Machine Learning Engineer

Sorry, this job was removed at 04:15 p.m. (CST) on Monday, Jun 30, 2025
Easy Apply
Redwood City, CA
In-Office
AdTech • Big Data • Machine Learning • Marketing Tech • Mobile • Software
Liftoff helps mobile businesses grow.
The Role

Liftoff is the leading growth acceleration platform for the mobile industry, helping advertisers, publishers, game developers and DSPs scale revenue growth with solutions to market and monetize mobile apps.

Liftoff’s solutions, including Accelerate, Direct, Influence, 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.

Improve and maintain Machine Learning (“ML”) models and the underlying ML software tooling and infrastructure. Provide feedback on loop from hypothesis generation to live AB testing, with no cross-team friction and sub-day iteration cycles. Take on unique modeling challenges not covered in the scientific literature, like extreme positive sample sparsity and labelling delay. Work with modeling techniques at the state-of-the-art of probability prediction, as well as a multitude of other ML (Machine Learning) areas from NLP (Natural Language Processing) to CNNs (Convolutional Neural Network). Utilize knowledge in Clojure, Go, and the many other cutting-edge opensource technologies that maximize the Company’s development velocity. Analyze information to determine, recommend, and plan installation of a new system or modification of an existing system. Consult with systems analysts, engineers, programmers and others to design systems and to obtain information on project limitations and capabilities, performance requirements and interfaces. Use strong communication skills (written and verbal) to consult with data processing or project managers to obtain information on limitations or capabilities for data processing projects. Telecommuting may be permitted. When not telecommuting, must report to 900 Middlefield Road, 5th Floor, Redwood City CA 94063.Salary: $250,000 - $340,000 per year.


MINIMUM REQUIREMENTS: Bachelor’s degree or U.S. equivalent in Computer Science, Electrical Engineering, or related field, plus 5 years of professional experience as Machine Learning Engineer, Software Engineer, or any occupation/position/job title involving developing and improving machine learning infrastructure.   


In lieu of a Bachelor's degree plus 5 years of experience, the employer will accept a Master's degree or U.S. equivalent in Computer Science, Electrical Engineering or related field, plus 3 years of professional experience as Machine Learning Engineer, Software Engineer, or any occupation/position/job title involving developing and improving machine learning infrastructure.


Must also have experience in the following: 3 years of professional experience performing coding utilizing at least two of the following: Python, PyTorch, PySpark, or Go; 3 years of professional experience applying machine learning to large scale problems; 3 years of professional experience utilizing computer science fundamentals, including data structures, algorithms, and architecting systems; 3 years of professional experience performing A/B testing; and 3 years of professional experience applying ML (including installs, events and revenue predictions) in Adtech industry.


#LI-DNI 


We use Covey as part of our hiring and / or promotional process for jobs in NYC and certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. We began using Covey Scout for Inbound on January 22, 2024.

Please see the independent bias audit report covering our use of Covey here.

Liftoff is committed to providing and maintaining a work environment where all employees and candidates are treated with dignity and respect and that is free of bias, prejudice, and harassment. Liftoff is further committed to providing an equal employment opportunity for all employees and candidates for employment free from discrimination and harassment on the basis of sex, gender (including sexual harassment, gender harassment, and harassment due to pregnancy, childbirth, breastfeeding, and related conditions), sexual orientation, gender identity, gender expression, gender nonconformity, race, creed, religion, color, national origin, ancestry (including association, affiliation, or participation with persons or activities related to national origin, English-proficiency or accent, or immigration status), physical or mental disability, medical condition(s), genetic information of an individual or family member of the individual, marital or domestic partner status, age, veteran or military status, family care status, requesting or taking pregnancy, parental or disability leave, requesting an accommodation, or any other characteristic protected by federal, state, or local law, regulation, or ordinance. All such discrimination and harassment is unlawful and will not be tolerated. Liftoff maintains a continued commitment to equal employment opportunity and expects the full cooperation of all personnel.


Liftoff's Compensation Strategy

Liftoff's compensation strategy includes competitive market rate along with equity and benefits and perks that will give our employees what they need to do their best work. In order to ensure teams are compensated fairly for the work performed, we map out specific levels and take into consideration the cost of labor within each location. Liftoff provides employees a total compensation package of competitive market salaries, equity, health and wellness stipends, medical benefits associated with your country of residence. The base compensation will vary based on location, experience as well as level.


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.

What the Team is Saying

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The Company
HQ: Redwood City, CA
645 Employees
Year Founded: 2012

What We Do

Our mission is to help advertisers, publishers, game developers and Demand Side Platforms scale revenue growth with solutions to market and monetize their mobile apps. We support over 6,600 mobile businesses across 74 countries in sectors such as gaming, social, finance, e-commerce, and entertainment. As a globally distributed team, we value collaboration and communication. We care about fostering a welcoming and inclusive culture for our all of our team members and beyond.

Come join the rocket ship! 🚀

Why Work With Us

Our values -Growth Mindset, Guided By Data, Agency & Urgency, In This Together- fuel our team-first approach in continually ensuring every employee is supported, valued, and empowered. Come join our team!

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Liftoff Offices

Remote Workspace

Employees work remotely.

We are a remote first company with Hubs located around the world. These Hubs are a place for employees and teams to gather for purposeful, collaborative and productive work and to host events throughout the year.

Typical time on-site: None
HQRedwood, CA
Singapore
Berlin, DEU
Seoul, KR
Helsinki, FIN
London, UK
Los Angeles, CA
New York, NY
Paris, FRA
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