REST · GraphQL · Webhooks

APIs That Wire Your Whole Stack

Disconnected tools are the tax every growing business pays. We design, build, and integrate REST and GraphQL APIs that connect your payment gateways, CRM, ERP, and legacy platforms into one secure, documented data flow — so your team stops exporting spreadsheets and starts working from live, trusted data.

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Secure by Design
Fully Documented
Zero Downtime
REST
GraphQL
Node.js
Stripe
Salesforce
OAuth 2.0
integration track record

Wired, Tested, Running in Production

Every connector we ship is measured the same way — does it authenticate, does it scale, and does anyone still trust the data a year later.

200+
Integrations shipped across fintech, retail, logistics, and SaaS stacks
99.99%
Uptime SLA target on every integration we take into production
<150ms
Typical p95 response time after caching and payload tuning
0
Confirmed data leaks across managed integration workloads to date
integration.service.ts
Developer writing API integration code on a laptop at a clean desk
contract-first
the integration layer

One Contract, Every System Aligned

Most integration failures are contract failures: mismatched field names, silent pagination limits, and undocumented error codes that only appear at 2am. We design the schema first, mock every endpoint, and agree naming, versioning, and failure behaviour before a single provider credential is touched.

  • Versioned, typed schemas with one agreed data model across every system
  • Mock servers and sandbox sandboxes so the build is never blocked on someone else
  • Explicit pagination, rate limits, and retry semantics in the contract itself
  • Structured error codes your team can act on, not generic 500s
  • Backfill and reconciliation jobs for the data that already exists
gateway.config.json
Source code displayed on a desktop monitor during API integration work
production-ready
operational by default

Built for Real Traffic, Not Demos

An integration that cannot be monitored is an outage waiting for a date. We ship the observability, isolation, and failure handling with the code, so a provider outage degrades gracefully instead of corrupting your records.

  • Retries, circuit breakers, and dead-letter queues on every external call
  • Structured logs and traces per request ID, per provider, per tenant
  • Alerting on error rate, latency, and webhook delivery failure
  • Credential rotation and environment promotion without downtime
  • Load-tested against realistic volumes before go-live
what we build

Six Ways We Connect Your Stack

Point-to-point connectors, public APIs, and event pipelines — built once, documented properly, and handed over in full.

01

REST API Development

Versioned, well-named REST endpoints with consistent envelopes, sane status codes, and OpenAPI specs generated from code.

02

GraphQL APIs

Typed schemas, resolvers, subscriptions, and query depth limits that let many frontends read one source of truth safely.

03

Payment Gateway Integration

Checkout, subscriptions, split payouts, refunds, and reconciliation across Stripe, Razorpay, PayPal, Square, and Adyen.

04

CRM & ERP Connectors

Bidirectional sync with Salesforce, HubSpot, Dynamics, Odoo, SAP, and NetSuite, including field mapping and conflict rules.

05

Webhooks & Event-Driven Flows

Signed inbound and outbound webhooks, queues, and consumers that move data the moment something changes — not at the next sync.

06

Legacy System Integration

Databases, mainframes, SOAP services, and file drops wrapped behind clean modern APIs without a risky rewrite.

how we deliver

From Broken Data Flow to Production API

API Audit

We map every system, credential, rate limit, and data gap you have today.

Contract Design

Schemas, versioning, auth, and error semantics agreed and written down.

Build & Mock

Endpoints built against mocks and sandboxes so nothing waits on a third party.

Security Review

Auth scopes, secrets handling, rate limits, and an OWASP-aligned review.

Deploy & Monitor

Staged rollout, live telemetry, alerting, docs, and full handover to your team.

questions

API Integration, Answered

REST exposes fixed endpoints, so each URL returns one defined shape — simple to cache, secure, and integrate with any client. GraphQL exposes a single endpoint over a typed schema, so clients request exactly the fields they need and over-fetching disappears. We choose per surface: REST for public, third-party, and webhook traffic, and GraphQL when several frontends need flexible aggregated reads over the same data.
Yes — that is most of what we do. We integrate Salesforce, HubSpot, Zoho, Dynamics, Odoo, SAP, NetSuite, Tally, and in-house systems through native APIs, bulk endpoints, or database and file connectors. We start with a read-only audit of your data model, map fields and business rules, then build a bidirectional connector with sync schedules, conflict handling, and a full audit trail so nothing is lost in transit.
We build payment flows for Stripe, Razorpay, PayPal, Square, and Adyen, including hosted checkout, saved cards, subscriptions, split payouts, refunds, chargebacks, and settlement reconciliation. Every call is idempotent, signed, and verified server-side, and card data stays with the gateway so it never touches your servers — keeping you inside PCI DSS scope without a full compliance team.
Security is designed in, not bolted on. We use OAuth 2.0 with scoped keys, role-based authorisation on every route, TLS end to end, strict input validation, rate limiting, replay protection, and secrets held in a managed vault instead of source code. Before launch we run dependency scanning, penetration testing, and an OWASP-aligned review, and we log every access so suspicious activity is visible instead of guessed at.
Yes, and you own the documentation. Every engagement ships with an OpenAPI 3.1 or GraphQL SDL specification, request and response examples per endpoint, error codes, authentication flows, and plain-English integration guides. If you prefer a live playground we generate one from the spec, so your developers, partners, and support team all build from one single source of truth.
A single clean API-to-API connection usually takes 2 to 4 weeks, including auth, sync logic, error handling, and testing. Multi-system projects that combine ERP, CRM, and data transformation run 6 to 10 weeks, and legacy or mainframe sources take longer because discovery is the hard part. The audit gives us a fixed scope and timeline, so you always know what is being built and by when.
Yes. We subscribe to provider webhooks and publish our own, with signature verification, idempotent processing, automatic retries with exponential backoff, and a dead-letter queue so one failing event never blocks the pipeline. We add polling fallbacks and full event logs, and we watch delivery rate and latency in production so updates land in seconds instead of at the next sync.
We do, and we do it without a rewrite. Databases, ERPs, mainframes, file drops, SOAP services, FTP schedules, and even undocumented internal systems can be wrapped behind a clean modern API, then migrated incrementally as confidence grows. We build an anti-corruption layer so the legacy core stays untouched and stable, which means modern endpoints without the risk or cost of replacing systems that already work.

Wire Your Entire Stack With Us

Tell us which systems need to talk to each other and we will map the endpoints, authentication, data model, effort, and timeline in a short, no-pressure call. No jargon, no obligation.

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