Functional Test Engineer

Sepura; Cambridge; On-site; GBP 53,000 - 93,000; Full time

Benefits offered by this job

Travel expenses covered

Job summary

Sepura is seeking an experienced QA/Test Engineer to join our on-site team in Waterbeach, focused on validating LTE and TETRA products within embedded environments.

You will design and execute functional tests, develop automated scripts (Python/C#), and contribute to test planning within a cross-functional Agile team. Travel may be required, and a strong ownership mindset is essential for quality assurance.

Qualifications

• Bachelor's or Master's degree in computer science, electronics, telecommunications, or related field as required or preferred.
• ISTQB certification preferred but not mandatory.
• Full, clean driving license and travel willingness.
• Strong hands-on functional testing experience in Agile/Scrum environments.
• Experience testing complex or embedded systems (telecom, networking, radio, IoT, devices).
• Proficiency designing functional test cases using equivalence, boundary, state-based, and risk-based techniques.
• Owns test strategy development, maintenance, and execution.
• Ability to conduct exploratory testing and identify edge cases.
• Strong skills in log analysis, debugging, and collaboration with developers.
• Knowledge of test automation tools (Selenium, Robot Framework, Appium) and scripting (Python/C#).
• Familiarity with Jira, Jama, or Azure DevOps for test management.
• Knowledge of embedded/Linux/radio firmware logs for analysis.
• Understanding of telecom protocols, RF testing, and interfaces (TCP/IP, UDP, Serial, Bluetooth) is a plus.
• Experience with Git, Bitbucket or similar VCS.
• Ownership mindset, proactive risk identification and mitigation.
• Experience with CI/CD (GitHub Actions, Jenkins, GitLab CI) is a plus.
• Attention to detail and methodical testing approach.
• Excellent communication across technical and non-technical stakeholders.
• Comfortable in fast-paced, iterative Agile environments with a bias for continuous improvement.

Responsibilities

• Verify new features and changes within each sprint as part of a software scrum team.
• Review requirements, user stories, acceptance criteria to ensure clarity and testability.
• Contribute to test planning, execution, defect tracking, and stakeholder reporting.
• Design clear, thorough functional test cases and execute across embedded devices, software components, and APIs.
• Develop and execute automated test cases for LTE and TETRA products.
• Perform exploratory testing to uncover edge cases and usability issues.
• Validate fixes and assess regression risk after developer changes.
• Analyze logs, system traces, and debug output to support defect reporting.
• Collaborate with developers to investigate issues, interpret logs, and reproduce defects.
• Work with Product Owners to ensure acceptance criteria are complete and testable.
• Provide concise updates on test progress, risks, blockers, and readiness.

Skills

Functional testing

Exploratory testing

Log analysis

Test planning

Defect reporting

Automated test scripting (Python/C#)

Collaboration with developers

Ownership

Communication with stakeholders

Education

Bachelor's or Master's in CS/Electronics/Telecommunications

Tools

Appium

Azure

Bitbucket

Bluetooth

CI/CD

DevOps

Embedded

Firmware

Git

GitHub

GitLab

Hardware

IoT

ISTQB

JIRA

Jenkins

Linux

Python

Robot Framework

Security

Selenium

TCP/IP

Cloud

Job description

Salary: £53,000 - 93,000 per year

Requirements

• Were looking for a candidate with a Bachelors or Masters degree in computer science, electronics, telecommunications, or a related field.
• We prefer ISTQB certification, though it is not mandatory.
• The successful applicant must have a full, clean driving licence and their own car, as the role involves some travel.
• We require strong hands-on functional testing experience within Agile/Scrum software teams.
• We require experience testing complex or embedded systems, such as telecom, networking, radio, IoT, devices, or similar.
• Were looking for proficiency in designing functional test cases using structured techniques such as equivalence, boundary, state-based, and risk-based testing.
• The successful candidate will take responsibility for developing, maintaining, and owning the teams Test Strategy.
• We require the ability to conduct effective exploratory testing and identify edge cases.
• Were looking for confidence analysing logs, debugging issues, and collaborating directly with developers.
• We require strong defect-reporting skills, including clear reproduction steps, evidence, and impact details.
• We require knowledge of test automation tools such as Selenium, Robot Framework, or Appium, and experience writing automated test scripts in Python or C# for sprint-level testing.
• Were looking for familiarity with test management and issue-tracking tools such as Jira, Jama, or Azure DevOps.
• The successful candidate should be able to analyse logs from embedded systems, Linux, or radio firmware.
• Knowledge of protocol testing, RF testing, and communication interfaces such as TCP/IP, UDP, Serial, or Bluetooth is a plus.
• Were looking for experience using Git, Bitbucket, or similar version control systems.
• We value a strong sense of ownership and accountability, including reflecting on issues that reach customers and proactively working with the team to strengthen testing.
• Experience testing telecom protocols, embedded software, or RF-based devices is a plus.
• Exposure to CI/CD pipelines such as GitHub Actions, Jenkins, GitLab CI, or DevOps is a plus.
• Familiarity with Git, branching strategies, and code reviews related to automated tests is a plus.
• Experience with performance, soak, or reliability testing is beneficial but not essential.
• We value strong attention to detail and a methodical approach.
• The successful candidate should have excellent communication skills with technical and non-technical stakeholders.
• Were looking for someone collaborative who works effectively within cross-functional Agile teams.
• We value curiosity, proactivity, and a desire to uncover issues before they reach customers.
• The successful candidate should take ownership of quality and raise risks early.
• Were looking for someone adaptable and comfortable working in fast-paced, iterative environments.
• We value a passion for continuous improvement and personal development.

Responsibilities

• We expect you to work as part of a software scrum team, verifying new features and changes during each sprint.
• You will read and understand requirements documentation provided by our Product Definition and Product Strategy teams.
• You will review user stories, acceptance criteria, and specifications to ensure they are clear and testable.
• You will contribute to test planning, execution, defect tracking, and reporting to stakeholders.
• You will design clear, thorough, traceable functional test cases and execute them across embedded devices, software components, and APIs.
• You will develop and execute automated test cases for our LTE and TETRA products.
• You will perform exploratory testing to uncover unexpected behaviours, usability issues, and edge cases.
• You will validate fixes and confirm regression risk areas after developer changes.
• You will analyse logs, system traces, and debug output to support accurate defect reporting.
• You will participate in sprint planning, backlog refinement, daily stand-ups, sprint reviews, and retrospectives.
• You will collaborate closely with developers to investigate issues, interpret logs, and reproduce complex defects.
• You will work with Product Owners to ensure acceptance criteria are complete and testable.
• You will provide clear, concise updates on test progress, risks, blockers, and readiness.

Technologies

• Appium
• Azure
• BitBucket
• Bluetooth
• C#
• CI/CD
• DevOps
• Embedded
• Firmware
• Git
• GitHub
• GitLab
• Hardware
• IoT
• ISTQB
• Support
• JIRA
• Jenkins
• Linux
• Python
• Robot Framework
• Security
• Selenium
• TCP/IP
• Cloud

More

We develop complete TETRA and LTE communication solutions for customers across industries and markets worldwide, supporting users with critical communications challenges. This role is primarily on-site at our Waterbeach office, where electronics, hardware, mechanical, and software design, development, and testing teams work together in a collaborative environment that supports rapid learning and innovation. Travel expenses will be paid. The role may require Security Clearance in the future.

last updated 40 week of 2026