Walter Technologies
API & Integrations

Stop moving data by hand between systems

We connect your CRM, ERP, accounting, ecommerce and payment systems so information flows automatically, without spreadsheets in the middle.

Talk Integrations
The problem

Disconnected systems create manual work and errors.

Every manual export-import between systems is a place where data goes stale or gets typed wrong.

We build an integration layer that keeps your systems synchronized in real time, so your team works from one source of truth.

What we deliver

01

REST & GraphQL APIs

Well-documented APIs designed for the systems that will consume them.

02

CRM & ERP Integrations

Two-way sync with the systems your business already runs on.

03

Payment Gateway Integration

Reliable, auditable payment flows.

04

WhatsApp Business Integration

Automated messaging tied into your actual workflows.

05

Ecommerce Integrations

Inventory, orders and fulfillment kept in sync across platforms.

06

Data Synchronization

Scheduled or event-driven sync between any two systems.

Capabilities

REST APIs
GraphQL
Webhooks
CRM integrations
ERP integrations
Accounting integrations
Ecommerce integrations
Payment gateways
WhatsApp Business integrations
Third-party SaaS integrations
Data synchronization

Typical use cases

CRM to accounting sync

Invoices and payments flow automatically between your CRM and accounting system.

Ecommerce inventory sync

Stock levels stay accurate across your storefront, warehouse and marketplace listings.

Third-party SaaS connections

Connecting tools that don't natively talk to each other into one working system.

How we work

01Map Systems
02Design
03Build
04Test
05Deploy
06Monitor
Technology we build with
Node.jsGoPHPRESTGraphQLAWSPostgreSQL

Frequently asked questions

Can you integrate with systems that don't have a public API?+

Often, yes — through database-level integration, file-based exchange, or browser automation where no API exists.

Who maintains the integration after launch?+

We can hand it off with documentation, or maintain it under an ongoing support arrangement — whichever fits your team.

Start a conversation

Ready to talk about api & integrations?

Tell us what you're building or automating. We'll help you determine the right technical approach.