrich our teams, and you may be just the right candidate for this or another opportunity.
The length of the recruitment process may vary depending on the specific role's requirements. We strive to ensure a smooth and inclusive experience for all candidates. Discover more about the recruitment process at Nokia.
Some of our benefits in Poland:
- Flexible working arrangements to support work–life balance
- Health and well-being support – private medical care for you and your family, life insurance, mental health programs, and employee resource groups
- A minimum of 90 days of Maternity and Paternity Leave based on eligibility
- Meal and lifestyle perks – Lunch Pass (monthly meal subsidy), Nokia Social Fund (sport card, cinema tickets, loans)
- Volunteering – two paid days per year for community or charitable activities
- Career growth & mobility – technical career path, job rotation, and domestic relocation support
- Continuous learning – mentorship programs, digital learning platforms and tools
- Annual bonus – based on individual and company performance
- Pension scheme (PPE) – available after 36 months of continuous employment
- Car benefit – the eligibility for a company car is based on employee’s job grade
We are seeking a Senior SBC System Engineer / IMS Architect to join our R&D organization.
You Have:
- Bachelor’s degree or equivalent experience is minimum required. Candidate´s with degree in computer science and / or telecom will be more relevant. Master’s degree is a plus.
- At least 8-10 years of professional experience including system / solutions engineering in IMS domain.
- Previous experience in software design, software development and/or testing in an R&D or similar organization.
- Good knowledge of Session Border Controller product(s) (control plane and media plane), their functions, components, interfaces.
- In-depth knowledge of IMS architecture and SBC applicable use cases.
- In-depth knowledge in VoIP and VoLTE architecture, entities, use cases.
- 3GPP and IETF standards knowledge applicable to SBC signaling & media services and networking.
- Experience and strong knowledge related to signaling plane: SIP, H.248, Lawful Interception, Diameter, HTTP(S), SIPREC, IPsec, TLS.
- Experience and strong knowledge related to media plane: H.248, MSRP(S), (S)RTP, RTCP, UDPTL, DTLS, TLS, DTMF, SIGTRAN, transcoding (audio, fax, video) including TrFO, MOS, DSP
It would be nice if you also had:
- Experience and strong knowledge related to OAM interfaces (CM, FM, PM): HTTP(S), SSH, (S)FTP, SNMP, NETCONF, RESTCONF.
- Good understanding of cloud, cloud native principles, microservices.
- Good knowledge of system performance, capacity and overload control aspects.
- Experience with Kubernetes, Openshift, AWS, Azure, Openstack, VMware clouds, Software Defined Networking.
- Data analytics skills, understanding of Machine Learning technologies & methods would be a plus.
- Definition of SBC product and/or IMS solution level requirements to respond to new market needs, with primary focus on Session Border Controller (signaling plane or media plane).
- Cooperation with Product Manager, Product Architect, Systems Engineers, Solution architects, CTO and Development Teams on defining product roadmap, feature / requirements definitions and backlog prioritization.
- Identification of product gaps and weaknesses toward standards & competition, addressing them into enhancements/ roadmap.
- Supporting design, implementation, test, sales and maintenance of product with the relevant teams.
- Documenting and presenting product capabilities internally and externally (documentation/ publications and presentations).
- Cross-sharing technology & product knowledge among various project team members.
- Representing Nokia R&D internally and externally.