Yuriy S.

There's no such thing as impossible integration. I solve the API integration and payment automation projects other developers give up on, from legacy banking systems to blockchain and crypto payouts.

I bring 22+ years of 🌐 Web Development experience, including 18+ years with ⚙️ Custom PHP and 16+ years with 📝 WordPress and 🛠️ API Integration. I've built pipelines processing over 1,200,000 records at a time and connected systems ranging from 1974-era nacha banking files to modern stablecoin payout rails.

Based in Washington State, I work 30-45+ hours a week during American business hours and adapt fast to whatever a project requires.

====================================

⚙️ CUSTOM SCRIPTING & AUTOMATION

Cron-based processing, data pipelines, CSV/blockchain reconciliation tools, web scraping, IMAP email automation, analytics dashboards (Chart.js, DataTables), Cloudflare Workers, Twilio SMS / A2P 10DLC. If you do it by hand twice a week, I'll script it to run itself - exactly on your schedule.

====================================

🛠️ COMPLEX & CUSTOM API INTEGRATIONS

REST, SOAP, GraphQL, webhooks, JSON/XML, OAuth2, HMAC signatures, token refresh, rate limits, retries - the parts that break in production. From one-way pushes to full two-way synchronization, real-time or batch. Strong focus on authentication, error handling and personal data security. Pipelines processing 1,200,000+ records at a time with automatic updates down to the minute.

====================================

💳 PAYMENT SYSTEMS DEVELOPMENT

Payment gateways and checkout flows: Stripe, PayPal, Square, First Data / Fiserv, Plaid, Seamless Chex, high-risk merchant gateways, subscription billing, ACH / NACHA files, webhook and chargeback handling, WooCommerce / WHMCS / Shopify gateway plugins. Crypto payments: USDC / PYUSD / stablecoin payout systems, multi-chain (Ethereum, Polygon, BSC), Web3, Coinbase, NowPayments, Etherscan, Tatum, on-chain reconciliation.

====================================

Some API integrations I have experience with: Ahrefs API, Amazon API Gateway, Amazon AWS API, Amazon Lambda API, Amazon PA API, Amazon S3 API, Ankr API, Bank of America API, BigCommerce API, Brevo API, Bright Data API, ChatGPT API, Cloudflare API, Coinbase API, Detroit Trading API, Dukascopy API, Dynadot API, eBay Product API, Envato API, Ethereum API, Etherscan API, First Data API, Fiserv API, GoDaddy API, Google Places API, HubSpot API, Jobber API, Lead Prosper API, MaxMind API, Meta Marketing API, Modern Dropship API, NameSilo API, NowPayments API, OpenAI API, PayPal API, Plaid API, Polygon API, Polygon Scan API, Relograde API, RiskPay API, Round Sky API, Samsara API, Seamless Chex API, SendGrid API, Shopify API, Slack API, Square API, Stripe API, Supabase API, Tatum API, Thumbtack API, Trulia API, Twilio API, Web3 API, WhatsApp Cloud API, WooCommerce API, Zillow API, and more.