Software testing & QANavi Mumbai, India

Every release passes through here.

StableMerge is a software testing company. Manual and automation testing for web, mobile, API and SaaS products, so what reaches your users has already been proven.

Gate 01 · FunctionalGate 02 · RegressionGate 03 · DevicesGate 04 · APIGate 05 · Performance
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01 What we believe

Hope is not a test plan. Every release we touch is proven on real devices, by people and by code, before it reaches a single user.

Manual testing finds what scripts can't. Automation keeps finding what was already found. We do both, in your tools, inside your sprints.

Reports arrive with steps, evidence and severity, so a fix can start without a meeting.

How we work

02 Ten gates of testing

Each gate proves one thing. Together they prove the release.

Not every product needs all ten. The plan says which gates yours passes through, and why.

Gate 01of 10

Functional testing

Every feature works exactly as specified, on the happy path and off it.

Gate 02of 10

Regression testing

New releases don't break what already worked. The suite grows with the product.

Gate 03of 10

Mobile app testing

Android and iOS across devices, OS versions, networks and interruptions.

Gate 04of 10

Web & cross-browser

Chrome, Safari, Firefox and Edge, at every screen size that matters.

Gate 05of 10

API testing

Endpoints, data contracts and integrations, checked with Postman and code.

Gate 06of 10

Performance & load

Speed and stability under heavy traffic, measured with JMeter and k6.

Gate 07of 10

Security testing

Common vulnerabilities, authentication flows and data handling.

Gate 08of 10

Usability & accessibility

Easy to use, and usable by everyone, including with screen readers.

Gate 09of 10

Database testing

Data accuracy, integrity and migrations, before and after a release.

Gate 10of 10

UAT support

Help your business users sign off with confidence, with scripts and evidence.

Scroll to walk the gatesAll testing services

04 Why StableMerge

Built stable. Merged smoothly.

The name is the promise. A merge is where work comes together; stable is how it should land.

I

Proof over promises

Every finding comes with steps, a device, a screenshot or a recording. Nothing is "it seemed fine".

II

Reports developers can act on

Expected versus actual, severity and reproduction steps, written so a fix can start without a meeting.

III

Automation that compounds

We automate what repeats, so every release after the first one costs less to prove.

IV

One team, every platform

Web, Android, iOS and APIs, tested by people who also build them and know where things break.

05 How a release gets through

From first build to stable merge.

Five gates, in order. The release light moves only when the previous gate is lit.

Gate 01

Understand

We learn your product, users and release goals, and decide what to test by hand and what to automate.

Gate 02

Plan

A test strategy, test cases and a timeline that fit your sprints and your budget.

Gate 03

Test

Manual testing on real devices and browsers, plus automated checks that run on every build.

Gate 04

Report

Bug reports with steps, evidence and severity, and dashboards your developers can act on right away.

Gate 05

Retest & automate

We verify every fix and grow the automation suite, so each release after this one gets faster.

06 Selected work

Products our team has built and tested.

Two apps that went through every gate, from first build to store release.

07 Standards

What every engagement includes.

01

Evidence with every finding

Steps, environment, severity, and a screenshot or recording.

02

Real devices, not only emulators

Android and iOS phones people actually own, plus cloud device farms for breadth.

03

Automation you keep

Test cases, reports and automation code belong to you at the end of the engagement.

04

Weekly updates, honest timelines

Clear milestones you can plan around, and early warning when something moves.

SeleniumPlaywrightCypressAppiumPostmanREST AssuredJMeterk6TestRailJiraJenkinsGitHub ActionsBrowserStackKotlinSwiftFlutterReact NativeReactNext.jsNode.jsPostgreSQLAWS

08 We're hiring

QA Engineering Intern (Manual + Automation)

Six months, paid, on site in Navi Mumbai. Manual, UI automation and API testing on live products.

Paid internshipMonthly stipend6 monthsRoadpali, Kalamboli, Navi Mumbai
View the role

Send your release through the gates.

Tell us about your product and what you'd like tested. We reply within one business day with a plan and an estimate.