Job Title: Backend + Machine Learning Engineer (Remote LATAM)

Job Type: Full-time

Location: Remote (Latin America)

Salary: Competitive salary in USD + Equity

Full Job Description

We are building the advertising infrastructure layer for the next generation of AI-native consumer products — powering interactive brand experiences embedded directly into conversational platforms, companion apps, and immersive digital experiences.

We are looking for a Backend + Machine Learning Engineer to design and scale the intelligence systems that power real-time ad delivery and personalization across millions of daily interactions.

This is a high-ownership engineering role for someone excited to work across backend systems, machine learning infrastructure, recommendation systems, and production serving in a fast-moving startup environment.

Responsibilities

• Design and deploy low-latency recommendation and ranking systems
• Build scalable ML training pipelines and feature stores
• Develop user behavior and contextual personalization models
• Design production-grade serving systems with sub-second latency
• Build scalable backend infrastructure for large-scale inference workloads
• Solve challenging machine learning problems including delayed rewards, cold-start prediction, and optimization at scale
• Collaborate closely with product and engineering leadership to define technical direction

Requirements

• 3+ years of software engineering experience
• Experience shipping at least one machine learning system to production
• Strong backend engineering fundamentals
• Experience with data pipelines and production infrastructure
• Experience building scalable distributed systems
• Strong Python programming skills
• Experience with PyTorch, TensorFlow, or similar ML frameworks
• Ability to work independently in fast-paced environments
• Strong written and verbal English communication skills

Nice to Have

• Experience with recommendation systems or ranking systems
• Experience with feature stores and real-time inference systems
• Experience processing large-scale event/data systems
• Familiarity with adtech, optimization systems, or personalization platforms
• Experience working at an early-stage startup



Benefits

• Competitive USD compensation
• Equity package
• Fully remote work across Latin America
• High ownership and autonomy
• Opportunity to work on cutting-edge AI infrastructure challenges
• Fast-moving and highly technical engineering environment