Senior Python Backend Engineer, Financial Systems

AI for MakersWe're Makers. In 2025, we set out to build something most teams only talk about. We embedded AI so deeply into our development workflows that we were over 10x more productive. Being on the bleeding edge isn't a strategy here. We hack on AI tools because we can't help it. It's how we're wired.

We don't talk about the future of engineering. We're living it. LogisticsThis is a fully remote based role, however candidates must be located in Argentina or Brazil . Note: this is a long-term Independent Contractor position. Please submit your resume in English .

Our tools & stack- Python, MySQL, AWS - Claude, Codex, Cursor, Copilot, LangChain, LangGraph, LangFuse, OpenRouter, FastMCP What you'll do - Push production AI agents into the platform’s most complex flows, and build the Python services and MCP servers that orchestrate them: tool layer, context handling, model routing through OpenRouter - Build the integration backbone the platform runs on: payments, identity, e-signature, real time data, at the latency live decisions demand - Build out the rules engines and configuration runtime that turn the platform into a product factory, with customers shipping entirely new products on top of us without us touching the code - Migrate whole companies onto the platform: importer pipelines, batch reconciliation services, zero data loss - Build and scale the multi-tenant batch systems that move real money every night: settlement runs, document pipelines, async workers, where every customer’s data has to stay correct under load - Design the public APIs the entire customer ecosystem runs on, with AI agents as first-class consumers and the contracts that let new endpoints ship at speed - Build the financial systems behind every dollar that moves through the platform: billing, payouts, commissions, refunds, every cycle What you'll bring- Bachelor’s Degree or higherin Computer Science or a related field - 5+ years of experience in Python web development, particularly with fi