Staff QA Software Engineer - GB

OpSec Security; Greater London; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

OpSec Security is seeking a Quality Assurance Engineer to partner with engineering teams and enhance product quality through testing strategies. This role demands at least 5 years of relevant experience, focusing on automation and quality engineering.

Candidates should have a Bachelor’s degree in a related field and be proficient in tools like Playwright, Cypress, and C#. The position promotes collaboration and a proactive approach to quality.

Qualifications

• Minimum 5+ years in Quality Assurance or related role.
• Strong background in test strategy, automation, and quality engineering.
• Experience with modern testing tools such as Playwright and Cypress.

Responsibilities

• Design for quality and prevent defects.
• Contribute hands-on to raise the quality across teams.
• Develop testing strategies for new features.

Skills

Test strategy

Automation

Quality engineering

C#

Playwright

Cypress

Postman

Collaboration tools

Education

Bachelor's degree in Computer Science or related field

Master's degree

Tools

Slack

Microsoft Teams

Jira

Job description

Job Category: Software Development and Engineering

Requisition Number: STAFF001821

• Full-Time

Locations

Showing 1 location

London, SE18QW, GBR

Description

About the job

As a partner to businesses and governments, Crane Authentication offers expertise and cutting‑edge innovations that protect and enhance products, secure identities, safeguard revenues and enforce compliance. Customers from different business sectors and levels of government trust our team of 1,250 people for their expertise in R&D, security design, engineering and data‑driven insights. We are an integral part of Crane NXT, a $2 billion dollar business with over 5,000 associates.

Essential Functions Performed by the Position

• Partner with Engineering and Tech Leads to design for quality. Your focus is on preventing defects rather than detecting them later in the life cycle
• Review test coverage across all layers (unit, integration, contracts and end‑to‑end) to ensure meaningful, maintainable tests
• Contribute hands‑on to raise the Quality bar across multiple teams
• Comfortable and experienced setting up and amending frameworks and CI/CD pipelines
• Collaborate with Delivery and Product to define ‘what good looks like’
• Own quality metrics
• Lead initiatives around quality tooling, test data, environments, performance and security testing
• Develop and articulate comprehensive testing strategies for new features, products, or system enhancements.
• Apply design thinking principles to testing—understanding user needs, identifying potential pain points, and ensuring end‑to‑end quality.
• Identify and document edge cases, with a focus on system scalability, performance, and maintainability.
• Collaborate closely with development and product teams to ensure early defect detection and smooth release cycles
• Utilize and maintain QA tooling and automation frameworks to enhance testing coverage and efficiency
• Track and report on quality metrics, demonstrating measurable improvements such as reduced defect leakage, faster release cycles, and improved customer satisfaction

Position Qualifications

Education:

Bachelor’s degree in computer science, Engineering, Information Technology, or a related field. A master’s degree is a plus.

Experience:

• Minimum of 5+ years of hands‑on experience in Quality Assurance or a related role, with a strong background in test strategy, automation, and quality engineering across complex systems
• Strong expertise in modern testing tools and technologies, including Playwright, Cypress, Postman, and C#.
• Exposure to performance and security testing is a plus
• Experience with pair programming is preferred, demonstrating collaborative development and testing practices
• Proficient in using collaboration and project management tools such as Slack, Microsoft Teams, and Jira

Certifications/Licenses:

• Any professional testing certification is a plus
• Possess effective communication skills in English, both written and verbal (for non‑English speaking countries)

Knowledge, Skills, and Abilities

• You are technically astute and comfortable writing code
• You see yourself as a partner in Engineering, not a gatekeeper
• You’re curious, pragmatic and proactive in raising the quality bar across teams
• You are experienced in coaching and mentoring QAs and Engineers alike in quality practices

We value diversity at our company. Everyone who applies with the qualifications will receive consideration for employment without regard to: age, colour, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by law.