Principal Machine Learning Engineer - Consumer Personalization & Generative AI

Gopuff’s Data Science team powers the personalized search, browse and recommendation experiences that shape how customers discover daily goods. We are expanding our mission to include cutting‑edge generative‑AI capabilities. This role will lead the design and deployment of LLM‑driven models that deeply understand customer needs and deliver personalized, timely experiences . You will partner with product managers, engineers and researchers to adapt pre‑trained large language models (LLMs) to Gopuff’s unique business challenges, fine‑tune models using LoRA / qLoRA, build retrieval‑augmented generation (RAG) pipelines, and drive innovation from prototype through production.

You Will :

• Understand customer needs through AI : Build models that interpret intent and context to provide the right product, recommendation or experience at the right moment.
• Fine‑tune and adapt LLMs : Apply LoRA / qLoRA and RAG techniques to customize state‑of‑the‑art LLMs for Gopuff’s domain, using frameworks such as Hugging Face, LangChain and LlamaIndex.
• Architect personalization systems : Design robust pipelines for search, retrieval and ranking that combine generative AI with classic ML, leveraging vector databases and prompt / context optimization.
• Drive algorithmic innovation : Explore and apply new methods in deep learning, reinforcement learning, multi‑task learning and embeddings to improve personalization, recommendations and discovery.
• Develop conversational and Q&A experiences : Build interactive agents that can answer questions, guide product discovery and engage with customers in natural language.
• Deploy at scale : Collaborate with MLOps and engineering teams to productionize models with high scalability, reliability and low‑latency response times.
• Evaluate and optimize : Define metrics, design A / B tests and perform offline / online evaluations to measure model performance, customer satisfaction and business impact.
• Collaborate and educate : Work with product, engineering, design, analytics and leadership teams to translate business needs into AI solutions and communicate data‑science concepts clearly.
• Mentor and lead : Provide technical leadership and mentorship to data scientists and ML engineers, fostering a culture of responsible, customer‑focused AI.
• Stay ahead of the curve : Continuously track emerging LLM architectures, tools and techniques, and integrate them into Gopuff’s AI roadmap.

You Have :

Compensation :

What We Offer :

At Gopuff, we know that life can be unpredictable.Sometimes you forget the milk at the store, run out of pet food for Fido, or just really need ice cream at 11 pm. We get it—stuff happens. But that’s where we come in, delivering all your wants and needs in just minutes.

And now, we’re assembling a team of motivated people to help us drive forward that vision to bring a new age of convenience and predictability to an unpredictable world.

Like what you’re hearing? Then join us on Team Blue.

#LI-GOPUFF

Gopuff is an equal employment opportunity employer, committed to an inclusive workplace where we do not discriminate on the basis of race, sex, gender, national origin, religion, sexual orientation, gender identity, marital or familial status, age, ancestry, disability, genetic information, or any other characteristic protected by applicable laws. We believe in diversity and encourage any qualified individual to apply.

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