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Software Engineer, Applied Machine Learning

Fal - San Francisco, CA, United States - In-office - posted 2026-10-09

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Fal is building the generative media ecosystem and infrastructure powering the next generation of AI products. The company provides a unified platform combining high-performance inference, orchestration, and observability to help developers and enterprises move from idea to production at scale. As a Software Engineer in Applied Machine Learning, you will take technical ownership of the model layer powering Fal's next-generation generative media platform, bridging cutting-edge generative research with scalable, consumer-facing products. Key responsibilities: - Develop novel model pipelines by extending state-of-the-art open-source image, video, audio, and 3D models with additional capabilities and modalities. Design novel approaches to model conditioning, generation, and editing using both training-free methods and fine-tuning. - Build and maintain fine-tuning APIs that leverage Fal's GPU fleet, enabling customers to customize models for their specific needs. - Identify common patterns across served models and develop reusable components, abstractions, and building blocks that accelerate development of new model capabilities and inference pipelines. - Collaborate with the ML Performance & Optimization team to apply state-of-the-art inference techniques, ensuring models run efficiently with low latency, high throughput, and optimal GPU utilization. - Build, deploy, and maintain scalable, reliable generative model APIs. Anticipate and resolve production challenges to ensure reliable service at scale. - Work directly with customers, including major e-commerce retailers and film/TV production studios, to develop novel solutions for their generative media needs. Requirements: - 3+ years of professional experience as an Applied ML Engineer, with at least 1–2 years focused on generative media or computer vision. - Expert-level proficiency in Python and PyTorch. - Deep practical understanding of diffusion and flow-based generative models. - Hands-on experience with open-weight model ecosystems (Hugging Face, Diffusers, related tooling). - Strong engineering judgment in designing scalable, reliable, secure, and performant ML systems for production. - Experience designing and implementing training-free extensions to generative models (novel conditioning, inference-time modifications, new capabilities). - Experience developing custom post-training or fine-tuning approaches for generative models. - Demonstrated ability to independently take ambitious ML ideas from concept to production. Nice-to-haves: - Track record in fast-paced startup environments or digital media/entertainment industries.

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