Software Engineer, Machine Learning

Job summary

Responsibilities

As a Machine Learning Engineer on the Marketplace team, you will build the models and decision systems that power Mercor's hiring engine. This includes search and ranking, candidate-job matching, marketplace recommendations, personalization, and allocation decisions across a rapidly growing talent…

• Ranking and matching systems that determine which candidates and opportunities are surfaced
• Models for recommendation, personalization, and marketplace optimization
• Retrieval, scoring, and decision pipelines operating at global scale
• Feedback loops that learn from downstream hiring outcomes, not just top-of-funnel engagement
• Real-time and batch inference systems embedded in product-critical workflows

What they're looking for

• Strong track record of shipping ML systems into production
• Experience with ranking, recommendation, search, matching, or marketplace problems
• Good judgment on model design, objective functions, evaluation, and tradeoffs
• Comfort working across the full applied ML stack: data, features, training, inference, and iteration
• Strong engineering fundamentals and a bias toward simple, robust systems

Tech stack

• Python
• Go
• RAG
• Kafka
• PostgreSQL
• Elasticsearch
• Kubernetes
• Terraform