Senior Machine Learning Engineer, Ranking - Quora

Quora; United States; Remote; USD 140,000 - 200,000; Full time

Job summary

Quora, a remote-first company, is seeking an experienced machine learning engineer to join our distribution team. You will work on recommendation systems, ranking models, and digest emails, with ownership of models from data pipelines to production integration.

The role emphasizes experimentation, autonomy, and impact on Quora's product. Remote work is supported from multiple countries, and coordination hours are Pacific Time.

Qualifications

• Availability for meetings and impromptu communication during Quora's coordination hours (Mon-Fri: 9am-3pm Pacific Time).
• 3+ years of professional experience working on recommendation or ranking models.
• Good understanding of mathematical foundations.

Responsibilities

• Improve our existing machine learning ranking models using your core coding skills and ML knowledge.
• Take end-to-end ownership of machine learning systems - data pipelines, candidate extraction, feature engineering, model training, as well as integration into our production systems.
• Identify new opportunities to apply machine learning to different parts of the Quora product.
• Work with other machine learning engineers to implement algorithms and systems efficiently.

Skills

Machine learning engineering

Ranking models

Data pipelines

Feature engineering

Model training

Production systems

Job description

[Quora is a privately held, "remote-first" company. This position can be performed remotely from multiple countries around the world. Please visit careers.quora.com/eligible-countries for details regarding employment eligibility by country.]\

About Quora

Quora's mission is to grow the world's collective intelligence. To do so, we have two platforms:

Quora: a global knowledge sharing platform with millions of monthly unique visitors, bringing people together to share insights on various topics and providing a unique platform to learn and connect with others.

Poe: a cloud workspace where millions of users run multiple AI agents on shared context and tools. One subscription, every frontier model, and the collaboration layer that makes them work together.

Behind these products are passionate, collaborative, and high-performing global teams. We have a culture rooted in transparency, idea-sharing, and experimentation that allows us to celebrate success and grow together through meaningful work. Join us on this journey to create a positive impact and make a significant change in the world.

This role will be working on our Quora product.

About the Team and Role

Our small engineering team works on challenging problems every day. We have a culture that’s rooted in constantly learning and improving, and our engineers are encouraged to think big and experiment with new ideas. As a remote‑first company, our engineers have a high degree of flexibility and autonomy. Everyone on the engineering team has a significant impact on our product and our company. We are looking for an experienced machine learning engineer to join our distribution team, working on recommendation systems such as feed, notifications, and Quora's famous digest emails. At Quora, we use machine learning in almost every part of the product and recommendation systems play an important role in connecting users with content.

As a ranking modeling expert, you will own and advance the second‑phase ranking model behind feed and digest, one of the highest‑leverage surfaces at Quora, by applying the latest machine learning techniques. You will also play a key role in developing methodologies that our other developers will build on top of.

Responsibilities

• Improve our existing machine learning ranking models using your core coding skills and ML knowledge
• Take end-to-end ownership of machine learning systems - data pipelines, candidate extraction, feature engineering, model training, as well as integration into our production systems
• Identify new opportunities to apply machine learning to different parts of the Quora product
• Work with other machine learning engineers to implement algorithms and systems efficiently

Minimum Requirements

• Availability for meetings and impromptu communication during Quora's "coordination hours" (Mon-Fri: 9am-3pm Pacific Time)
• 3+ years of professional experience working on recommendation or ranking models
• Good understanding of mathematical foundati