Senior Machine Learning Engineer

AHU Technologies Inc.; United States; On-site; USD 150,000 - 190,000; Full time

Job summary

AHU Technologies Inc. is seeking a Senior Machine Learning Engineer for a fully remote role based in the United States.

You will own end-to-end ML systems, from model development to production, with a strong focus on discovery, recommendation, search, and content continuation. Collaborate with product and engineering teams to design, launch, and analyze experiments; implement two-tower models, embedding retrieval, candidate generation, and ranking; and optimize online/offline evaluation to

Qualifications

• 5+ years industry experience building production ML systems with senior ownership.
• Hands-on recommendation, search, ranking, ads ranking, feed ranking, or content discovery systems.
• Consumer apps, entertainment, social, gaming, creator, or engagement-driven products.
• Two-tower models, embedding retrieval, candidate generation, ranking, and online/offline evaluation.

Responsibilities

• Build recommendation and search across feed, discovery, search, and content continuation.
• Own retrieval/ranking: candidate generation, embeddings, two-tower models, features, and serving quality.
• Design, launch, and analyze recommendation/search experiments.

Skills

Production ML systems

Senior ownership

Recommendation systems

Search ranking

Two-tower models

Embedding retrieval

Online/offline evaluation

Education

Bachelor's degree (China)

Job description

Location:

United States - remote

Visa:

US Citizens or Green Card Holders

Fluency in Chinese/Mandarin is required, so only reach out exclusively to candidates of Chinese ethnic background.

What you will own

• Build recommendation and search across feed, discovery, search, and content continuation.


• Own retrieval/ranking: candidate generation, embeddings, two-tower models, features, and serving quality.


• Design, launch, and analyze recommendation/search experiments.

Requirements

• 5+ years industry experience building production ML systems with senior ownership.


• Bachelor's degree from a recognized university in China is required


• Hands-on recommendation, search, ranking, ads ranking, feed ranking, or content discovery systems.


• Consumer apps, entertainment, social, gaming, creator, or engagement-driven products.


• Two-tower models, embedding retrieval, candidate generation, ranking, and online/offline evaluation.

Hard filters

• 5+ years industry experience building production ML systems with senior ownership.


• Hands-on recommendation, search, ranking, ads ranking, feed ranking, or content discovery systems.


• Consumer apps, entertainment, social, gaming, creator, or engagement-driven products.


• Two-tower models, embedding retrieval, candidate generation, ranking, and online/offline evaluation.

Strong fit

• Build recommendation and search across feed, discovery, search, and content continuation.


• Own retrieval/ranking: candidate generation, embeddings, two-tower models, features, and serving quality.


• Background in the entertainment or social media industry (e.g., TikTok, Pinterest, Instagram).


• Design, launch, and analyze recommendation/search experiments.

Bonus:

• Bonus signal: 5+ years production ML


• Bonus signal: recommendation systems


• Bonus signal: search ranking


• Bonus signal: embedding retrieval

Anti-signals

• Cannot show core Senior Machine Learning Engineer, Recommendation experience


• Not comfortable with the listed work mode


• Low ownership, coordination-only, or no shipped examples

This is a remote position.