Senior Machine Learning Engineer
Collectors Universe, Inc.2 months ago
Remote, United StatesSenior
Responsibilities
- Design, build, and deploy end-to-end machine learning systems for AI/ML product initiatives.
- Own projects from problem framing through implementation, evaluation, launch, and post-launch monitoring.
- Develop production-grade computer vision, multimodal, and agentic pipeline solutions that produce reliable structured outputs.
- Build and improve data pipelines, model evaluation frameworks, and feedback loops for accurate and maintainable training and inference systems.
- Define data requirements, labeling standards, success metrics, and rollout plans with annotation, operations, product, and domain teams.
- Translate experimental findings into recommendations that balance model quality, latency, cost, and operational complexity.
- Contribute production code, documentation, technical designs, design reviews, and code reviews.
Requirements
- 5+ years of experience in machine learning, applied AI, or a closely related software engineering field.
- Hands-on experience building and shipping production machine learning systems, including data preparation, training, evaluation, deployment, and monitoring.
- Proficiency in Python and common ML tooling, with solid software engineering fundamentals including testing, modular design, observability, and version control.
- Experience in one or more of computer vision, multimodal modeling, information extraction, search/retrieval, or LLM-based systems.
- Ability to define statistically sound evaluation methodologies and make data-driven model-readiness decisions.
- Strong system-design judgment focused on scalable, maintainable, and practical solutions.
- Clear written and verbal communication skills for technical and non-technical stakeholders.
- Ability to work independently, navigate ambiguity, and drive projects to completion.
- Preferred: experience with image-heavy or quality-sensitive domains, agentic systems, tool-using LLMs, verification loops, cloud ML infrastructure, experiment tracking, production inference, or human-in-the-loop operations.
- Interest in collectibles, trading cards, marketplaces, or trust-and-safety problems is preferred.
Benefits
- The company has offices across the United States and internationally; remote-role candidates may be asked to participate in an on-site final interview.
- Video interviews require cameras to be on, with some interview steps potentially conducted by phone.
- Collectors provides accommodation support for candidates with disabilities or special needs.
- Collectors uses e-Verify to validate legal ability to work in the United States.
Tech Stack
Categories
About Collectors Universe, Inc.
Collectors Universe (Collectors) provides authentication, grading, vaulting, and marketplace services for collectibles such as trading cards, coins, video games, tickets, autographs, comics, and memorabilia. Founded in 1986 and headquartered in Santa Ana, California, the privately held company operates PSA and PCGS, plus PSA Vault and the Card Ladder analytics platform, and integrates with marketplaces like eBay. It earns fees for grading, storage, consignment, and data services, and has certified millions of items.