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Jonathan Miranda

@jonathanmiranda

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Senior AI/ML engineer specializing in production-scale LLM and speech systems.

United States

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What I'm looking for

I seek impactful roles building production-grade LLM, speech, or multimodal systems with strong engineering teams, clear MLOps practices, and opportunities to mentor engineers and drive deployment to scale.

I am a Senior AI/ML engineer with an MSc in Computer Science and over eight years building production-scale deep learning solutions across LLM applications, speech processing, and computer vision. I have architected RAG-based systems, conversational AI platforms, and multimodal solutions using state-of-the-art models (GPT, Claude, LLaMA, Whisper) and delivered measurable business impact.

I bring deep expertise in PyTorch and TensorFlow, strong MLOps capabilities across AWS, Azure, and GCP, and proven leadership mentoring engineering teams and establishing robust deployment pipelines. Notable achievements include leading RAG risk-assessment systems, fine-tuning Whisper for a 2.6% WER ASR, and building multimodal Azure OpenAI solutions achieving 92% structured-data extraction accuracy.

Experience

Work history, roles, and key accomplishments

Senior LLM Engineer

HatchWorks AI

May 2023 - Aug 2025 (2 years 3 months)

Led development of RAG-based risk assessment and task generation systems using LLaMA 3.2 and Pinecone, built conversational AI integrations via Claude 3.5 Sonnet on AWS Bedrock, and delivered multimodal GPT-4o vision solutions achieving 92% structured data extraction and 70% faster processing.

LLaMA Pinecone GPT 4o MLFlow Docker Kubernetes

Senior ML Engineer

Biz4Group

Sep 2021 - May 2023 (1 year 8 months)

Led ASR engineering by fine-tuning Whisper-large-v2 on a 3,000-hour corpus to achieve 2.6% WER, adapted models for clinical transcription, and developed speech enhancement and VAD systems with 92.5% F1-Score.

Whisper LLaMA GAGNet PyTorch TensorFlow

AI Software Engineer

Biz4Group

Jan 2019 - Aug 2021 (2 years 7 months)

Developed and deployed multiple deep learning systems (speaker verification, age/gender recognition, speech recognition, emotion recognition, liveness detection) using PyTorch and TensorFlow for production.

PyTorch TensorFlow Speech Recognition Speaker Verification Liveness Detection

Computer Vision Engineer

Omron Robotics

Jan 2017 - Jan 2020 (3 years)

Designed and deployed industrial inspection and pick-and-place vision systems for manufacturing quality control, improving detection accuracy and production efficiency across multiple inspection products.

Computer Vision Object Detection Raspberry Pi Industrial Automation