Note: The job is a remote job and is open to candidates in USA. Fetch is entering its AI-first era and is building intelligent systems that power personalization, relevance, and ranking across its platform. The Principal Machine Learning Engineer will design and scale ML infrastructure, real-time learning systems, data pipelines, and distributed systems while providing technical leadership across engineering teams. The role also includes mentoring engineers and shaping architecture for personalization, search, ranking, ad tech, and feature systems at consumer scale.
Responsibilities
- **Architect for Scale and Intelligence:** Design and evolve the ML infrastructure supporting personalization, search, ranking, and ad tech. Build systems that prioritize relevance, adaptability, and measurable user value
- **Advance Intelligence in Production:** Design and implement zero-to-one systems, including real-time learning and data pipelines. Define architectural patterns for feature infrastructure, model serving, and low-latency, high-throughput decision-making at consumer scale
- **Evolve the ML Platform:** Advance the core systems powering personalization and ranking, including data infrastructure, distributed systems, and large-scale data pipelines. Pioneer new approaches that raise both model performance and system efficiency
- **Lead Through Influence and Product Partnership:** Drive technical design, architecture, and cross-team alignment for major ML initiatives. Partner with product and engineering teams to create dynamic systems that adapt to evolving user preferences, and translate architectural tradeoffs into measurable outcomes
- **Scale Experimentation & Learning Systems:** Improve streaming and real-time learning infrastructure to enable faster iteration across ranking, personalization, and search systems
- **Accelerate Innovation Velocity:** Use AI tools to accelerate your work, including designing features and validating ideas with ChatGPT and Claude sandboxes, leveraging AI for code generation and technical prototyping, using AI assistants for systems architecture diagramming and design validation, and exploring LLMs to enhance personalization, conversational search, and feature creation
- **Mentor & Multiply Engineering Impact:** Coach senior engineers and rising technical leads, elevating standards for architectural clarity, technical execution, and design quality. Help raise the bar across the team and amplify impact through reusable frameworks and technical patterns
- **Model Technical Excellence:** Operate effectively in high levels of ambiguity with minimal direction, prioritizing effectively and driving impact. Shape the engineering culture around thoughtful, zero-to-one system design
Skills
- * Proven experience building and scaling ML infrastructure in support of personalization, relevance, search, or ad tech systems
- * Deep hands-on expertise in data infrastructure, distributed systems, and large-scale data pipelines for ML systems
- * Experience working at a consumer product company with ML models operating at scale
- * Prior contributions to ranking, personalization, or ad tech systems with measurable business impact
- * Strong systems design skills, with a track record of leading architecture and communicating design tradeoffs
- * Experience mentoring and elevating other engineers
- * Success leading zero-to-one technical initiatives and delivering new infrastructure or ML systems from scratch
- * Ability to operate in high levels of ambiguity with minimal direction, prioritizing effectively and driving impact
- This role can be based in one of our US offices or remotely within the United States
- * Familiarity with LLMs and their application in personalization, feature creation, and conversational search
- * Experience with streaming/real-time learning systems
- * Exposure to conversational search or large-scale information retrieval
- * Previous work bridging model development with real-time serving systems
Benefits
- Equity: We offer full-time employees equity in Fetch, so that everyone can benefit from Fetch’s growth.
- 401k Match: Dollar-for-dollar match up to 4%.
- Benefits for humans and pets: We offer comprehensive medical, dental and vision plans for everyone including your pets.
- Continuing Education: Fetch provides ten thousand per year in education reimbursement.
- Employee Resource Groups: Take part in employee-led groups that are centered around fostering a diverse and inclusive workplace through events, dialogue and advocacy. The ERGs participate in our Inclusion Council with members of executive leadership.
- Paid Time Off: On top of our flexible PTO, Fetch observes 9 paid holidays, as well as our year-end week-long break.
- Robust Leave Policies: 20 weeks of paid parental leave for primary caregivers, 14 weeks for secondary caregivers, and a flexible return to work schedule.
- Calvin Care Cash: Employees who are welcoming new family members will also receive a one time $2,000 incentive to assist employees with covering the cost of childcare, clothing, diapers and much more!
- Flexible Work Environment: Collaborate with your team in one of our stunning offices, or you can work fully remotely from anywhere in the US. We’ll ensure you are equally equipped with the hardware and software you need to get your job done in the comfort of your home. (applicable for most roles)
Company Overview
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