Staff Applied AI/ML Engineer - Growth

Gusto•Toronto, NY

1d•$225,000 - $285,000•Hybrid

About The Position

At Gusto, we're on a mission to grow the small business economy. We handle the hard stuff—like payroll, health insurance, 401(k)s, and HR—so owners can focus on their craft and customers. With teams in Denver, San Francisco, and New York, we’re proud to support more than 400,000 small businesses across the country, and we’re building a workplace that represents and celebrates the customers we serve. Learn more about our Total Rewards philosophy . About the Role: Gusto’s Data Science team leverages Gusto’s rich dataset to guide product direction and decision-making. We operate full-stack, conducting analyses, prototyping and deploying predictive models and statistical tools both for internal use and for our customers. For this role, we are looking for a technical leader (an individual contributor) to drive our customer facing upsell motions. You will improve a model-driven recommendation platform to better understand our customers, build lead scoring to drive Sales outreach, and predict and experiment against customer preferences in terms of communication timing and content. Overall you will be improving the long- term value that a customer gets from Gusto by ensuring that they use the products that are most relevant to their business needs and growth. You’ll be working with a strong AI/ML team and seasoned Growth leaders in Engineering, Product, Design, Data Science, Marketing, and Sales. In this role, you’ll work cross functionally to build Platforms that span the entire breadth of the Growth Stack using machine learning and AI to personalize world class content for our customers and provide timely relevant product recommendations.

Requirements

7+ years’ hands-on experience building and deploying end-to-end ML/AI systems in industry or academia.
Deep expertise in one or more advanced ML methods (supervised, unsupervised, reinforcement learning, deep learning, NLP, LLMs, RAG, etc.).
Proven track record of delivering large, impactful ML/AI projects into production environments.
Proficient in modern ML frameworks (TensorFlow, PyTorch, HuggingFace, etc.) and cloud computing platforms (AWS, GCP, or Azure).
Strong programming skills in Python and familiarity with best engineering practices (CI/CD, testing, code review).
Demonstrated leadership in cross-disciplinary teams and ability to mentor scientists and engineers.
Excellent communication skills and business acumen.
Ph.D. or Master’s degree in Computer Science, Machine Learning, Statistics, Mathematics, or a related field is a plus.

Nice To Haves

Hands-on experience building LLM (Claude, Gemini, OpenAI, etc,) based applications and agentic AI workflows.
Experience developing and deploying modeling solutions such as propensity scoring, recommendation engines, and forecasting.
A background in growth-oriented product development will accelerate the impact you can generate.

Responsibilities

Design and develop scalable, production-grade AI and machine learning models for solving complex business problems.
Lead and mentor teams of ML scientists and engineers, fostering a culture of technical excellence and innovation.
Collaborate cross-functionally with product, engineering, and business stakeholders to identify AI opportunities and translate them into actionable solutions.
Stay current with latest AI research; prototype and implement new algorithms and advancements from academia and industry.
Oversee model validation, deployment, evaluation, and lifecycle management, ensuring robust monitoring, explainability, and performance.
Guide technical strategy, roadmap, and architectural decisions for the ML/AI function.
Communicate findings, roadmaps, and performance results clearly to executives and non-technical partners.

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