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.
As a Senior Staff Software Engineer on the Training & Serving Team, you will:
- Design and build scalable, resilient infrastructure for training and serving deep learning models, ensuring millisecond-level latency and high availability under heavy traffic.
- Collaborate with ML modeling and platform teams to productionize cutting-edge neural network models, ensuring infrastructure meets the demands of evolving model architectures and workloads.
- Instrument and monitor system performance with detailed observability tooling, proactively identifying bottlenecks in model inference, data throughput, or distributed training.
- Profile and optimize ML model performance across the training and inference stack.
- Build internal tooling and automation to accelerate the ML experimentation cycle — including experiment tracking, model versioning, reproducibility tools, and rapid feedback loops for researchers and engineers.
- Utilize vendor-based products (AWS, etc.), open-source technologies (PyTorch, PySpark, etc.) and in-house tooling.
Requirements:
- Very strong coding ability (any backend language)
- Strong core CS fundamentals (data structures, algorithms, architecting systems)
- 12+ years of related experience with a Bachelor’s degree; 8+ years and a Master’s degree
- Experience building Machine Learning tooling or platforms, in particular when applied to large scale problems
- Experience with NVIDIA Triton, PyTorch, or PySpark is a big plus
- Experience working in high-growth startup atmosphere is a plus
- A passion for quality and excellence, and the ability to temper it when necessary to ship
Nice to haves:
- Previous experience in ad-tech
- Python, Golang
Working at Liftoff 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!
Locations:
This role is eligible for full-time remote work preferably in Pacific Standard Time Zone in one of our entities/states and Canada: CA, CO, NV, OR, UT, and WA.
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 candidate's location and experience.
The following are our base salary ranges for this role:
- SF Bay Area, Los Angeles/Orange County, NYC, Seattle: $250,000 - $315,000
- Olympia, San Diego, Santa Barbara: $230,000 - $290,000
- All other cities and towns in our approved states: $215,000 - $270,000
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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.
