
Mark A
AI LLM Engineer
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Experiencia laboral
AI / LLM Engineer
Ineffable Interiors • Tiempo completo
Feb 2025 - Oct 2025 • 8 mos
Designed LLM-powered applications combining retrieval, embeddings, structured generation, and backend services. Architected RAG workflows for enterprise knowledge discovery, including ingestion, chunking, retrieval, reranking, context construction, and grounded generation. Reduced fine-tuning GPU memory consumption by approximately 60% using QLoRA, allowing larger models to be trainedonthe available GPU infrastructure. Developed evaluation workflows for answer quality, retrieval relevance, latency, reliability, and model cost.
AI Engineer
Dynamo • Freelance
Apr 2021 - Nov 2022 • 1 yr 7 mos
Developed Transformer-based NLP systems for document classification, information extraction, semantic similarity, andquestion answering. Fine-tuned BERT and other Transformer models on domain-specific datasets. Built automated benchmark pipelines for evaluating model quality across instruction following, reasoning, extraction, summarization, and domain-specific tasks Improved document classification F1 score from 82% to 93% through data augmentation, fine-tuning, and hyperparameter optimization.