Senior Core Engineer

Samsung Electronics

Senior MCX Core Engineer testing and troubleshooting Samsung’s mission-critical voice, video, and data network solutions. Leading deployments, upgrades, integrations, and technical investigations across LTE and TETRA architectures.

Posted 8/4/2026full-timeReading • 🇬🇧 United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in 4G/5G Core and IMS network technologies, with a focus on Mission Critical Voice, Video, and Data services. Capable of leading performance analysis, troubleshooting, and managing complex network issues while ensuring effective collaboration with stakeholders.

Highest-signal resume keywords

4G/5G Core ExpertiseIMS and VoLTE ArchitectureWireshark TracingLoad-Testing Tools (IXIA)End-to-End Troubleshooting

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

4G/5G CoreIMS Network TechnologiesVoLTE TestingWiresharkSIPRTPRTCPDiameterLoad-TestingIP Networking

Soft Skills

Strong Presentation SkillsInterpersonal SkillsHighly MotivatedSelf-DrivenAbility to Collaborate

Tools & Technologies

JiraServiceNowVMwareVNF-Based Core NodesMOPs

Certifications & Qualifications

Engineering DegreeSC Clearance

Industry Keywords

Mission Critical Voice3GPP SpecificationsNISTOWASPGCFUK TSALTETETRANetwork TroubleshootingProject Management

Tech Stack

Tools & technologies

ServiceNowVMware

About the role

Key responsibilities & impact

Provide daily subject-matter-expert support for defect triage calls and resolve complex network issues
Manage trouble tickets through successful resolution, supplying information for R&D investigation and implementing recommendations
Lead deep-dive analytics and fault investigations for feature and performance test cases within SLAs
Peer-review and release daily test progress reports, highlighting risks to project timelines and deliverables
Lead performance analysis and troubleshooting of the MCX Core
Validate test cases, upgrade procedures, troubleshooting guides, and product documentation
Provide training and development support for MCX engineers
Plan and execute software upgrades and regression testing on VNF-based Core nodes running on VMware
Update MOPs and deployment materials to support consistent successful deployments
Provide technical support for integration with Samsung MCX nodes, including analysis, feedback, and logs for third parties
Define MCX Core test strategies and test plans for network elements and software release phases
Lead and develop members of a small test and operations team
Collaborate with PMO functions to provide project updates and manage risks
Build effective working relationships with customers and partners
Serve as SME for in-depth technical investigations across end-to-end LTE and TETRA architectures

Requirements

What you’ll need

Comprehensive knowledge of 4G/5G Core and IMS network technologies, especially Mission Critical Voice, Video, and Data features
Extensive expertise in IMS and VoLTE architecture, interfaces, and protocols
Hands-on experience testing Mission Critical Voice, Video, and Data services on commercial VoLTE networks
Expertise with Wireshark tracing, system log analysis, SIP, RTP, RTCP, and Diameter interactions
Experience with load-testing tools such as IXIA
Experience with ticketing applications such as Jira and ServiceNow
OS lifecycle management for VM deployments on VMware, including greenfield deployments and upgrades
End-to-end troubleshooting for LTE and TETRA networks and call flows
In-depth knowledge of 3GPP specifications and Mission Critical features
Extensive expertise in IP networking, routing protocols, and network troubleshooting
Excellent written and spoken English
Engineering degree or equivalent experience in Computer Science, Electronics, Telecoms, or a related field
Awareness of NIST, OWASP, GCF, and UK TSA requirements and their impact on secure network delivery and testing
Willingness to support an on-call rota as required
Ability to work for extended periods at customer locations
Existing SC clearance is ideal, or must be obtained once hired
Ability to maintain high standards of work and adapt to a dynamic working environment
Strong presentation and interpersonal skills
Highly motivated and self-driven, with ability to lead and develop a small team
Ability to execute complex test activities against project and test-plan milestones
Ability to collaborate with PMO functions and manage project risks
Ability to develop effective customer and partner relationships

Benefits

Comp & perks

Bonus scheme linked to individual, team and company performance
Car allowance
Pension contribution
Three volunteering days each year
25 days holiday plus bank holidays
Additional day off for your birthday
Discounts on a wide range of Samsung products
Discount shopping portal
Up to 20 (pro-rata) Partner Absence days per calendar year to be used in times of need
Reasonable accommodation for individuals with disabilities
Partner Colleagues may be eligible for statutory sick-pay payments from their payroll agency