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API Development & System Integration
Make your systems talk to each other reliably.
APIs, middleware and integrations that connect ERP, CRM, e-commerce, payments and partners.
- Free consultation and estimate
- You own the source code
- Support after launch
Built with
Overview
What this service covers
Most businesses run on several systems that were never designed to work together. Integration turns disconnected tools into one operating environment.
We design APIs and middleware that move data reliably between systems — with validation, retries, monitoring and clear ownership of each interface.
No double entry
Data entered once flows everywhere it is needed.
Reliable delivery
Retries, idempotency and alerting handle real-world failures.
Clear documentation
Every interface is documented for future teams.
Secure access
Authentication, rate limiting and audit logging on every endpoint.
What we deliver
Our API Development & System Integration services
The building blocks of our API Development & System Integration engagements, scoped to what your business needs.
- 01
API design & development
Well-documented, versioned APIs for internal and partner use.
- 02
ERP & accounting integration
Tally, SAP, Oracle, Zoho Books and custom ERPs.
- 03
E-commerce & marketplaces
Shopify, WooCommerce, Amazon, Flipkart order and stock sync.
- 04
Payments & banking
Razorpay, PayU, UPI, bank reconciliation feeds.
- 05
Government & compliance
GST, e-invoicing, e-way bill and DigiLocker APIs.
- 06
Legacy connectivity
Adapters for databases and file-based systems.
Technology
Tools and platforms we use
Chosen per project for your existing systems, team skills and long-term maintainability. Full technology stack
- REST
GraphQL
Node.js
.NET- Message queues
- Webhooks
- OAuth 2.0
How we deliver
From first call to go-live, with no surprises.
The same four-stage process runs every engagement, sized to the project. You see progress at every stage.
- 01
Discover
Understand business goals, workflows and requirements.
- 02
Design
Architecture, UX/UI and technical planning.
- 03
Build
Engineering, integrations, testing and iteration.
- 04
Launch & Scale
Deployment, monitoring, optimization and long-term support.
Use cases
Where this makes a difference
Typical problems clients bring to us, and the kind of solutions we deliver.
- E-commerce orders into ERP and Tally
- CRM to WhatsApp and email automation
- Dealer portal connected to inventory
- Payment gateway reconciliation
- GST e-invoice generation from billing
Industries we apply this in
Engagement models
Work with us the way that suits you
Pick a model now and switch later if your needs change.
Fixed-scope project
Agreed scope, timeline and price. Best when requirements are clear and you want cost certainty.
- Detailed estimate up front
- Milestone-based payments
- Change requests priced openly
- Most popular
Dedicated team
Engineers who work only on your product, managed by you or by us. Best for ongoing development.
- Scale the team up or down
- Daily stand-ups and sprint demos
- Monthly billing
Time & material
Pay for the hours worked. Best for evolving products, enhancements and support.
- Start quickly
- Weekly timesheets
- Change priorities any time
Case studies
Related work
FAQ
API Development & System Integration: common questions
Answers to what clients usually ask before starting.
Yes, provided the vendor offers an API, database access or file exports. We handle the vendor coordination where needed.
Related services
Often combined with
Custom Software Development
Applications designed around your processes, workflows and operational requirements.
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AI Automation
Workflow automation combining AI, integrations and rules to remove manual, repetitive work.
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ERP Development
Connected ERP systems for finance, inventory, production, sales and operations.
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Contact
Let’s build something that works for your business.
Tell us about your requirement — a new system, an integration, infrastructure or support. We’ll come back with a clear next step.
Office
Office No. 4, Pankaj Plaza, Plot No. 7, Pocket 7, Sector 12, Dwarka, New Delhi, India 110078Mindware Infotech — a wholly owned subsidiary of Mindware