Software Testing Services for Reliable, Scalable Digital Products

Helping organizations ensure software quality, performance, and reliability across applications and platforms. Our testing services focus on reducing risk, building release confidence, and delivering stable user experiences at scale.
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our Services

Software Testing Services Built for Quality at Scale

Automation Testing

We design and implement automation frameworks that reduce manual effort and increase test coverage. Automated testing improves release speed, catches regressions early, and supports continuous delivery across web and mobile applications.

Performance Testing

We test how your applications behave under real-world load. Our performance testing identifies bottlenecks, validates scalability, and ensures systems remain stable and responsive during peak usage.

Security Testing

We assess applications for vulnerabilities that put data and systems at risk. Our security testing helps uncover weaknesses early and supports secure architectures that meet enterprise and regulatory expectations.

Functional Testing

We verify that applications behave as intended across features and workflows. Functional testing ensures business requirements are met at unit, integration, system, and user acceptance levels.
Compatibility Testing
We ensure applications work consistently across devices, browsers, operating systems, and environments. Compatibility testing reduces user-facing issues and supports a seamless experience across platforms.

Manual Testing

We complement automation with thoughtful manual testing. Our testers approach applications from the user’s perspective to uncover usability issues, edge cases, and defects that automated tests often miss.
Our Strategy

Quality Assurance Across Every Stage of the SDLC

Structured Quality Engineering

We apply disciplined quality engineering practices from the start of development. By embedding QA early in the SDLC, we help teams prevent defects instead of reacting to them late in the cycle.

Agile Quality Assurance

Our QA teams work alongside agile delivery teams to test continuously as features are built. Early validation reduces rework, shortens feedback loops, and helps teams move faster with confidence.

Continuous Testing

We design testing environments that support continuous integration and delivery. Automated and continuous testing ensures issues are identified early and releases remain stable as code changes frequently.

Metrics-Driven Approach

We track quality using meaningful metrics, not vanity numbers. Test coverage, defect trends, and release readiness indicators help teams understand risk and prioritize improvements.

Accelerated Time-to-Market

By aligning QA processes with delivery goals, we help teams release features faster without compromising quality. Our approach reduces last-minute surprises that delay launches.

Proven Tools and Techniques

We use modern testing tools and frameworks to support scalability and speed. Tooling is selected based on fit for purpose, not trends, ensuring reliable and repeatable results.

Selected Clients Success Stories

Ecommerce & Retail
Education & Learning
Telecom
Ecommerce & Retail
Education & Learning
Telecom
Case Study

Software testing teams for a high-traffic e-commerce application

Sthenos worked with a high-traffic e-commerce platform to improve software quality and speed up release cycles by shifting from manual-heavy testing to scalable automation across critical user journeys.

  • Built a custom automation framework for end-to-end e-commerce workflows
  • Implemented Selenium-based regression automation
  • Enabled cross-browser and cross-OS testing
  • Standardized QA processes and defect classification

Automation Testing | API Testing | Software Testing | Mobile Application Testing

Case Study

Software testing services for a leader in the e-learning industry

Sthenos supported a global e-learning platform by strengthening performance and scalability through structured testing aligned with real-world user behavior.

  • Identified performance and scalability risks
  • Executed load and stress testing simulating live traffic
  • Built reusable performance test scripts
  • Documented QA processes for long-term benchmarking


Performance Testing | Functional Testing | QA Documentation | Scripting

Case Study

Performance and functional testing for a leading telecom giant

Sthenos delivered performance and functional testing for a telecom enterprise to improve release stability and detect issues earlier in the delivery cycle.

  • Developed automation scripts using Selenium, Java, and POM
  • Performed functional and black-box testing
  • Implemented structured defect tracking and reporting
  • Executed automated unit and integration tests


Performance Testing | API Testing | Software Testing | Functional Testing

Leading by Passion. Driven by Innovation

4000+

Talent Pool

2000+

Products Engineered

1500+

Happy Clients

22+

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Comprehensive IT

We’re happy to answer any questions you may have and help you determine which of our services best fit your needs.

Call us at: +1 (703) 945-5300
Your benefits:
  • Client-oriented
  • Independent
  • Competent
  • Results-driven
  • Problem-solving
  • Transparent
What happens next?
1

We Schedule a call at your convenience 

2

We do a discovery and consulting meeting 

3

We prepare a proposal 

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