Machine Learning Engineer

| Seattle, WA
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At Liftoff+Vungle, we’re solving one of the core problems faced by every mobile app: growth. To do so, we build Machine Learning and Big Data-driven technology that can accurately predict which apps a user will like, and connect them in a compelling way. Our systems operate at a scale unseen outside of the largest Internet companies -- processing over 4 million requests per second and interacting with over a billion users a week. Our technology is innovative and we have strong product-market fit; as a result, we're profitable and seeing tremendous growth. Across our engineering teams, we offer a wide range of opportunities for different skill levels and experiences.

As a Machine Learning Engineer at Liftoff, you will:

  • Own both the ML models and the underlying software tooling and infrastructure. Our ML Engineer role combines the classic "ML Scientist" and "Data Engineer" role at other companies.
  • Have a closed feedback 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 areas from NLP to CNNs.
  • Become an expert in Clojure, Go, and the many other cutting-edge open source technologies that maximize our development velocity.
  • Join a nimble, consistently excellent, and experienced engineering team (former Google/LI/Ooyala/etc).

Location: This role is eligible to work out of any of the following US Office locations on a flexible WFH/WFO schedule: Redwood City, San Francisco, and New York City

Desired qualities and experiences:

  • Very strong coding ability (experience in Go and Clojure is a plus).
  • 3+ years of industry experience applying Machine Learning to large scale problems.
  • Strong core CS fundamentals (data structures, algorithms, architecting systems).
  • A passion for quality and excellence, and the ability to temper it when necessary to ship.
  • Sets ego aside in pursuit of finding the best solution, no matter where it comes from.
  • Self-motivated and a great ability to hustle.
  • B.S. or higher in Computer Science. PhD a big plus.

Working at Liftoff+Vungle is fast-paced, fun, and challenging, and we thrive on innovation. Come join our team and help shape the future of the mobile app ecosystem. If this role sounds interesting to you, we would love to hear from you!

Liftoff+Vungle 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+Vungle 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+Vungle maintains a continued commitment to equal employment opportunity and expects the full cooperation of all personnel.


Agency and Third Party Recruiter Notice:

Liftoff+Vungle 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+Vungle 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+Vungle Recruiting Team and such a candidate was submitted to the Liftoff+Vungle Recruiting Team via our Applicant Tracking System.

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Technology we use

  • Engineering
  • Product
  • Sales & Marketing
  • People Operations
    • GolangLanguages
    • JavaLanguages
    • JavascriptLanguages
    • PythonLanguages
    • ScalaLanguages
    • SqlLanguages
    • ClojureLanguages
    • jQueryLibraries
    • ReactLibraries
    • DockerFrameworks
    • GraphQLFrameworks
    • gRPCFrameworks
    • HadoopFrameworks
    • KafkaFrameworks
    • KubernetesFrameworks
    • Node.jsFrameworks
    • SparkFrameworks
    • TensorFlowFrameworks
    • TerraformFrameworks
    • CassandraDatabases
    • DynamoDBDatabases
    • HBaseDatabases
    • HiveDatabases
    • MongoDBDatabases
    • MySQLDatabases
    • PostgreSQLDatabases
    • RedisDatabases
    • AWS (Amazon Web Services)Services
    • GitHubServices
    • TableauAnalytics
    • BalsamiqDesign
    • IllustratorDesign
    • InVisionDesign
    • PhotoshopDesign
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    • AsanaManagement
    • BasecampManagement
    • Google DocsManagement
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    • WordpressCMS
    • HubSpotCRM
    • SalesforceCRM
    • Google HangoutsCollaboration
    • SlackCollaboration
    • ZoomCollaboration
    • MURALCollaboration
    • AsanaProject Management

An Insider's view of Liftoff

What's something quirky about your company?

Best part of Liftoff is the company-wide, mutual encouragement for all to lead w/authenticity, courage, & compassion. Whether it’s fun self-expression or the tough acknowledgment of BIPOC societal & workplace inequities, there’s a tangible motivation to embrace & share my uniqueness & inherent personal responsibility to support the same in others.

Alex

Sr. Sales Engineer

How do you collaborate with other teams in the company?

I think about collaboration as sharing & aligning goals, which creates business alignment. Setting clear goals & direction fosters collaboration toward a common effort, & understanding each other's priorities helps in achieving this win-win scenario. Ultimately, I believe transparency builds mutual trust, enabling us to achieve more as a company.

Darryl

Manager, Regional Sales, Greater China Region

How has your career grown since starting at the company?

I started as an intern and accepted a full-time offer because I knew my team would be supportive of my professional goals. So far, in my first few months, I’ve led a companywide lunch & learn, and I became my team’s culture lead. Overall, I’ve exceeded my expectations in expanding my skill set and have become more confident in my professional self.

Maya

Business Intelligence Analyst

How do your team's ideas influence the company's direction?

Everyday the decisions the ACP team makes on creative optimizations influence Liftoff’s business success. Our job is to tell a more compelling creative story for our customers based on A/B tests. Finding a new animation style or playable concept that gets users excited is not only a win for the customer but for us at Liftoff as well.

Alexandra

Manager, International Creative

What are Liftoff Perks + Benefits

Liftoff Benefits Overview

At Liftoff, we strive to provide an environment where our employees feel empowered to learn and grow. We are driven to continually build an inclusive and ever-changing organization, foster a positive work environment (both in-office and remote), and provide valuable results to our customers. We offer full coverage of your medical, vision, and dental benefits, and also offer family planning services, mental health services, 401k with company matching, and unlimited PTO for all US employees. Some of our perks include monthly stipends for lifestyle, office meals, commuting, and career development.

Culture
Volunteer in local community
Liftoff gives back locally to all of our seven offices globally; this includes in-person and skills-based volunteering employee gift matching, and pro-bono professional services.
Partners with nonprofits
OKR operational model
Team based strategic planning
Pair programming
Open office floor plan
Employee resource groups
Employee-led culture committees
In-person all-hands meetings
Liftoff hosts regional meetings called Liftoff Live designed for team and cross departmental collaboration and trainings. As a global company, we have one in each region, Americas, EMEA and APAC.
Flexible work schedule
Remote work program
Diversity
Dedicated diversity and inclusion staff
Mandated unconscious bias training
Diversity employee resource groups
Our cross department ERGs include Liftoff Ladies, Liftoff Pride, Liftoff Parents, etc.
Hiring practices that promote diversity
Health Insurance & Wellness Benefits
Flexible Spending Account (FSA)
Disability insurance
Dental insurance
Vision insurance
Health insurance
Life insurance
Pet insurance
Wellness programs
Mental health benefits
Financial & Retirement
401(K)
401(K) matching
Company equity
Employee stock purchase plan
As a privately held company, we offer employees stock options.
Performance bonus
Charitable contribution matching
Child Care & Parental Leave Benefits
Childcare benefits
Generous parental leave
Family medical leave
Adoption Assistance
Liftoff offers all employees a Family Planning Stipend of up to $15,000 USD that can be used towards services like IVF, adoption, and gestational carrier support.
Return-to-work program post parental leave
Company sponsored family events
Fertility benefits
Vacation & Time Off Benefits
Unlimited vacation policy
Generous PTO
We offer unlimited PTO.
Paid volunteer time
Paid holidays
Paid sick days
Bereavement leave benefits
Office Perks
Commuter benefits
Liftoff offers Caltrain GoPassess; monthly ride share credits, parking passes, etc.
Company-sponsored outings
Free snacks and drinks
Some meals provided
Company-sponsored happy hours
Onsite office parking
Recreational clubs
Including board game, running, basketball, and book clubs.
Relocation assistance
Fitness stipend
Home-office stipend for remote employees
Mother's room
Professional Development Benefits
Job training & conferences
Lunch and learns
Promote from within
Mentorship program
Continuing education stipend
Online course subscriptions available
Customized development tracks
Paid industry certifications
Virtual coaching services

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