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Senior Machine Learning Infrastructure Engineer, Embedding Platform at Reddit · LumiJobs

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Reddit· Posted 2026-08-12

Senior Machine Learning Infrastructure Engineer, Embedding Platform

Remote - United Statesfull timeRemote

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senior

$253k–$355k

H1B: yes

Reddit Reddit is seeking a Senior Machine Learning Infrastructure Engineer to lead development of large-scale ML platforms powering recommendation systems. The role includes defining ML strategy, building scalable training and serving systems, and mentoring engineers.

Responsibilities

Architect and lead the development of next-generation, large-scale machine learning techniques.
Define and execute the ML strategy, identifying opportunities to enhance personalization and recommendation quality across Reddit.
Lead research initiatives on scalable machine learning systems and real-time model adaptation, bringing cutting-edge advancements into production.
Partner with ML infrastructure teams to build high-performance, distributed training systems that efficiently scale across multiple GPUs and cloud environments.
Establish and optimize real-time serving architectures for large-scale embeddings, ensuring low-latency inference and high throughput.
Collaborate cross-functionally with teams in Feed Ranking, Ads, Content Understanding, and Core ML to integrate ML models into Reddit’s key AI-driven systems.
Mentor and guide senior and mid-level ML engineers, fostering a culture of excellence, innovation, and knowledge sharing.
Stay at the forefront of AI research, evaluating and introducing new modeling paradigms to keep Reddit’s ML ecosystem cutting-edge.
Drive technical discussions, present findings to leadership, and contribute to long-term ML planning and decision-making.
Who You Might Be:
8+ years of experience in machine learning engineering, with a strong focus on large-scale ML systems and recommendation or personalization systems.
Expertise in modern deep learning architectures, including sequence models and foundational models.

Qualification

Required

8+ years of experience in machine learning engineering
Strong focus on large-scale ML systems and recommendation or personalization systems
Expertise in modern deep learning architectures including sequence models

Benefits

Dental
Vision
401(k)
Equity/RSU
Parental Leave
Wellness

Company

View company page

1001-5000 employees

Social Media

Founded 2005

Source: greenhouse

Active within the past hour

Remote-friendly

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