Senior MCX Core Engineer

Samsung Electronics UK; Reading; On-site; GBP 75,000 - 100,000; Full time

Benefits offered by this job

Bonus scheme

Car allowance

Pension contribution

Three volunteering days each year

Birthday day off

Discounts on Samsung products

Discount shopping portal

Partner Absence days

Job summary

Samsung Electronics UK is seeking a Senior MCX Engineer to lead testing, performance, and operations for MCX Core within the Samsung Networks Europe team. You will drive defect triage, analytics, and regression testing across VMware-based Core nodes, while collaborating with cross-functional teams to meet SLAs and project milestones.

The role requires deep expertise in 4G/5G Core, IMS/VoLTE, and experience with tools like Wireshark, IXIA, and Jira/ServiceNow.

Qualifications

• Background in 4G/5G Core, IMS, and MCPTX features.
• Experience testing Mission Critical Voice/Video/Data services on VoLTE networks.
• Experience with network diagnostic tools and ticketing systems (Wireshark, Jira, ServiceNow).
• VMware VM deployments and lifecycle management.

Responsibilities

• Provide daily SME support for defect triage to resolve complex networks issues.
• Manage trouble tickets and ensure R&D information is captured and used for fixes.
• Lead deep dive analytics and fault investigations of test cases within SLAs.
• Peer-Review and release daily test progress reports to show risks to timelines.
• Lead performance analysis and troubleshooting of the MCX Core.
• Plan sw upgrades and regression testing on VNF cores with clear MOPs.

Skills

4G/5G Core

IMS & VoLTE

Mission Critical (Voice/Video/Data)

English communication

On-call support

Education

Engineering degree or equivalent

Tools

Wireshark

SIP / RTP / RTCP

Diameter

IXIA

Jira / ServiceNow

VMware

Job description

Position Summary

Why join our team?

The role is located in the Samsung Networks Europe's (SNE) team of Mission Critical Support Services. The team is empowering our delivery of Public Service solutions in Europe with our market leading portfolio of products ranging from Device Clients, RAN, Core and MCPTX Application Services.

The Senior MCX Engineer sit across the Test and Delivery teams under the leadership of the Test and Service Delivery Manager and play a key role in SNEs mission as the team who lead the testing, performance and operational availabilty of our products, meeting customer expectations, contractual milestones and SLAs.

By joining us, you join a team of highly motivated technical specialists who are trusted to define and deliver our industy leading MCX solutions supported by a strong team of colleagues locally and in our Korean Headquarters.

Role And Responsibilities

Your key responsibilities

You will be a technical expert in IMS and Core technology and protocols (ideally MCX also) with a proven history in leading complex Core deployments from Design to Operations.

• Daily SME support for defect triage calls to resolve complex networks issues.
• Lifecycle management of trouble tickets to successful resolution, ensuring all information for R&D investigation is provided and recommendations implemented.
• Lead deep dive analytics and fault investigations of feature and performance test cases to provide resolutions within SLAs
• Peer-Review and release of daily test progress reports to ensure accuracy and visibility of any risks to defined project timeline or deliverables.
• Lead the performance analysis and troubleshooting of the MCX Core.
• Validation of all supporting test cases, upgrade procedures, trouble‑shooter guides and product documentation to facilitate consistent test execution.
• Provide training and development support for MCX engineers.
• Plan and execute sw upgrade and regression testing on VNF based Core nodes on VMware architecture providing updates MOPs and materials to ensure consistent successful deployments,
• Technical support for integration to Samsung MCX nodes providing analysis, feedback or logs to 3rd parties for their solution development or integration.
• Provide SME input to define the MCX Core Test Strategy and Test Plans for all network elements and sw releases phases.

What We Need For This Role

To be successful, you will possess the following skills and attributes:

• A comprehensive background knowledge in 4G/5G Core / IMS network technologies, in particular Mission Critical Voice/Video and Data features.
• Extensive expertise of IMS and VoLTE architecture, interfaces and protocols, ideally with hands on knowledge of testing Mission Critical Voice, Video and Data services when deployed on Commercial VoLTE networks
• Extensive knowledge of testing tools and diagnosis: Wireshark tracing, system log analysis of SIP, RTP, RTCP, Diameter interactions, Load testing tools (IXIA) and ticketing applications such as Jira and ServiceNow
• OS lifecycle management for VM deployments on VMware, greenfield deployment and upgrades
• Expertise in e2e 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 presentation and interpersonal skills with written and spoken English.
• Ability to maintain high standards or work and remain adaptable to changes in a dynamic working environment.
• You have an Engineering degree or equivalent experience in Computer Science, Electronics, Telecoms or a related field.
• Awareness of NIST, OWASP, GCF and UK TSA requirements and how they impact delivery and testing of secure networks
• Willing to support an on-call rota as required.
• Ability to work for extended periods at customer locations to support project activities
• Ideally with existing SC clearance or must gain once hired

What does success look like?

• Highly motivated and self driven to lead and develop members of a small team of test and operations experts.
• Ability to execute complex test activities to defined project and test plan milestones.
• Collaborate with PMO functions to deliver timely updates on project achievements and ensure any risks are categorised and resolved in the appropriate reports.
• Develop strong and effective working relationship with customers and partners.
• Be the SME for in‑depth technical investigation across E2E architectures for both LTE and TETRA networks.

Skills And Qualifications

Benefits of working at Samsung include

• Bonus scheme linked to individual, team and company performance
• Car allowance
• Pension contribution
• Three volunteering days each year
• Holiday - 25 days plus bank holidays and an additional day off for your birthday
• Access to discounts on a wide range of Samsung products
• Access to a discount shopping portal
• Partner Colleagues are not eligible for Samsung Enhanced Paid Sick Leave but may be eligible for statutory payments from their payroll agency
• Up to 20 (pro‑rata) Partner Absence days per calendar year to be used in times of need

A note on equal opportunities

We are an equal‑opportunity employer and value diversity at our Company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status or disability status.

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

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