Senior Software Development Engineer in Test (SDET)

Southern Lights; Scotland; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading technology company in Scotland seeks a Senior SDET to design and deliver test automation. You will mentor developers, enhance CI/CD processes, and collaborate with teams to improve testing environments. The role requires strong JavaScript skills and experience with automation tools like Cypress and K6. Enjoy a culture of inclusion and opportunity at this innovative company.

Qualifications

• Proven experience in automation engineering.
• Strong skills in JavaScript.
• Hands-on experience with Cypress, Cucumber, and Gherkin.

Responsibilities

• Design and maintain robust automation frameworks.
• Drive CI/CD integration for automated testing.
• Write and execute performance tests.

Skills

Automation engineering

JavaScript

Cypress

Cucumber

CI/CD tools

Performance testing

JIRA

Tools

Cypress

GitLab

K6

Grafana

DataDog

Xray

Job description

Join a quality first engineering culture where automation drives everything. As our Senior SDET, you'll report to the Head of QA and lead the design and delivery of scalable, reliable test automation across platforms. You'll mentor developers, shape CI/CD processes, and champion best practices that raise the bar for quality across the board.

What you'll be doing

• Designing and maintaining robust automation frameworks
• Driving CI/CD integration for automated testing
• Writing and executing performance tests (K6/Grafana)
• Mentoring developers and guiding QA best practices
• Identifying automation opportunities across teams
• Collaborating with engineering and product to improve test environments and data
• Supporting adoption of automation tools and techniques

What we're looking for

We don't expect perfection, if you tick most of these boxes, we'd love to hear from you:

• Proven experience in automation engineering
• Strong JavaScript skills
• Hands-on with Cypress, Cucumber, Gherkin
• Familiar with CI/CD tools (ideally GitLab)
• Experience with performance testing tools (K6, Grafana)
• Comfortable with test management platforms (Xray)
• Skilled in log/metric analysis (DataDog a plus)
• Familiar with JIRA and defect tracking
• Bonus: Appium experience

Here at Southern Lights, we strive to create an inclusive environment where every employee feels valued and empowered to contribute fully. Our recruitment practices are designed to ensure that all candidates have an equal opportunity to succeed, regardless of their race, colour, ethnicity, gender, age, sexual orientation, gender identity, disability, religion, or socioeconomic background.