Alexeich22
From: Spain
Location: Benidorm, ES
On Useme since 12 October 2026
About me
Senior Full-Stack & Automation Developer | AI Integrations Specialist
I specialize in custom web development, API integrations, and AI-driven business process automation. With extensive experience in high-performance architectures, I help businesses connect complex software systems, automate repetitive workflows, and build scalable web platforms.
Core Expertise: • Languages & Frameworks: Python (FastAPI, Django), PHP (Laravel), JavaScript / TypeScript (React, Next.js). • Integrations & Automations: RESTful & GraphQL APIs, Webhooks, n8n, Zapier, Custom Microservices. • Databases & Data: SQL, PostgreSQL, BigQuery, Data Processing & ETL pipelines. • E-Commerce & Marketplaces: Allegro, Amazon, Baselinker, Vending & Payment Gateway APIs.
Why work with me? Fast execution, clean and maintainable code, and deep architectural precision. Ready to deliver high-quality solutions for your urgent and complex technical needs.
Categories
CV / Résumé
Jan 2021 - Oct 2026
Senior Full-Stack & Automation Engineer
Freelance / Technical Consultant
Designed and implemented custom API integrations, AI automation workflows (n8n, Python), and backend systems for e-commerce and SaaS platforms. Optimized database queries and high-volume data handling with focus on speed and reliability.
Portfolio
E-Commerce & Vending Payment API Integration
Description: Developed custom backend middleware connecting a web storefront with payment gateway APIs and vending systems. Handled MD5 signature verification, webhooks, and automated order status callbacks. Tech: Python, FastAPI, REST API, Webhooks
Business Process Automation via n8n & Custom Webho
Built end-to-end automated workflows linking CRM systems, marketplace APIs (Baselinker/Allegro), and external data processing pipelines. Tech: n8n, Python, SQL, REST APIs.