Quantitative Developer - Python/Django (LATAM)

Quantitative Developer — Job Description Role Definition Reports To: Financial Engineering Manager Seniority: Senior Location: Open to candidates in LatAm, working EST hours Owns scoring integrity end to end — implementation, validation harness, and production debugging — work currently handled ad hoc by the Principal Engineer. What You'll Do Build and maintain the production Python that computes PRISM and related risk scores — turning methodology into code that runs correctly and at scale Build and maintain the reference-set harness that validates every model or classification change in CI Diagnose scoring failures in production — distinguish code, data, and methodology issues — and fix the underlying class of bug, not just the instance Rule on straightforward classification questions; escalate genuinely hard calls (structured products, buffered ETFs, private assets) Estimate blast radius and maintain a tested rollback for every model or classification change before it ships Keep the scoring path performant as portfolio and security volume grows Skills & Requirements Technical Production Python you've shipped and maintained — not a prototype or notebook Django — models, migrations, tests, CI, code review, to the same standard as any other engineering seat SQL and data work at scale — pandas, numpy, portfolio-sized datasets Testing & validation engineering — reference-set/golden-data harnesses wired into CI, not just unit tests Large-scale systems, data pipelines, or automated systems (trading systems, scrapers, data adapters) Domain US market structure and asset classification — equities, fixed income, funds, ETFs, annuities, structured products, cash equivalents, private assets Risk modeling and scoring fundamentals — volatility, correlation, concentration, tail measures Hands-on options, structured products, or derivatives experience is a plus Tax-aware analytics (after-tax return, cost basis, loss harvesting) is a plus — this would be built here, not maintained Important Notes Not a fit for someone whose experience is primarily research-grade quantitative code, notebooks, or prototypes — we need production software taken from development through deployment and maintenance Looking for consistent employment history — 18+ month tenures in previous roles, demonstrating stability and long-term ownership Work at the intersection of software engineering, quantitative finance, and fintech Long-term opportunity to contribute to production systems used in real financial workflows First 90 Days Weeks 1–2 — take one live PRISM defect end to end and establish whether the cause is code, data or methodology Weeks 3–6 — build the reference-set harness and wire it into CI as non-blocking Weeks 7–12 — make it a required check, and take scoring incidents off the Principal Engineer Interview Process Async Loom Screen — first-round async screen. Screening Interview — short live call: basic fit, motivation, communication, and logistics. Who Interview — chronological career walkthrough: for each role, what you were hired to do, what you're proudest of, the low points, who you worked with and what they'd say, and why you left. Focused / Technical Interview — deep-dive on the competencies for this seat, built around two role-specific exercises. Reference Interviews — calls with former managers and colleagues to verify track record, technical ability, and working style. Originally posted on Himalayas