Senior GenAI Software Engineer (North America)
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AI Summary
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.
Join Liftoff as a GenAI Software Engineer and shape the future of ad tech. This role sits within the Creative GenAI (CGenAI) team and is dedicated to advancing the strategic initiatives that define how Liftoff applies generative AI to creative. Reporting to the Senior Director, Creative GenAI, you'll build intelligent agents to optimize workflows, and architect AI-powered solutions that transform how our business operates by leveraging cutting-edge vision and diffusion models to revolutionize creative production.
In this role, you'll have an immediate impact on our AI strategy and product development. We foster a collaborative environment where you'll work closely with key decision makers to bring innovative solutions to life. You'll have the freedom to experiment, mentor others, and grow into a thought leader who defines not just Liftoff's AI future, but influences the broader ad tech industry.
This role is ideal for an engineer who thrives in ambiguity, has a passion for experimentation, and wants to push the boundaries of what's possible with LLMs. You'll have the opportunity to tackle complex challenges, validate new approaches, and drive meaningful improvements across our organization.
WHAT YOU'LL DO
- Architect and ship AI systems that generate ad creatives end-to-end - including interactive playables - combining code generation, multimodal asset generation, and runtime quality into production-grade pipelines
- Rapidly prototype against real creative problems, then take what works from proof-of-concept to production at speed
- Partner closely with creative strategists, content leads, and builders to translate craft expertise into systems that scale
- Design robust systems that handle the inherent variability of AI-generated output through thoughtful guardrails, fallbacks, and quality gates
- Build evaluation infrastructure tailored to creative output, spanning subjective quality assessment, human-in-the-loop review, and A/B testing against real ad performance
- Drive innovation by researching new model capabilities and proposing new initiatives as the frontier moves
- Mentor the team and raise the bar on engineering practices, fostering an environment of open feedback and shared learning.
WHO YOU ARE
- Minimum Bachelors Degree and 5yrs of relevant experience.
- Senior engineer with significant pre-LLM production experience and solid fundamentals in system design, debugging, and observability
- Strong in Python for AI/agent work and fluent in JavaScript/TypeScript for creative and playables work; HTML and gaming experience a plus
- Has shipped LLM-powered systems to production, learned the failure modes firsthand, and makes deliberate choices about what the model handles versus what belongs in code, tools, or context
- Treats evals as first-class infrastructure and brings hands-on production experience with multimodal AI, specifically image and/or video generation models, with battle-tested intuition for where they excel and where they break.
- Clear communicator who collaborates well across teams and disciplines, navigating ambiguity and adapting as priorities shift
- Location: Eastern Standard Time Zone - (part of the team is located in London, U.K.)
Location:
Liftoff follows a philosophy of "remote first, come together meaningfully" and allows employees to be based from a number of different states where we have entities within the United States (FL, GA, MA, MI, NJ, NY, PA,). The preferred location for this role is within Eastern Standard Time Zone.
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.
- SF Bay Area/Los Angeles/Orange County/Seattle: $180,000 - $230,000
- All other U.S approved states: $165,000 - $211,000
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#LI-REMOTE
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.
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