API & System Integration Services

Connect software that wasn’t built to talk to each other. We build resilient middleware, custom microservices, and webhook transformers that sync data reliably between legacy ERPs, modern SaaS tools, courier APIs, and accounting software.

Category: Engineering & Data. Typical timeline: 2 - 4 Weeks. Ideal for: Mid-market businesses, distributors, and SaaS companies with complex tool stacks.

Benefits

  • Eliminate manual data imports and exports across departmental tools
  • Guaranteed bidirectional data synchronization with conflict resolution
  • Secure token encryption and rate-limit buffering
  • Zero downtime architecture with automatic retry dead-letter queues

Features

  • Custom Node.js / Python middleware proxies
  • Webhook listener hubs with cryptographic signature verification
  • Data mapping and schema transformation
  • Audit log tracking for every synchronized transaction

How we deliver it

  1. Schema & API Specification: Audit endpoints, data formats, authentication, and rate quotas.
  2. Data Transformation Design: Build mappings to convert fields and handle schema mismatches.
  3. Middleware & Queue Construction: Implement queue buffers to prevent endpoint overload and failures.
  4. End-to-End Stress Testing: Test high-volume edge cases and verify atomic rollback procedures.

Deliverables

  • Production middleware service and Docker setup
  • Secure webhook endpoints with signature validation
  • Detailed API mapping and data dictionary documentation
  • Automated health check and retry worker system

Technologies

Express / Node.js, Python FastAPI, PostgreSQL, Redis Queues, REST / GraphQL

Frequently asked questions

What is API & System Integration Services?
Connect software that wasn’t built to talk to each other. We build resilient middleware, custom microservices, and webhook transformers that sync data reliably between legacy ERPs, modern SaaS tools, courier APIs, and accounting software.
How long does API & System Integration Services take to deliver?
The typical timeline for API & System Integration Services is 2 - 4 Weeks, depending on scope and the systems that need to be connected.
Who is API & System Integration Services for?
Mid-market businesses, distributors, and SaaS companies with complex tool stacks.
What do I receive with API & System Integration Services?
Production middleware service and Docker setup; Secure webhook endpoints with signature validation; Detailed API mapping and data dictionary documentation; Automated health check and retry worker system.
Which technologies does NextCore BD use for API & System Integration Services?
Express / Node.js, Python FastAPI, PostgreSQL, Redis Queues, REST / GraphQL.