Software quality assurance and testing services from Serbia. Automated testing, security testing, 40-60% savings.
Software quality is not an afterthought—it's a competitive advantage. Bugs in production erode user trust, increase support costs, and slow down feature delivery. At StepTo, our QA engineers from bring rigorous testing practices to your development process, catching defects early and ensuring every release meets the highest quality standards. From automated test suites to manual exploratory testing, we cover every dimension of software quality.
Whether you need a dedicated QA team, individual test automation engineers, or a complete testing strategy for your product, we offer flexible engagement models tailored to your needs. Our engineers are skilled in modern testing frameworks including Selenium, Cypress, Playwright, JMeter, and Appium, with expertise in performance testing, security testing, API testing, and mobile app testing.
Based in Belgrade, Serbia, our QA teams work in the CET timezone, providing full overlap with European business hours and significant overlap with US East Coast. You get experienced QA professionals at 40-60% lower costs than Western Europe, with strong English communication, attention to detail, and a proactive approach to quality that goes beyond just finding bugs.
Comprehensive QA coverage for every aspect of your software
Build robust test automation suites using Selenium, Cypress, Playwright, and other frameworks to catch bugs early and enable continuous delivery.
Experienced QA engineers perform thorough manual and exploratory testing to find edge cases, usability issues, and defects that automation misses.
Identify bottlenecks and ensure your application handles expected traffic with JMeter, k6, and Gatling performance testing and load simulation.
Vulnerability assessments, penetration testing, and OWASP compliance checks to identify and fix security weaknesses before they become incidents.
Comprehensive API testing with Postman and automated frameworks to validate endpoints, data integrity, error handling, and third-party integrations.
Cross-device and cross-platform testing for iOS and Android apps using Appium and BrowserStack, covering functionality, performance, and UX.
Industry-leading tools for comprehensive quality assurance
How teams leverage our QA services
Establish comprehensive quality gates before every release to catch critical bugs, performance regressions, and security vulnerabilities before they reach production.
Integrate automated testing into your CI/CD pipeline for instant feedback on every commit. Run unit, integration, and E2E tests automatically on every pull request.
Validate legacy system behavior before and during modernization projects. Create test suites that document existing functionality and catch regressions during migration.
Ensure your application meets industry regulatory requirements including GDPR, HIPAA, PCI-DSS, and accessibility standards with specialized compliance test suites.
offers an excellent combination of skilled QA engineers, competitive rates, and European timezone alignment. Our QA engineers are experienced with modern testing tools and methodologies, fluent in English, and cost 40-60% less than equivalent talent in Western Europe or the US. Working in the CET timezone means full overlap with European teams and significant overlap with US East Coast, enabling real-time collaboration on test results and bug resolution.
Manual testing involves human testers executing test cases, exploring the application, and evaluating usability—ideal for exploratory testing, UX evaluation, and edge case discovery. Automated testing uses scripts and frameworks to run tests automatically, providing fast feedback on regressions and enabling continuous testing in CI/CD pipelines. Most projects benefit from a combination of both: automation for repetitive regression tests and manual testing for new features and exploratory scenarios.
We integrate seamlessly into your existing workflow. Our QA engineers join your Slack or Teams channels, participate in sprint ceremonies, and use your project management tools. We set up automated tests in your CI/CD pipeline so every commit and pull request triggers test runs. Test results are reported through your preferred channels with detailed bug reports in your issue tracker. We adapt to your process, not the other way around.
We test all types of software applications: web applications (single-page apps, progressive web apps, complex enterprise systems), mobile apps (iOS, Android, cross-platform), APIs and microservices, desktop applications, and embedded systems. Our QA engineers have experience across industries including fintech, healthcare, e-commerce, SaaS, and enterprise software. Whatever your technology stack, we have the expertise to ensure quality.
We track key metrics including test coverage (code and requirements), defect detection rate, defect escape rate, test execution time, and test automation percentage. We provide regular reports showing testing progress, bug trends, risk areas, and quality improvements over time. Our goal is not just finding bugs but preventing them—we work with development teams to identify root causes and improve processes for higher quality overall.
Yes, building test automation frameworks is one of our core strengths. We design and implement custom automation frameworks tailored to your technology stack and testing needs. This includes selecting the right tools (Selenium, Cypress, Playwright, Appium), setting up page object models or similar patterns, integrating with CI/CD pipelines, configuring parallel execution, and establishing reporting with tools like Allure. We also train your team to maintain and extend the framework independently.
Let's build a testing strategy that catches bugs early and delivers confidence with every release.
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Work with accountable, English-fluent professionals who communicate clearly, protect quality, and deliver with a steady operating rhythm. Cost efficiency matters, but performance is why clients stay with us.
