Quality Assurance & Testing

Quality Engineered In, Not Inspected at the End

We build quality assurance into the fabric of your delivery programme, not bolt it on as a final gate. Our QA engineers design test strategies, build automation frameworks, execute performance and security testing, and establish the quality discipline that gives your organisation confidence to release frequently and safely.

Quality assurance and testing services
Release with confidence Automated testing, performance assurance, security validation, and quality governance across the delivery lifecycle.

Quality engineering

A production defect that reaches your customers costs 10-100x more to fix than one caught in development. The economics of quality are unambiguous.

Yet many organisations still treat testing as an afterthought: under-resourced, under-automated, and disconnected from engineering. SurreyTech takes a fundamentally different approach. We treat quality assurance as an engineering discipline, embedded in delivery from sprint one, with automation as the default and manual testing reserved for exploratory and usability scenarios where human judgement adds genuine value.

Our quality assurance practice

Our QA engineers are not manual testers following scripts. They are quality engineers who write code, design test architectures, build automation frameworks, and embed quality gates into CI/CD pipelines. They work alongside developers as equal partners in the delivery team, shifting testing left so that defects are caught at the earliest and cheapest point in the lifecycle.

We bring expertise across the full testing spectrum: functional automation, API testing, contract testing, performance engineering, security testing, accessibility validation, and visual regression testing. Every engagement includes a tailored test strategy that balances coverage, speed, and cost based on the risk profile of your application.

Testing tools & frameworks

Selenium / WebDriver Playwright Cypress JUnit / TestNG pytest Postman / Newman REST Assured Pact (contract testing) JMeter / Gatling k6 OWASP ZAP SonarQube BrowserStack
Core capabilities

Comprehensive quality assurance across every dimension of software quality.

Test strategy & governance

Risk-based test strategies that define what to test, how to test it, and when. We establish test governance frameworks with quality gates, defect triage processes, release readiness criteria, and quality metrics dashboards. Every strategy is tailored to the application's risk profile, regulatory requirements, and delivery cadence.

Test automation frameworks

Design and build sustainable automation frameworks using Playwright, Cypress, Selenium, and language-native frameworks. Our frameworks follow the test pyramid model: extensive unit tests, targeted integration tests, and focused end-to-end scenarios. We implement page object models, API-driven test setup, parallel execution, and CI integration that keeps feedback loops fast.

Performance testing

Load testing, stress testing, soak testing, and capacity planning using JMeter, Gatling, and k6. We design performance test scenarios from production traffic patterns, establish performance baselines, identify bottlenecks under load, and validate that SLAs are met before every release. Performance testing runs in CI pipelines, not as a one-off pre-launch activity.

Security testing

Dynamic application security testing (DAST) with OWASP ZAP and Burp Suite. Static application security testing (SAST) with SonarQube and Snyk. Dependency vulnerability scanning, secret detection, and security-focused code review. We integrate security testing into CI pipelines so that vulnerabilities are caught and remediated before they reach production.

API & contract testing

Comprehensive API testing with Postman, REST Assured, and custom frameworks. Consumer-driven contract testing with Pact to prevent integration failures between independently deployed services. We validate API behaviour, error handling, authentication, rate limiting, and backward compatibility with every change.

Test environment & test data management

Design and implement test environment strategies that eliminate the bottleneck of shared, unstable test environments. Infrastructure-as-code test environments, containerised test dependencies, synthetic test data generation, data masking for compliance, and environment-on-demand provisioning that enables parallel team execution without conflicts.

Quality metrics

Measuring what matters: quality indicators that drive better decisions.

  • Defect escape rate: percentage of defects found in production vs total defects
  • Automation coverage: percentage of regression scenarios covered by automated tests
  • Test execution time: pipeline feedback loop duration from commit to test results
  • Mean time to detect: average time between defect introduction and detection
  • Release confidence score: composite metric indicating readiness for production
  • Performance regression detection: automated comparison against established baselines
  • Security vulnerability age: time from detection to remediation
<1%Target defect escape rate
85%+Automation coverage target
<15 minCI pipeline feedback time
Delivery approach

Quality assurance embedded from day one, not added at the end.

  1. Test strategy design: Assess the application risk profile, regulatory requirements, and delivery cadence. Define the test strategy including test types, tooling, automation approach, environment strategy, and quality gates.
  2. Framework build: Implement the automation framework, integrate with CI/CD pipelines, establish test data management, and create initial test suites that validate core functionality.
  3. Sprint-embedded QA: QA engineers work within delivery teams, writing automation alongside feature development, executing exploratory testing, and providing fast feedback on quality. Defects are caught and fixed within the same sprint.
  4. Non-functional assurance: Performance, security, and accessibility testing executed at regular intervals and before every major release. Results benchmarked against established baselines and SLA requirements.
  5. Quality maturity transfer: Transition quality practices, frameworks, and operational knowledge to your internal teams. Establish ongoing quality metrics and continuous improvement processes.

Want to release faster without increasing risk? Quality automation is the answer.

Our quality engineers can assess your current testing maturity, design a tailored automation strategy, and build the frameworks that give your teams the confidence to deploy daily. Typical mobilisation in 1-2 weeks.