Core Network Engineer

March Recruitment; Reading; On-site; GBP 50,000 - 70,000; Full time

Benefits offered by this job

Generous holiday entitlement

Onsite parking

Subsidised staff restaurant

Job summary

March Recruitment in Reading is seeking an IMS Core Engineer to join a specialist technical team. This role involves testing, validating, and supporting critical communication solutions to ensure performance and availability across Core, RAN, and Application layers.

The ideal candidate will have a strong background in IMS Core technologies and hands-on experience with IMS and VoLTE architecture. The position offers generous holiday entitlement and additional benefits such as a subsidised staff restaurant and parking.

Qualifications

• Strong background in IMS Core technologies, particularly IMS Voice, Video, and Data services.
• Hands‑on experience with IMS and VoLTE architecture and protocols.
• Flexibility to support on‑call working and travel to customer locations.

Responsibilities

• Provide technical expertise in IMS Core and MCX.
• Define and execute Functional testing to agreed project timelines.
• Perform end-to-end testing and root cause investigation.

Skills

IMS Core technologies

IMS and VoLTE architecture

LTE testing tools

Analytical skills

Troubleshooting

Education

Degree in Computer Science, Electronics, Telecommunications

Tools

Wireshark

Jira

Putty

Job description

Location: Reading and customer offices as required

Duration: Ongoing

Hours: Monday-Friday, 9am-5:30pm

Overview of a IMS Core Engineer

As an IMS Core Engineer, you’ll be part of a specialist technical team responsible for testing, validating, and supporting mission critical communication solutions. This role is key to ensuring the performance, availability, and reliability of IMS Core services across Core, RAN and Application layers. You’ll work closely with test, support, and delivery teams to ensure systems meet customer expectations, contractual milestones, and service level agreements.

Responsibilities of a IMS Core Engineer

• Provide technical expertise in IMS Core and MCX, supporting the definition and execution of test strategies for all network elements and software releases.
• Define and execute Functional, Performance, Accessibility, and Compatibility testing to agreed project timelines.
• Perform end-to-end testing, deep dive analysis, and root cause investigation across LTE and TETRA networks.
• Execute software upgrades, regression testing, and lifecycle testing on VNF-based Core nodes deployed on VMware architecture.
• Track test progress, manage defects, and maintain detailed test execution reports and performance logs.
• Support integration and client testing environments, providing technical analysis, logs, and feedback to internal teams and third parties.

Key competencies of a IMS Core Engineer

• Strong background in IMS Core technologies, particularly IMS Voice, Video, and Data services.
• Hands‑on experience with IMS and VoLTE architecture, interfaces, and protocols.
• Proficiency with LTE testing and analysis tools including Wireshark, SIP/RTP/RTCP/Diameter tracing, IXIA, Viavi, Spirent, XCAL, QXDM, Jira, Logcat, and Putty.
• Experience with VNF architecture deployments and software lifecycle testing on VMware platforms.
• In‑depth knowledge of 3GPP specifications and Mission Critical features.
• Excellent analytical, troubleshooting, and communication skills.
• Degree in Computer Science, Electronics, Telecommunications, or equivalent professional experience.
• Flexibility to support on‑call working and travel to customer locations as required.
• 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.
• Subsidised 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. Please note that by applying for this vacancy you accept March Recruitment’s Privacy Policy and GDPR Policy which can be found on our website and therefore give us consent to contact you.