Senior Python Backend Engineer, Financial Systems, Santa Fe Capital

AI for Makers
We're Makers.
In ****, 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.
Logistics
This is a fully remote based role; however candidates must be located in Argentina or Brazil.
Note: this is a long-term Independent Contractor position.
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 higher in Computer Science or a related field
5+ years of experience in Python web development, particularly with financial systems or modules
3+ years with SQL databases (e.g., MySQL, PostgreSQL)
3+ years of SaaS product development, including cloud based solutions
3+ years of hands‐on experience with Django or another Python framework
2+ years of proven experience building and consuming APIs for financial transactions
Daily, deliberate use of agentic AI coding tools such as: Claude, Cursor, Codex
Proven ability to direct AI agents on multi file, long horizon tasks
Advanced mathematical skills in financial modelling, algorithms, and data processing
Hands on experience with frontend frameworks like Vue.js or React
Professional experience working with Docker for containerization and AWS
Excellent verbal and written communication skills
Bonus points
2+ years of experience working at a scaling startup
Experience with spec driven development: using AI to generate tests, scaffolding or architecture from requirements
Hands on experience building production AI agents or multi‐step LLM pipelines using LangChain, LangGraph, or equivalent orchestration frameworks
Proven use of Agent Teams in Claude Code, multi agent orchestration via Codex, or similar parallel agentic workflows
Experience working in the fintech or financial services vertical
Life at BriteCore
We take pride in our dynamic, diverse team, unified by shared values of community, integrity, grit and impact.
We love what we do and the people we do it with, which is why we welcome every individual, provide them with equal opportunity irrespective of their race, color, national origin, religion, age, gender identity, sexual orientation, veteran, disability or any other legally protected rights that one has.
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