ROLE OVERVIEW Grailed is looking for a Staff Machine Learning Engineer to help us build the models and systems that connect buyers to the inventory they're looking for — and surface things they didn't know they wanted. Our data sits at the center of a complex peer-to-peer marketplace, and the ML layer is what turns a decade of behavioral signals into better search, smarter recommendations, and a marketplace that gets sharper over time. This is a hands-on technical role for an engineer who takes end-to-end ownership seriously — from architecture through production operation — and who is energized by working on a small, focused team where the infrastructure is still being built and the decisions made now have lasting consequences.

The strongest candidates will bring production instincts alongside technical depth: the kind of engineer who isn't done when the model trains, and who treats monitoring, retraining, and reliability as part of the job, not a follow-on task.

What You'Ll Do

Own the full lifecycle of predictive models in production — architecture, training pipelines, inference infrastructure, deployment, and ongoing model health Build and operate the systems that route model outputs into live product surfaces: search ranking, recommendations, feed ordering, and related user-facing experiences Establish and maintain model monitoring, alerting, drift detection, and retraining cadences — the feedback loops that keep deployed models accurate over time Partner closely with Data Science, Data Engineering, Product Management, and backend engineering to move work from validated approach to production system Own the decision-making process on whether to leverage ML infrastructure expertise from our parent company, GOAT Group, and when to advocate for building in-house solutions.

Requirements

7+ years of engineering experience, with substantial depth in production machine learning systems. Demonstrated end-to-end ownership: training pipelines through deployed inference, not just modeling. Advanced knowledge of ML, AI and statistical models, as well their application in e-commerce settings.

Strong proficiency in Python; SQL; DBT; airflow or similar. Solid software engineering fundamentals. Experience with ranking, retrieval, or recommendation systems.

Demonstrated expertise with ML lifecycle tooling — experiment tracking, model versioning, pipeline orchestration, drift detection — and comfort working with modern data infrastructure (cloud warehouse, search/retrieval systems).

What We'Re Looking For

Takes ownership of developing repeatable end-to-end processes, not just outcomes Evaluates technical approaches against production constraints — latency, reliability, retraining cost — not just offline metrics Brings judgment to architecture decisions: knows when to reach for a complex approach and when a simpler one is the right call Treats model health as a permanent responsibility, not a launch milestone Communicates clearly with non-technical partners — can translate model behavior, tradeoffs, and timelines into terms that product and business stakeholders can act on A willing collaborator who keeps people informed and works through ambiguity without going quiet Genuine curiosity about the domain — fashion, resale, taste — and the specific ML problems it creates

Nice To Have

Experience with semantic enrichment, NLP, or multi-modal ML in a production context Genuine curiosity about the domain — fashion, resale, style — and the specific ML problems it creates One last thing — add a quick note at the bottom of your resume (1–3 lines): what drew you to Grailed and this role, and a recent buying or selling experience on any marketplace and what mad