About the role

LOCATION: MEXICO CITY | NEW YORK CITY — IN OFFICE About the Company Nelo is a leading fintech in Mexico reimagining credit to expand consumer buying power. Founded in 2019 by former Uber international growth team leads Kyle Miller and Stephen Hebson, Nelo offers credit cards, BNPL loans, bill payments, and its own marketplace — all under one app — designed from first principles for a mobile-first, real-time payments world. With $100M in annual revenue, $1B in annualized GMV, and $140M+ raised in equity and debt, Nelo is one of the most capital-efficient consumer fintech companies in Latin America. The company is profitable — positive operating profit in both 2024 and 2025. It runs lean and technical: 60 employees, 8 engineers, with AI driving underwriting, collections, and operations. - HQ: Mexico City, Mexico; commercial and people operations in New York City - Founded: 2019 - Team size: 60 FTEs - Open roles: 10+ - Website: nelo.mx http://nelo.mx - Stage: Post-Series A; $100M credit facility (Victory Park Capital, 2022); profitable - Benefits: 401k, open PTO, medical, dental, vision, STD, LTD, fertility Company values: - Be your best selves: ambition, hard work, intellectual curiosity - Everyone is an owner: all employees receive equity including customer support; 10-year option expiration; equity refreshers - Customer first: product decisions grounded in customer benefit - Open and honest communication: quarterly financials and board presentations shared company-wide; low tolerance for bureaucracy or gossip - Move fast, learn fast: hundreds of experiments run monthly; rigorous experimentation culture ABOUT THE ROLE We are looking for a Senior Data Engineer to help design, build, and operate the core data platform that powers analytics, machine learning, and business decision-making at Nelo. This is a hands-on, high-impact role for an experienced engineer who enjoys working across the full data lifecycle, from ingestion and transformation to reliability, scalability, and ML enablement. You will partner closely with Analytics, Product, Engineering, Marketing, Risk, and Machine Learning teams to ensure our data infrastructure is robust, scalable, and easy to build on as Nelo continues to grow. WHAT YOU’LL DO - Own and evolve the data platform: Design, build, and maintain scalable, reliable data pipelines and datasets that power analytics, reporting, and machine learning use cases across the company. - Build and maintain ETL/ELT pipelines: Develop production-grade pipelines that ingest data from transactional systems, third-party providers, and event streams into our data warehouse and feature store. - Enable analytics and business teams: Partner with Data Analytics and stakeholders to ensure data is well-modeled, documented, and accessible for self-service analysis. - Support machine learning workflows: Build and maintain feature pipelines and feature stores that support model training, validation, and online/offline inference. - Ensure data quality and reliability: Implement data quality checks, monitoring, alerting, and SLAs to ensure trust in our data products. - Improve developer experience: Build tooling, abstractions, and CI/CD pipelines that make it easier and safer to develop, test, and deploy data pipelines. - Collaborate cross-functionally: Work closely with Software Engineers, ML Engineers, and Product Managers to align data models and pipelines with product and business needs. - Scale for growth: Continuously improve performance, cost efficiency, and scalability of our data infrastructure as data volume and use cases expand. ROLE REQUIREMENTS At least 5 years of experience in data engineering, software engineering, or backend engineering roles with significant ownership of production data systems. TECHNICAL SKILLS - Strong proficiency in Python for building data pipelines and infrastructure. - Advanced SQL skills and deep experience with data modeling fo