Open to opportunities

Vantari Balaji

@vantaribalaji

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AI Developer specializing in LLM integration, RAG systems, and production-ready AI agent solutions.

India

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What I'm looking for

I seek roles building production LLM applications, RAG pipelines, and AI agents within collaborative, product-focused teams that value scalability and observability.

I am an AI Developer with 3+ years building production-ready AI applications using Large Language Models, specializing in LLM API integration, AI Agent development, and RAG systems. I design FastAPI microservices, orchestrate autonomous LangChain agents, and deploy scalable solutions with monitoring and optimized inference.

My work includes fine-tuning LLMs with LoRA/QLoRA, achieving significant VRAM reductions, and building enterprise-grade retrieval pipelines with Chroma and Quadrant that reached 95% retrieval accuracy on hundreds of documents. I collaborate in agile teams to deliver low-latency, reliable AI features and continuously improve model performance through prompt engineering and observability.

Experience

Work history, roles, and key accomplishments

Current

NLP AI Engineer

Current

E42.ai

Feb 2023 - Present (2 years 10 months)

Architected and deployed production AI applications integrating local LLMs and OpenAI APIs into FastAPI microservices, built RAG systems with 95% retrieval accuracy on 500+ documents, and developed autonomous AI Agents that reduced manual effort by 60%.

fastAPI LLaMA Mistral Chroma LoRA QLoRA Vector Databases Prompt Engineering PyTorch

Machine Learning Engineer Intern

Refactor Academy

Nov 2022 - Feb 2023 (3 months)

Developed end-to-end ML pipelines using scikit-learn and PyTorch for classification, regression, and clustering, applied feature engineering and SMOTE for imbalanced data, and optimized models via GridSearchCV and Optuna.