Connect Everything With Clean APIs and Microservices
Citytech's API and microservices services break monoliths into modular, independently scalable services and connect your systems with clean, secure, well-documented APIs — the backbone of a modern, integrated business.
View our success storiesCitytech API & Microservices at a Glance
1,000+
APIs Delivered
Across web, mobile, and integrations
50+
Systems Integrated
Modern and legacy alike
99.9%
Uptime
On distributed architectures
REST · GraphQL · gRPC
Protocol Coverage
The right protocol for each use case
12+
Years of Engineering
Building APIs and distributed systems
4.9/5
Client Satisfaction
Rated across post-delivery reviews
Our API & Integration Stack
Citytech builds on proven standards and tools for APIs and microservices — designed for performance, security, and easy integration.
API Standards
REST, GraphQL, gRPC, WebSockets
We build APIs on the right protocol for each use case.
Microservices
.NET, Node.js, Java, Spring Boot
We engineer modular services that scale and deploy independently.
API Management
Azure API Management, Kong, Apigee
We secure, version, and govern APIs at scale.
Integration & Messaging
Kafka, RabbitMQ, Azure Service Bus
We connect systems with reliable, event-driven messaging.
Containers & Orchestration
Docker, Kubernetes
We deploy and scale services in containers.
Security & Gateway
OAuth2, JWT, API gateways
We protect every endpoint with modern authentication and gateways.
API & Microservices Capabilities
Design and build clean, documented APIs for any consumer.
What we offer?
- REST & GraphQL APIs
- API design
- Documentation
- Versioning
Decompose applications into modular, scalable services.
What we offer?
- Domain decomposition
- Service design
- Orchestration
- Independent deployment
Connect internal and third-party systems into one ecosystem.
What we offer?
- Third-party integration
- Legacy integration
- Data sync
- Middleware
Secure, govern, and monitor APIs across their lifecycle.
What we offer?
- API gateway
- Rate limiting
- Versioning
- Analytics
Build real-time, loosely coupled systems with messaging.
What we offer?
- Event streaming
- Message queues
- Pub/sub
- Real-time processing
Wrap and expose legacy systems through modern APIs.
What we offer?
- Legacy API layer
- Re-architecture
- Performance tuning
- Security hardening
Integration Outlook
Citytech builds toward where integration architecture is heading — not where it's been.
API-First Design
APIs designed before implementation.
Event-Driven Architecture
Real-time, loosely coupled systems.
GraphQL Adoption
Flexible querying for modern front-ends.
Microservices Mesh
Service meshes managing service-to-service traffic.
API Marketplaces
APIs packaged and offered as products.
Serverless APIs
Endpoints that scale to zero.
iPaaS & Low-Code Integration
Faster integration with less code.
API Security by Design
Zero-trust protection at every endpoint.
AsyncAPI & Streaming
Standards for event-driven APIs.
Composable Architecture
Business capabilities assembled from services.
Observability for APIs
Full tracing across distributed calls.
AI-Ready APIs
Interfaces built for AI agents and tools.
The Business Value of APIs & Microservices
Tightly coupled, disconnected systems slow every change and trap your data. APIs and microservices unlock both — letting systems talk, teams move independently, and capabilities scale on their own.
Faster Innovation
Teams build and deploy services independently.
Effortless Integration
Connect any system, internal or third-party.
Independent Scaling
Scale only the services that need it.
Reuse & Speed
Build once, reuse across products and channels.
Future-Proof Architecture
Add or swap capabilities without rework.
Our Process
Why Choose Citytech for API & Microservices
Distributed systems are powerful but unforgiving — they demand sound architecture and disciplined engineering. Citytech designs APIs and microservices that are secure, observable, and built to scale, with the integration expertise to connect anything to anything.
Architecture Expertise
Engineers who design distributed systems that hold up at scale.
Integration Depth
Proven connections across modern and legacy systems.
Security & Governance
Every API protected, versioned, and monitored.
Built to Scale
Services engineered to grow independently.
