IMS Core Engineer

March Personnel; England; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading recruitment agency in the United Kingdom is seeking an IMS Core Engineer responsible for testing and validating mission-critical communication solutions. You'll provide technical expertise, define and execute testing strategies, and support integration environments. The ideal candidate has a strong background in IMS technologies and experience with LTE testing tools. This role offers generous benefits including holiday entitlement and staff discounts. Flexibility and willingness to travel are essential.

Benefits

Generous holiday entitlement

Staff sales discount

Subsidised staff restaurant

Qualifications

• Strong background in IMS Core technologies.
• Hands-on experience with IMS and VoLTE architecture.
• Flexibility to support on-call working and travel.

Responsibilities

• Provide technical expertise in IMS Core and MCX.
• Define and execute various testing strategies.
• Track test progress and maintain detailed reports.

Skills

IMS Core technologies

IMS Voice, Video, and Data services

LTE testing tools (Wireshark, IXIA, etc.)

Analytical and troubleshooting skills

Communication skills

Education

Degree in Computer Science or Telecommunications

Tools

Wireshark

Jira

Putty

Job description

Position: IMS Core Engineer

Location: Reading and customer offices as required

Salary: On Application

Duration: Ongoing

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

Overview of an 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 an 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 an 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.

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.
• 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.

Consultant - Charlie Shepherd