360D Soul Limited
360D Soul Logo

API Development & IntegrationEngineered for High Concurrency & Low Latency

We architect, develop, and integrate resilient RESTful, GraphQL, and event-driven APIs with bank-grade security, 99.99% uptime, and sub-50ms latency.

360DSouldesignsandengineersmission-criticalAPIarchitectures,microservicesbridges,andreal-timeeventpipelinesthatpowerhigh-concurrencyenterpriseecosystemswithsub-millisecondprecision,robustfaulttolerance,andunyieldingzero-trustsecurity.

0M+

Monthly API Transactions Processed

<0ms

Average Global Endpoint Latency

0.00%

Enterprise Production Uptime SLA

0

Proven API Engineering Stages

API Scope & Engineering

What Our API Development Service Includes

Complete architectural engineering from schema design, gateway proxies, and zero-trust authentication to high-concurrency event streams and microservices bridges.

GET/api/v2/orders200 OK
POST/api/v2/payments201 Created
Architecture

RESTful API Engineering

Enterprise REST APIs built to strict OpenAPI 3.1 specifications with semantic versioning, deterministic error structures, and idempotent operations.

GQL
U
P
O
Modern Graph

GraphQL & Federation

Eliminate over-fetching and under-fetching with typed GraphQL schemas, Apollo Federation subgraphs, and unified enterprise data graphs.

MSG
EVT
Streaming

Event-Driven & Message Queues

Asynchronous message streaming with Apache Kafka, RabbitMQ, and BullMQ for decoupled microservices, background jobs, and instant webhooks.

ERP
SYNC
SaaS
Connectivity

Third-Party Integrations & Bridges

Seamless bidirectional integration bridges connecting payment processors, ERPs, CRMs, logistics, and legacy database systems.

API GATEWAY
AuthRate LimitProxy
Traffic Control

API Gateway & Rate Limiting

Centralized traffic orchestration, Kong / AWS API Gateway proxies, token bucket rate limiting, and global edge routing for extreme scale.

OAuth2
Security

Zero-Trust Security & Auth

Bank-grade authentication frameworks featuring OAuth 2.1, OIDC, JWT key rotation, mTLS, and defense against OWASP API Top 10 vulnerabilities.

Redis In-Memory
Edge Cache CDN
SQL Read Replica
Performance

High-Speed Caching & Queues

Sub-millisecond data delivery using distributed Redis clusters, multi-tier cache invalidation, and read-replica query acceleration.

swagger.json
$ curl -X GET /v1/api
HTTP/2 200 OK (14ms)
Developer UX

Developer Portals & Interactive Docs

Empower internal and third-party developers with interactive Swagger UI, Postman workspaces, automated SDK generation, and mock sandboxes.

Our 8-Step API (Engineering Lifecycle)

From contract-first schema modeling and zero-trust authentication to K6 stress testing and zero-downtime deployment.

PHASE 01

Discovery & Architecture Blueprint

Analyze business requirements, data models, throughput projections, and select optimal communication protocols (REST, GraphQL, gRPC).

Data entity modelingProtocol selection
→
PHASE 02

Contract-First Schema Design

Define unambiguous OpenAPI 3.1 specs or GraphQL schemas with strict validation, request/response models, and mock endpoints before writing code.

OpenAPI 3.1 definitionsMock server generation
→
PHASE 03

Security & Zero-Trust Architecture

Engineer the authentication layer with OAuth 2.1, granular RBAC/ABAC permissions, token encryption, and automated rate-limiting policies.

OAuth 2.1 / OIDCmTLS microservice auth
→
PHASE 04

Core Service & Logic Implementation

Develop resilient, clean microservices with optimized database queries, connection pooling, idempotency keys, and decoupled controllers.

High-throughput codeConnection pooling
→
PHASE 05

Gateway, Caching & Message Queues

Integrate Redis clustering, asynchronous Kafka / RabbitMQ workers, dead letter queues, and API Gateway traffic routing.

Redis cache layersMessage queue topologies
→
PHASE 06

K6 Load Testing & Security Audits

Simulate extreme traffic spikes with K6 and Locust, conduct OWASP API Top 10 penetration tests, and optimize P99 latency bottlenecks.

K6 stress testingP99 latency profiling
→
PHASE 07

Containerization & Edge Deployment

Package services in Docker containers, configure Kubernetes/Serverless edge deployments, and execute zero-downtime canary rollouts.

Docker & Helm chartsCanary deployment
→
PHASE 08

Telemetry, Observability & 24/7 SLA

Configure Prometheus, Grafana dashboards, OpenTelemetry distributed tracing, automated incident alerting, and continuous optimization.

OpenTelemetry tracesPrometheus & Grafana
→

Engineered for Extreme Speed & Reliability

We build high-concurrency API architectures on battle-tested frameworks, typed contracts, sub-millisecond memory stores, and distributed edge networks.

Node.js
Node.jsHigh-Throughput Runtime
Express.js
Express.jsREST API Framework
Python
PythonMicroservices & AI
Django
DjangoEnterprise REST Framework
TypeScript
TypeScriptStrict Type Safety
PostgreSQL
PostgreSQLTransactional Relational Store
MongoDB
MongoDBDistributed Document Store
Spring Boot
Spring BootEnterprise Java Services
Next.js 15
Next.js 15Server Action & Route Handlers
GitHub Actions
GitHub ActionsCI/CD & Automated Linting
Node.js
Node.jsHigh-Throughput Runtime
Express.js
Express.jsREST API Framework
Python
PythonMicroservices & AI
Django
DjangoEnterprise REST Framework
TypeScript
TypeScriptStrict Type Safety
PostgreSQL
PostgreSQLTransactional Relational Store
MongoDB
MongoDBDistributed Document Store
Spring Boot
Spring BootEnterprise Java Services
Next.js 15
Next.js 15Server Action & Route Handlers
GitHub Actions
GitHub ActionsCI/CD & Automated Linting
Laravel
LaravelModular REST APIs
Java
JavaBank-Grade Microservices
MySQL
MySQLHigh-Read SQL Cluster
Firebase
FirebaseRealtime WebSocket Sync
Oracle
OracleEnterprise Core Integration
Vercel Edge
Vercel EdgeGlobal Edge Gateway Proxies
SSL & mTLS
SSL & mTLSMutual TLS Cryptography
PHP
PHPHigh-Speed Microservices
C++
C++Ultra-Low Latency Sockets
CodeIgniter
CodeIgniterLightweight REST Service
Laravel
LaravelModular REST APIs
Java
JavaBank-Grade Microservices
MySQL
MySQLHigh-Read SQL Cluster
Firebase
FirebaseRealtime WebSocket Sync
Oracle
OracleEnterprise Core Integration
Vercel Edge
Vercel EdgeGlobal Edge Gateway Proxies
SSL & mTLS
SSL & mTLSMutual TLS Cryptography
PHP
PHPHigh-Speed Microservices
C++
C++Ultra-Low Latency Sockets
CodeIgniter
CodeIgniterLightweight REST Service
Sub-20ms P99 Latency
OWASP Top 10 Hardened
Auto-Scaling Mesh
99.99% Enterprise SLA
Frequently Asked Questions

Got Questions About Our API Engineering?

Here are answers to common questions about protocols, data security, high-concurrency architecture, and integration timelines.

Still Have Technical Questions?

Have unique legacy integrations, high-volume queue requirements, or custom schema constraints? Our engineering leads are ready to review your specs.

We design and implement RESTful APIs (OpenAPI 3.1), GraphQL (including Apollo Federation), gRPC for ultra-low latency microservices communication, WebSockets for bi-directional real-time data feeds, and asynchronous event streams using Apache Kafka or RabbitMQ.

We build with a Zero-Trust architecture. This includes OAuth 2.1, OpenID Connect, cryptographic JWT verification, mutual TLS (mTLS) between microservices, token bucket rate limiting, granular RBAC/ABAC authorization, and automated shielding against the OWASP API Top 10 vulnerabilities.

We engineer for massive scale by decoupling synchronous requests from background workloads through message queues (Kafka, RabbitMQ, BullMQ), distributed Redis caching clusters, read-replica database pools, and auto-scaling containerized gateways (Kong, AWS API Gateway) operating behind global edge CDNs.

Yes. A significant portion of our work involves building robust integration bridges. We wrap legacy systems (such as older SQL databases, SAP, AS400, or proprietary on-premise software) in clean, modern, secure REST or GraphQL interfaces with bi-directional synchronization and automated data transformation.

Yes. Every API we build comes with interactive developer documentation (Swagger UI, Redoc) and ready-to-import Postman workspace collections. If requested, we also generate typed client SDKs for TypeScript/JavaScript, Python, Go, and PHP to accelerate integration for your frontend or partner engineering teams.

We enforce contract-first schema design. We utilize URL path or header-based semantic versioning (e.g., `/v1/`, `/v2/`), deprecation headers, and automated schema regression checks in CI/CD pipelines to ensure existing client applications never experience breaking changes.

Before going to production, we conduct rigorous automated testing including unit and integration tests, contract tests with Pact, and distributed load stress testing using K6 and Locust to verify throughput and guarantee P99 latencies stay within strict SLA limits under simulated peak loads.

Yes. We specialize in zero-downtime monolithic decompositions using the Strangler Fig pattern. We establish an API gateway proxy, incrementally reroute functional domains to modular microservices, and ensure data consistency throughout the migration with zero service disruption.

We implement full-stack observability with OpenTelemetry distributed tracing, Prometheus metrics collection, Grafana real-time operational dashboards, and centralized logging via Elasticsearch or Datadog. You receive instant alerts via Slack or PagerDuty for any latency anomaly or error spike.

Timelines vary depending on complexity: a focused third-party integration bridge or REST API typically takes 2 to 4 weeks, while an enterprise multi-tier microservices platform takes 6 to 12 weeks. We start with a technical discovery call to review your data schemas, architecture requirements, and timeline expectations.