Staff Machine Learning Engineer, Auction Intelligence

Liftoff is a leading AI-powered performance marketing platform for the mobile app economy. Our end-to-end technology stack helps app marketers acquire and retain high-value users, while enabling publishers to maximize revenue across programmatic and direct demand.

Liftoff's solutions, including Accelerate, Direct, Monetize, Intelligence, and Vungle Exchange, support over 6,600 mobile businesses across 74 countries in sectors such as gaming, social, finance, ecommerce, and entertainment. Founded in 2012 and headquartered in Redwood City, CA, Liftoff has a diverse, global presence.

At Liftoff, the Supply Auction Intelligence team is crucial to the success of our Publisher side business. Our team is dedicated to designing and building advanced machine learning models that process over a billion events daily, driving significant impact and value. We are rapidly expanding and are a group of innovative engineers leveraging the latest technology to develop efficient and scalable systems.

If you're passionate about building and scaling low-latency, high-throughput systems and have a keen interest in machine learning, we would love to speak with you

• Lead the A/B experiments design and develop machine learning models to drive the business performance of our SSP system.
• Collaborate with the platform team to utilize existing machine learning infrastructure and enhance it as needed to support business goals, ensuring scalability and efficiency for processing high-throughput, low-latency requests.
• Collaborate with data analytics teams to perform statistical analysis on experiment results to fine-tune algorithms and improve performance.
• Collaborate with data engineering teams to ensure a robust inference service, and data pipeline, logging, and aggregating data efficiently and effectively.
• Participate in fostering an "engineering excellence" culture through the adoption of state-of-the-art tools, risk-driven testing, explainable systems, and rigorous code reviews.

• BS/MS degree in Computer Science, Data Science, Mathematics, or a related field.
• 10+ years of total professional technical experience.
  • 5+ years of experience as a Software Engineer.
  • 6+ years of experience leading and executing machine learning projects.
• Deep expertise in machine learning algorithms.
• Extensive practical experience with ML frameworks and libraries.
• Proficiency in at least one of the following programming languages: Python, Go, R, C++, or Java.
• In-depth knowledge of distributed systems and data processing frameworks.
• Strong problem-solving and analytical skills.
• Experience with data visualization tools such as Tableau or Looker.
• Ability to effectively communicate complex technical concepts to both technical and non-technical audiences.
• Highly self-motivated and comfortable working in a dynamic, fast-paced environment.
• Strong passion for learning and contribution to team success.

• Experience in the Ad Tech industry.
• Strong mathematical background, particularly in statistics.
• Experience in Data Engineering and Feature Stores.

Location:
This role is hybrid. During the initial 3 months of onboarding we ask you work a minimum of 3 days/week from our Beijing office (Guomao). After onboarding, we prefer working a minimum of Wednesdays in office.

Travel Expectations:
We offer several opportunities for in-person team gatherings, including but not limited to project meetings, regional meetups, and company-wide events. We expect our employees to attend these gatherings at least once per quarter. These gatherings provide essential opportunities for collaboration, communication, and team building.

Compensation:
Liftoff offers all employees a full compensation package that includes equity and health/vision/dental benefits associated with your country of residence. Base compensation will vary based on the candidate's location and experience.

The following are our base salary ranges for this role:  775, ,000 RMB

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Liftoff offers a fast-paced, collaborative, and innovative work environment where employees are empowered to grow and make an impact. We're shaping the future of the mobile app ecosystem—join us and help accelerate what's next.

Liftoff's compensation strategy includes competitive salaries, equity, and benefits designed to support employee well-being and performance. We benchmark compensation based on role, level, and location to ensure fairness and market alignment. Benefits may include medical coverage, wellness stipends, and additional perks based on your country of residence.

Liftoff is an equal opportunity employer. We are committed to creating an inclusive environment for all employees and applicants regardless of race, ethnicity, national origin, age, marital status, disability, sexual orientation, gender identity, religion, veteran status, or any other characteristic protected by applicable law.

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. No placement fees will be paid to any firm unless such a request has been made by the Liftoff Recruiting Team and such a candidate was submitted to the Liftoff Recruiting Team via our Applicant Tracking System.