Packet Core Test Engineer

Capgemini Engineering; Abingdon; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Disability confident employer

Digital learning access

Diversity networks

Job summary

Capgemini is seeking a Packet Core Test Engineer to assure the quality, stability, and readiness of the containerized Packet Core for live service deployment. You will test, validate, and integrate new software releases and design changes, identifying risks and collaborating with stakeholders and vendors to enable reliable delivery into operations.

The role requires hands-on testing with Docker/Kubernetes, knowledge of 5G/4G Packet Core components, and experience with networking protocols.

Qualifications

• Experience in Integration and/or Test for Mobile Telecoms Packet Core platforms (2G, 3G, 4G, 5G), preferably containerized (Docker, Kubernetes) and Cloud-native.
• Comprehensive knowledge of Packet Core components and functionality (SGSN, MME, SGW, PGW, EPDG, DNS, AMF, SMF, UPF).
• Hands-on testing, packet capture, and diagnostics tools such as Wireshark.
• Good understanding of Linux, container, and cloud-native technologies: Docker, Kubernetes, orchestration and automation.
• Relevant technical qualifications or certifications (e.g., degree in Engineering or related discipline, or Cisco CCNA-SP/Juniper equivalents).

Responsibilities

• Manage and support the acceptance and integration of software releases of Containerized Mobile Packet Core through the test cycle.
• Test Management, Risk Mitigation, Platform Validation and Stakeholder Communication

Skills

Containerized testing

Wireshark

Linux

Docker/Kubernetes

Test management

Education

Engineering degree or related discipline

Tools

Docker

Kubernetes

Infovista Ativa

Job description

Your role

We are looking for Packet Core Test Engineer iwho will be responsible for assuring the quality, stability, and readiness of the containerized Packet Core for deployment into live service. The role involves testing, validating, and integrating new software releases and design changes, identifying and mitigating risks, and working closely with stakeholders and vendors to enable a smooth, reliable delivery into operations.

• Manage and support the acceptance and integration of software releases of Containerized Mobile Packet Core through the test cycle.
• Test Management, Risk Mitigation, Platform Validation and Stakeholder Communication

Your profile

• Experience in Integration and/or Test for Mobile Telecoms Packet Core platforms (2G, 3G, 4G, 5G) — preferably Containerized (Docker, Kubernetes) and Cloud-native
• Comprehensive knowledge of Packet Core components and functionality (SGSN, MME, SGW, PGW, EPDG, DNS, AMF, SMF, UPF).
• Hands‑on experience with testing, packet capture, and diagnostics tools: Wireshark, Infovista Ativa or equivalents
• Good understanding of Linux, Container, and Cloud-native technologies: Docker, Kubernetes, orchestration, and automation.
• Relevant technical qualifications or certifications: (e.g., degree in Engineering or related discipline, or certifications such as Cisco CCNA‑SP or Juniper equivalents).

Proficiency In Networking Protocols And Procedures

• Core Signalling Protocols: GTPv1/v2, NGAP, Diameter, PFCP, SBI (including HTTP/2, REST/JSON, OpenAPI)
• Traffic and Transport: IP (IPv4/IPv6), UDP, TCP, SCTP, GRE
• Quality of Service and Policy: 5G QoS Flow, QFI, PCC (Policy and Charging Control), PCF, SMF, UPF policy enforcement
• Mobility and Session Procedures: Attach, Detach, Registration, Handover, Session Establishment, Modification, and Release (GTP, NGAP, PFCP messages)
• Security: IPsec, Encryption, Authentication, Security Associations, Certificates (TLS)
• Management and Orchestration: NETCONF, REST, YANG models, ETSI MANO, Kubernetes API, Docker, Container Network Interface (CNI)
• Other Supporting Protocols: DNS, DHCP, ARP, NTP, BGP, SFTP/FTP, SNMP
• Performance and Telemetry, Prometheus, Grafana, logging and tracing

Make it real - what does it mean for you?

• Open access to digital learning platforms
• Active employee networks promoting diversity, equity and inclusion like OutFront, CapAbility or Women@Capgemini

Capgemini Is Proud To Be a Disability Confident Employer (Level 2) Under The UK Government’s Disability Confident Scheme. As Part Of Our Commitment To Inclusive Recruitment, We Will Offer An Interview To All Candidates Who

• Declare they have a disability, and
• Meet the minimum essential criteria for the role.
• Please opt in during the application process.

Capgemini. Make it real.

Need to know

• All roles will require a level of security clearance; BPSS OR Security ClearanceOR Developed Vetting.
• This role requires 3 days/week office presence based in Reading.
• You can bring your whole self to work. At Capgemini building an inclusivefuture is part of everyday life and will be part of your working reality. We havebuilt a representative and welcoming environment, for everyone.

About Capgemini

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organisations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion.

Make it real | www.capgemini.com