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Senior Lead AI Engineer
Coupa SoftwareSr. Lead AI Engineer at Coupa, focused on model training and iteration for ML systems.
Posted 6/27/2026full-timeFoster City • California • 🇺🇸 United StatesSenior💰 $244,333 - $284,867 per yearWebsite
Tech Stack
Tools & technologiesCloudPythonPyTorch
About the role
Key responsibilities & impact- Build and own the end-to-end model fine-tuning pipeline: data preprocessing, training, evaluation, and model registry.
- Implement and optimize fine-tuning techniques (QLoRA, LoRA, PEFT, full fine-tune) for our training workloads.
- Design and maintain evaluation harnesses with task-specific benchmarks and automated regression testing.
- Drive the training iteration loop: analyze results, diagnose failure modes, improve data and configuration.
- Implement experiment tracking, hyperparameter optimization, and reproducible training workflows.
- Collaborate on training data strategy with data engineering, including synthetic data generation.
- Evaluate model quality across safety, accuracy, latency, and cost dimensions.
- Contribute to model serving architecture and inference optimization.
- Mentor ML engineers across the team.
Requirements
What you’ll need- 10+ years of software engineering experience, with 4+ years focused on ML/NLP systems.
- Hands-on experience fine-tuning large language models with parameter-efficient methods.
- Strong knowledge of transformer architectures, tokenization, and training optimization.
- Experience building production ML training pipelines with experiment tracking.
- Proficiency in Python, PyTorch, and distributed training frameworks.
- Experience with GPU-based training infrastructure in the cloud.
- Strong evaluation methodology: designing benchmarks, measuring quality, detecting regressions.
- Experience with RLHF, DPO, or other alignment techniques is a strong plus.
- BS/MS in Computer Science, Machine Learning, or equivalent experience.
Benefits
Comp & perks- Health insurance
- 401(k)
- Paid time off
- Flexible work arrangements
- Professional development
ATS Keywords
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Hard Skills & Tools
model fine-tuningdata preprocessingtrainingevaluationQLoRALoRAPEFThyperparameter optimizationPythonPyTorch
Soft Skills
mentoringcollaborationanalysisdiagnosing failure modesimproving data and configuration
Certifications
BS in Computer ScienceMS in Machine Learning