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QA and software testing, automation of AQA and stress tests

Prevents financial losses and reputational risks through bugs in production. Conduct comprehensive quality audit of digital products: from detailed functional manual testing of web services and mobile applications to implementation of automated regression tests (AQA) and simulation of extreme loads (Load/Stress Testing).

Manual Functional Testing Automated QA (Playwright, Cypress) Load & Stress Testing (Locust, JMeter) Cross-Browser & Mobile QA API Testing (Postman, REST) Bug Tracking & QA Strategy
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99.5% Bug Catch

Detection of bugs before release

Detect critical defects and logical errors during development before clients see them

x5 Test Velocity

Speed AQA

Automated tests check full regression of key scenarios within 15 minutes before each release.

50+ Real Devices

Device park

Testing on real iOS and Android smartphones, tablets, and browsers without blind emulators

0 Checkout Flaws

Protection of payments and checkout

Thorough verification of payment gateways, promo codes, and cart to prevent loss of leads.

[ ENGINEERING STANDARDS QA ]

Why fixing errors before release is 10 times cheaper than fixing a failure on the live site

When a customer encounters a non-functional payment button, incorrect delivery calculation, or app freezing during an order — they do not spend time calling the support service, but immediately switch to competitors. At the same time, developers often suffer from so-called "blind spots" and physically cannot predict all scenarios of non-typical user behavior. The independent engineering QA ALL IT Agency team creates a systematic testing strategy, reproduces rare edge cases and guarantees a predictable release without emergency fixes in production.

✓ We sign an official contract with fixed price and development terms
✓ Warranty SLA support 90 days after the system is put into operation
✓ 100% transfer of intellectual property and source code of the project to the client

System test design

We create structured test plans, checklists, and test cases that ensure 100% coverage of all claimed business logic.

Cross-browser compatibility and mobile ergonomics

We check the display and functionality on Safari, Chrome, Firefox and screens of all sizes under control of iOS and Android.

Automated testing (AQA)

We write reliable E2E and API tests based on Playwright, which are integrated into CI/CD and prevent the release of broken functionality.

Load stress testing

We apply artificial peak load using Locust/JMeter to ensure that the database and servers can handle the influx of customers.

[ 3 CATEGORIES OF SOLUTIONS ]

Specialized Solution Areas

Choose the technical implementation format for your tasks.

[ 01 ] Manual QA & Usability

Manual Testing of Web and Mobile Applications ↗

Detailed functional testing of user interfaces of websites, client cabinets and mobile applications by real engineers on physical devices.

What is included in the implementation:
✓ Functional testing of all forms, validation fields, calculators, and checkout processes
✓ Cross-platform testing on current versions of iOS and Android
✓ Research testing (Exploratory Testing) for detecting non-standard defects
✓ Formatting of transparent bug reports in Jira/Trello with video recordings and console logs
Postman / Charles Proxy / Chrome DevTools / TestRail / Jira
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[ 02 ] Test Automation & CI/CD

Automated testing (AQA) ↗

Development of automated tests for checking critical business scenarios (authorization, search, filters, payment, order placement, API endpoints) without human involvement.

What is included in the implementation:
✓ Automation of E2E (End-to-End) user scenarios on a modern framework Playwright
✓ Automated testing of RESTful API reliability, status codes, and response schemas
✓ Integration of automated tests into CI/CD pipeline (GitHub Actions / GitLab CI) before deployment
✓ Reduction of regression testing time for the project from 2–3 days to 15 minutes
Playwright / TypeScript / Cypress / Postman Newman / Allure Reports
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[ 03 ] Load & Performance Benchmark

Load and stress testing of systems ↗

Simultaneous operation of thousands of users on the website or service modeling. Determining the maximum performance limit of servers and eliminating bottlenecks in the database.

What is included in the implementation:
✓ Simulation of realistic load scenarios: spikes (Spike), stress (Stress), endurance (Soak)
✓ Detection of slow database queries, memory shortages, and connection pool blocking
✓ Determining the Exact Number of Concurrent Users That the Current Infrastructure Can Support
✓ Recommendations on optimization of server configurations, indexes, and caching
Locust / Apache JMeter / k6 / Grafana / Prometheus / Node Exporter
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[TECHNOLOGICAL STACK]

Engineering Stack and Architectural Standards

We do not use bulky constructors or ready-made themes. Development is carried out according to the principles of clean architecture and proven corporate standards.

Manual QA & Network Inspection

Tools for deep research of client-server interaction

  • Postman API Client
  • Charles Proxy / Fiddler
  • Chrome DevTools & Lighthouse
  • TestRail Test Case Management
  • BrowserStack Real Device Cloud
  • Jira / GitHub Issues

Automation Frameworks (AQA)

Modern tools for writing fast and stable automated tests

  • Playwright Test Runner
  • TypeScript / JavaScript
  • Cypress Testing Suite
  • REST-assured / PyTest
  • Allure Test Reporting
  • Newman CLI Automation

Load & Performance Engines

Large load generators and traffic simulation

  • Locust Python Load Generator
  • Apache JMeter Benchmark
  • k6 Performance Testing
  • Prometheus Metrics Exporter
  • Grafana Performance Dashboards
  • Linux Kernel Resource Profilers

QA Strategies & Compliance

System quality standards for software development

  • ISTQB Certified Standards
  • Regression & Smoke Testing
  • Boundary Value Analysis (BVA)
  • Equivalence Partitioning
  • Sanity & Acceptance QA
  • OWASP Top 10 Security Checklist
[ METHODOLOGY AND STAGES ]

How We Implement Projects from Scratch

Transparent and controlled process without missed deadlines and unexpected budget expansions.

01

Analysis of requirements and preparation of test plan

We study the product functionality, analyze the technical requirements, identify critical nodes and compose a testing strategy.

02

Development of checklists and test cases

Describes step-by-step scenarios for checking positive and negative user paths to fully cover the system.

03

Conducting testing and bug fixing

We test functionality on real devices, create bug reports with steps to reproduce and collaborate with the development team.

04

Writing automated tests or stress tests

We automate key scenarios using Playwright or conduct load tests with tools Locust/JMeter.

05

Final quality report and readiness for release

Provides a detailed report on identified and closed defects, stability metrics, and gives official confirmation of readiness for release.

Our Clients

Companies that trust ALL IT Agency for development, scaling, and security of their digital solutions

DIM Service
Partner Case 6
Valikhnovski Surgery Institute
Meregi Group
Partner Enterprise
Partner Case 5
Partner Case 11
Wizeclub
TOV Zagin Alpha
DIM Service
Partner Case 6
Valikhnovski Surgery Institute
Meregi Group
Partner Enterprise
Partner Case 5
Partner Case 11
Wizeclub
TOV Zagin Alpha
[ FREQUENT QUESTIONS ]

Answers to questions from the client

Key details regarding terms, warranties, transfer of source code and the development process.

The developer writes code according to a specific technical logic and tests only the "ideal path" (Happy Path) — how the program should work with correct actions. Real users, however, often enter unexpected data, click the "Back" button during payment or lose internet connection. A professional QA-engineer thinks like a critically minded user, models dozens of non-standard edge situations and finds bugs before they cause damage.
Automation is justified when the product has a stable core functionality (registration, cart, payment, search), which is regularly checked before each release. If manual testing of the entire site takes several days of working time for the team — automated tests check it in 15 minutes, reducing QA costs by several times and eliminating human errors.
We fundamentally use a park of real physical devices (Apple iPhone of different generations, iPad, Samsung, Xiaomi, Google Pixel smartphones on different Android versions), not only browser emulators. This allows us to accurately check the behavior of sensors, finger gestures, keyboard, Face ID biometrics and real response speed.
Load testing shows the exact stability limit of your site: how many users can simultaneously add products to the cart and place orders without slowing down the server. We identify "bottlenecks" (slow SQL queries, lack of RAM in Nginx/PHP) and provide specific engineering recommendations for smooth passing of marketing campaigns and sales.
Each found bug is recorded in your task tracker (Jira, Trello, Asana, GitHub) according to a strict standard: clear title, severity level (Blocker, Critical, Minor), step-by-step instructions to reproduce, expected and actual results, screen recording, console logs and network requests. The developer spends minimum time understanding the problem.
Yes. We regularly conduct independent pre-release quality audits (Pre-Release QA Audit): we perform thorough testing of the website or application, check payment stability and provide a full report on the system status within 3–7 working days.

Solution needed according to specific requirements Your industry?

Find out how we adapt and deploy IT infrastructure and services for government agencies, healthcare, retail, HoReCa, logistics and construction sectors.

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Do you need reliable quality control for your digital product?

Describe your website, application or platform. Our QA leads will conduct an initial assessment, select the optimal testing strategy and calculate an accurate cost estimate.

Confidentiality

Official NDA contract for system audit

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