QA Testing Services for SaaS Startups: How Vervali Works
How Vervali tests a SaaS startup's product: what to test first, when to outsource, manual or automation, the monthly cost at published rates, and how the free pilot…
Custom API Development Services, Tested Before Launch
Vervali designs and builds REST and GraphQL APIs and the integrations behind them: ERP, payment, identity and CRM connections, versioning and documentation, authentication and rate limiting. Every API ships with contract tests, security tests and load tests written by our own QA team, so the integration your customer depends on is proven before it goes live.
150+ clients
450+ projects
275+ engineers
15+ years
ISO/IEC 17025:2017Accredited testing laboratory
CMMI Maturity Level 3The process is written down and repeats
ISO 9001:2015Quality management
ISO/IEC 27001Information security
What We Build
REST and GraphQL APIs, the integration layers between systems that were never designed to talk, and the back ends behind mobile and web products. US product teams get this work in US hours, 9am to 1pm Eastern, with delivery from India, from an ISO/IEC 17025 accredited lab with CMMI Level 3 process. Every API ships with contract tests, security tests and load tests written by our own QA team. A free review of one existing API is the first look.
REST and GraphQL
The interfaces your products actually call. SOAP sits in the quote when you named it. We will not invent a protocol catalogue as the default. Stay here for the build. Method for proving it sits on API testing services.
Integration Layers
ERP, payment, identity and CRM connections between systems that were never designed to talk. The failure is almost always a field mapping, an idempotency gap or a retry that duplicates a transaction. Stay here when that is the job.
Back Ends Behind Products
The services a mobile or web product depends on, with versioning, documentation, authentication and rate limiting in the delivery, not as an upgrade. A custom product around those APIs sits on custom software development.
Need an API that ships with contract and security tests, not another undocumented endpoint? Book a call.
Book a CallWhat Ships With the API
The difference between an API that lasts and one that gets rebuilt in two years. This ships with the build, not as an upgrade. Contract and security tests are written by the same QA team that tests APIs for a living. Method sits on API testing services. Stay here for the delivery.
Documentation That Matches
The implementation, not a slide from kickoff. OpenAPI or a Postman collection when those are the artefacts your consumers already use. A document that drifted from the code is a finding, not a footnote.
Contract Tests
A change that breaks a consumer fails the build rather than production. Both sides need an owner. Happy-path collections are not a contract. Functional API testing sits next door when the buy is that layer only.
Versioning and Deprecation
A versioning policy and a deprecation path with notice periods, written down before the first consumer. An experienced integration buyer uses this question to judge whether the vendor has done this before. Stay here when that path has to exist.
Authentication and Rate Limits
Auth, rate limiting and quota behaviour as part of the build. Object-level authorisation is the finding most often missed. A 200 for the wrong account is a fail. Security testing of that surface sits on API security testing.
Monitoring Hooks
What you can see after go-live: latency, errors and the quota a consumer actually hits. A build with no hook is a build you cannot operate. AWS and Azure are the platforms Vervali builds on.
Stay on This Page
You need the API and the tests that ship with it. A free review of one existing API is the first look. Book a call if the consumers and the systems they must talk to are already named.
REST or GraphQL, and How to Choose
A decision block for a buyer who has been told GraphQL is modern and does not know whether it fits. We help you choose. We do not sell GraphQL as a default because it is newer.
REST
Resources, status codes and caching that operators already understand. Cheaper to cache. Clearer for a consumer who only needs one object. The right default when many teams will call you and you need a contract they can read without a query language.
GraphQL
The client asks for the shape it needs. That moves complexity from the client to the server and to caching rather than removing it. The right buy when mobile clients are paying for round trips they cannot afford. Not the right buy because a slide said modern.
The Integration Surface
Named connections rather than a claim. For each, the failure mode that shows up is almost always a field mapping, an idempotency gap or a retry that duplicates a transaction. Full ERP suites sit on ERP and CRM development. This page is the API between those systems.
ERP and Finance
Orders, stock and the posting that has to happen once. A retry that creates a second invoice is the finding. The manufacturer sales-operations work sat in this shape: 40% less manual stock reconciliation when the old record and the new process finally agree.
Payments
Authorise, capture, refund and the webhook that never arrives. Idempotency is the control. PCI DSS testing of software that touches payment data sits on compliance testing. We test those controls. We do not issue a PCI certificate.
Identity and SSO
Tokens, roles and the account a second user should not see. Object-level access is the case. Bank onboarding work sat in this shape. We will not invent an identity product we do not run.
CRM
Lead, contact and the field that two systems spell differently. Mapping is the work. A 200 with the wrong owner is a fail. Stay here when CRM is a consumer, not the product you are buying.
Logistics
Status events, duplicates and the scan that arrives twice. Retry without an idempotency key is how you ship the same carton twice on paper. Stay here when the event bus is the product.
Messaging
Push, email and the template that still has last week's amount. Delivery is not the same as the payload being right. Deep links from those messages sit on mobile application testing when the journey is an app.
Security by Default
What is built in rather than added: authentication and authorisation at object level, input validation, rate limiting, secrets handling and logging that does not leak. OAuth and JWT sit in the quote when those are the protocols you already run. We will not invent a protocol as a guarantee.
Testing of that surface, including the OWASP API Top 10 on agreed in-scope endpoints, sits on API security testing, with 100% coverage of that set. We do not claim certified security staff. We test those APIs. We do not issue a certificate. Book a call if the consumers who must not see each other are already named.
Proof From Delivery, Not a Standalone API Logo Wall
The API and integration layers of ERP, banking and fintech engagements, described by sector. They are not a claim those were standalone API-only jobs. If the job is only the API, that is still this page.
India · two leading private-sector banks
Loan processing and onboarding depended on the integrations behind the screens. After: 60% faster loan processing, 50% less agent onboarding time, and 100% compliance on the controls named in that work. Identity and payment APIs were part of that estate.
60% faster loan processing50% less agent onboarding timeIndia · manufacturer · sales-operations platform
40% less manual stock reconciliation when the old record and the new process finally agree. That is an integration and data problem as much as a screen problem. Field mapping and a retry that must not duplicate a posting are the API work.
40% less manual stock reconciliationUAE · SME finance platform
Automation on repeatable finance journeys, including the APIs those journeys call. After: 40% less testing time, and 98% user satisfaction. Identity and payment integrations were in that estate. They stay unnamed.
40% less testing time98% user satisfactionFrequently Asked Questions
Designing and building REST and GraphQL APIs and the integrations behind them: ERP, payment, identity and CRM connections, versioning and documentation, authentication and rate limiting. Every API ships with contract tests, security tests and load tests written by our own QA team. Method for proving it sits on API testing services. A free review of one existing API is the first look. Book a call if the systems that will not talk are already named.
REST and GraphQL as the defaults on this page. Integration layers between systems that were never designed to talk, and the back ends behind mobile and web products. SOAP sits in the quote when you named it. We will not invent a protocol catalogue as the default. Custom software around those APIs sits on custom software development. Book a call if the consumers are already named. A free API review is the first look.
REST when many teams will call you and you need a contract they can cache and read without a query language. GraphQL when mobile clients are paying for round trips they cannot afford. GraphQL moves complexity from the client to the server and to caching rather than removing it. We help you choose. We do not sell GraphQL as a default because it is newer. Book a call if you already know which one you are not buying.
Yes. Contract tests, security tests and load tests, written by our own QA team, ship with the API. That is the differentiator. Method sits on API testing services. Functional API testing is one layer of that pack. API security testing is the OWASP API Top 10 slice. We do not sell those URLs as two invoices for the same week unless you asked for both. Book a call, or start with a free review of one existing API.
A versioning policy and a deprecation path with notice periods, written down before the first consumer, and shipped with the build. An experienced integration buyer uses this question to judge whether the vendor has done this before. A silent break is a fail. Stay here when that path has to exist. Book a call if consumers are already live on an older version. A free API review is the first look at what you already published.
Authentication and authorisation at object level, input validation, rate limiting, secrets handling and logging that does not leak, built in rather than added. OAuth and JWT sit in the quote when those are the protocols you already run. Testing of that surface sits on API security testing, with 100% coverage of agreed in-scope. We do not claim certified security staff. Book a call if the accounts that must not see each other are already named.
Yes, on the systems you named. ERP and finance, payments, identity, CRM, logistics and messaging. The failure is almost always a field mapping, an idempotency gap or a retry that duplicates a transaction. Full ERP suites sit on ERP and CRM development. This page is the API between those systems. We will not invent a logo wall we cannot evidence. Book a call once the systems are written down. A free API review is the first look.
Clutch lists Vervali at $25 to $49 per hour. We do not invent a project total. Price follows the number of consumers, the integrations you named, and whether contract, security and load tests sit in the same build. A free review of one existing API is how we see the surface. Book a call once the systems are written down. We will not invent a typical-engagements-start-at band we cannot evidence.
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