E2E Tester (IMS / PaCO / SDM)

Capgemini Engineering; Lisboa; Hybrid; EUR 38,000 - 52,000; Full time

Benefits offered by this job

Health and life insurance

Hybrid work

Referral program with bonuses

Job summary

Capgemini Engineering in Lisbon seeks an experienced E2E Tester to validate end-to-end solutions in Telecom Core Network environments, focusing on IMS, PaCO, SDM and 5G Core domains. You will ensure service quality through testing, defect management, and collaboration with cross-functional teams.

The role requires strong troubleshooting, defect-tracking skills, and English fluency. Hybrid work and opportunities for training and international projects are offered.

Qualifications

• 3+ years of Telecom Core Network testing experience (IMS, SDM, PaCO, 5G Core).
• Strong knowledge of 2G/3G/4G/5G architectures, call flows, and procedures.
• Hands-on telecom protocol testing: HTTP2, SIP, MAP, Diameter.
• Experience with Wireshark for packet capture and log analysis.
• Familiar with cloud-native/virtualization: Kubernetes, Docker; Python scripting.

Responsibilities

• Execute end-to-end manual testing across IMS, PaCO, SDM, and 5G Core platforms.
• Troubleshoot and perform root-cause analysis of network issues.
• Log and manage defects using JIRA and QC/ALM; produce status reports.
• Understand test environments, system functionality, and business requirements.
• Create/maintain test cases based on project requirements; ensure delivery quality.

Skills

Troubleshooting

Root cause analysis

Defect management

Test tracking tools

JIRA

QC/ALM

English fluency

Python scripting

Education

Bachelor's degree in Computer Science/ Telecommunications/Engineering

Tools

Kubernetes

Docker

VNF deployments

Job description

CAPGEMINI ENGINEERING

At Capgemini Engineering, the world leader in engineering services, we bring together a global team of engineers, scientists, and architects to help the world’s most innovative companies unleash their potential. From autonomous cars to life-saving robots, our digital and software technology experts think outside the box as they provide unique R&D and engineering services across all industries. Join us for a career full of opportunities. Where you can make a difference. Where no two days are the same.

YOUR ROLE

As an E2E Tester, you will be responsible for validating end-to-end solutions within Telecom Core Network environments, with a particular focus on IMS, PaCO, SDM, and 5G Core domains. You will play a key role in ensuring service quality through comprehensive testing, defect management, troubleshooting, and close collaboration with technical teams and stakeholders.

Your Key Responsibilities Will Include

• Executing end-to-end manual testing activities across IMS, PaCO, SDM, and 5G Core platforms.
• Performing troubleshooting and root cause analysis of network and service issues.
• Conducting failure investigations and reporting defects using tools such as JIRA and Quality Center (QC).
• Developing a strong understanding of the test environment, system functionality, and business requirements.
• Creating and maintaining test cases based on project requirements.
• Logging, tracking, and managing defects throughout the testing lifecycle.
• Producing defect status reports and providing regular updates to stakeholders.
• Supporting defect resolution activities in collaboration with development, integration, and operations teams.
• Analyzing logs, traces, and network traffic to identify and resolve issues efficiently.
• Working closely with cross-functional teams to ensure successful test execution and delivery quality.

YOUR PROFILESolid troubleshooting, debugging, and root cause analysis capabilities.Experience with defect management and test tracking tools such as JIRA and QC/ALM.

• Bachelor's degree in Computer Science, Telecommunications, Engineering, or a related field.
• Minimum 3 years of experience in Telecom Core Network testing within IMS, SDM, PaCO, and/or 5G Core domains.
• Strong knowledge of 2G, 3G, 4G, and 5G network architectures, procedures, and call flows.Hands-on experience with telecom protocol testing, including:
• HTTP2
• SIP
• MAP
• Diameter
• Experience using Wireshark for packet capture and log analysis.Knowledge of cloud-native and virtualization technologies, including:
• Kubernetes
• Docker
• VNF deployments
• Python scripting
• Strong analytical mindset with attention to detail and quality.Excellent communication and collaboration skills.
• Ability to work effectively with multiple stakeholders and distributed teams.Fluent English communication skills, both written and spoken.

What You’ll Love About Working Here

• Join a multicultural and inclusive team environment.
• Enjoy a supportive atmosphere promoting work life balance.
• Hybrid work.
• Your career growth is central to our mission. Our array of career growth programs and diverse professionals are crafted to support you in exploring a world of opportunities.
• Access valuable training and certifications in cutting edge technologies.
• Engage in exciting national and international projects.
• Health and life insurance.
• Referral program with bonuses for talent recommendations.
• Great office locations.

About Capgemini

Capgemini is the business transformation partner for enterprises in the age of AI. We help organizations imagine and build an intelligent, sustainable future, combining AI, technology and human ingenuity to transform how they operate, innovate and grow. With unique end-to-end capabilities spanning strategy, technology, engineering and intelligent operations, we bring together deep industry expertise and market-leading capabilities in AI, cloud and data to turn ambition into measurable business outcomes at scale. Supported by a robust ecosystem of partners and nearly 60 years of expertise, Capgemini is a responsible and diverse global organization of over 410,000 team members in more than 50 countries.