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Kultrix QA engineers embed quality at every stage of development, not just at the end. They write test plans, build Playwright and Cypress automation suites, integrate testing into CI/CD pipelines, and advocate for quality-first engineering practices across the team.
Start in 1-2 Weeks
Senior Engineers Only
7+ Years Experience
NDA
EXPERTISE
WHAT WE DO
We build and maintain Playwright or Cypress end-to-end test suites for critical user flows, login, checkout, onboarding, running automatically in CI on every pull request.
We test REST and GraphQL APIs with Postman and Newman, validating response schemas, status codes, authentication, edge cases, and performance under load.
We conduct structured exploratory testing sessions before releases, applying heuristic techniques to uncover defects that scripted tests miss, especially edge cases and unexpected user paths.
We run load and stress tests with k6 or JMeter to validate that your application performs under the concurrent user load expected in production, identifying bottlenecks before launch.
We configure test pipelines in GitHub Actions, GitLab CI, or CircleCI, running unit, integration, and E2E tests on every commit and blocking deploys when tests fail.
We establish and document testing standards, acceptance criteria templates, bug reporting conventions, and Definition of Done criteria that lift quality across the whole team.
WHO THIS IS FOR
Whether you are a startup or enterprise, we have the right engagement for you.
Fast-track your MVP with senior talent. Launch on time and within budget.
Improve performance, UX, and features of your existing product with expert help.
Augment your team with senior specialists to accelerate feature delivery.
OUR APPROACH
Choose the cooperation format that best fits your business goals and development velocity.
Fast launch to test your idea and gather user feedback with minimal investment.
What's included
Timeline Typically 9-16 weeks
Complete cycle from initial strategy and design to final launch.
What's included
Timeline Typically 20-40 weeks
Scale your team with expert developers to accelerate development.
What's included
Timeline Flexible / Long-term
OUR HIRING PROCESS
Tell us about your project goals, timeline, and team needs. We'll set up a free consultation to dive deeper into your requirements.
Based on your project, we recommend the ideal team structure, engagement model, and technology approach - tailored to your goals and budget.
We handpick the best-fit professionals from our senior talent pool. You'll meet them, review their experience, and give the green light.
Your team onboards within 48 hours. We align on workflows, set up communication, and start delivering results from week one.
As your project evolves, we scale your team, add new specialists, or adjust scope - all within your existing partnership.
INDUSTRIES
Our QA Engineer professionals build solutions across various sectors.
Data-driven commerce solutions that improve journeys, boost sales, and optimize operations.
Data-driven commerce solutions that improve journeys, increase sales, and optimize operations.
Reliable medical platforms that protect patient data, simplify workflows, and support clinical accuracy.
Product-driven platforms that enhance workflows, automate processes, and scale with your business.
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Expert professionals ready to join your team and deliver results.
CASE STUDIES
Testimonials
What impressed us most was how Kultrix handled the full stack - frontend, backend, and mobile - with one cohesive team. Communication was clear, delivery was predictable, and the final product exceeded what we initially scoped.
Co-CEO
Kultrix built both our web platform and mobile app from scratch. Their team understood the complexity of our industrial workflows and translated them into clean, intuitive interfaces. We launched on time and our operators adopted the tools immediately.
Co-CEO
Kultrix handled everything for us - landing page, dashboard, mobile app, and even a Chrome extension. Having one team own the entire product surface meant everything felt connected and consistent. They shipped fast and the quality speaks for itself.
CEO, Ping Proxies
Kultrix has been our go-to partner for multiple projects - from marketing websites to full mobile applications and backend systems. They scale up when we need speed and maintain consistency across every project. Reliable, fast, and technically strong.
CEO, Volume Apps
Working with Kultrix on our mobile app and backend was seamless. They brought strong product thinking to every sprint, not just code. When priorities shifted, they adapted quickly without losing momentum. Exactly the kind of partner a product team needs.
Product Lead, Pelago
We needed a team that could handle mobile development, server infrastructure, and AI features all at once. Kultrix delivered on all three fronts. Our fitness platform went from concept to production in under four months with zero compromises on quality.
CEO, Fitblast
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FAQ
Manual testing involves a human tester executing test cases and exploring the application to find defects - it is flexible, catches nuanced UX issues, and requires no code. Automated testing involves scripts that execute test cases programmatically - it is repeatable, fast, and runs continuously in CI without human involvement. Both are necessary: automation handles regression coverage, manual testing handles exploratory discovery. Kultrix QA engineers are proficient in both.
Standard start time is 48 hours from contract signing. For QA engineers with specific automation framework expertise (Playwright, Cypress, Appium for mobile) or performance testing experience, a one-week lead time is typical. We maintain bench capacity for general QA work at all times.
Playwright is our default for web end-to-end testing - it is faster and more reliable than Selenium, supports all major browsers, and has excellent TypeScript integration. Cypress is preferred on projects where the team wants an in-browser debugging experience. For mobile testing, we use Detox (React Native), Appium (cross-platform), or XCUITest/Espresso for native apps. Framework choice is driven by the project stack, not preference.
Yes. We regularly join projects with zero automated test coverage and build a suite from the ground up - selecting the framework, establishing folder structure and naming conventions, writing the first critical-path tests, and integrating the suite into the CI pipeline. We prioritise the highest-risk user flows first to deliver immediate regression value.
Yes. We configure test execution in GitHub Actions, GitLab CI, Bitbucket Pipelines, CircleCI, or Jenkins - wherever your pipeline lives. We configure test parallelisation to keep CI feedback fast, set up test reporting dashboards, and configure failure notifications so the right person is alerted within minutes of a regression.
We test APIs at three levels: contract testing (validating response shape and type against a schema), functional testing (verifying that correct inputs produce correct outputs across all documented endpoints), and negative testing (verifying that invalid inputs, authentication failures, and edge cases return the correct error responses). Postman collections are checked into source control and run in CI alongside E2E tests.
Yes. We use k6 for performance testing - defining virtual user scenarios, ramp-up profiles, and success thresholds. We test the endpoints and user flows that are most load-sensitive (search, checkout, authentication) under realistic concurrent user loads, identify bottlenecks in the application or database, and provide a report with reproduction scripts so engineers can address root causes.
Our QA engineers participate in sprint planning to review acceptance criteria and identify testability issues before development starts. They write test cases during the sprint alongside development rather than at the end. They demo test coverage at sprint reviews and contribute to retrospectives by surfacing process gaps that allow defects to reach QA. Testing is part of the Definition of Done, not a separate phase.
Yes. We test React Native apps with Detox or Maestro, native iOS apps with XCUITest, and native Android apps with Espresso or UIAutomator. We test on physical devices and emulators/simulators across the supported OS version range. For CI mobile testing at scale, we configure Firebase Test Lab to run tests across a real device matrix.
Yes. Many QA engineers on the Kultrix bench are SDETs (Software Development Engineers in Test) who write both test code and, when needed, production code. They write unit tests with Jest or pytest, integration tests for API endpoints, and contribute to shared test utilities. The boundary between QA and development on modern teams is intentionally blurry.
End-of-project deliverables include a maintained automation test suite checked into the repository, a test plan document covering scope and coverage strategy, a test run report for the final release, and documentation of any open known issues with severity ratings. We ensure the automation suite is in a state where the client team can maintain and extend it after the engagement ends.
We offer monthly retainer (fixed QA hours per month, guaranteed availability) and project-based (QA resource embedded for a defined delivery) models. Both include weekly reporting, bug triage support, and a dedicated account manager. Minimum engagement is one month. QA engineers typically join product teams for three to twelve months depending on the delivery cadence.
