API Development & System Integrations
REST, GraphQL, SOAP, Kafka, gRPC — integrations designed for performance and scalable products.
We build reliable APIs and deep system integrations for companies — connecting internal tools, platforms, CRMs, ERPs, and external services into a structured, scalable ecosystem. From REST and GraphQL to event-streaming with Kafka and high-speed gRPC, our engineering team delivers secure, modern interfaces designed for enterprise workloads and long-term stability. Whether you need to integrate multiple systems, modernize legacy APIs, or build a new API layer for your product — we create solutions engineered for speed, security, and interoperability.
Why Companies Choose Us
What We Deliver
Custom API Development
- REST APIs with OpenAPI/Swagger
- GraphQL schemas and resolvers
- High-performance gRPC interfaces
- API gateways with throttling, rate limiting, quotas
- Versioning, monitoring, observability, lifecycle management
- Secure authentication flows (OAuth2/SSO/MFA)
Enterprise System Integrations
- ERP, CRM, HRM, accounting system integration
- Payment providers (Stripe-like, banking APIs, PSPs)
- Logistics platforms, inventory systems, booking engines
- Identity management (Keycloak, CAS, OpenID, SAML)
- Marketplace integrations (Google, Meta, Ozon, etc.)
- Webhooks, callback systems, event pipelines
Event Streaming & Messaging Systems
- Kafka pipelines for real-time or batch events
- Async workers & microservice communication
- Transactional flows designed for high event frequency
- Outbox patterns and message deduplication
- Distributed workflows and reliable retries
- Real-time notifications and event broadcasting
Legacy API Modernization
- Transforming SOAP/XML to modern REST
- Replacing outdated interfaces with a strong focus on minimizing downtime
- Step-by-step migration paths with backward compatibility
- Data normalization & transformation pipelines
- Wrapping legacy services with modern API gateways
- Reducing technical debt while keeping continuity
Security & Access Control
- OAuth2, JWT, SSO, MFA
- Keycloak realm design + secure integration
- RBAC permissions and privilege separation
- API key & signature-based authentication
- HMAC, request signing, timestamp validation
- audit trails & activity logs designed in line with GDPR principles
Performance & Reliability
- Redis caching layers
- Architectures that support horizontal API scaling (clusters, auto-scaling)
- Stress tests, load tests, profiling
- Latency optimization and connection pooling
- Circuit breakers, retry strategies, fallbacks
- Prometheus + Grafana monitoring dashboards
When You Need API Development & Integrations
Choose this service when you want to:
Tools & Technologies
Protocols & API Layers
REST, GraphQL, SOAP, gRPC, WebSocket
Messaging & Streaming
Kafka, RabbitMQ, SSE
Security
OAuth2, JWT, Keycloak, CAS, SSO, MFA
Databases
PostgreSQL, ClickHouse, Redis, Oracle
Languages & Frameworks
Java 21, Spring Boot, Spring Cloud, Node.js (optional)
Monitoring
ELK Stack, Prometheus, Grafana
Infrastructure
Docker, Kubernetes, Nginx, API Gateways
Results we're
proud to show
FAQ
REST, GraphQL, SOAP wrappers, gRPC services, and event-driven messaging.
Yes — CRMs, ERPs, banking services, logistics, identity providers, marketplaces, etc.
Yes — we design and optimize distributed systems intended to support scalable, high-load environments.
Absolutely — including wrapping, gradual migration, and backwards compatibility.
Yes — OAuth2, JWT, SSO, Keycloak, MFA, RBAC.
API development and integrations for companies operating production systems. We support organizations with API development, system integrations, and API architecture based on the specific technical and regulatory context of each project. All services are delivered individually and depend on system requirements and constraints.
API performance, scalability, security, and availability depend on system architecture, infrastructure, usage patterns, and operational practices. No specific guarantees are provided.