Senior Machine Learning Engineer (Mandarin speaking)

Moloco; Edison (CA); On-site; USD 170,000 - 250,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) plan with company match

Flexible Time Off

Potential for bonus and equity awards

Job summary

Moloco is seeking a Senior Machine Learning Engineer to enhance its Ads Quality team. The engineer will design and deploy large-scale machine learning systems that improve ad relevance and optimization, impacting revenue and user experience.

Key responsibilities include developing production pipelines and mentoring engineers. The ideal candidate has 7+ years of experience and is fluent in Mandarin. The position offers a competitive salary ranging from $170,000 to $250,000 and various employee benefits.

Qualifications

• 7+ years of experience building and deploying ML systems at scale.
• Shipped models that improved key product or business metrics.
• Fluency in Mandarin for customer collaboration.
• Strong software engineering fundamentals.

Responsibilities

• Design, build, and deploy large-scale ML systems.
• Collaborate with customers to deliver ML solutions.
• Perform design and code reviews for technical excellence.
• Mentor engineers in ML best practices.

Skills

Machine Learning

Fluency in Mandarin Chinese

Software Engineering

Data Structures

Algorithms

System Design

Proficiency in Python

Experience with PyTorch/TensorFlow/JAX

Distributed Data and Compute Systems

Job description

Impact

As a Senior Machine Learning Engineer on Moloco’s Ads Quality team, you’ll design and scale machine learning systems that directly improve ad relevance, ranking, and optimization. Your work will have a measurable impact on advertiser performance, revenue efficiency, and the overall user experience across Moloco’s ad platform.

Opportunity

• Design, build, and deploy large‑scale ML systems for ad ranking, click‑through prediction, and conversion optimization
• Develop and operate production pipelines that process hundreds of millions of ad requests per day with low‑latency requirements
• Collaborate directly with customers and partners in Mandarin to understand business goals and deliver data‑driven ML solutions
• Apply systematic, reproducible approaches to model training, evaluation, and continuous improvement
• Partner with the Machine Learning Infrastructure and Data teams to improve tooling, deployment pipelines, and training efficiency
• Lead design and code reviews to promote technical excellence and standardize ML practices across Ads teams
• Diagnose model performance, identify optimization opportunities, and execute experiments that drive measurable results
• Mentor engineers on best practices for ML experimentation, productionization, and scaling
• Work cross‑functionally with product, infrastructure, and business teams to align technical innovations with product goals

Qualifications

• You have 7+ years of experience building and deploying ML systems at scale, ideally in AdTech, recommender systems, or search/ranking domains
• You’ve shipped models that directly improved key product or business metrics such as CTR, CVR, or ROI
• You’re fluent in Mandarin Chinese and skilled at collaborating with customers or partners in technical discussions
• You have strong software engineering fundamentals: data structures, algorithms, system design, and proficiency in Python (C++ or Java a plus)
• You’re experienced with modern ML frameworks such as PyTorch, TensorFlow, or JAX
• You’ve worked with distributed data and compute systems like Apache Beam, Dataflow, or Flume
• You understand how to build robust ML pipelines including data versioning, feature engineering, retraining, and model monitoring in production
• You have experience optimizing inference performance on GPUs, TPUs, or similar hardware accelerators
• You thrive in fast‑moving, ambiguous environments and can translate complex technical work into measurable business outcomes
• You value collaboration, accountability, and building systems that scale across teams and markets

Compensation & Benefits

U.S.-based employees have access to medical, dental, and vision insurance, a 401(k) plan with company match, short‑term and long‑term disability coverage, basic life insurance, and well‑being benefits. Employees also receive up to 12 scheduled paid holidays per calendar year, one Thrive Day off per quarter, and Flexible Time Off (FTO). The successful candidate may be eligible for a bonus and equity awards. Salary ranges vary by region: Region A: $200,000–$250,000 USD; Region B: $180,000–$225,000 USD; Region C: $170,000–$212,000 USD.

Equal Opportunity

Moloco is an equal opportunity employer. We highly value diversity in our current and future employees and do not discriminate on the basis of race, color, creed, religion, national origin, age, sex and gender, gender expression and identity, sexual orientation, marital status, ancestry, physical or mental disability, military or veteran status, or any other characteristic protected by law.

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