Software
API Development & Integration in the USA
Connecting the tools you already use, and building custom APIs when you need your own systems to expose data securely to others.
Quick Answer
ZAVYANS provides API Development & Integration for businesses across the USA, with a US office in Arlington, Virginia and delivery from our Islamabad team. The work typically covers webhook & automation setup, custom API development and third-party integrations, planned around local rules from the start, with reporting and invoicing in USD.
Why US businesses work with us
Scheduled calls in US time zones, plus written weekly reporting
Work planned around US privacy and accessibility rules from the start
One team running marketing, automation and software, instead of separate vendors
Reporting and invoicing in USD, with no local office overhead added to your cost
Why your systems need to talk to each other
Most businesses run several separate tools, a CRM, a website, an accounting system, a booking platform, that do not talk to each other by default. Staff end up copying data between them by hand, which wastes time and causes errors. API development and integration connects these systems so data flows automatically.
We build integrations between the tools you already use, and custom APIs when you need your own systems to expose data to others.
What's included
Custom API development
Building APIs that let your own systems, or partners, access your data securely.
Third-party integrations
Connecting your CRM, payment gateway, accounting or booking tools together.
API security
Making sure data shared between systems is properly authenticated and protected.
Webhook and automation setup
Triggering actions automatically when something happens in another system.
Documentation and support
Clear documentation so your team, or partners, can actually use what is built.
Legacy system integration
Connecting older systems that were not built to work with modern tools.
Working with US businesses
ZAVYANS has a US office in Arlington, Virginia, and our delivery team is in Islamabad, nine to ten hours ahead of the East Coast. We schedule calls within your business hours, send written updates so nothing waits a day, and report and invoice in USD. We don't have offices in individual US cities, and we say so plainly.
API Development & Integration rules in the USA
Websites and apps must handle personal data under state privacy laws such as the CCPA, and ADA accessibility lawsuits are common, so WCAG-aligned builds reduce risk.
What's different about API Development & Integration in the USA
US customers expect fast, accessible websites, and accessibility lawsuits under the ADA are common, so accessibility is part of the build, not an extra.
- WCAG 2.2 AA accessibility built in
- Payments through Stripe, PayPal, Square or Authorize.net, with state sales tax handled
- Privacy notices and cookie choices for states with their own privacy laws, such as California
Integration work that pays for itself
The value of integration work is usually easiest to see in hours saved: an order that used to be re-typed into three systems now flows automatically. We scope integration projects around where your team is currently doing the most manual, repetitive work.
Who we help
E-commerce
Connecting stores, payment gateways and inventory systems.
Healthcare providers
Connecting booking, records and billing systems.
Real estate agencies
Connecting CRM, listings and booking systems.
SaaS companies
Building APIs that let customers or partners integrate with your product.
How we work
- Step 1
Audit
We review what you have today against the result you actually want.
- Step 2
Build
Tracking, creative, pages or systems go in before spend or launch.
- Step 3
Launch and test
Work goes live and is tested in rounds with a clear weekly read-out.
- Step 4
Grow
Budget and effort follow what is actually producing results.
Frequently asked questions
Do you have an office in the USA?
No. We serve US businesses remotely from our offices in Islamabad, Pakistan and Arlington, Virginia (USA), with scheduled calls in your time zone, written weekly reporting and invoicing in USD.
Do you build custom APIs from scratch?
Yes, when you need your own systems to expose data securely to another system or partner.
Can you integrate with older, legacy systems?
Yes, we work with legacy systems, though the approach depends on what access they allow.
Can you connect tools we already use?
Yes, connecting existing tools like your CRM, payment gateway or accounting software is the most common request.
What rules apply to API Development & Integration in the USA?
Websites and apps must handle personal data under state privacy laws such as the CCPA, and ADA accessibility lawsuits are common, so WCAG-aligned builds reduce risk. We plan the work with this in mind, and you approve anything customer-facing before it goes live.
How do you keep integrated data secure?
Through proper authentication and access controls on every API connection we build.
Why choose ZAVYANS for API development?
We scope integration work around where your team is currently doing the most manual, repetitive data entry, so the value is measurable in time saved.
Which cities in the USA do you work with?
Businesses anywhere in the USA, including New York, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, San Antonio, San Diego, Dallas, Austin, Miami, Atlanta, Boston, Seattle and Denver. Campaigns and content can be targeted to specific cities or regions.
What do you need from me to start?
A list of the systems you want connected and the manual process you are trying to eliminate.
Do you provide documentation for our team?
Yes, clear documentation is part of every project so your team can maintain and extend it.
Which countries do you work in?
We work with clients across Pakistan, the United States, the United Kingdom, Canada, Australia, the UAE and Saudi Arabia.
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Let's build something
Ready to grow with API Development & Integration in the USA?
Tell us what you're trying to grow. We'll come back with a plan, not a sales pitch.
or email info@zavyans.com