Why this job matters

Join a team helping to assure the quality, resilience and reliability of services that matter to the UK.

As a QA Engineer working on Mission Critical Services, you'll contribute to the delivery of high-quality technology solutions across complex operational environments. Working alongside software engineers, solution architects and operational stakeholders, you'll help ensure that solutions, platforms and services meet demanding standards before reaching customers and users.

We believe quality is built into products from the start rather than added at the end, and our QA Engineers play an active role throughout the engineering lifecycle.

This role offers exposure to a broad range of technologies, testing approaches and engineering challenges. Whether executing tests, improving quality processes, supporting automation initiatives or helping diagnose complex issues, you'll play an important role in maintaining the integrity of critical systems.

Note: This role requires eligibility for UK Developed Vetting (DV) clearance. As a result, applicants must typically be sole British citizens and have lived in the UK continuously for the previous 10 years, subject to UK Government vetting requirements.

What you’ll be doing

Depending on your skills, interests and experience, you may:

• Design, develop and execute testing activities that support the delivery of high-quality products and services.
• Create, maintain and improve test environments, test cases, test data and quality assurance processes across a range of technology environments.
• Identify, investigate and help resolve defects, working collaboratively with engineering and delivery teams.
• Support integration, regression, functional and non-functional testing activities throughout the delivery lifecycle.
• Contribute to automation and continuous improvement initiatives that enhance quality, efficiency and delivery confidence.
• Assess risks to quality and service performance, helping teams understand impacts and appropriate mitigations.
• Communicate clearly with technical and non-technical stakeholders regarding testing outcomes, quality concerns and recommendations.
• Share knowledge, promote engineering best practice and contribute to a culture of continuous learning and improvement.

No two careers in this space look identical —and that's part of what makes it interesting.

You might be a good fit if you're naturally curious about questions such as:

• How do you build confidence in technology that simply cannot fail? 
• How do you prove a complex service is ready for the real world? 
• What hidden risks exist inside large-scale technology environments? 
• How do engineering teams balance quality, reliability and delivery speed? 
• How can automation and human insight work together to improve outcomes? 
• How do you turn curiosity and problem-solving into meaningful impact? 
• How can I keep developing my skills while working on technology that truly matters? 

What does great quality engineering look like in the age of AI? You don't need to have all the answers already. We're looking for people with curiosity, enthusiasm and a willingness to learn.

Essential Skills

You don't need to be an expert in every area—we're looking for people who bring curiosity, potential and a genuine enthusiasm for technology and assurance.

• Experience working within software and/or system integration testing, quality engineering or assurance environments.
• Understanding of testing principles, methodologies and quality assurance practices.
• Experience identifying, documenting and managing defects through to resolution.
• Ability to analyse problems, investigate issues and communicate findings effectively.
• Experience collaborating with multidisciplinary teams to deliver quality outcomes.
• Strong written and verbal communication skills.
• Commitment to continuous improvement and engineering excellence.
• Eligibility and willingness to obtain and maintain DV security clearance.

Desirable Skills

These skills and experiences are helpful, but not required.

• Experience supporting automated testing approaches.
• Exposure to complex, large-scale or mission-critical technology environments.
• Understanding of integration and end-to-end testing practices.
• Experience contributing to process improvement initiatives.
• Knowledge of secure, regulated or highly assured delivery environments.
• Experience mentoring colleagues or supporting capability development. 

Our Package

When you join our team, you'll play a role in delivering work that makes a real difference across the UK. In return, you'll be rewarded with a market-leading Total Reward package that reflects the value of your skills and expertise. From structured technical progression and industry-recognised training to generous family support and flexible benefits, we're committed to helping our people succeed at every stage of their career journey.

• A structured Technical Progression Pathway to recognise and reward appropriate technical people.
• Competitive DV market aligned salaries, typically £37.5k to £110k
• Tiered role based DV allowance of up to £5k per annum paid monthly
• World-class training and development opportunities
• 10% on target bonus  
• Equal family leave:  receive 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate. It’s for all parents, no matter how your family is made up.
• Enhanced women’s health support: including help with menopause symptoms, cancer screenings, period care and more.
• BT Pension scheme, minimum 5% Employee contribution, BT contribution 10%.
• New BT Better Workplace working environments at strategic locations across the UK.
• Huge range of flexible benefits including an EV salary sacrifice, cycle to work, healthcare, season ticket loan, additional annual leave.
• On-call allowance (Depending on role requirements).
• Access to 100’s of retail discounts including the BT shop.
• 24/7 private virtual GP appointments for UK colleagues.
• Option to join BT Shares Saving schemes25 days annual leave (not including bank holidays), increasing with service.
• 2 weeks paid carer’s leave.
• Discounted broadband, mobile and TV packages.
• Enhanced life assurance of up to ten times base salary