Senior Machine Learning Engineer: ML Recall
Constructor5 months ago
Remote, EMEASenior
Base Salary
$80k - $120k/yr
Responsibilities
- Build and improve search retrieval systems using dense and sparse models and query understanding.
- Develop end-to-end visual and multimodal search solutions, including image search, shop-the-look, and visual recommendations.
- Own deep learning models as a platform for use by other teams.
- Experiment with new architectures and approaches across 40+ languages and 20+ domains.
- Design and run A/B tests on live traffic to measure model impact.
- Develop ground truth and measurement approaches for retrieval quality.
- Own models end to end from problem framing through rollout while balancing quality and latency.
Requirements
- 4+ years of experience shipping production machine learning systems.
- Experience with search, information retrieval, or recommendation systems.
- Hands-on experience training, fine-tuning, and evaluating transformer models.
- Strong Python and PyTorch skills.
- Fluency with Spark and Airflow.
- Experience owning a model end to end from problem framing to rollout.
- Experience designing and running A/B tests to validate model impact.
- Excellent English communication skills.
Benefits
- Fully remote work arrangement with the ability to choose where you live.
- Unlimited vacation time, with at least 3 weeks per year encouraged.
- Work-from-home stipend.
- Apple laptops provided for new employees.
- Annual training and development budget.
- Maternity and paternity leave for qualified employees.
- Regular team offsites.
- Stock options in addition to base salary.
Tech Stack
Categories
About Constructor
Constructor builds an AI-powered search and product discovery platform for ecommerce retailers, marketplaces, and distributors, delivered as enterprise SaaS. Its tools power on-site search, browse, recommendations, and shopping agents to optimize conversions and merchandising outcomes. Founded in 2019 by Eli Finkelshteyn and Dan McCormick, the San Francisco–based, privately held company counts brands such as Sephora, Under Armour, and Petco as customers and raised a Series B in 2024.