Functional testing services
Functional testing that ensures your vision becomes reality.
DeviQA provides manual and automated functional testing for web, mobile, and desktop applications and APIs. Since 2010, our engineers have tested user journeys, business rules, integrations, regression scenarios, and cross-platform behavior for products from Abbott, Tipalti, GoodShape, ChargeAfter, and Mimecast. DeviQA has delivered 600,000+ QA project man-days and is certified to ISO 9001, ISO/IEC 27001, and ISO/IEC 20000-1.
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Functional testing challenges addressed by DeviQA
DeviQA addresses unclear requirements, coverage gaps, regression risks, cross-platform inconsistencies, and integration failures through structured manual and automated functional testing.
Functional testing services provided by DeviQA
DeviQA applies manual and automated functional testing at component, integration, system, acceptance, and regression levels to verify software behavior against technical and business requirements.
Functional test automation
We automate repeatable functional and regression scenarios and integrate them into CI/CD pipelines to increase execution frequency and reduce manual effort.
Unit testing
We test individual functions, classes, and components in isolation to identify defects before they are integrated into larger systems.
Integration testing
We test data exchange and interactions between application modules, APIs, services, databases, and third-party systems.
System testing
We validate end-to-end system behavior against defined functional requirements in production-like environments.
User acceptance testing
We verify business workflows and acceptance criteria to support user acceptance testing (UAT) and release approval.
Regression testing
We rerun critical functional tests after code, configuration, integration, or dependency changes to detect unintended effects before release.
Abbott Laboratories is a global healthcare giant
90%
Test coverage
1.6k+
Test cases created
X18
Faster regression testing run
Compass is the first modern real estate platform
85%
Test coverage
2k+
Test cases created
2.5x
Faster regression testing run
Arklign is a dental practice platform
95%
Test coverage
5k+
Test cases created
3k+
Number of critical bugs logged
Tipalti is a payment automation platform
12
Years of cooperation
100%
Covered performance
2x
Faster regression testing time
Xola is a booking system for tours and attractions
90%
Test coverage
3.2k+
Automation test scripts created
1-2h
Time of regression
Experience the DeviQA difference
From initial consultation to full-scale QA implementation, we deliver results
DeviQA’s AI advantage
At DeviQA, we use AI to make testing smarter and simpler. Our ecosystem is built to deliver faster, smarter, and more cost-efficient results — so your team can do more in less time.
DeviQA AI ecosystem
AI-powered IDE assistant
Reduces test script writing time
QA companion
Provides suggestions for test optimization and addresses gaps
Automated code review
Flags unused variables, improper loops, and other common errors
AI for API testing in Postman
Streamlines API test case creation and response validation
Features
Test case creation
Code review
Exploratory planning
Log analysis
without AI
6 hrs
3 hrs
2 hrs
2 hrs
with DeviQA AI
4 hrs (33% saved)
2 hrs (33% saved)
45 min (60% saved)
1 hr (50% saved)
Functional testing engagement models
DeviQA offers three engagement models for functional testing services: staff augmentation, a dedicated QA team, and project-based outsourcing. The right model depends on the testing scope, project duration, required capacity, and level of delivery ownership.
Staff augmentation
Add DeviQA functional testers to your existing team while retaining control over their tasks, priorities, tools, and testing processes.
Advantages:
Fast onboarding of skilled professionals
Flexible scaling of resources
Full control over processes and priorities
Best for:
Teams that need additional functional testing capacity or specific expertise while maintaining day-to-day delivery ownership.
Dedicated QA team
A stable functional testing team works within your product and engineering workflows and supports ongoing releases.
Advantages:
Full focus on your project
Scalable team size based on your needs
Seamless communication and collaboration
Best for:
Products with continuous development and long-term functional and regression testing requirements.
Project-based outsourcing
DeviQA takes ownership of a defined functional testing scope, including planning, test design, execution, defect reporting, and delivery.
Advantages:
End-to-end functional testing management
Predictable timelines and costs
No need to allocate internal resources
Best for:
Defined releases, modules, migrations, or testing initiatives that require full delivery ownership.
Why choose DeviQA for functional testing services?
600,000+ project man-days delivered across QA engagements.
Ownership of functional testing planning, test design, execution, defect reporting, and delivery within the agreed scope.
500+ completed QA projects across more than 40 industries.
Start with a free functional testing trial before beginning a paid engagement.
Senior QA engineers who can independently analyze requirements, create test documentation, execute tests, and report defects.
A 96% employee retention rate supports stable QA teams, compared with an industry average of 80%.
An in-house testing lab with more than 300 real devices and platform configurations.
A professional community of more than 4,000 QA engineers and testing specialists.
Book a call to ensure software works the way you imagined
DeviQA’s functional testing process
DeviQA follows a six-step functional testing process covering requirements analysis, test planning, test case design, execution, defect management, and final validation.
Analyze requirements and risks
We review business requirements, user stories, acceptance criteria, workflows, and integrations to identify ambiguities, gaps, and functional risks.
Define the testing scope and plan
We define the functional testing scope, priorities, environments, test data, responsibilities, schedule, and entry and exit criteria.
Design functional test cases
We create positive, negative, boundary, and end-to-end test cases covering business rules, user workflows, integrations, and critical functionality.
Execute functional tests
We execute manual and automated functional tests in the required environments and compare actual system behavior with expected results.
Report, track, and retest defects
Each defect report includes reproduction steps, severity, environment details, expected and actual results, and supporting evidence. Fixed defects are retested and tracked through closure.
Complete final validation and reporting
We validate the corrected functionality, rerun the required regression scope, and report test coverage, results, open defects, and remaining risks. This evidence supports the client’s final release decision.
Here’s what people are saying
about DeviQA
34 reviews
34 reviews
9 reviews
“It was so easy to integrate your people with us and we didn't have any problems.”
Janosch Greber
VP of engineering at RealTyme
“DeviQA has always brought us really high quality candidates for us to be able to seamlessly mesh into our team.”
Danny He
CEO and founder at Soapbox
“You guys have always been genuine, flexible and personable.”
Ryan Austin
CEO and founder at Cognota
“In fact, they have been a part of our success story, helping us grow from six workers 11 years ago to about 1200 workers now.”
Raanan Tauber
QA manager at Tipalti
“They can take my lack of knowledge and I can trust that they will be able to produce something of value.”
Ray Alde
Co-founder & cto at Arklign
“To me, that's above and beyond, I did not expect that to be so smooth and so easy.”
Mark Levine
Chief product officer at CYDEF
“They know what they're doing because the people that they send to us are quality people.”
Charles Chase
Chief technology officer at Returnmates
“There is also very good follow up on the engineers and the job they're doing.”
Olivier Mayot
Chief technology officer at SimpliField
Collaboration process overview
- 01
Initial contact. We start by understanding your testing needs and aligning them with your goals.
- 02
Assessment. Our experts analyze your current process and propose a tailored improvement plan.
- 03
PoC. Try a free proof of concept to see our capabilities in action.
- 04
Trial & evaluation. We conduct a trial phase and review the results together.
- 05
Contract & QA implementation. Once satisfied, we sign the contract and begin full-scale QA.
- 06
Flexible partnership. DeviQA offers scalable solutions to adapt to your business needs.
