Senior SBC System Engineer / IMS Architect
Nokia
IT
United States
Posted on Nov 7, 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.
About Nokia
Join us in creating the technology that helps the world act together.
We are a B2B technology innovation leader, pioneering networks that sense, think and act™, putting the world’s people, machines and devices in sync to create a more sustainable, productive and accessible future.
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:
- Flexible and hybrid working schemes
- A minimum of 90 days of Maternity and Paternity Leave, with the option to return to work within a year following the birth or adoption of a child (based on eligibility)
- Life insurance to all employees to provide peace of mind and financial security
- Well-being programs to support your mental and physical health
- Opportunities to join and receive support from Nokia Employee Resource Groups (NERGs)
- Employee Growth Solutions to support your personalized career & skills development
- Diverse pool of Coaches & Mentors to whom you have easy access
- A learning environment which promotes personal growth and professional development - for your role and beyond
Nokia Cloud and Network Services, IP Telephony Applications R&D team is seeking for SBC Systems Engineer / IMS Architect to address growing business needs of Nokia Session Border Controller (SBC) product. The SBC is supported on Virtualized Network Function (including RMS) and Containerized Network Function platforms.
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.