Andre V.

Senior Backend & Integrations Engineer | APIs, ERP, eCommerce, POS & Marketplaces Need to connect your ERP, eCommerce platform, POS, marketplace, or internal systems? I design and build backend systems and integrations that connect complex business platforms reliably, from architecture and data modeling to APIs, synchronization, automation, and production deployment. Over 15+ years in software engineering, I have worked extensively with startups and growing companies, often taking responsibility for the architecture and implementation of systems from the ground up. What I specialize in * Backend & system architecture * API integrations - REST, GraphQL, SOAP, webhooks, OAuth, API keys, gRPC * ERP, eCommerce, POS & marketplace integrations * Product, catalog, pricing & inventory synchronization * Order aggregation and multi-warehouse systems * Middleware and integration platforms * Shopify, Odoo and third-party platform integrations * AWS, Docker, CI/CD and cloud infrastructure * AI integrations, agents, MCP servers and function calling I have worked on systems connecting ERP, PIM, eCommerce, POS, marketplaces, delivery platforms and other business-critical services, including integrations involving large product catalogs, complex data mappings, inventory synchronization and high-volume order flows. A typical integration is not just about connecting two APIs. I focus on the difficult parts: data mapping, idempotency, retries, rate limits, error recovery, synchronization conflicts, observability and maintaining consistency across systems. Technology Backend: Node.js, Sails.js, Go, Python, PHP, C#/.NET Frontend: TypeScript, React, Angular, Astro Databases: PostgreSQL, MySQL, MongoDB, DynamoDB, SQLite, Supabase Cloud: AWS, Cloudflare, Docker, Kubernetes, DigitalOcean Platforms: Shopify, Odoo and multiple eCommerce, POS, ERP and marketplace platforms AI: OpenAI, Anthropic, MCP, function calling, AI agents and voice AI I can work as a Senior Backend Engineer, Technical Lead, Integration Architect or Fractional CTO, depending on the project. If you need someone who can understand the business problem, design the architecture and then actually build and operate the solution, feel free to get in touch.