alex.rivera@example.com·github.com/alexrivera·Remote / Open to relocation
Summary
AI developer with 6+ years building and deploying machine learning systems, from research prototypes to production-grade services. Focused on LLM applications, retrieval-augmented generation, and scalable model infrastructure. Comfortable owning a problem end-to-end: data pipeline, training, evaluation, and deployment.
Experience
Senior AI Engineer — Nimbus Labs
2023 — Present
Built a RAG pipeline serving 50k+ daily queries, cutting hallucination rate by 40% via reranking and citation grounding.
Led migration of inference stack to a self-hosted vLLM cluster, reducing per-request cost by 35%.
Mentored a team of 4 engineers on prompt evaluation and model monitoring practices.
Machine Learning Engineer — Fieldstone AI
2020 — 2023
Designed and shipped a fine-tuned classification model improving fraud detection recall by 22%.
Built internal tooling for dataset versioning and experiment tracking, adopted across 3 teams.
Software Engineer — Kestrel Systems
2018 — 2020
Developed backend services in Python and Go supporting real-time data ingestion at scale.