MCX Senior Core Engineer

March Personnel; Reading; On-site; GBP 70,000 - 95,000; Full time

Benefits offered by this job

Generous holiday entitlement

Staff discounts

Pension auto-enrolment

Shuttle bus service

Job summary

March Recruitment is seeking an MCX Senior Core Engineer to provide technical leadership across MCX, 4G/5G Core and IMS. You will support design through operations, collaborating with R&D, customers and partners to ensure secure, reliable mission-critical solutions and meet testing requirements.

Responsibilities include defect triage, end-to-end testing, integrations, and contributing to test strategies and documentation. Willingness to travel to customer locations is required.

Qualifications

• Irrefutably strong experience across 4G/5G Core, IMS, VoLTE and MCX.
• Experience with testing strategies, performance and end-to-end testing.

Responsibilities

• Provide SME support for defect triage, complex fault investigations and troubleshooting across MCX Core.
• Lead functional, performance and end-to-end testing, including software upgrades and regression testing on VNF/VMware Core solutions.
• Manage test progress, technical reports, trouble tickets and risks, ensuring issues are resolved within SLAs.
• Support MCX Core integrations, providing technical analysis, logs and feedback to customers and partners.
• Contribute to MCX Core Test Strategies, Test Plans, documentation and the training of other engineers.

Skills

4G/5G Core

IMS

VoLTE

MCX

Troubleshooting

IP networking

Test automation

Education

Engineering degree

Tools

Wireshark

SIP

RTP

RTCP

Diameter

IXIA

Jira

ServiceNow

VMware

Job description

Position: MCX Senior Core Engineer

Location: Reading and customer offices as required

Salary: On Application

Duration: Ongoing

Hours: Monday–Friday, 9am–5:30pm

Overview of an MCX Senior Core Engineer

As an MCX Senior Core Engineer, you will provide technical expertise across IMS, 4G/5G Core, MCX, VoLTE, LTE and TETRA, supporting complex deployments from design through to operations. You’ll work closely with R&D, customers and partners to deliver secure, reliable mission-critical solutions while ensuring testing, performance and operational requirements are met.

Responsibilities of an MCX Senior Core Engineer

• Provide SME support for defect triage, complex fault investigations and troubleshooting across MCX Core.
• Lead functional, performance and end-to-end testing, including software upgrades and regression testing on VNF/VMware Core solutions.
• Manage test progress, technical reports, trouble tickets and risks, ensuring issues are resolved within agreed SLAs.
• Support MCX Core integrations, providing technical analysis, logs and feedback to customers, partners and third parties.
• Contribute to MCX Core Test Strategies, Test Plans, documentation and the training and development of other engineers.

Key Competencies of an MCX Senior Core Engineer

• Extensive experience across 4G/5G Core, IMS, VoLTE and Mission Critical Voice, Video and Data technologies.
• Strong knowledge of LTE, TETRA, 3GPP, IP networking, routing protocols and end-to-end network troubleshooting.
• Experience with Wireshark, SIP, RTP, RTCP, Diameter, IXIA, Jira and ServiceNow, alongside VMware-based Core deployments.
• Excellent analytical, technical, communication and leadership skills, with an Engineering or equivalent technical degree/experience.
• Awareness of NIST, OWASP, GCF and UK TSA requirements, with willingness to support on-call and travel to customer locations when required.

Benefits:

• Generous holiday entitlement, plus additional birthday leave and bank holidays.
• Staff sales discount, Reward Plus shopping discount, and volunteering days.
• Government pension auto-enrolment and pension contribution from 12 weeks.
• Subsidized staff restaurant, onsite parking, and free shuttle bus service (from Weybridge & Woking Station)

March Recruitment is an equal opportunities employer and complies with all relevant UK legislation.

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