Note: The job is a remote job and is open to candidates in USA. Liftoff is an AI-powered performance marketing platform for the mobile app economy. The Senior Staff Software Engineer on the Accelerate Serving team will design, build, and operate high-throughput, low-latency ad-serving infrastructure, including GPU-powered inference and feature store systems. The role also partners with machine learning engineers to productionize models and owns systems through design, deployment, observability, and optimization.
Responsibilities
- Design, build, and operate the high-throughput, low-latency services that receive bid requests, execute Liftoff’s bidding logic, and respond to ad exchanges in real time
- Improve the performance, scalability, and reliability of systems that process millions of requests per second under strict latency constraints
- Develop and optimize GPU-powered inference services that execute neural network models using TensorRT
- Profile end-to-end inference pipelines to identify and eliminate bottlenecks in GPU utilization, batching, memory access, serialization, networking, and request handling
- Partner with machine learning engineers to productionize new model architectures and features, translating modeling requirements into efficient and reliable serving implementations
- Design and operate large feature store fleets that provide low-latency access to real-time and precomputed features
- Develop benchmarking and performance-analysis tools that help engineers compare models, understand latency and throughput trade-offs, and identify regressions before deployment
- Improve experimentation tooling that allows machine learning teams to orchestrate offline training runs, evaluate candidate models, and maintain model leaderboards
- Own changes through their full lifecycle—from system design and implementation to testing, deployment, observability, capacity planning, incident response, and continued optimization
Skills
- Strong core Computer Science fundamentals (data structures, algorithms, system architecture)
- 10+ years of industry experience
- M.S.. or higher in Computer Science (or equivalent work experience)
- This role is eligible for full-time remote work in one of our entities: CA, CO, ID, IL, FL, GA, MA, MI, MN, MO, NJ, NV, NY, OR, PA, TX, UT, and WA
- We expect our employees to attend these gatherings at least once per quarter
- Experience with Go is a plus
Benefits
- Equity
- Health, vision, and dental benefits associated with the employee's country of residence
- Full-time remote work in one of the approved entities: CA, CO, ID, IL, FL, GA, MA, MI, MN, MO, NJ, NV, NY, OR, PA, TX, UT, and WA
- Medical coverage
- Wellness stipends
- Additional perks based on country of residence
Company Overview
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