End-to-end software testing and quality assurance — manual and automated — to catch bugs early, improve reliability, and deliver products that users trust.

ZTABS provides qa & testing — End-to-end software testing and quality assurance — manual and automated — to catch bugs early, improve reliability, and deliver products that users trust. Our capabilities include test automation, manual qa, performance testing, and more.
Shipping buggy software is the fastest way to lose users and credibility. ZTABS provides comprehensive QA and testing services — from test strategy and planning through manual testing, automation frameworks, and CI/CD integration. We work as an embedded QA team alongside your developers or as a standalone testing partner for pre-launch audits.
Our automation stack includes Playwright and Cypress for end-to-end browser testing, Jest and Vitest for unit and integration tests, k6 and Artillery for load and performance testing, and Appium for mobile app testing. We write tests that run in your CI pipeline (GitHub Actions, GitLab CI, CircleCI) so every pull request is validated automatically. For manual testing, we cover functional testing, exploratory testing, cross-browser compatibility, responsive design verification, and accessibility audits (WCAG 2.1 AA).
We also specialize in API testing using Postman and custom scripts, security testing including OWASP Top 10 checks, and regression testing to ensure new features don't break existing functionality. Every engagement starts with a test strategy document that defines scope, risk areas, test types, and coverage targets. We provide detailed bug reports with reproduction steps, screenshots, and severity classifications.
QA engagements range from $5K for a pre-launch audit to $10K-$25K/month for ongoing embedded QA teams.
Core capabilities we deliver as part of our qa & testing.
Automated unit, integration, and E2E tests with Jest, Cypress, Playwright, and more.
Exploratory testing, regression, and UAT to validate real-world usage and edge cases.
Load, stress, and scalability tests to ensure apps perform under real traffic.
Tests integrated into your pipeline for continuous feedback on every change.
Test plans, coverage analysis, and risk-based prioritization for efficient QA.
Our team picks the right tools for each project — not trends.
Node.js empowers businesses to build scalable applications with unparalleled speed and efficiency. By leveraging its non-blocking architecture, organizations can deliver seamless user experiences and accelerate time-to-market, driving innovation and growth.
Harness the power of React to accelerate your development process, enhance user experiences, and drive ROI. With its component-based architecture, React allows businesses to build dynamic applications that are both scalable and maintainable, ensuring long-term success in a competitive landscape.
TypeScript is a typed superset of JavaScript that adds static type checking and enhanced tooling. Catch errors at compile time, improve code maintainability, and accelerate development with world-class IDE support.
Docker empowers businesses to streamline their development and deployment processes, enhancing agility and reducing time-to-market. By leveraging container technology, organizations can achieve significant cost savings and improved operational efficiency.
Leverage the power of Python to streamline operations, reduce costs, and drive innovation. Our Python solutions enable businesses to enhance productivity and deliver results faster than ever.
Every qa & testing project follows a proven delivery process with clear milestones.
Review your app, coverage gaps, and release pace to define a testing strategy.
Create test cases, automation framework, and CI integration approach.
Implement and maintain automated suites for regression and critical paths.
Run tests, triage failures, and provide clear reports for stakeholders.
Update tests with new features and keep automation reliable and fast.
What sets us apart for qa & testing.
From unit tests to E2E — we cover frontend, backend, APIs, and infrastructure.
Playwright, Cypress, Jest, and CI-native tools for fast, maintainable automation.
We prioritize high-impact areas and avoid over-testing — quality without slowing delivery.
Tests that fit your workflow, PR gates, and clear feedback loops for the team.
Projects typically start from $10,000 for MVPs and range to $250,000+ for enterprise platforms. Every engagement begins with a free consultation to scope your requirements and provide a detailed estimate.
Find answers to common questions about our qa & testing.
We offer unit, integration, E2E, performance, and security testing. We can handle manual QA, automated regression, and full test strategy design.
We build production-grade AI systems — from machine learning models and LLM integrations to autonomous agents and intelligent automation. 23 AI-powered products shipped, 300+ clients served.
We build modern web applications using Next.js, React, and Node.js — from marketing sites and dashboards to full-stack SaaS platforms. Every project ships with responsive design, SEO optimization, and performance scores above 90 on Core Web Vitals.
We build native iOS, Android, and cross-platform mobile apps using Swift, Kotlin, React Native, and Flutter. From consumer apps with social features to enterprise tools with offline sync — we deliver polished, high-performance applications from concept to App Store and Play Store.
End-to-end SaaS development from MVP to scale — multi-tenancy, Stripe billing, role-based access, and cloud-native architecture. We have built and shipped 23 SaaS products of our own, serving 50,000+ users. Next.js, Node.js, PostgreSQL, AWS and Vercel.
Get a free consultation and project estimate for your qa & testing project. No commitment required.