Expletech are experts in designing and developing scalable APIs that ensure seamless integration and high system performance.
API Development & System Integration
We build reliable, documented APIs and integrate third-party services to create seamless, automated data flows in your product.
Disconnected systems destroy efficiency
When your software applications can't communicate, manual data entry, processing delays, and system errors take over, blocking business scaling.
Before Integration
Employees waste hours manually copying data between CRM, ERP, and databases
Delayed updates lead to out-of-sync inventory, billing, or shipping reports
Relying on closed platforms prevents you from choosing better software tools
Rigid integrations break instantly when minor API updates occur on third-party apps
After API Integration
Automated background data flows connect all services in real-time
Unified data warehouses sync billing, customer data, and analytics instantly
Open API architecture allows seamless connecting of any new tools or partners
Robust, versioned APIs with automated monitoring prevent downtime and failures
API modules we engineer for you
We design reliable, scalable endpoints and data connectors tailored to your business infrastructure.
RESTful API Design
Industry-standard JSON endpoints documented using OpenAPI/Swagger, with validation built in.
GraphQL Interfaces
Flexible queries allowing frontend clients to query exactly the data they need, optimized via DataLoader.
Real-Time WebSockets
Bi-directional connections for instant messaging, live tracking, and real-time dashboard updates.
Payment Gateways
Secure integrations with Stripe, PayPal, Apple Pay, and local acquirers including subscription handling.
SaaS & AI Connectors
Integrations with OpenAI, HubSpot, Salesforce, AWS, and communication APIs like Twilio.
Security & Gateways
JWT/OAuth 2.0 authorization, Rate Limiting, CORS headers, and API gateway setup.
Steps to build your API
A systematic engineering workflow from architectural blueprint to high-load production release.
Discovery & API Design
We audit your database structures, define entities, and design endpoints using Swagger schema.
Core API Development
Writing type-safe, optimized code on NestJS or Node.js, fully covered by unit tests.
Integrations & Security
Connecting third-party platforms, setting up JWT auth, rate-limiting, and error tracking.
CI/CD & Production Launch
Deploying into scalable cloud infrastructure, configuring performance monitoring and logs.
Real performance and sync efficiency
Natively optimized APIs reduce latency, automate data transfer, and lower operational overhead.
Flexible API development plans
Pricing depends on the number of endpoints, complex integrations, and expected request volume.
API Integration & Custom Development
up to $6,000
Custom endpoints · Swagger/OpenAPI docs · third-party integrations · database integrations
What determines your price
- Number of custom endpoints & data models
- Integration complexity (custom auth, external APIs, legacy systems)
- Performance & throughput requirements (rate limits, caching)
- Compliance & data protection standard requirements
Reliable data sync and maximum security
We write clean, documented backend code and stand behind our work with strict guarantees.
99.99% Uptime Guarantee
We configure containerized clouds with auto-scaling to prevent crashes under traffic surges.
OpenAPI Documentation
Every project comes with live Swagger docs and Postman collections, making frontend connection easy.
Enterprise-Grade Security
Automated security audits ensure JWT tokens, passwords, and user data are encrypted properly.
Active SLA Maintenance
We provide dedicated maintenance to update webhooks when third-party services update their systems.
Other software solutions
Explore complementary services to build a comprehensive backend and web presence.
Frequent Questions
Answers to questions that arise before any API project.
Ready to build a reliable API?
Get a free consultation and project estimate from our API architects.