In the modern software landscape, no application exists in isolation. APIs are the connective tissue of digital business — they allow your mobile app to talk to your backend, your website to pull data from your CRM, and your payment system to communicate with your accounting software. At Fillicore Technologies in Salem, we design and build APIs that are fast, secure, well-documented, and built to scale.
For businesses across Tamil Nadu looking to modernize their tech stack, a well-designed API strategy is the foundation. Whether you're building a new SaaS product, connecting legacy systems, or opening your platform to third-party developers, our API development services ensure your data flows seamlessly and securely.
01 — API Styles
Different problems demand different solutions. We help you pick the right API paradigm for your use case.
The industry standard for web services. Resource-based architecture with HTTP methods, JSON responses, and stateless communication. Perfect for CRUD operations, public APIs, and microservices with excellent caching support.
Query exactly the data you need — nothing more, nothing less. Ideal for complex frontends, mobile apps with bandwidth constraints, and applications where multiple data sources need to be aggregated into a single request.
Event-driven, real-time notifications that push data to your systems the moment something happens. Perfect for payment confirmations, order updates, and keeping distributed systems in sync without polling.
02 — Security & Auth
Every API we build is secured with industry-standard authentication and authorization protocols.
Industry-standard authentication with OAuth 2.0 flows for third-party access and JWT tokens for stateless session management. We implement refresh token rotation, token revocation, and scope-based permissions for granular access control.
Protect your APIs from abuse with intelligent rate limiting. We implement sliding window algorithms, tiered rate limits per API key, and graceful degradation that keeps your services responsive even under heavy load from Salem-based and global clients.
Centralized API gateway with request routing, load balancing, SSL termination, and real-time analytics. Monitor response times, error rates, and usage patterns with dashboards that give you complete visibility into your API ecosystem.
03 — Features
Every API we deliver includes these essential capabilities.
Auto-generated, interactive API documentation with Swagger UI. Your developers and partners can explore endpoints, test requests, and understand schemas without reading a single PDF.
Every request is validated against strict schemas. SQL injection, XSS, and malformed payloads are caught before they reach your business logic, keeping your data safe.
Seamless integration with payment gateways, CRMs, ERPs, shipping APIs, SMS providers, and any service your business depends on. We build resilient connectors with retry logic and fallback mechanisms.
04 — Our Process
From requirements gathering to deployment — a structured, transparent approach.
Define endpoints, data models, auth flows, and integration points.
OpenAPI spec, request/response schemas, and versioning strategy.
TDD approach with unit, integration, and load testing at every stage.
Penetration testing, auth validation, and OWASP compliance checks.
CI/CD deployment with real-time monitoring and alerting.
05 — FAQ
REST is ideal for simple CRUD operations and when you need caching and broad tooling support. GraphQL shines when your frontend needs flexible queries, you want to reduce over-fetching, or you have multiple clients consuming different data shapes. We often recommend REST for public APIs and GraphQL for complex internal applications.
We implement multiple layers of security including OAuth 2.0 and JWT-based authentication, API key management, rate limiting, input validation, CORS policies, request signing, and IP whitelisting. Every API we build follows OWASP API Security Top 10 guidelines.
Absolutely. We specialize in integrating with legacy systems, ERPs like SAP and Tally, CRMs like Salesforce, payment gateways, shipping providers, and any third-party service with an API. We build middleware layers when direct integration isn't possible.
Phone
+91 00000 00000Location
Salem, Tamil Nadu · Working Globally