API Integration & Third-Party Services
API integration and third-party services: payment gateways, CRM, ERP, shipping, email services, SMS, authentication providers, external APIs, webhooks, synchronization, scheduled jobs, retry mechanisms and failure handling.
Your app needs to talk to the services your business already runs on
Typical situations I help with:
- payments, CRM or ERP live outside your app and data doesn't stay in sync;
- integrations were built quickly and break whenever a third party changes something;
- webhooks arrive but nothing reliable happens when they do;
- scheduled jobs silently fail and nobody notices until it's too late;
- there's no retry mechanism, so a temporary outage becomes lost data;
- failure handling is ad-hoc, with no logging, alerting or recovery path;
- different integrations follow different patterns, making them hard to maintain;
- shipping, email, SMS or auth providers are wired up differently each time;
- external APIs change and your app breaks in production;
- there's no clear picture of what's synced and what isn't.
If any of this sounds familiar, you don't need to rebuild your application. You need a developer who can connect it reliably to the services your business already uses — with proper webhooks, scheduled jobs, retries, failure handling and monitoring — so integrations stop being a source of incidents.
What I can do for your project
Connect your application with the services your business already uses
I build and fix integrations between your application and the external services it depends on — from payment gateways and CRMs to email, SMS, shipping and authentication providers. I make sure data stays in sync, webhooks are handled reliably, scheduled jobs run when they should and failures are logged, retried and recoverable instead of silent.
Work typically covers:
- Payment gateways — Stripe, PayPal and others: one-time payments, subscriptions, refunds, webhooks;
- CRM — HubSpot, Salesforce and similar: contacts, deals, activity sync;
- ERP — inventory, orders, invoicing and master data synchronization;
- Shipping — carriers, labels, tracking and delivery status updates;
- Email services — transactional email, templates, delivery events;
- SMS — verification, notifications and delivery reporting;
- Authentication providers — OAuth, SSO and social login;
- External APIs — consuming third-party APIs reliably and handling their quirks;
- Webhooks — receiving, verifying, processing and idempotent handling;
- Synchronization — keeping data consistent across systems, both directions where needed;
- Scheduled jobs — recurring syncs, reports and cleanup tasks that actually run;
- Retry mechanisms — exponential backoff, dead-letter queues and safe replays;
- Failure handling — logging, alerting, recovery and clear operational visibility.
The goal isn't just "it works once". It's integrations that keep working when traffic grows, when a provider has an outage and when something inevitably changes on their side.
Why me
I have 4+ years of commercial experience with Laravel, Symfony and Vue.js, and I work as a Georgian IE on a remote B2B basis — clear contracts, invoices and communication. I focus on business results, not just code, and keep the process transparent with clear estimates and predictable delivery.
Integrations are where most production incidents come from — and that's exactly where I'm most useful. I build them with retries, idempotency, monitoring and failure handling from the start, so they don't become a source of silent bugs. I work on a small number of projects at a time, so you get direct communication, fast feedback and a developer who treats integrations as long-term infrastructure.
- Full-stack experience: Laravel / Symfony / Vue.js
- 4+ years of commercial development
- Georgian IE — easy B2B cooperation
- Remote workflow with clear communication
- Integrations built with retries, idempotency and monitoring
- Transparent estimates and predictable delivery
- Payment gateways
- CRM
- ERP
- Shipping
- Email services
- SMS
- Authentication providers
- External APIs
- Webhooks
- Synchronization
- Scheduled jobs
- Retry mechanisms
- Failure handling
From first call to delivery.
Discuss requirements
Clarify services, data flows and constraints.
Design the integration
Contracts, sync strategy, retries and failure paths.
Propose approach and estimate
Plan, priorities and timeline.
Implement
APIs, webhooks, scheduled jobs and synchronization.
Test edge cases
Timeouts, outages, duplicates and partial failures.
Monitor and support
Logging, alerting, replays and ongoing improvements.
Frequently asked questions
01 Which services do you integrate with?
Payment gateways (Stripe, PayPal and others), CRM (HubSpot, Salesforce), ERP systems, shipping carriers, email and SMS providers, authentication providers and any external REST API.
02 How do you handle webhook reliability?
I verify signatures, process webhooks idempotently and route failures into retries or a dead-letter queue, so missed or duplicated deliveries don\'t corrupt your data.
03 What happens when a third-party service has an outage?
Integrations are built with exponential backoff, retry queues and clear logging, so temporary outages don\'t become permanent data loss.
04 Can you fix existing integrations that keep breaking?
Yes. I regularly review and stabilize existing integrations — adding retries, idempotency, monitoring and failure handling where they\'re missing.
05 What is your cooperation model?
Remote B2B via Georgian IE. Hourly, fixed project or monthly retainer — depending on the scope.
Need to integrate your app with external services?
Tell me what you're connecting and I'll help you identify the next step.