Senior AI Engineer, NLP & Training Data - 11316

What You’ll Do

• 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.

What You Will Bring to Coupa

• 5+ years of software engineering experience, with 2+ 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.

• Global Wellness Days: Enjoy two designated, company-wide paid wellness days off each year (typically the first Friday in March and the last Friday in September) so the entire global team can unplug, step away, and recharge together .
• Birthday Time-Off: Celebrate your day! Coupa provides a paid day off on your birthday or another day of your choice within your birthday month .
• Volunteer Time Off (VTO): Giving back is in our DNA. We offer 40 hours of paid VTO annually to support the community initiatives and volunteer programs you are passionate about .
• Employee Assistance Program (EAP): Access free, confidential, 24/7/365 counseling and resources for emotional support, work-life solutions, financial advice, legal guidance, and support for new parents .
• Business Travel Protection: Travel with peace of mind. Zurich Travel Assist provides medical, safety, pre-trip planning, and emergency support during any business travel .
• Referral Bonus Program: Share the Coupa experience! Receive generous monetary referral bonuses when you successfully refer talented friends or acquaintances who are hired into open roles .