eCommerce Testing Services | Checkout, Payments & Peak Load Skip to main content
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[ eCommerce software testing services ]

Software testing for eCommerce: ship faster, protect every checkout.

QA engineers who have kept live stores, pricing engines and delivery apps shipping every week, on Shopify, WooCommerce, Magento and custom stacks.

  • ISTQBcertified QA engineers
  • UpworkTop Rated Plus
  • 100%Job Success Score
  • 5.0 Clutch20 verified reviews
  • 4+ yearson live commerce platforms

[ Industry challenges ]

What a bug costs an online store

These are the failures commerce teams bring to us most often. Each one shows up in revenue before it shows up in a bug tracker.

01

Bugs that abandon carts

A coupon that won’t apply or a button that won’t respond sends a ready buyer away, after you’ve already paid to bring them in.

02

Sale-day crashes

Downtime lands on your busiest, highest-margin hours, and the ad spend keeps running while the site doesn’t.

03

Payment failures

Failed or duplicate charges become lost orders, chargebacks and support tickets, and customers remember them.

04

A mobile checkout that breaks

Much of your traffic shops on phones. A flow that works on desktop but not on an older Android quietly loses orders.

05

Prices and stock out of sync

Selling at the wrong price, or stock you don’t have, means cancellations, refunds and margin you can’t recover.

06

Platform updates breaking the store

A Shopify, WooCommerce or Magento update or a new plugin can break themes and checkout overnight, with no code change on your side.

[ What we test ]

Testing mapped to how your store makes money

Not a generic service list. Each practice is pointed at a commerce flow, and links to the full service if you want the detail.

Most critical

Checkout & payment testing

Guest and logged-in checkout, every gateway outcome, 3-D Secure, refunds and the emails that follow.

[ Test scenarios ]

The checklist behind every release

Pick an area to see the scenarios we run, and where we have already run them on a client’s live platform.

[ Compliance & standards ]

Tested against the rules your store answers to

Commerce touches card data, personal data and customers of every ability. We test the controls, and hand over evidence your auditors and legal team can use.

PCI DSS

Card-data flows, tokenisation, checkout controls and what reaches logs. We aren’t a QSA; we give your assessor test evidence.

GDPR / CCPA

Consent banners, account deletion, data export and opt-outs, and what personal data turns up in logs and emails.

WCAG 2.2 AA

Keyboard, focus, screen-reader and contrast checks on the templates customers buy through.

OWASP Top 10

Broken access control on orders and accounts, coupon abuse, injection and API authentication.

[ Platforms, integrations & tools ]

The stack we have tested commerce on

Storefronts and integrations are listed only if we have tested them on a live client platform. If yours isn’t here, we’ll say plainly where we need ramp-up time.

Storefronts & channels

On client projects
ShopifyWooCommerceMagentoCustom web storefrontsPWANative iOSNative AndroidAdmin & CMS

Payments & integrations

On client projects
Mollie (iDEAL, cards, refunds)POS & inventory syncTwilio SMSMarketplace order importsTrack-and-traceREST APIs & webhooks

Automation & performance

Our engineers’ stack
SeleniumPlaywrightCypressAppiumPythonPostmanSwaggerJMeter

Devices, data & delivery

Our engineers’ stack
BrowserStackPostgreSQLJenkinsGitLabGitHubJira + XrayFullstoryFigma
All testing tools we use →

[ Case studies & results ]

Problem, approach, outcome, with real numbers

Two commerce engagements, written up by the engineers who ran them.

Regulated eCommerce · 2022–2025

Drop Delivery

~75%less manual regression time per release
1,200+automated checks per regression run
8platforms covered, web to native apps

Problem

Per-market purchase limits, delivery windows, ID checks and taxes had to hold on every weekly release, across storefronts, customer and driver apps, POS sync and SMS. Regression took days by hand.

Approach

A per-market rule matrix turned into 3,000+ Xray test cases. Selenium, Python and Postman suites on Jenkins for every merge, BrowserStack real devices, PostgreSQL checks on every retailer migration and JMeter before holiday peaks.

Read the full case study
Retail last-mile · 2022–2026

Peddler

~70%faster response on peak-load paths after tuning
250+defects found and verified before release
5payment outcomes validated end to end

Problem

Marketplace batches from sources such as AliExpress arrived alongside sale traffic and slowed the platform. Failed or cancelled iDEAL payments could leave bookings half-created.

Approach

One engineer owned a risk-based plan in ZenHub, Figma design checks before build, all five Mollie payment outcomes, Postman and BrowserStack coverage, and JMeter batch and spike tests ahead of busy periods.

Read the full case study
Also in commerce · DesignO3+ years testing a personalization engine inside Shopify, WooCommerce and Magento stores~60%less manual regression

[ 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 walk your revenue journeys, recent incidents, analytics and stack with your team.
  2. 02Week 1Test strategyA risk map per journey, the scenario checklist, what to automate, and the environments and test data needed.
  3. 03Every sprintExecutionManual and automated testing inside your sprint and your tracker: Jira, ZenHub or Zoho on our commerce projects.
  4. 04Daily & weeklyReportingDaily progress in your tracker, a weekly report, and severity-ranked defects with steps and evidence.
  5. 05OngoingContinuous supportRegression every release, load cycles before each peak, and the team scaled up or down as you need.

[ Why QAonTOP ]

Why commerce teams pick us, and stay

Commerce domain, from live projects

Storefronts, pricing engines, payments and delivery apps, tested for real clients for years, not just listed on a slide.

Certified, in-house engineers

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

AI-driven testing

AI-assisted regression cut manual regression by about 60% on DesignO’s personalization platform.

Scale by the release

From one engineer on Peddler to six on Drop Delivery. The team grows or shrinks with your roadmap.

Nothing hidden

We work in your tools, report daily, and every test case, script and report stays yours.

[ Social proof ]

Tremendous job! The team exceeded my expectations and addressed all my concerns. My experience with QAonTOP was very pleasant, and I highly recommend their QA services.
Co-founder & CTO, Drop DeliveryeCommerce SaaS · 4+ years with QAonTOP Verified client
Commerce clients Drop DeliveryDesignOPeddler

[ Free checklist ]

Black Friday readiness testing checklist

Not ready to talk yet? Take the plan we run before a sale event, planned back from launch day, with the scenarios to check at each step.

  1. 8 weeks outModel the traffic
  2. 6 weeks outBaseline the journeys
  3. 4 weeks outSpike, soak, retest
  4. 2 weeks outFreeze and regress
  5. Sale dayStay on call
  6. AfterWrite it down

Send me the checklist

One email with the PDF. No sales sequence unless you ask for one.

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The checklist is on its way. When you want a second pair of eyes on your sale plan, book a free assessment.

[ FAQ ]

Questions eCommerce teams ask us first

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[ Contact us ]

Get a free test assessment of your store

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

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