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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff Machine Learning Engineer, Shopping Ads - **Company:** Pinterest - **Location:** Palo Alto, CA, United States - **Experience:** Expert - **Salary:** $222,716.0 - **Contract:** Permanent contract - **Skills:** A/B Testing, Artificial Intelligence, Content Analysis, Machine Learning, Regression Testing, Azure Machine Learning, Software Engineering, Large Language Models, Generative AI, Information Technology, Low Latency, Entity Resolution - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/28_25304_9ceff44b01351ae1743de0ce58086b50 ## About the Role * 8+ years of industry experience in ML engineering / applied ML / software engineering, including meaningful time operating as a Staff-level (or equivalent) IC delivering complex production systems. * Demonstrated ability to lead 01 ML/LLM efforts: taking ambiguous problem spaces, defining the approach, and delivering a production system with measurable impact. * Strong track record shipping ML-powered systems in domains such as recommendation, ranking, retrieval, content understanding, ads relevance, commerce, or adjacent areas with clear product impact. * Hands-on experience building LLM-powered applications in production (or adjacent GenAI systems), with strong judgment on reliability, failure modes, rollout safety, and practical tradeoffs. * Deep experience with evaluation and measurement: dataset strategy, labeling/review operations, metric design, regression testing, and connecting offline improvements to online outcomes. * Strong systems design skills building data- and ML-intensive systems, with the ability to navigate tradeoffs in performance, reliability, scalability, and cost. * Strong communication skills and the ability to influence technical direction across teams without directly owning every implementation detail. * Demonstrated experience building and enhancing cross-functional partnerships with other teams and organizations. * Bachelor's degree in Computer Science, Engineering, or a related technical field-or equivalent practical experience. ## Description You will also serve as the technical lead for ML in this space-reporting to a Director and acting as the first ML Engineering hire in this org-helping define the technical roadmap, establish engineering standards, and lay the foundation for scaling the domain and team over time. This is a high-agency, high-impact role with direct levers on user trust, relevance, and shopping outcomes across high-traffic Pinterest surfaces (organic and paid)., * Own end-to-end technical delivery for cross-team initiatives-from problem framing and technical strategy through architecture, implementation, rollout, monitoring, and iteration. * Set technical direction and execution plans in partnership with a Director and cross-functional leads, including defining milestones, sequencing, and quality bars for the domain. * Build and evolve ML and GenAI systems that improve merchant quality and understanding (e.g., merchant content enrichment, attribute extraction/normalization, entity resolution, merchant/brand quality signals, and policy-aware transformations), with clear downstream impact on retrieval, ranking, and shopping surfaces. * Establish robust evaluation and measurement practices across ML + LLM-assisted systems, including golden datasets, human-in-the-loop review loops, automated regression testing, offline/online metric alignment, and clear go/no-go launch criteria for quality, safety, and performance. * Design systems with strong attention to quality, cost, latency, reliability, and safety, including guardrails, fallbacks, caching, and observability to support scaled production operations. * Establish the ML engineering operating model for the org (where applicable): evaluation standards, launch readiness reviews, monitoring/alerting, and sustainable ownership practices to keep quality high as the roadmap scales. * Partner with cross-functional stakeholders across Product, Engineering, Data Science, Design, Trust/Policy/Legal, and ML platform teams to align on goals, constraints, and rollout plans-and to turn ambiguous needs into concrete ML deliverables. * Drive experimentation and iteration (A/B tests, holdouts), lead error analysis, and translate learnings into measurable improvements to user trust and shopping outcomes. * Mentor and raise the bar for technical design, evaluation rigor, and production readiness across the team-enabling faster, safer iteration with AI/ML tooling and best practices. * Help scale the domain by supporting hiring and onboarding over time (e.g., interview loops, onboarding plans, technical mentorship), as we build out ML engineering capacity., * We recognize that the ideal environment for work is situational and may differ across departments. What this looks like day-to-day can vary based on the needs of each organization or role. * This role will need to be in the office for in-person collaboration 1-2 times per month and therefore needs to be in a commutable distance from one of the following offices: San Francisco, Palo Alto, Seattle. At Pinterest we believe the workplace should be equitable, inclusive, and inspiring for every employee. In an effort to provide greater transparency, we are sharing the base salary range for this position. The position is also eligible for equity. Final salary is based on a number of factors including location, travel, relevant prior experience, or particular skills and expertise. Information regarding the culture at Pinterest and benefits available for this position can be found here.