Software Development
Software Testing and QA Services
Test automation, load testing and hands-on QA that catch defects before your customers do, plus a test suite your developers will keep running.
- 01Test automation with Playwright and Cypress
- 02API and integration testing
- 03Performance and load testing
- 04Manual and exploratory testing
- 05Mobile app testing
- 06QA audits
- 07Accessibility testing
At a glance
Software testing and QA covers automated end-to-end and API tests, performance and load testing, and manual testing for usability and edge cases. It's for teams that want bugs caught before release, including on software written in-house or by another vendor. Tag4 Technology Solutions builds stable test suites with Playwright or Cypress that live in your repository and run in your pipeline.
Updated
- Best for
- Teams that release often, or are preparing for a launch or traffic spike
- Typical timeline
- 4–8 weeks for a QA audit plus an automation starter suite
- Typical budget
- $15k–$40k for an audit and starter suite; ongoing QA billed per tester monthly
- Core technologies
- Playwright, Cypress, k6, JMeter, Appium, BrowserStack
- Where tests run
- Your repository and CI pipeline, blocking merges when critical paths fail
- Offices
- New York, Chicago, Dallas, Toronto, Sydney, Dubai
Every team tests. What differs is whether bugs are found before release or reported by a customer afterward. Our software testing and QA services cover automated end-to-end tests, API tests, performance and load testing, and structured manual testing for what automation handles poorly, like usability and visual polish. We test software we build and software written by your own team or another vendor.
The classic failure is a large automated suite that nobody trusts. Tests fail for reasons unrelated to real bugs, developers learn to rerun them until they pass, and within a year someone switches the suite off. We avoid that by keeping browser tests few and stable with Playwright or Cypress, pushing most coverage down to faster API and unit tests, and treating a flaky test as a bug to fix that same week.
Load is the other gap that shows up again and again. An app works fine with ten testers, then stalls on launch day or at month-end. We model realistic traffic with k6 or JMeter, track down the slow queries and missing indexes, and hand you concrete numbers: how many concurrent users the system handles and what gives out first.
A QA audit plus an automation starter suite for an existing app typically takes 4–8 weeks. Ongoing QA inside a delivery team is priced per tester per month, and a common industry ratio is one QA engineer for every three to five developers. Either way, the tests live in your repository and run in your pipeline.
What we do
QA & Software Testing services
Test automation with Playwright and Cypress
End-to-end tests for the flows that make or lose money, like signup, checkout and approvals, running in CI on every pull request.
API and integration testing
Contract and functional tests for REST and GraphQL endpoints that run in seconds and catch most back-end regressions.
Performance and load testing
Load, stress and soak tests with k6 or JMeter, with a report on capacity limits and the specific bottlenecks worth fixing.
Manual and exploratory testing
Experienced testers working through real scenarios and odd edge cases, especially on new features and usability questions automation can't judge.
Mobile app testing
Testing on real iOS and Android devices through BrowserStack, plus Appium or Detox automation for regression runs.
QA audits
A review of your current tests, release process and defect history, ending in a ranked plan for what to automate first.
Accessibility testing
Automated axe scans plus manual screen reader checks against WCAG 2.2 AA.
How we work
What you can expect from us
Automate at the right layer
Most checks belong in quick unit and API tests. Browser tests are saved for critical user flows, which keeps the suite fast and stable.
No tolerance for flaky tests
A test that fails at random gets quarantined and fixed, never ignored. A suite people trust is worth more than a big one.
QA inside the sprint
Testers join planning and write acceptance criteria alongside developers, so testing isn't a separate phase that starts after the code is supposedly done.
Results anyone can read
Test runs, coverage of critical flows and defect trends go to a shared dashboard, so product owners can check quality without asking.
Tools and platforms
- Playwright
- Cypress
- Selenium
- Appium
- Detox
- k6
- Apache JMeter
- Postman
- BrowserStack
- axe DevTools
- Jest
- xUnit
- GitHub Actions
- Azure Test Plans
Process
From first call to production
Discovery
A few working sessions to pin down goals, users, constraints and what "done" means. You get a written scope and estimate.
Design
Architecture, data model and clickable UI before heavy coding starts, so surprises show up early and cheaply.
Build
Two-week sprints with a demo at the end of each one. You see working software, not status reports.
Launch
Automated tests, staged rollout, monitoring and a rollback plan. Go-live should be boring.
Support
Bug fixes, updates and new features on a monthly plan, or a clean handover to your team.
FAQ
QA & Software Testing: common questions
How much do software testing services cost?
A one-time QA audit with an automation starter suite typically costs $15k–$40k. Ongoing QA is billed per tester per month, much like other engineering roles. Automation costs more up front than manual testing, but it pays back quickly on any product that releases more than once a month.
Playwright or Cypress?
For new projects we usually pick Playwright. It covers Chromium, Firefox and WebKit, handles multiple tabs and domains well, and runs tests in parallel without paid add-ons. If you already have a healthy Cypress suite, we'll extend it rather than rewrite it.
Can you test software you didn't build?
Yes, that's a common starting point. We begin with a short audit to learn the app and its riskiest areas, then build a test plan around them. All we need is access to a test environment and your repository.
How much of our testing should be automated?
Automate anything you repeat every release: regression checks, critical user flows and API behavior. Keep manual testing for new features, usability and one-off scenarios where writing a test costs more than it saves. Chasing full automated coverage usually produces a slow, brittle suite.
When should we run load tests?
Before any launch or event where traffic will jump, and after major architecture changes. If usage grows steadily, run them on a schedule too, so you find capacity limits months ahead instead of during an outage.
Do your tests run in our CI/CD pipeline?
Yes. Tests are committed to your repository and run in GitHub Actions, Azure DevOps, GitLab CI or whatever you already use. Failures on critical paths block the merge, so regressions don't reach production.
Related
Often paired with
DevOps Services
CI/CD, Terraform, Kubernetes and observability, set up so your team can run it without us.
Learn moreWeb App Development
React, Next.js, Node and .NET web apps, from customer portals to full SaaS front ends.
Learn moreStaff Augmentation
Vetted engineers and dedicated development teams that work inside your process and time zone.
Learn moreIndustries we build for
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