Reliable API Integrations
Without Chaos

We integrate CRM systems, payment gateways, analytics, advertising platforms and internal services — with proper architecture, logging, and resilience built in from day one.

What We Integrate

CRM & ERP Systems

Salesforce, HubSpot, Bitrix24, SAP — bidirectional sync with conflict resolution.

Payment Gateways

Stripe, PayPal, LiqPay, Fondy, WayForPay — with idempotency and full audit trail.

Analytics & Advertising

Google Analytics, Meta Ads, TikTok Ads, Mixpanel — event tracking and conversion pipelines.

Messaging & Notifications

SendGrid, Twilio, Telegram Bot API, Slack — reliable delivery with fallbacks.

Internal Microservices

REST and gRPC inter-service communication with proper contracts and versioning.

What's Always Included

Integration Architecture

Proper layering, abstraction over third-party clients, so switching providers doesn't break everything.

Retry & Idempotency

Exponential backoff, deduplication keys, dead-letter queues. No lost events, no double charges.

Structured Logging & Monitoring

Every request/response logged with correlation IDs. Alerting on error rate spikes.

API Documentation

OpenAPI/Swagger specs, runbooks, and handover documentation for your team.

Integration Layer Design

Clean separation between your core system and external dependencies.

🖥️Frontend
⚙️Backend API
🔌Integration Layer
🌐External API
🗄️Database
📋Logging
🔁Queue / Retry
⏱️Rate Limiter

API Integrations for Business — Reliable Architecture from Day One

An API integration connects your system with external services: CRM, payment gateways, delivery services, advertising platforms, messengers. A well-built integration runs silently for years. A poorly built one breaks at 3am and causes lost transactions.

Our integration experience includes: Bitrix24, Salesforce, HubSpot (CRM), LiqPay, Fondy, Monobank, PrivatBank, Stripe, PayPal (payments), Nova Poshta (delivery), Google Analytics, Meta Ads, TikTok Ads (analytics), Telegram Bot API, SendGrid, Twilio (notifications).

Every integration we build has three reliability guarantees: idempotency (a repeated request will not cause double-charging), retry mechanism with exponential backoff (a temporary third-party API failure will not cause data loss), structured logging (every request and response is stored for debugging and audit).

Cost depends on complexity: simple one-way integration — from $500 (1–2 weeks), bidirectional sync with queues — from $2,000 (3–4 weeks), multi-provider system with failover — from $4,000 (4–8 weeks). Free consultation and scoping included.

Integration Costs

Simple integration — from $500

One service, one-way sync. 1–2 weeks.

Complex bidirectional — from $2,000

Queues, retries, logging, idempotency. 3–6 weeks.

Multi-provider system — from $4,000

Failover, circuit breaker, full audit trail. 4–8 weeks.

Frequently Asked Questions

How much does an API integration cost?

A simple integration (one service, one-way sync) starts at $500. A complex bidirectional integration with queues and retries from $2,000. A multi-provider system with failover from $4,000.

Can you integrate with our CRM or ERP system?

Yes. We have experience integrating Salesforce, HubSpot, Bitrix24, SAP, and payment systems including Stripe, PayPal, LiqPay, Fondy and WayForPay.

What is idempotency and why does it matter for payments?

An idempotent request produces the same result even if executed twice. This prevents double-charging when a payment request is retried. We build all payment integrations with idempotency by default.

How long does integration development take?

A simple integration takes 1–2 weeks. A complex one with full testing takes 3–6 weeks. Depends on the quality of the third-party API documentation and the number of edge cases.

What happens if the third-party API goes down?

We build integrations with resilience mechanisms: exponential backoff for retries, dead-letter queues for failed events, circuit breakers to isolate failures, and alerts when error rates spike.

Related Services

Need a reliable integration?

Tell us about your systems and what you're trying to connect. We'll design the right approach.

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