Machine Learning Engineer

Position: Machine Learning - Risk Intelligence - Fintech
Location: Worldwide
Schedule: Remote
Type: Full-Time
ArrowFin Global builds real time risk intelligence for the futures trading industry, systems that detect when a trader is heading toward a blowup before it happens. This is applied ML: deep reasoning about trading data and behavior matters more here than novel model architecture.
You'll own the ML and modeling work behind our behavioral scoring and trader profiling systems, reporting to our Technical Program Lead and Principal Data Engineer, who owns the overall risk intelligence platform.
What you'll do
🔹 Design and build behavioral models using real trading data spanning hundreds of millions of fills
🔹 Design labeling strategies and build high quality labeled datasets with clear, reproducible methodology
🔹 Define rigorous evaluation frameworks and guard against leakage, sampling bias, and overfitting
🔹 Take models from research notebooks into production Python services, typed contracts, tests, fixtures
🔹 Validate models under noisy, live trading conditions and ensure production matches research results
🔹 Present your work regularly to both technical and non-technical stakeholders, including executives
What you bring (required)
✅ 4+ years building and shipping ML/data products in industry, not academia only, with strong production Python
✅ Comfortable working independently from ambiguous problem statements, a question and a database, not a spec
✅ Strong SQL and experience with large, messy real world datasets, PostgreSQL/Timescale a plus
✅ Able to explain models in plain English to non-ML audiences; interviews include presenting a past project
✅ Effective with AI coding tools; you must be able to explain every line you ship
✅ Conversational English and comfort engaging directly with stakeholders and executives
✅ Minimum 4 hours of overlap with US Central time working hours
Nice to have
➕ Trading or futures domain knowledge, genuine curiosity about markets counts
➕ LLM/RAG experience
Contract type: Remote, long term contract
To apply: Apply on LinkedIn with a short summary of your production ML experience and why you're interested in this role
Why Join ArrowFin Colombia?
Massive Impact: You are building a platform that manages millions in transactional volume across three distinct products, not just maintaining a single pipeline of data.
Real Breadth: We are building high-performance, highly-available applications and direct exchange connectivity that are consumed by 10s of thousands of customers. This is your opportunity to get into the massive fintech and capital markets space. We use data to provide support and optimize the traders' experience on our platforms.
Code-Forward Leadership: Influence architecture and standards while continuing to ship code.
True Stability: You are a core employee, not an outsourced contractor. We are building our own products for the long term.
Premium Benefits: Enjoy private insurance, education reimbursement, a supportive local culture, and a stable career path designed for multi-year growth.
Compensation: Competitive compensation based on experience level.

Work arrangement
Yes