Custom API Development & Integrations
Stop copying data between different software manually. We build secure, custom APIs and bridge your web applications, CRMs, and payment gateways into one unified automation flow.
Is This Right For You?
We only partner with brands we can guarantee results for.
Who This Is For
- Businesses ready to dominate their niche online
- Startups building MVPs or SaaS platforms
- E-commerce stores wanting high-conversion design
Who This Is NOT For
- Those wanting a cheap template copy-paste site
- Clients expecting a full project in 24 hours
- Brands with zero defined identity or goals
When businesses expand, they run into communication barriers between their tools. At SRJ Nexus, we design clean, documented REST and GraphQL APIs that sync databases, payment endpoints, lead forms, and customer dashboards smoothly.
Real Results, Fully Integrated Workflows
- Bespoke REST & GraphQL APIs: Coded in Node.js or Python, optimized for speed and payload compression.
- Secure Webhook Routing: Sync inventory, orders, and leads instantly between systems.
- Third-Party Connections: Integrate ERPs, CRMs (HubSpot, Zoho), shipping providers, and gateways.
Project Scope Builder
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No Payment Required
How We Deliver
No guessing. A transparent roadmap of what happens after you start.
Day 1: Kickoff Call
Align on goals, strategy, and project requirements.
Day 3: Blueprint & Draft
We begin executing and share the first draft for review.
Final Delivery
Refined and delivered with quality assurance.
Explore Services
Digital Marketing & Advertising
Development & Website Design
- Custom Website Design & Development
- WordPress Design & Development
- E-Commerce Development (Shopify/WooCommerce)
- Custom E-Commerce Platform
- Web App Development
- SaaS & Custom Software Development
- Domain Name Setup
- Domain & Hosting Setup
- Google Workspace & Custom Email Setup
- Custom Software Development
- Cloud Infrastructure & DevOps Deployment
- Custom API Development & Integrations
- Payment Gateway Integration
- Website Maintenance