
Senior AI Engineer at LottieFiles
Platform for creating and sharing Lottie animations across devices.
Build production AI systems that generate motion/animation from natural language and improve direct generation of a text-native Motion DSL; end-to-end ownership across LLM systems, post-training, code generation, compilers, evaluation, data engineering, and product code; work includes model orchestration, routing, retrieval, tool use, structured generation, validation/repair, visual verification, compiler-backed quality gates, and fixed evaluation batteries; train specialized models via SFT/post-training, distillation, preference optimization, synthetic data, RL, and constrained generation; build training/eval datasets with filtering, provenance, versioning, deduplication, contamination controls, leakage-resistant splits, failure taxonomies, hard negatives, and regression suites; requires experience operating production ML/AI systems, hands-on LLM fine-tuning/post-training, strong evaluation design, and structured/code-generation systems; bonus: multimodal/VLMs, compilers/language tooling, Rust, PyTorch, distributed training, animation/graphics/rendering/creative software
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