Software Engineer, ML Data

Liftoff Mobile; San Francisco (CA); Hybrid; USD 180,000 - 230,000; Full time

Benefits offered by this job

Equity

Health benefits

Wellness stipend

Job summary

Liftoff is a leading AI-powered performance marketing platform for the mobile app economy. The company is expanding its ML Data Platform team in the Bay Area to build a next-generation ML platform that supports neural networks and large-scale ML workloads.

The Software Engineer will collaborate with ML, software, and infrastructure engineers to design and implement scalable data lake infrastructure, model-training pipelines, analytics, and monitoring.

Qualifications

• Very strong coding ability in Python and Golang.
• Strong core CS fundamentals (data structures, algorithms, architecting systems)
• 6+ years of industry experience
• Experience with Spark is a plus.
• Experience working in a high-growth startup atmosphere is a plus
• Experience building Machine Learning tooling or platforms, in particular when applied to large-scale problems
• A passion for quality and excellence, and the ability to temper it when necessary to ship

Responsibilities

• Work with an experienced team of ML, Software, and Infrastructure Engineers that are building the ML platform for Liftoff
• Design, engineer & implement reliable, scalable, and cost-efficient systems to support data lake infrastructure, dataset generation, model training infrastructure, analytics, reporting and monitoring infrastructure
• Deliver business results by enabling next generation ML models and technologies
• Utilize vendor-based products (AWS, Weight & Biases, etc.), open-source technologies (PyTorch, PySpark, Trino, Hive, Iceberg, Clickhouse, etc.) and in-house tooling

Skills

Python

Golang

CS fundamentals

Spark

Startup experience

ML tooling

Quality focus

Tools

Spark

Job description

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.

About the team: With our success over the past 10 years, we are ready to move beyond our current technologies and build the next generation ML Platform to align with our current business needs as we continue to grow. Currently using a custom setup, we handle 1.5 billion ML inferences per second, every day. We are now building a new ML platform to support neural networks at that scale to increase the intelligence of our models.

As a Software Engineer on the Machine Learning Data Platform team at Liftoff, you will:

• Work with an experienced team of ML, Software, and Infrastructure Engineers that are building the ML platform for Liftoff
• Design, engineer & implement reliable, scalable, and cost-efficient systems to support data lake infrastructure, dataset generation, model training infrastructure, analytics, reporting and monitoring infrastructure
• Deliver business results by enabling next generation ML models and technologies
• Utilize vendor-based products (AWS, Weight & Biases, etc.), open-source technologies (PyTorch, PySpark, Trino, Hive, Iceberg, Clickhouse, etc.) and in-house tooling
  

Desired qualities and experience:

• Very strong coding ability in Python and Golang.
• Strong core CS fundamentals (data structures, algorithms, architecting systems)
• 6+ years of industry experience
• Experience with Spark is a plus.
• Experience working in a high-growth startup atmosphere is a plus
• Experience building Machine Learning tooling or platforms, in particular when applied to large-scale problems, is a big plus
• A passion for quality and excellence, and the ability to temper it when necessary to ship
  

Location: This role is eligible for hybrid work, 2 days per week in one of our Bay Area offices in Redwood City or San Francisco.

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:

• SF Bay Area: $180,000 - $230,000

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.