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Software Development in Testing

QA & Testing

Ship with confidence — backed by a QA powerhouse that writes code, not just tickets. From manual exploratory testing to AI-driven autonomous test agents, our SDETs engineer quality into every stage of your delivery pipeline — across any device, platform, and digital ecosystem.

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Tested with
Playwright·Cypress·Selenium·Mabl·Testim·Applitools·Postman·REST Assured·Karate·Pact·k6·JMeter·Appium·BrowserStack·Allure·GitHub Actions·Python·TypeScript·BDD / TDD·Shift-left·Self-healing AI·Visual AI·Defect prediction·Contract testing·Playwright·Cypress·Selenium·Mabl·Testim·Applitools·Postman·REST Assured·Karate·Pact·k6·JMeter·Appium·BrowserStack·Allure·GitHub Actions·Python·TypeScript·BDD / TDD·Shift-left·Self-healing AI·Visual AI·Defect prediction·Contract testing
What we provide

A complete quality engineering capability — rooted in one team.

Whatever your release looks like, QCerris covers the full testing spectrum end to end. Every discipline below is delivered by embedded SDETs who understand your code, your risks, and your roadmap.

QCerris quality engineering — manual testing, automation testing, user acceptance testing, usability, data, security, compliance, risk-based, and regression testing

Manual & automation, UAT, usability, data, security, compliance, risk-based, and regression testing — coordinated under a single quality strategy.

Why QA demands your full attention

Meeting user expectations is not enough. They need to be exceeded.

A product that underwent robust quality management can be launched with confidence — no fear of data leakage or system breakdown. QA not only earns you five-star reviews, it keeps you compliant, improves operational performance, and dramatically reduces development costs.

QCerris has always kept quality assurance as an integral part of product delivery. We offer both stand-alone and full-cycle QA, carried out by a dedicated team of QA engineers, SDETs, test analysts, and managers.

Three reasons QA pays for itself

Eliminate errors and risks

Robust QA gives you a launch with confidence — no fear of data leakage, outages, or breakdowns reaching your users.

Keep your users happy

Good UX goes a long way, but a bad one goes even longer. Prioritizing QA shows you genuinely understand your users' needs.

Reduce development costs

Defects caught early cost ~10× less to fix than after deployment. Consistent QA prevents expensive post-launch fires.

What sets an SDET apart

Production-grade test code

Maintainable frameworks with the same engineering rigor as application code — versioned, reviewed, and refactored.

Shift-left by default

Embedded in sprint planning and code review, catching defects in the design and PR stage — not at the end.

Quality engineering in CI/CD

Tests run on every commit, gated deploys, flaky-test triage, and quality dashboards wired into the pipeline.

Software Development in Testing

Our SDETs are embedded engineers — not just testers.

Modern quality is a software discipline. A Software Development Engineer in Test (SDET) builds the tooling, harnesses, and automation that make quality measurable and continuous — writing real code that lives alongside your application, in the same repo and the same pipeline.

That means test architecture decisions, custom test data factories, API and contract test suites, performance harnesses, and self-healing automation — all engineered to scale with your product instead of breaking under it.

Full-spectrum coverage

Every type of testing, in one team.

Our team can test from any device, any place, and in any digital ecosystem — combining deep automation expertise with the newest AI-assisted techniques.

01

Functional & Exploratory

End-to-end validation that features work exactly as specified — across user scenarios, edge cases, and structured exploratory sessions.

02

Test Automation & SDET

Robust, maintainable automation frameworks. Our SDETs write code — not throwaway scripts — integrated directly into your CI/CD pipeline.

03

AI-Powered Testing

Autonomous test generation, self-healing suites, and AI defect prediction using Mabl, Testim, Applitools, Functionize, and Playwright + AI.

04

Performance & Load

System behavior under real and peak load with k6, Gatling, and JMeter. SLA and capacity validation before every release.

05

API & Contract Testing

REST and GraphQL validation with Postman, REST Assured, and Karate. Consumer-driven contract testing with Pact for microservices.

06

Security Testing

OWASP-based vulnerability and penetration testing for web and APIs, with DevSecOps integration to catch issues before production.

07

Visual & Accessibility

AI visual regression with Applitools, cross-browser/device coverage on BrowserStack and LambdaTest, and WCAG accessibility compliance.

08

Mobile Testing

Native and hybrid apps on iOS and Android with Espresso, XCUITest, Detox, and Appium — on real devices and cloud grids.

09

Data & ETL Testing

Validating pipelines, transformations, and warehouse integrity — row counts, schema drift, and data-quality assertions at scale.

10

Chaos & Resilience

Controlled fault injection and resilience testing to prove systems degrade gracefully and recover under real-world failure.

11

Compliance & UAT

Risk-based and compliance testing aligned to ISO/IEC 27001 practices, plus structured user acceptance testing with your stakeholders.

12

QA Strategy & Consulting

Test strategy design, QA maturity assessment, tooling selection, and building a quality-first engineering culture in your org.

AI in quality engineering

How we apply AI across the testing lifecycle.

AI is the fastest-moving area of engineering, and testing is where it pays off first. We use it to expand coverage, cut maintenance, and find the defects traditional suites miss — without replacing engineering judgment.

Autonomous test generation

AI proposes test cases from requirements, user stories, and recorded flows — accelerating coverage of paths humans overlook.

Self-healing automation

Locator and selector drift is auto-corrected at runtime, slashing the maintenance tax that kills most automation efforts.

Visual AI validation

Perceptual diffing catches rendering and layout regressions across browsers and viewports that pixel comparison misses.

AI defect prediction

Risk models flag the modules most likely to break from a change set, focusing regression effort where it matters.

Intelligent test data

Synthetic, privacy-safe data generation for realistic, repeatable scenarios — without exposing production records.

LLM output evaluation

Structured evaluation, red-teaming, and regression of AI features — prompt versioning, drift detection, and quality scoring.

SDET skill set

The engineering skills behind the testing.

Our SDETs combine classic test design with modern software and AI engineering capabilities.

Test architecture
Java / Python / TypeScript
CI/CD pipeline design
API & contract testing
Performance engineering
Shift-left review
Risk-based testing
BDD / TDD
Test data engineering
Prompt & LLM evaluation
Containerized test envs
Observability & reporting
Modern tech stack

Tools & technologies our QA team uses

Our SDETs stay current with the fastest-moving area of engineering. This is the actual toolset our team works with.

AI-Powered Testing
Mabl
Testim
Applitools
Functionize
Diffblue
Qodo
CodiumAI
Automation Frameworks
Playwright
Selenium
Cypress
WebdriverIO
TestCafe
Puppeteer
API & Contract
Postman
REST Assured
Karate
Pact
Insomnia
Dredd
Performance & Load
k6
Gatling
JMeter
Locust
Artillery
Mobile Testing
Appium
Espresso
XCUITest
Detox
BrowserStack
LambdaTest
CI/CD & Reporting
GitHub Actions
Jenkins
CircleCI
GitLab CI
Allure
TestRail
Our approach

How we deliver quality at every stage

1

Assessment

Project analysis, testing goals, scope, and risk profile defined up front.

2

Strategy

A test strategy matched to your release cadence, risk, and compliance needs.

3

Automation Build

Framework implemented and wired into CI/CD for continuous testing.

4

Verification

Requirement checks, bug-fix validation, and regression on every change.

5

Continuous QA

Ongoing maintenance, AI defect prediction, and quality-metric visibility.

Ready to achieve a trouble-proof digital product?

Consultation is free. Our QA team is ready to talk.

Let's talk QA