01 · Automated testing
Unit, integration, end-to-end, regression.
Cypress, Playwright, Jest, pytest, JUnit. Test pyramid tuned to the codebase, not aspirational coverage targets that nobody maintains.
Service · Quality assurance
Quality assurance services.
Automated and manual testing, security assessments, performance analysis, and accessibility testing. Industry standards met across every release we ship. QA built into the engagement model, not a separate vendor with separate priorities.
Our expertise
Automated, manual, security, performance, accessibility.
QA is not a phase at the end. It is built into every sprint of every engagement. Automated where automation pays off, manual where humans do better, security and accessibility on equal footing.
02 · Manual exploratory testing
Where humans find what scripts miss.
Edge cases, mobile-device variations, real-user workflows. Documented test plans, but flexible enough to find the bugs that scripts cannot.
03 · Performance testing
Load, stress, soak, scalability.
k6, JMeter, custom load generators. We find the breaking point before users do. Realistic load patterns based on actual traffic shapes, not synthetic.
04 · Accessibility testing
WCAG 2.2 AA + Section 508 conformance.
axe-core automated checks plus assistive-technology testing (VoiceOver, JAWS, NVDA). Audit-ready documentation produced as part of the engagement.
Capabilities
Security, regression, integration, mobile.
The QA work that other vendors skip and we include. Security testing on equal footing with functional. Regression suites that survive refactors. Mobile testing across the device matrix that matters.
Security testing
OWASP Top 10, dependency scanning, penetration testing.
Annual penetration testing on production. Continuous dependency scanning. SAST and DAST integrated into CI. Compliance testing for PCI, HIPAA, SOC 2 as your engagement requires.
Regression testing
Maintained suites that survive refactors.
Regression suites tuned to your real defect history. Automated where stability is high, manual where the area changes a lot. Pruned as the system matures.
Mobile testing
Real devices, OS versions, network conditions.
Real-device testing across iOS and Android. Network throttling, battery, device-specific edge cases. Not just simulator-only work.
Integration & API testing
Contract testing, mock services, end-to-end flows.
Pact contract testing for service boundaries. Mock services for upstream dependencies. End-to-end flow tests against staging and production smoke environments.
How we work
Four phases. Same team across all four.
The phases that apply to every engagement, not just quality assurance. The team that scopes does the building, and the operating.
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Phase 01 · 2–4 weeks
Discovery and scope.
Stakeholder interviews, technical review of existing systems, risk register, written scope with milestones and exit criteria.
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Phase 02 · 3–12 months
Build and iterate.
Two-week sprints with working demos. Senior leads on every sprint review. Code reviewed, accessibility checked.
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Phase 03 · 2–6 weeks
Cutover and stabilization.
Parallel run with rollback path. On-call coverage during the launch window. Stabilization continues until incident rate trends to zero.
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Phase 04 · ongoing
Operate and evolve.
Multi-year retainer with the same team that built the product. Monthly check-ins, quarterly business reviews.
Read the full engagement model on the How We Work page.
Industries we serve
Quality Assurance across 15 verticals.
Six core verticals where OST has the deepest engagement experience. Plus nine adjacent industries served on selective engagements.
01
Education
K-12 charter networks, higher education, public sector portals.
02
Nonprofit & Civic
Donor-cycle nonprofits, advocacy organizations, civic platforms.
03
Healthcare & Wellness
HIPAA-aware platforms, medical directories, telemedicine adjacency.
04
Real Estate Technology
Multi-tenant SaaS, brokerage tools, self-storage operators.
05
E-commerce & Marketplaces
OpenCart specialists, custom commerce, $10B+ in transactions processed.
06
Manufacturing & B2B
Industrial platforms, B2B safety-tech, embedded engineering teams.
Also serves on selective engagements
Frequently asked questions
Common questions on quality assurance engagements.
What test coverage do you target?
Depends on the codebase. New code: 80%+ unit coverage, key flows in integration. Legacy: regression coverage on critical paths first, broader coverage as we refactor. We do not chase 100% coverage as a vanity metric.
Manual or automated — which?
Both. Automated for repeatable regression, performance, and well-defined functional flows. Manual for exploratory, mobile-device variation, and complex user-workflow validation.
Do you handle accessibility testing?
Yes, by default. WCAG 2.2 AA + Section 508 conformance is included in baseline scope on every engagement. Audit-ready documentation produced as part of delivery.
What about security testing?
Annual third-party penetration testing on production. Continuous dependency scanning. SAST and DAST integrated into CI. Compliance testing as your engagement requires (PCI, HIPAA, SOC 2).
Can you take over an existing QA process?
Yes. Most engagements include taking over existing test suites, evaluating their coverage, pruning what no longer applies, and adding what is missing. We do not insist on starting from zero.
Ready to build?
Pick a path forward.
Multiple ways to start: schedule a discovery call, run our cost calculator for a budget bracket, or use the contact form for a written response.