Staff Machine Learning Engineer - Moloco Commerce Media

Moloco; Edison (CA); On-site; USD 232,000 - 290,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

401(k) with company match

Disability coverage

Life insurance

Well-being benefits

Paid holidays and Thrive Day off

Flexible Time Off

Job summary

Moloco is seeking an experienced ML Engineer to design, build, and productionize core ML models for CTR, retrieval, conversion, and search/recommendation across Moloco Commerce Media.

You will lead end-to-end experimentation, partner with cross-functional teams, and drive low-latency, high-throughput inference at scale while mentoring other ML engineers.

Qualifications

• 8-12 years of experience in applied machine learning or ML engineering, shipping production models in ads, recommender systems, search, or large-scale ecommerce.
• Hands-on with Python, PyTorch/TensorFlow/JAX, feature stores, distributed training, and large-scale data processing frameworks.
• Experience building and optimizing CTR predictors, retrieval models, conversion models, or recommendation systems; transformer architectures welcomed.

Responsibilities

• Design, build, and productionize core ML models for CTR, retrieval, conversion, and search/recommendation.
• Lead end-to-end experimentation from framing to online A/B testing and iteration.
• Partner with product, engineering, and go-to-market teams to translate requirements into robust ML solutions.
• Drive ML stack excellence by improving pipelines, model serving, and monitoring for low-latency, high-throughput inference.
• Mentor and uplift other ML engineers through design reviews and best practices.

Skills

8-12 years experience

Cross-functional collaboration

Mentoring

Education

Bachelor's degree in CS or related field

Tools

Python

PyTorch

TensorFlow

JAX

Feature stores

Distributed training

Large-scale data processing

Job description

About Moloco:

Moloco builds some of the most powerful AI advertising solutions in the world. Our name - short for "machine learning company" - reflects our core mission: democratizing access to the advanced AI that has historically been reserved for tech giants. Led by machine learning pioneers who built some of the most successful ad systems at Google, including YouTube's monetization engine and key search advertising technologies, we're transforming how businesses grow and compete in the digital economy.

Built with AI from day one, Moloco’s planet-scale machine learning platform powers a suite of solutions for advertising growth and monetization. Moloco Ads is an AI-powered platform that delivers real business outcomes for mobile app marketers through performance-based user acquisition. Moloco Commerce Media enables retailers and marketplaces to build revenue-generating ad businesses that balance user experience and advertiser performance.

Moloco is headquartered in Silicon Valley, with offices in Seattle, New York, San Francisco, Seoul, Beijing, Singapore, Gurgaon, Tokyo, Shanghai, London, Tel Aviv, and Berlin.

Moloco is a truly rewarding place to work and in an exciting period of growth, which you could be a part of.

The Impact You’ll Be Contributing to Moloco
Design and deliver cutting-edge machine learning models that power Moloco’s Commerce Media products, serving as the core "engine" behind ads ranking, recommendations and search for retail media customers.

Advance the performance, scalability, and reliability of our core ad prediction and retrieval systems so customers can unlock meaningful business outcomes from their first campaigns onward.

The Opportunity

• Design, build, and productionize core ML models for CTR prediction, retrieval, conversion, and search/recommendation that directly drive performance for Moloco Commerce Media customers.
• Lead end-to-end experimentation cycles, from problem framing and offline modeling to online A/B testing and iteration, to continuously improve auction, ranking, and recommendation quality.
• Partner closely with product, engineering, and solutions teams to translate retail media and ecommerce requirements into robust ML solutions, features, and evaluation frameworks.
• Drive technical excellence across the ML stack by improving pipelines, model serving, and monitoring for low-latency, high-throughput, and highly reliable inference at scale.
• Mentor and uplevel other machine learning engineers through design reviews, knowledge sharing, and best practices in modern ML and MLOps.

How Do I Know if the Role is Right For Me?

• Bring 8-12 years of experience in applied machine learning or machine learning engineering, with a track record of shipping production models in ads, recommender systems, search, or large-scale ecommerce.
• Apply deep hands-on expertise with modern ML toolchains (e.g., Python, PyTorch/TensorFlow/JAX, feature stores, distributed training, and large-scale data processing frameworks) to solve complex ranking and prediction problems.
• Demonstrate experience building and optimizing models such as CTR predictors, retrieval models, conversion models, or recommendation systems, ideally including exposure to transformer-based architectures.
• Navigate ambiguity by breaking loosely defined or novel business problems into well-structured ML projects, defining metrics, setting up experiments, and iterating based on data.
• Collaborate effectively with cross-functional partners, tailoring complex technical concepts for non-technical stakeholders to drive alignment and decision-making across product, engineering, and go-to-market teams.
• Lead as the most senior technical IC on a team, independently owning high-impact technical initiatives, influencing architecture and roadmap decisions, and setting a high bar for code quality and model performance.
• Thrive in a fast-moving environment where combining rigorous experimentation with pragmatic engineering unlocks measurable value for advertisers, retailers, and end customers.

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 and perks. U.S.-based employees also receive up to 12 scheduled paid holidays per calendar year and one Thrive Day off per quarter. Additionally, all employees have Flexible Time Off (FTO).

The successful candidate may be eligible for a bonus and equity awards. Eligibility and amounts are determined by performance and the terms of the applicable plans.

The location for this role is listed above. For base pay range purposes, location-based compensation is grouped into the following regions. Your region is determined by your assigned work location.

• Region A: Menlo Park Office, New York Office, SF Bay Area, New York Metro Area
• Region B:Seattle Office, Seattle, Los Angeles/Orange County, San Diego, Austin, Boston, Washington DC Metro Area, Miami
• Region C: All other U.S. locations

Salary Ranges:

Region A: $232,000-$290,000 USD

Region B: $208,800-$261,000 USD

Region C: $197,200-$246,500 USD

Moloco Thrive: Benefits and Well-Being:

We take care of you and create the conditions for you to do the best work of your career. Through a lens of inclusion, we offer innovative benefits that empower your employees to take care of themselves and their families so they can do the best work of their lives.

Moloco Values:

• Lead with Humility: Everyone’s voice is respected, valued, and heard. With humility, we become more open and accessible to each other. We win, lose, and learn together. Accountability and feedback are essential to our success.
• Uncapped Growth Mindset: We see all situations as opportunities to learn, grow, and improve as individuals and as an organization. We seek diverse perspectives, encourage curiosity, and promote experimentation to push the boundaries of what’s possible.
• Create Real Value: We pursue the most impactful opportunities with rigor and integrity. We take intelligent risks and make disciplined trade-offs to maintain deep focus. We help our customers win by delivering durable value.
• Go Further Together: We’re one team working towards one mission and vision. We collaborate proactively and inclusively, involving the right people at the right time and in the right way. We strive to create a more equitable workplace. We won’t let each other fail.

Additional Resources:

• Moloco Company Blog
• Moloco Leadership
• Moloco Newsroom

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