APIS AND INTEGRATIONS THAT DON'T LEAK GLUE

Quick Answer: NUUN Digital designs, builds, and operates APIs and integrations — REST, GraphQL, event-driven, and iPaaS. Clean contracts, versioning discipline, documentation developers respect, and monitoring that surfaces problems before customers do.

WHAT WE BUILD

Public APIs. REST and GraphQL with versioning, rate-limiting, and developer docs.
Internal APIs. Service-to-service contracts for platforms and microservices.
Event-driven architectures. Kafka, EventBridge, RabbitMQ, NATS.
iPaaS integrations. Workato, MuleSoft, Boomi, Zapier, Make — pick the right tool per job.
SaaS-to-SaaS integrations. Salesforce, HubSpot, Marketo, Shopify, Netsuite, Workday.
Legacy integrations. SOAP, EDI, flat-file, SFTP — wrapped in modern contracts.

HOW WE DO IT

Design the contract first. OpenAPI or GraphQL schema before code.
Build with observability. Structured logs, tracing, and metrics from day one.
Secure appropriately. OAuth, mTLS, API keys, rate-limiting, and WAF rules per risk.
Document for developers. Docs that work; examples that run.
Operate with SLOs. Latency, error rate, and availability targets explicit.

WHEN IT FITS

Platform strategy requiring API-first architecture.
Multi-system integration blocking marketing, sales, or service velocity.
Partner program needing developer-facing APIs.
Post-acquisition integration combining multiple tech stacks.

SELECTED WORK

Anonymized — fintech — Public API platform → [X] partners integrated; [Y]ms p95 latency. Read case →
Confidential retailer — OMS + WMS + PIM + storefront integration → [X] systems unified, [Y]% fewer sync errors. Read case →

SOURCES & FURTHER READING

Software & Product Development practice
Data architecture and modeling
ETL/ELT pipelines
OpenAPI Specification — https://www.openapis.org/
GraphQL — https://graphql.org/

Frequently asked.

REST or GraphQL?

REST for public APIs where caching, simplicity, and tooling win. GraphQL for internal APIs and frontends where query flexibility and schema evolution matter. Often both, at different layers.

iPaaS or custom code?

iPaaS for high-volume SaaS-to-SaaS with standard patterns. Custom code for complex transformations, high-performance requirements, or cost reasons at scale. Decision framework per integration.

How do you handle versioning?

URL versioning for REST (/v1, /v2) with sunset timelines and deprecation headers. GraphQL via schema evolution with deprecation tags. Breaking-change policy documented upfront.

What about API security?

OAuth 2.0 / OIDC baseline. mTLS for service-to-service. Rate-limiting, schema validation, and WAF rules per threat model. Penetration testing on public-facing APIs before GA.

Do you build developer portals?

Yes — API catalogue, authentication, key management, sandbox environments, and interactive docs. Stripe- and Twilio-level developer experience is the bar.