# Senior Backend Integrator — APIs, Scraping, Payments & Logistics

## Responsibilities
* Architect and scale multi-source ingestion: build scrapers (Amazon, Walmart, Shein, Temu) + integrate with Shopify, WooCommerce, BigCommerce, Amazon SP-API, and direct merchant feeds.
* Build data normalization + deduplication pipelines into a unified product graph.
* Implement SkyPostal API integration (shipping labels, duties/taxes, customs manifests).
* Develop payments integration with Stripe, BAC, Tasa Cero, Credomatic; handle FX and settlements to USD for merchants.
* Build robust backend services (Node.js/TypeScript or Python) with job queues, retries, and error handling.
* Implement secure session & credential management for merchant accounts and automation flows.

## Requirements
* 6–8+ years backend engineering (Node.js/TypeScript + REST/GraphQL APIs).
* Strong experience with web scraping (Puppeteer/Playwright/Selenium), proxy rotation, anti-bot evasion.
* Familiarity with payment gateways and logistics APIs.
* Cloud-native architecture (AWS/GCP/Azure), Docker/Kubernetes, observability tools.
* Experience building high-volume e-commerce or logistics platforms a plus.

Wilson Bittencourt

Azure

Selenium

Web Scraping

Cloud

Payment gateway

Stripe

E-commerce

Docker

Google Cloud Platform

Kubernetes

Puppeteer

Playwright

Sr. Back-end Developer (Python/Node.js/TS/GraphQL) - FT Freelance - Americas/Europe 