01
Requirement & Schema Design
We audit your systems, outline data mappings, and define OpenAPI endpoint schemas.
API Development & Integration Services
API Development & Integration
Looking for a reliable API development company? Bridging legacy platforms, distributed cloud microservices, and third-party SaaS platforms requires high-performance integration layers. As a premier API integration company, we build secure, well-documented, and low-latency API layers tailored to your ecosystem. Whether you need an integration development team to decouple monolith architectures using event-driven broker systems or a trusted partner to design GraphQL/REST endpoints, we integrate custom software with cloud infrastructure and custom software development. We serve globally as a premier provider in the USA, India, Dubai, and Abu Dhabi.
REST & Event-driven
Legacy Modernization
Secure Integrations
120+
APIs Deployed
25M+
Daily Requests
<120ms
Response Latency
99.99%
Gateway SLA
Comparison
Bespoke API Gateway vs Legacy Middleware
Discover why custom API architectures deliver a competitive edge over rigid integration middleware platforms. Explore our custom software development services to learn how we build models.
| Aspect | Legacy Middleware | Bespoke API Architecture |
|---|---|---|
| Custom Logic Mapping | Rigid visual blocks, limited custom code | Custom backend handlers & payload modifiers |
| Network Latency | High middleware routing delays | Sub-10ms direct VPC cloud endpoints |
| Running Expenses | Per-execution tiers & high annual plans | Flat serverless cloud compute fees |
| Event Pub/Sub | Batch processing or basic triggers | Real-time streamings (Kafka/RabbitMQ) |
| Security Control | Shared multi-tenant gateway servers | Isolated VPC networks, custom rate limits |
| Code Ownership | Locked in vendor dashboard tool configurations | 100% repository code ownership |
| Compliance Audits | Third-party cloud logs dependencies | Detailed audit trails logging setup (SOC2, GDPR) |
Custom API architectures eliminate ongoing middleware overheads and allow you to build proprietary business value.
Services
Our API & Integration Offerings
We handle the complete integration lifecycle from endpoint schema mapping and protocol designs to cloud deployments.
REST & GraphQL API Design
Design and implement clean, versioned RESTful or GraphQL APIs with comprehensive, auto-generated documentation to connect your systems securely.
- RESTful/GraphQL API endpoints design
- Self-documenting Swagger & Postman setup
- Structured JSON & XML payload handlers
- Dynamic data sorting & paging queries
- Backward compatibility version controls
Event-Driven & Messaging Systems
Implement high-throughput event pub/sub messaging patterns using brokers to decouple systems and process data in real time.
- Apache Kafka event pipeline streamings
- RabbitMQ & AWS SQS queue managers
- Asynchronous webhooks callbacks engine
- Fault-tolerant dead letter queues (DLQ)
- Real-time event synchronization triggers
Legacy Modernization Wrappers
Wrap outdated monolith frameworks and SOAP systems inside fast, lightweight JSON API gateway layers to connect modern apps safely.
- Monolith decomposition API wrappers
- SOAP-to-REST translation mapping runs
- File-based data exchange modernizations
- Secure backend reverse-proxy systems
- Incremental legacy database sync triggers
Third-Party API Integrations
Connect your custom applications with leading CRM systems, financial accounts, warehouse databases, and payment processors.
- Stripe payment integration workflows
- HubSpot & Salesforce connector paths
- SAP & Oracle ERP direct integrations
- Shipping carrier label webhook managers
- OAuth2 third-party user log loops
Secure API Gateways & Access
Protect your application backend interfaces against unauthorized access and malicious request surges using modern rate limiting controls.
- Secure OAuth2/JWT credentials setup
- Dynamic rate limiting & IP throttlings
- VPC sandboxed API endpoint mappings
- SAML & Single Sign-On (SSO) links
- Web Application Firewall (WAF) rule sets
Microservices & Service Mesh
Deploy gRPC protocols and Service Mesh tools to orchestrate communication between internal containers and cloud microservices.
- High-throughput gRPC service paths
- Docker & Kubernetes container networks
- Secure service-to-service TLS links
- Service discovery & registry configurations
- Distributed tracing setup indicators
Real-Time WebSocket Streams
Build lightweight WebSocket servers that stream continuous system analytics and real-time alerts to frontend dashboards.
- WebSocket streaming connections setup
- Sub-100ms message delivery updates
- Real-time activity logs broadcasting
- Automatic socket retry loop configurations
- Low-overhead streaming data formats
Automation & Mock Testing
Deploy automated integration test suites checking endpoint schema, authentication security limits, and response codes.
- Automated unit & integration test suites
- Mock API server configuration maps
- Endpoint load and latency validation runs
- CI/CD testing pipeline integration triggers
- Automated OpenAPI schema validation checks
Lifecycle
Our Integration Lifecycle
We follow a structured and agile approach to deliver secure, scalable, and business-focused API solutions. Our process integrates with DevOps automation and cloud infrastructure for seamless deployment.
02
Protocol & Security Mapping
We select protocols (REST, GraphQL, gRPC) and map out token authentication rules.
03
Gateway & Caching Setup
We configure API gateways, VPC routing rules, and Redis caching configurations.
04
Core Endpoint Development
We write clean, modular controller code and integrate backend database layers.
05
Vulnerability & Load Testing
We run automated endpoint tests, verify security boundaries, and conduct load tests.
06
Production VPC Deployment
We package service code into Docker containers and deploy them to secure virtual clouds.
07
SLA Monitoring & Maintenance
We track response times, analyze logs, and update libraries to guarantee a 99.99% SLA.
Why Choose Intellosoft for API & Integration Services
We combine deep backend expertise with modern gateway structures, cloud architecture, DevOps automation, and product strategy to deliver APIs that create measurable business impact.
120+
APIs Deployed
25M+
Daily Requests
<120ms
Response Latency
99.99%
Gateway SLA
Benefits
Benefits of API Development & Integration
Building custom-tailored API solutions bridges how systems operate, automates workflows, and secures data. From mobile systems to web platforms, custom API architecture delivers measurable value.
01
Unified System Connectivity
Eliminate scattered data silos by bridging CRM, ERP, and payment networks into a single, cohesive software environment.
02
Automated Data Workflows
Sync business records automatically across systems, eliminating manual data entry errors and saving administrative hours.
03
Scalable Microservices
Package backend logic into containerized microservices communicating via event queues that scale independently under heavy load.
04
Accelerated Product Scaling
Add new web pages, mobile apps, or partner features quickly by building on top of stable, reusable API layers.
05
Enhanced Security Controls
Encrypt corporate data exchanges and regulate system access using API tokens, TLS protocols, and isolated VPC networks.
06
Real-Time Business Metrics
Monitor operational performance, database activity, and business transactions as they happen using live WebSocket dashboards.
Technologies We Use
RESTful APIs
API ProtocolsGraphQL API
API ProtocolsgRPC Protocol
API ProtocolsWebSockets
API ProtocolsNode.js
Backend & QueuesPython FastAPI
Backend & QueuesApache Kafka
Backend & QueuesRabbitMQ
Backend & QueuesOAuth 2.0
Security & AuthJWT Tokens
Security & AuthAWS Cognito
Security & AuthSAML SSO
Security & AuthAWS API Gateway
Gateways & HostingNginx Proxy
Gateways & HostingDocker Engine
Gateways & HostingKubernetes
Gateways & HostingOur System Integration Capabilities
We handle the complete development lifecycle from initial payload scoping and mapping to final deployment.
Low Latency Gateway
Deploy AWS API Gateway or Nginx reverse proxies with Redis configurations to process requests in sub-120ms.
Secure JWT/SSO logins
Configure secure JWT loops and SAML integration blocks to manage access permissions across enterprise platforms.
High-Throughput Queues
Orchestrate Apache Kafka or RabbitMQ event buffers to manage high-volume asynchronous message queues.
OpenAPI Documentation
Produce self-documenting Swagger pages and interactive Postman collections for rapid developer integrations.
Automated Mock Testing
Establish end-to-end integration tests that mock external endpoints inside continuous CI/CD pipelines.
Observability Logging
Monitor request counts, response codes, memory spikes, and SQL slow-log traces in real time.
Models
Engagement Models
Flexible engagement options designed to match your project requirements, budget, and timeline.
Dedicated Team
Build a dedicated team of API engineers, database architects, and security deployment specialists.
Fixed Price Projects
Ideal for integrations with clearly defined mappings, swagger specifications, and endpoints.
Time & Material
Perfect for complex ecosystems and evolving SaaS platforms where flexible integrations are key.
Technical Consulting
Need guidance before building? Our consultants help design your API routing and database diagrams.
Industries We Serve
Healthcare
Fintech
E-Commerce
Logistics
SaaS
Education
Manufacturing
Real Estate
Legal
Insurance
Healthcare
Fintech
E-Commerce
Logistics
SaaS
Education
Manufacturing
Real Estate
Legal
Insurance
Success Stories
Real results from businesses that chose API & Integration services with Intellosoft.
High-Throughput Fintech Hub
Challenge
A financial organization required a secure gateway infrastructure to process and audit millions of daily transaction queries.
Solution
Designed and built a distributed Golang API connected to Kafka queues and secure VPC endpoints.
Outcome
- 25M daily transactions processed
- 99.99% API gateway uptime SLA
- Sub-100ms endpoint response speeds
- Zero data security incidents logged
Real-Time Payment Integration
Challenge
An e-commerce marketplace needed to sync live cart purchases with third-party logistics and CRM platforms.
Solution
Implemented webhook handlers and microservices connecting Stripe payment alerts with HubSpot and shipping databases.
Outcome
- 100% automated invoicing loops
- Sub-150ms database updates
- Zero lost order sync payloads
- 98% customer satisfaction rating
SOAP to REST Modernization
Challenge
A logistics provider required a clean web platform connection to access legacy SOAP-based warehouse databases.
Solution
Created an AWS API Gateway wrapper translating older XML structures into modern, optimized JSON endpoints.
Outcome
- Legacy systems modernized cleanly
- 40% API payload size reduction
- Auto-generated API schema pages
- Simplified partner developer integrations
Client Stories
What Our Clients Say
Real feedback from teams we've shipped with—on time, on budget, and built to last.
“Intellosoft transformed our business with their innovative solutions. Their team is professional, responsive, and truly understands our needs.”
P
Pawan Pathak
GM, Tulip Inn
“Working with Intellosoft was a game-changer for our startup. They delivered beyond our expectations and within budget.”
V
Vasant Patel
CEO, Space Realty
“The best technology partner we have worked with. Their expertise and dedication to excellence are unmatched.”
S
Susmita Deb
HOD, World Way
Frequently Asked Questions
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USA delivery hubs
Engineering centers
UAE delivery hubs
Engineering centers
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MVP Development Services
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Custom Software Development
End-to-end software built around your workflows.
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Cloud Services
Cloud strategy, migration, and reliable infrastructure.
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Flutter App Development
Cross-platform Flutter apps for Android, iOS, Web, and Desktop.
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Mobile App Development
iOS, Android, and cross-platform apps for real users.
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IT Consulting Services
Roadmaps, optimization, and digital transformation.
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Web Development
SEO-friendly websites and scalable web applications.
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DevOps & Automation
CI/CD, infrastructure automation, and observability for fast releases.
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Ready to Connect Your
Distributed Systems?
Partner with Intellosoft Infotech and design custom API layers and webhook sync triggers built for lightning-fast speeds and high stability. Let's map out your interface.
Schedule a Free Architecture Consultation