SaaS Integration Services

Connect Stripe, Brevo, Twilio, and other SaaS tools to your applications. Production-ready integrations built for reliability and scale.

Seamless SaaS Integrations

I integrate the SaaS tools your startup needs to operate: payments, email, communications, and analytics. Production-grade implementations with proper error handling, webhook management, and security.

Common Integrations (not limited to these)

I can integrate with any third-party service that has an API or webhooks. Here are platforms I commonly work with.

💳 Payments

  • Stripe - Payment processing, subscriptions, billing portals, Connect for marketplaces
  • PayPal - Payment processing, PayPal Commerce Platform, invoicing
What I build: checkout flows, subscription management, webhook handlers, payment reconciliation, dispute handling

📧 Email & Marketing

  • Brevo (Sendinblue) - Transactional emails, marketing campaigns, contact management
  • Iterable - Cross-channel marketing automation, journey orchestration
  • MailChimp - Email marketing, audience management, campaign automation
What I build: template management, segmentation logic, event-triggered campaigns, deliverability monitoring, unsubscribe handling

💬 Communications

  • Twilio - SMS messaging, phone verification, programmable voice
  • Zoom - Meeting creation, recording management, webhook integrations
  • Slack - Notifications, bot commands, workflow automation
What I build: SMS campaigns, two-factor authentication, meeting schedulers, notification systems, interactive Slack bots

📊 Analytics & Advertising

  • Google Analytics - Event tracking, conversion monitoring, custom dimensions
  • Meta Ads - Campaign management, conversion tracking, audience sync
  • Google Ads - Campaign API integration, conversion tracking, automated bidding
What I build: server-side tracking, conversion API integration, audience syncing, attribution reporting, GDPR-compliant tracking

How I Build Integrations

Third-party APIs fail, rate limits hit, webhooks arrive out of order. I build integrations that handle the real world.

01

Reliable Webhook Handling

Webhooks arrive out of order, duplicate, or fail silently. I implement idempotency, signature verification, retry logic, and proper queuing.

Azure Service Bus, deduplication, event ordering
02

Error Recovery

APIs fail: rate limits, timeouts, service outages. Exponential backoff, circuit breakers, and graceful degradation so your users never see errors.

Polly retry policies, fallback strategies, health checks
03

Security Best Practices

API keys in Azure Key Vault, webhook signature verification, secure credential storage, and audit logging for compliance.

OAuth flows, Azure Key Vault, encryption at rest
04

Comprehensive Testing

Integration tests with real API sandbox environments, webhook replay scenarios, rate limit handling, and failure-mode testing.

Integration test suites, mock servers, chaos testing
05

Observable & Debuggable

When integrations break, you need to know why. Structured logging, distributed tracing, and monitoring dashboards for every API call.

Application Insights, Seq logging, custom metrics
06

Cost Optimisation

API calls cost money. Caching, batch processing, and smart retry strategies to minimise unnecessary API usage.

Redis caching, request batching, usage monitoring

My Integration Process

Fixed-price projects with clear deliverables. No hourly billing surprises.

01

Discovery & Scoping

I review your requirements, map the integration points, identify edge cases, and provide a fixed-price quote.

1-2 days · Written specification · Fixed quote
02

Implementation

Production-grade integration with comprehensive error handling, testing, and documentation. Regular progress updates.

2-4 weeks typical · Staged deployment · Code review
03

Testing & Launch

Sandbox testing, webhook validation, load testing, and production deployment with monitoring.

Integration tests · Monitoring setup · Handover docs

Transparent Pricing

Fixed-price projects with clear deliverables. No hourly billing surprises.

Simple Integration

£1,500 - £3,000

Single API integration with webhooks and basic error handling.

  • 1-2 API endpoints
  • Webhook signature verification
  • Basic retry logic
  • Testing and deployment
  • Documentation
Timeline: 1-2 weeks

Complex System

£5,000 - £20,000+

Multi-platform integration with custom business logic and data transformation.

  • Multiple service integrations
  • Data transformation pipelines
  • Custom reconciliation logic
  • Production-grade monitoring
  • Performance optimisation
Timeline: 2-6 weeks

All projects start with discovery: I review your requirements, map integration points, and provide a fixed quote within 1-2 days. No obligation.

Work With Any API

The platforms listed above are examples. If a service has an API, webhooks, or even CSV exports, I can integrate it. Regional payment processors, niche SaaS tools, legacy systems with APIs. Not sure if your integration is possible? Tell me what you need connected and I'll give you an honest feasibility assessment within 24 hours.

Let's Talk About Your Integration Needs

Tell me which platforms you need to integrate. I'll provide honest feasibility and cost estimates. No sales pitch, I respond within 24 hours.