Manual Test Engineer - Telecom

Capgemini Engineering; Reading; Hybrid; GBP 52,000 - 76,000; Full time

Job summary

Capgemini Engineering is seeking a Telecom Test Engineer with hands-on experience in the Mobile Data Core domain to join our testing and validation team in Reading. You will validate 4G LTE EPC and 5G Core functions and ensure end-to-end performance and reliability.

You will design and execute test cases, analyze protocols, troubleshoot issues, and collaborate with development, SI, and operations. The role requires 3–8 years telecom testing and a Bachelor's degree in a related field.

Qualifications

• Bachelor's degree in Electronics & Communication Engineering, Telecommunications, Computer Science, Information Technology, or a related field.
• 3–8 years of experience in Telecom Testing with a focus on Data Core networks.
• Strong understanding of LTE EPC and 5G Core architecture.

Responsibilities

• Validating 4G LTE EPC and 5G Core network functions
• Ensuring end-to-end functionality, performance, interoperability, and reliability of packet core solutions
• Designing and executing test cases, analyzing network protocols, troubleshooting issues
• Collaborating with development, system integration, and operations teams.

Skills

Telecom testing

4G LTE EPC

5G Core

Test case design

Network protocol analysis

Python

Linux

Automation scripting

Interoperability testing

Collaboration

Education

Bachelor's degree in Electronics & Communication Engineering, Telecommunications, Computer Science, Information Technology, or related field

Tools

Docker

Kubernetes

Jenkins

GitLab CI

GitHub Actions

Postman

REST testing

Job description

We are looking for a Telecom Test Engineer with experience in the Mobile Data Core domain to join our testing and validation team.

In this role you will play a key role in:

• Validating 4G LTE EPC and 5G Core network functions
• Ensuring end‑to‑end functionality, performance, interoperability, and reliability of packet core solutions
• Designing and executing test cases, analyzing network protocols, troubleshooting issues
• Collaborating with development, system integration, and operations teams.

Your profile

Required Qualifications and Experience

• Bachelor's degree in Electronics & Communication Engineering, Telecommunications, Computer Science, Information Technology, or a related field.
• 3–8 years of experience in Telecom Testing with a focus on Data Core networks.
• Strong understanding of LTE EPC and 5G Core architecture.

Preferred Technical Skills

• Traffic generation tools such as Spirent, Jmeter.
• Test automation using Python, Robot Framework, PyTest, or Shell scripting.
• Linux/Unix administration, SQL and basic database knowledge.
• Docker and Kubernetes, OpenShift or VMware virtualization platforms.
• CI/CD tools such as Jenkins, GitLab CI, or GitHub Actions.
• API testing using Postman or REST clients.
• Familiarity with Prometheus, Grafana, and ELK for monitoring and log analysis, virtualization and cloud-native telecom environments.
• Strong understanding of LTE EPC and 5G Core architecture.
• Good understanding of mobility procedures, bearer management, QoS, roaming, and subscriber lifecycle management.

Desired Knowledge

• 3GPP specifications for LTE and 5G Core, Network slicing, Service-Based Architecture (SBA).
• VoLTE and VoNR call flows, Charging functions (OCS/CHF), Policy control (PCRF/PCF).
• Security and authentication procedures (AKA, EAP-AKA'). Roaming and interworking scenarios. High Availability (HA) and Disaster Recovery (DR) testing.

Preferred Certifications

• 5G Core or LTE Certification.
• Red Hat Certified System Administrator (RHCSA).
• AWS, Azure, or Google Cloud certifications (preferred).

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.