API & Integration Architecture · Uccle, Belgique

Unify fragmented systems with secure integration mesh

We construct secure GraphQL and RESTful integration gateways, asynchronous webhook relays, and fault-tolerant middleware architectures that keep enterprise platforms synchronized without brittle point-to-point glue.

< 80ms

P95 Gateway Latency

99.95%

Relay Uptime Target

OAuth2

JWT / mTLS Ready

EU

Data Residency

Integration Service Deck

Widescreen service modules

Modular gateway packages with fixed pricing, transparent turnaround, and direct checkout paths for teams that need production-grade integration work.

01 / GRAPHQL 3 weeks

GraphQL Federation Gateway

Compose multiple subgraphs into one production GraphQL supergraph with schema checks, persisted queries, and role-aware resolver routing.

  • ✓ Apollo / Hive schema registry
  • ✓ N+1 & batching guards
  • ✓ Persisted operation cache
Fixed Scope $2,400
02 / REST 2 weeks

RESTful Integration Bridge

Harden REST endpoints into a stable bridge: contract tests, idempotent writes, pagination guards, and typed clients for every downstream system.

  • ✓ OpenAPI 3.1 contracts
  • ✓ Idempotency keys
  • ✓ Generated TS / Python clients
Fixed Scope $1,800
03 / WEBHOOKS 10 days

Async Webhook Relay System

Durable webhook ingestion with signature verification, exponential retry queues, dead-letter capture, and replay tooling for failed deliveries.

  • ✓ HMAC signature validation
  • ✓ Outbox + retry backoff
  • ✓ Delivery audit trail
Fixed Scope $1,200
04 / MIDDLEWARE 3 weeks

Fault-Tolerant Middleware Layer

Circuit breakers, bulkheads, rate limiting, and fallback policies between services so a single failing dependency never cascades through your stack.

  • ✓ Resilience4j / Polly patterns
  • ✓ Adaptive rate limits
  • ✓ Chaos-failure runbooks
Fixed Scope $2,800
05 / AUTH 12 days

OAuth2 / JWT Auth Mesh

Centralized authorization mesh with token introspection, service-to-service mTLS, and policy enforcement points across every integration boundary.

  • ✓ OIDC + PKCE flows
  • ✓ JWT / opaque token mix
  • ✓ Policy-as-code (OPA)
Fixed Scope $1,650
06 / EVENTS 2 weeks

Event-Driven Message Bus

Publish-subscribe backbone with schema registry, consumer groups, and exactly-once delivery guarantees for cross-team event flows.

  • ✓ Kafka / RabbitMQ / SQS
  • ✓ Avro / JSON Schema registry
  • ✓ Consumer lag dashboards
Fixed Scope $2,200
07 / LEGACY 14 days

Legacy System Adapter Suite

Wrap SOAP, EDI, FTP, and mainframe interfaces behind modern adapters so legacy estates become first-class peers in your integration mesh.

  • ✓ SOAP / WSDL adapters
  • ✓ EDI X12 / EDIFACT maps
  • ✓ SFTP / AS2 bridges
Fixed Scope $1,950
08 / TELEMETRY 10 days

API Observability & Telemetry

Distributed tracing, structured logs, and SLI dashboards across every hop so integration incidents surface before partners notice.

  • ✓ OpenTelemetry pipelines
  • ✓ RED / USE dashboards
  • ✓ Alerting runbooks
Fixed Scope $1,400
09 / RETAINER Ongoing

Integration SLA Retainer

Continuous gateway maintenance, security patching, partner onboarding, and priority incident response with a named integration engineer.

  • ✓ 2-hour priority response
  • ✓ Monthly schema reviews
  • ✓ Partner onboarding queue
Monthly Retainer $750 / mo
Direct Dispatch

Ready to wire your platform mesh?

Open a project brief with our Uccle engineering desk, or move directly to secure checkout for a pre-scoped gateway module.