Senior Machine Learning Engineer

Senior Machine Learning Engineer (Pricing or Computer Vision) 100% Remote, Fluent English (required)

Brazil-based | PJ Contract | Long-term

We are looking for a Senior Machine Learning Engineer to join our team on a long-term, fully remote PJ contract . This is a global environment with international stakeholders, and fluency in English is mandatory , as all communication and interviews are conducted in English.

This role is open to Brazil-based professionals with strong experience in Pricing/Optimization or Computer Vision , who are passionate about building and deploying production-grade ML systems that drive real business impact.

What you’ll do

• Lead the development and deployment of Machine Learning solutions to solve complex business problems
• Own key components of ML systems, influencing technical direction and architectural decisions
• Develop clean, efficient, and scalable production-grade code
• Analyze large-scale datasets to generate actionable insights
• Apply state-of-the-art ML methodologies to build robust and scalable models
• Collaborate closely with Product, Engineering, and other stakeholders
• Mentor junior team members and help grow domain expertise within the team
• Contribute to the company’s technical leadership through research, publications, or patents

Minimum Requirements

• 5+ years of industry experience in applied Machine Learning
• Master’s Degree or PhD in Computer Science, Machine Learning, or a related field
• 3+ years of experience building, deploying, and maintaining ML/DL models in production at scale
• Strong understanding of ML best practices (feature engineering, A/B testing, experiment design, training & serving pipelines)
• Hands-on experience with ML algorithms and techniques (gradient boosting, deep neural networks, optimization, regularization)
• Experience in at least one of the following domains:
• Pricing / price estimation, personalization, recommender systems, computer vision, fraud detection & authentication, or marketing
• Strong Python skills and experience with scientific and ML libraries (NumPy, Pandas, Scikit-learn, TensorFlow, Keras, PyTorch)
• Solid data engineering experience with large-scale datasets
• Experience with Big Data tools such as Spark, Kafka, Apache Beam
• Experience with cloud platforms (AWS, GCP, or Azure )
• Proficiency in Python and SQL

Preferred Qualifications

• PhD in CS, ML, AI, or related field
• Experience applying ML to real-world business problems, preferably in retail or e-commerce
• Familiarity with MLOps tools and pipelines
• Strong sense of ownership, impact-driven mindset, and passion for high-quality ML solutions

Why join us

• 100% remote work (Brazil-based)
• Long-term PJ contract
• Flexible working hours aligned with Brazil time
• Opportunity to work on impactful ML systems in a global environment
• Strong technical ownership and growth opportunities