Machine Learning Engineer

Liftoff is seeking a Machine Learning Engineer to join the Revenue Engine team. The role focuses on developing statistical models and production systems that balance advertiser performance with Liftoff’s business objectives, while conducting experiments to advance the mobile ad tech economy.

Responsibilities

• Develop statistical models and production systems that align advertiser outcomes with organizational goals.
• Tune optimization parameters, monitor internal competition, and model dynamic environments.
• Design and run experiments to validate theories underpinning the mobile ad tech economy.
• Build applications in areas such as advertiser budget retention and growth, optimal margin allocation, and bidding innovations.
• Collaborate with a diverse team of engineers and partner teams across the company, including Operations and GTM.
• Communicate statistical and machine learning concepts clearly to both technical and non-technical audiences.
• Contribute to an engineering excellence culture through state-of-the-art tooling, risk-aware testing, explainable systems, and rigorous code reviews.

Requirements

• PhD in Computer Science, Machine Learning, Economics, or a related field.
• Industry experience applying economics or machine learning to large-scale problems.
• Strong engineering and coding skills.
• Excellent team communication and collaboration abilities.
• Experience with ad tech is considered a strong plus.

Benefits

• Equity
• Health, vision, and dental benefits
• Medical coverage
• Wellness stipends
• Additional country-specific perks

About the Revenue Engine Team

The Revenue Engine team analyzes the fundamental economics of the mobile ad tech marketplace, including demand elasticity and the effects of competition. Comprising machine learning engineers, software engineers, and data analysts, the team develops theories, validates them through experiments and analyses, and builds production systems that improve outcomes for Liftoff and its advertisers.

Location

The preferred location for this role is within California. Liftoff operates as a remote-first company with U S hubs in Redwood City, Los Angeles, and New York City.

Travel expectations

Liftoff offers in-person team gatherings, including project meetings, regional meetups, and company-wide events. Employees are expected to attend these gatherings at least once per quarter to support collaboration and team-building.

Compensation

Liftoff provides a comprehensive compensation package that includes equity and health benefits aligned with the candidate's country of residence. Base pay varies by location and experience.

• SF Bay Area, Los Angeles/Orange County, NYC, Seattle: $235,000 - $275,000
• All other cities and towns in our approved states: $215,000 - $255,000

Agency and third party recruiter notice

Liftoff does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies in response to job postings. No fee will be paid to third parties who submit unsolicited candidates directly to our hiring managers or Recruiting Team. All candidates must be submitted via our Applicant Tracking System by approved Liftoff vendors who have been expressly requested to make a submission by our Recruiting Team for a specific job opening.