What we do
End-to-End Quality Engineering
From functional coverage to chaos engineering — we embed quality at every layer of your software delivery pipeline.
Quality is not a phase. It is a discipline woven into every commit, every pipeline, and every release. Teststack Labs delivers structured, automation-first quality engineering across the full stack — so your teams ship with confidence, not crossed fingers.
Functional Testing
Rigorous validation of application behaviour against requirements. We design test suites that cover critical paths, edge cases, and regression scenarios — executed consistently across every build.
- Requirements analysis
- Test case design
- Regression suites
- Exploratory testing
- Defect triage & reporting
Test Automation
Scalable, maintainable automation frameworks built for longevity. We architect solutions using industry-leading tools and patterns that integrate natively into your CI/CD pipeline.
- Framework design & build
- Playwright / Cypress / Selenium
- BDD with Cucumber / SpecFlow
- CI/CD integration
- Parallel & distributed execution
Web & Mobile Testing
Cross-browser and cross-device coverage for web applications and native or hybrid mobile apps. We ensure consistent, high-quality experiences regardless of platform or screen size.
- Cross-browser automation
- iOS & Android testing
- Responsive design validation
- Appium & XCUITest
- Device farm integration
API & Backend Testing
Contract, integration, and load testing for REST, GraphQL, and gRPC services. We validate your APIs at the source — before issues propagate to the UI layer.
- REST & GraphQL validation
- Contract testing with Pact
- Service integration testing
- Postman / RestAssured / Karate
- Schema & payload validation
Database & Data Quality
End-to-end data integrity testing across relational and NoSQL stores. We verify data pipelines, transformations, and persistence layers to ensure your data is accurate and trustworthy.
- Data integrity validation
- ETL pipeline testing
- Schema migration testing
- SQL & NoSQL coverage
- Data consistency checks
Performance Testing
Load, stress, and endurance testing to understand how your system behaves under real-world conditions. We identify bottlenecks before your users do.
- Load & stress testing
- k6 / Gatling / JMeter
- Baseline & regression benchmarks
- Throughput & latency profiling
- Scalability analysis
Security Testing
Proactive identification of vulnerabilities across your application surface. We integrate security validation into your pipeline so risks are caught early, not in production.
- OWASP Top 10 coverage
- DAST & SAST integration
- Penetration testing support
- Dependency vulnerability scanning
- Auth & authorisation testing
Resilience & Chaos Engineering
Controlled fault injection to validate system resilience and recovery behaviour. We help you understand failure modes before they become incidents.
- Chaos experiment design
- Fault injection testing
- Recovery & failover validation
- Steady-state hypothesis testing
- Observability integration
Release Assurance
Structured quality gates and release readiness frameworks that give your teams the confidence to deploy on demand — without compromising stability.
- Release readiness criteria
- Quality gate design
- Go/no-go decision frameworks
- Deployment verification testing
- Post-release monitoring hooks
Our Approach
We do not bolt testing on at the end. Every engagement begins with understanding your architecture, your pipeline, and your risk profile — then we design a quality strategy that fits.
Automation-first
Manual testing has its place. Automation is the default.
Shift-left
Quality conversations start at requirements, not UAT.
Pipeline-native
Tests run in CI/CD — not as an afterthought.
Risk-based
Coverage is prioritised by impact, not just line count.
Ready to engineer quality into your pipeline?
Talk to our team about where you are today and where you want to be.