Service

Enterprise API & System Integrations

Eliminate data silos, spreadsheet reconciliations, and manual double-entry. We engineer secure, fault-tolerant REST/GraphQL APIs and automated data pipelines that connect your ERP, accounting software (QuickBooks, NetSuite, SAP, Tally Prime), banking rails, and government compliance portals.

Schedule an Integration Consultation Read Tally & QuickBooks Sync Case Study →

End-to-End Orchestration

Connect your mission-critical software systems seamlessly

When software systems operate in isolation, your employees become human copy-paste glue. We build automated middleware pipelines that synchronize transactions with sub-second reliability.

Custom RESTful & GraphQL API Architecture

We design clean, versioned, and documented API contracts adhering to OpenAPI 3.0 / Swagger standards. Engineered for high concurrency with sub-second response times, granular OAuth 2.0 / JWT token authentication, and robust JSON schema input validation.

Tally Prime & Legacy ERP Synchronization

Bridge modern cloud web applications with on-premise accounting software like Tally Prime (via XML over TCP or ODBC), QuickBooks Online, and SAP (via BAPI/RFC). Automated voucher posting, customer ledger synchronizations, and inventory stock updates without human intervention. Explore our Tally Migration Technical Guide.

Automated GST, EU/UK VAT & Global Tax e-Invoicing

Direct integration with government-authorized GSP portals for Indian GST e-invoicing & e-Way bills, alongside Avalara, EU/UK VAT, and GCC ZATCA compliance. One-click real-time IRN generation, digital signature verification, signed QR code watermarking on customer PDFs, and automated e-way bill dispatches synced to vehicle numbers.

Payment Gateway, UPI & Banking Rail Integrations

Integrate Razorpay, Cashfree, PayU, and Stripe. Support dynamic UPI QR generation, recurring subscription e-mandates, automated split vendor payouts, and ICICI/HDFC corporate banking APIs for automated NEFT/RTGS salary and vendor disbursements.

Biometric Attendance & Hardware Device Sync

Connect physical biometric fingerprint and facial recognition attendance devices (eSSL, ZKTeco, Matrix) directly to cloud payroll software. Punch records stream in real-time to automate attendance rosters, overtime logs, and statutory PF/ESIC deductions alongside US W-2, UK PAYE, and GCC WPS compliance. Read our Biometric Payroll Guide.

Event-Driven Webhook Queues & Dead-Letter Monitors

Build fault-tolerant message queue pipelines with Redis, RabbitMQ, or AWS SQS. Third-party webhook deliveries are validated with HMAC signatures, deduplicated via idempotency keys, and retried automatically with exponential backoff and Slack error alerts.

Engineering Discipline

How we ensure zero data loss across integrated software

Third-party APIs fail, rate limits trip, and networks drop. We design middleware that guarantees transactional integrity.

1. Idempotency & Two-Phase Commits

Every financial transaction and voucher creation request carries a cryptographically unique idempotency key. If a payment gateway or network timeout causes a retry, our middleware safely deduplicates requests, preventing duplicate debits or double vouchers.

2. Asynchronous Queues & Circuit Breakers

When upstream services like government tax servers experience downtime, our circuit breaker patterns gracefully queue outgoing requests without degrading your main customer web app. Backlogged jobs are automatically replayed when servers recover.

3. Immutable Audit Logs & Telemetry

Every inbound webhook payload and outbound API response is logged with request headers, response status codes, and execution timestamps into searchable JSON audit stores, enabling fast troubleshooting and statutory audit compliance.

Enterprise Integration Reference

For a wholesale distribution network with 4 regional hubs, we engineered a continuous bidirectional integration between their custom Laravel order portal and on-premise Tally Prime alongside QuickBooks Online and SAP. Inbound customer orders automatically generate Tally and ERP Sales Orders, check real-time stock levels across warehouses, calculate multi-state GST and EU/UK VAT, and post receipt vouchers upon payment confirmation, eliminating 12 hours of daily manual data entry.

Topical Clusters & Integration

Explore connected engineering practices

Integrate your software systems with our core development and cloud capabilities.

Custom ERP Development →

Build centralized operational databases that serve as the authoritative single source of truth for your business.

B2B Platform Development →

Learn how we connect vendor bidding portals and buyer procurement catalogs to backend ERP ledgers.

Node.js & Python Engineering →

Build high-throughput microservices, WebSocket engines, and asynchronous ETL workers.

Cloud Architecture & DevOps →

Deploy API gateways, secure VPN VPC tunnels, and Redis queue workers on AWS and Azure.

Tally & QuickBooks Migration Guide →

Read our deep-dive architecture guide on migrating legacy Tally Prime and QuickBooks spreadsheets to scalable custom web ERPs.

Biometric Payroll Guide →

Discover how biometric hardware interfaces with statutory payroll calculations and compliance across PF, ESIC, US W-2, UK PAYE, and GCC WPS.

Frequently Asked Questions

Common questions about API and system integrations

We engineer automated synchronization agents that communicate with on-premise Tally Prime (via its native XML over TCP interface or ODBC connector) alongside cloud ERPs like QuickBooks Online, Oracle NetSuite, and SAP. The sync agent runs as a lightweight Windows background service or secure cloud webhook handler, querying pending orders or invoices from your cloud ERP via secure TLS REST APIs and programmatically injecting Sales, Purchase, Receipt, and Journal vouchers directly into accounting ledgers without requiring any manual export/import steps.
We integrate your billing software directly with government-authorized GSP (GST Suvidha Provider) gateways (such as Masters India, ClearTax, or direct NIC APIs) for Indian GST e-invoicing and e-Way bills, alongside global fiscalization engines like Avalara, Stripe Tax, EU/UK VAT portals, and GCC ZATCA. Whenever a commercial tax invoice is generated, the system transmits the JSON payload to the tax portal, receives the certified IRN and signed QR code, embeds them onto the customer PDF invoice, and simultaneously issues part-A and part-B e-Way bills.
We design all integration pipelines with strict idempotency keys and transactional database locks. Every API mutation carries a unique UUID idempotency header. If a network blip occurs between the gateway and our backend, re-transmissions are safely deduplicated at the Redis layer. Webhooks are validated with cryptographic HMAC-SHA256 signatures, logged to an immutable audit ledger, and processed through background queues.
Yes. We interface with biometric hardware (eSSL, ZKTeco, Matrix, Realtime) using push-data APIs, TCP socket listeners, or scheduled database extractors. Real-time employee punch logs flow directly into our payroll engine to automate shift overtime, late penalty deductions, and statutory PF/ESIC calculations alongside multi-country compliance for US W-2 / 1099, UK PAYE, and GCC WPS without manual spreadsheet manipulation.
We integrate Razorpay, Cashfree, PayU, and Stripe — supporting domestic UPI payment links, Google Pay, PhonePe, credit/debit cards, recurring subscription e-mandates, automated vendor split disbursements (marketplace payouts), and direct ICICI/HDFC bank API automated NEFT/RTGS payouts.

Tired of manual data entry and broken spreadsheets?

Consult with our integration engineers. We will analyze your system interfaces and design a fault-tolerant integration roadmap.

Request Integration Architecture Consultation