SaaS Testing Services | Multi-Tenant, Billing & Release QA Skip to main content
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[ SaaS testing services ]

SaaS testing that protects every tenant, every plan and every release.

QA engineers for B2B and B2C SaaS products. We test tenancy, subscriptions, integrations and every release, so one deploy never becomes one bad day for all your customers.

  • ISTQBcertified QA engineers
  • UpworkTop Rated Plus
  • 100%Job Success Score
  • 5.0 Clutch20 verified reviews
  • ~75%less manual regression per release for a SaaS client

[ Industry challenges ]

What a bug costs in SaaS

The failures SaaS teams bring to us most often. In a subscription business, every defect is a churn risk.

01

One deploy, every customer affected

In SaaS, a regression doesn’t hit one install. It reaches every tenant at once, and churn follows.

02

Data visible across tenants

A missing tenant check in one query or API can show one customer another’s data. That ends contracts.

03

Billing that quietly loses revenue

Proration, upgrades, coupons and failed renewals that miscalculate cost money or trust, usually both.

04

Plan gates and feature flags that leak

Paid features open on free plans, or paying customers locked out after a flag change.

05

Integrations and APIs that break customers’ workflows

SSO, webhooks and public APIs are part of your customers’ stack. A breaking change breaks them too.

06

Performance that degrades as you grow

One heavy tenant, a big import or a busy hour slows everyone down.

[ What we test ]

Testing mapped to the customer lifecycle

Each practice is pointed at a moment in a customer’s life, from sign-up to renewal, and links to the full service.

Most critical

Core workflows & regression

The workflows customers pay for, tested end to end and re-run on every release, so new features never break the ones people already rely on.

[ Test scenarios ]

The checklist behind every release

Pick an area to see the scenarios we run, and the client platform where they matter most.

[ Compliance & standards ]

Tested against what enterprise buyers ask for

Security questionnaires and audits decide enterprise deals. We test the controls and hand over evidence your team can use.

SOC 2 · ISO 27001

Access control, audit trails, encryption and change management tested, with evidence your auditors can use.

GDPR · CCPA · data privacy

Consent, data export, deletion and retention, plus data residency for customers who need it.

PCI DSS

Card capture, tokenisation and payment pages tested where your SaaS takes payments.

Accessibility · WCAG 2.2

Your app usable with keyboards, screen readers and zoom, which enterprise buyers increasingly ask for.

[ Platforms, integrations & tools ]

The stack we test SaaS products on

If your stack or integration isn’t here, we’ll say plainly where we need ramp-up time.

Products

On client projects
Collaboration & project managementSaaS management & procurementPayroll complianceEmbedded payments & escrowVoice AI APIsE-commerce & deliveryWeb, mobile & PWA

Integrations

What we test against
Stripe & ChargebeeOkta, Azure AD & Google SSOSlack & Microsoft TeamsPayroll systemsTwilioWebhooks & REST APIsAWS, Azure & GCP

Automation & CI/CD

Our engineers’ stack
SeleniumPlaywrightCypressPythonPostmanSwaggerJenkinsGitLab CIXrayBrowserStack

Performance & security

Our engineers’ stack
JMeterk6OWASP ZAPBurp SuitePostgreSQLaxe DevTools

[ Case studies & results ]

Six SaaS products, from collaboration to voice AI

Collaboration, delivery, SaaS management, payroll compliance, embedded payments and voice AI. Different buyers, the same need for releases customers don’t notice.

Collaboration SaaS · Projects, tasks & chat

Workflo

2 yearsfrom build to scale, 2022 to 2024
13+QA engineers at peak: 3 core, 10+ on demand
2,500+test cases across tasks, chat, projects and admin
600+defects found and verified before release

The challenge

An all-in-one workspace bringing projects, tasks, real-time chat and files together. Features were shipping fast, every workspace shared the same release, and chat had to stay real-time as teams grew.

Our approach

  • A core team of three, scaled with 10+ on-demand testers for big releases
  • Tasks, projects, chat and admin tested end to end
  • Workspace roles and permissions checked across teams
  • Cross-browser, mobile web and usability passes
  • JMeter load and VAPT before major launches
Read the Workflo case study
Cannabis e-commerce & delivery SaaS

Drop Delivery

One platform for compliant cannabis e-commerce, dispatch and last-mile delivery. Six QA engineers, 3,000+ test cases and ~75% less manual regression per release.

What we test

  • Storefronts, cart and compliant checkout
  • Customer and driver apps
  • 1,200+ automated Selenium and API checks
  • Migrations and database integrity
Read the case study
SaaS management & procurement

CloudEagle

A platform for managing a company’s SaaS apps, licences, spend and renewals. Its data has to be right, because finance and IT act on it.

What we test

  • App discovery and integrations
  • Licence usage and spend reports
  • Renewal and procurement workflows
  • Role-based access for IT and finance
Visit cloudeagle.ai
Payroll compliance · Australia

Subi

Connects to payroll systems and runs automated wage audits for HR teams, accountants and lawyers, with audit-ready reports.

What we test

  • Payroll system connections and data sync
  • Award rules and wage audit results
  • White-label reports for advisors
  • Data security and access
Visit subi.au
Embedded payments infrastructure

LiquidTrust

Micro Escrow payments for marketplaces, platforms and banks: funds held and released only when conditions are met.

What we test

  • Hold and release on milestones and approvals
  • Hosted, white-label and API integrations
  • KYC, KYB and compliance flows
  • Transaction visibility and reporting
Visit liquidtrust.io
Voice AI platform

Cartesia

Real-time voice AI for developers and enterprises. Latency, voice quality and API reliability are the product.

What we test

  • Text-to-speech API responses
  • Latency and streaming under load
  • Voices, languages and settings
  • Developer console, keys and usage
Visit cartesia.ai

[ How we work ]

Five steps, starting with a free pilot

The same process on a one-week pilot or a multi-year engagement. Only the scope changes.

  1. 01Day 1–2DiscoveryWe use your product, then walk plans, tenancy, integrations, recent incidents and release cadence with your team.
  2. 02Week 1Test strategyA risk map ranked by customer and revenue impact, the scenario checklist and test tenants for every plan.
  3. 03Every sprintExecutionManual, automation, API, security and load testing on every build, wired into your CI/CD.
  4. 04Daily & weeklyReportingDaily progress in your tracker, a weekly report, and severity-ranked findings with steps, screenshots and video.
  5. 05OngoingContinuous supportRegression on every merge and release, and the team scaled up with on-demand testers around big launches.

[ Why QAonTOP ]

Why SaaS teams pick us, and stay

SaaS domain, from live products

Collaboration, delivery, SaaS management, payroll, payments and voice AI products tested for real teams.

Certified, in-house engineers

ISTQB-certified QA engineers employed by QAonTOP, not freelancers passed between projects.

Scale up for launches, down after

A core team plus on-demand testers, as Workflo used, so you pay for capacity when you need it.

Automation that keeps up

Suites in your CI/CD so regression runs on every merge, not once a month.

Customer data stays private

NDA signed before access, test tenants and synthetic data by default, and every test asset stays yours.

[ Social proof ]

Team really stepped up our testing with AI-driven automation. QAonTOP has improved product quality, and earned more clients. They feel less like a vendor and more like a true growth partner.
Lior M., CEOQAonTOP client Verified client
SaaS clients WorkfloDrop DeliveryCloudEagleSubiLiquidTrustCartesia

[ Free checklist ]

SaaS release readiness checklist

Not ready to talk yet? Take the checks we run before a major release, a pricing change or an enterprise launch, with what a pass looks like for each one.

  1. TenancyNo data across tenants
  2. BillingEvery plan change bills right
  3. AccessRoles and SSO hold
  4. APIsNo breaking changes
  5. LoadHeavy tenants don’t slow others
  6. RegressionCore workflows pass

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[ FAQ ]

Questions SaaS teams ask us first

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[ Contact us ]

Get a free test assessment of your platform

✓ Free one-week POC✓ NDA before access✓ A QA lead replies the same day

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