E2E Tester - Remote

iTRTech Group; Braga; Remote; EUR 19,000 - 22,000; Full time

Job summary

iTRTech Group is seeking an experienced E2E Tester for IMS, PaCO and SDM in a remote Europe setup. The role combines hands-on manual testing, protocol analysis and debugging across 2G/3G/4G/5G call flows, with a focus on reliability and defect reporting.

You should have 3+ years in IMS/SDM/PaCO or 5G Core, English B2+, and be based in Europe. Knowledge of Wireshark, Kubernetes, Docker and Python is valued, as is ability to collaborate with cross‑functional teams and log defects in Jira or QC.

Qualifications

• 3+ years in IMS, SDM, PaCO or 5G Core domains.

Responsibilities

• Perform manual end-to-end testing across IMS, PaCO and SDM environments.
• Build understanding of test environment, network functionality and expected behaviours.
• Provide requirements and technical input for test case definition.
• Analyse test failures, investigate issues and support root‑cause identification.
• Use packet captures and logs to troubleshoot network and protocol issues.
• Log, track and report defects using Jira, QC or customer‑agreed tools.
• Produce defect reports and communicate status updates to stakeholders.
• Collaborate with cross‑functional teams to investigate defects and support their resolution.

Skills

IMS/SDM testing

5G Core

Manual testing

Protocol analysis

Debugging

Wireshark

Python

Kubernetes

Docker

Jira

Quality control

Education

Bachelor’s degree in Telecommunications/CS/IT/Engineering

Tools

Kubernetes

Docker

Python

Wireshark

Job description

E2E TESTER (IMS / PACO / SDM) (REMOTE EUROPE) Portuguese company hires for remote position

Location: Europe — candidates must already be based in Europe

Work Model: Remote

Language Requirements: English B2+ — spoken and written

Seniority: Mid-Level (3+ years)

Sector: Telecommunications

Rate Between €1700 - 2000 RV or unipessoal (gross value)

About The Opportunity

Help validate the services and network functions that support telecommunications connectivity. We are looking for an E2E Tester with experience in IMS, PaCO, SDM and 5G Core environments to support end-to-end testing and ensure reliable deliveries.

You will combine hands‑on manual testing with protocol analysis, debugging and troubleshooting, working closely with technical teams to investigate failures and track defects through resolution.

Key Responsibilities

• Perform manual end-to-end testing across IMS, PaCO and SDM environments.
• Build a clear understanding of the test environment, network functionality and expected behaviours.
• Provide requirements and technical input for test case definition.
• Analyse test failures, investigate issues and support root‑cause identification.
• Use packet captures and logs to troubleshoot network and protocol issues.
• Log, track and report defects using Jira, QC or customer‑agreed tools.
• Produce defect reports and communicate status updates to stakeholders.
• Collaborate with cross‑functional teams to investigate defects and support their resolution.

3+ years of relevant experience within IMS, SDM, PaCO or 5G domains, with strong knowledge of the technologies relevant to this role.

Advanced understanding of 2G, 3G, 4G and 5G networks and call flows.

Experience in protocol testing, including HTTP/2, SIP, MAP and Diameter.

Hands‑on experience in manual E2E testing, with strong debugging and failure analysis skills.

Experience with cloud environments, virtualisation and Virtual Network Function (VNF) deployments, using Kubernetes, Docker and Python.

Practical experience with Wireshark for packet capture analysis and troubleshooting.

Experience logging and tracking defects using Jira or QC.

Strong communication, knowledge‑sharing and training skills.

Ability to collaborate effectively with technical teams and stakeholders.

A bachelor's degree in Telecommunications, Computer Science, Information Technology, Engineering, or a related field.

English B2, spoken and written.

Currently based in Europe.

Preferred Experience

• Previous involvement in Nokia Core Network projects, particularly within IMS, PaCO or SDM environments.

Ideal Candidate Profile

You are a hands‑on telecom tester who understands how network components and protocols interact across an end‑to‑end service. You enjoy investigating complex failures, interpreting packet captures and turning technical findings into clear, actionable defect reports.

You bring a methodical approach to manual testing, strong attention to detail and the ability to work collaboratively with engineers and stakeholders. You are comfortable discussing call flows, troubleshooting cloud‑based network environments and sharing your knowledge with others.

Questions for Candidates

• Where in Europe are you currently based, and when would you be available to start?
• How many years of experience do you have in IMS, PaCO, SDM and 5G Core? Please specify your experience in each domain.
• Can you describe an end‑to‑end manual testing project you worked on and your responsibilities?
• Which 2G/3G/4G/5G call flows have you tested or troubleshot?
• What practical experience do you have testing HTTP/2, SIP, MAP and Diameter?
• How have you used Wireshark to investigate a network issue or identify the cause of a test failure?
• What experience do you have with cloud, virtualisation, VNF deployments, Kubernetes, Docker and Python?
• Which tools have you used to log, track and report defects? Have you worked with Jira or QC?
• Have you participated in Nokia Core Network projects? If so, which domains and activities were involved?
• What is your English proficiency level, and is the compensation range aligned with your expectations?