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Lead Machine Learning Engineer

Klaviyo

$188,000 - $282,000
Aug 19, 2025
Boston, MA, US
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Klaviyo aims to build state-of-the-art AI and machine learning technologies to power its products and develop AI agents that can automatically create and execute marketing or customer experiences, strategies, and campaigns for any business, demonstrably outperforming human customers.

Requirements

  • Experience with machine learning frameworks such as Huggingface, PyTorch, Tensorflow, Keras; Experience with distributed training with Spark, Ray, etc.
  • Demonstrated technical leadership in leading high-performing engineering teams and mentoring junior machine learning engineers.
  • Deep understanding of the latest AI technologies and their application in business contexts, including deep learning, recommendation systems, NLP, generative AI, or related areas.

Responsibilities

  • Develop and execute comprehensive technical strategies that align with Klaviyo's business goals, ensuring products are not only exceptional but also aligned with the broader vision for a reliable and user-friendly AI/ML platform.
  • Create AI engines or agents that can automatically create and execute marketing or customer experiences, strategies, and campaigns for any business and demonstrably outperform our human customers at Klaviyo.
  • Introduce conversational AI interfaces into our software to make our customers more efficient users of our products.
  • Build generative AI models that can automatically generate content for marketing given customer input on context, to maximize customer ROI or improve customers’ productivity.
  • Technically lead & coach a diverse team of AI professionals, including data scientists, machine learning engineers, and research scientists.
  • Engage with external and internal stakeholders to understand their needs, translating these into AI-driven roadmaps and solutions that add significant value to customers and the business.
  • Stay abreast of emerging AI trends and technologies, identifying and leveraging opportunities for their application within Klaviyo’s ecosystem.

Other

  • Advanced degree in Computer Science, Artificial Intelligence, Machine Learning, or a related field.
  • 7+ years of experience in AI, machine learning, or related fields, with a track record of successfully leading large-scale AI / machine learning projects launched in products with a significant impact on users / customers.
  • Exceptional communication skills, capable of collaborating with stakeholders from various backgrounds to translate the business / product roadmap into AI-driven technical roadmaps & solutions and add significant value to customers and the business.
  • Experience working in B2B businesses and interacting with customers directly
  • Experience collaborating with Product organizations or other cross-functional organizations to develop machine learning solutions that impact the business.