Subham Tiwari

Experience

1. Generative Ai Engineer

   PwC

   Feb 2025 — Present · Richardson, TX, US

   Engineered an advanced Retrieval-Augmented Generation (RAG) system leveraging LangChain on AWS, boosting information retrieval efficiency by 40% through optimized vector searches and seamless integration with Elasticsearch. • Developed a scalable architecture using AWS S3 for secure data storage and Elasticsearch for efficient indexing, ensuring real-time, context-aware responses based on dynamic user queries and document relevance.• Built and scaled cloud-native AI infrastructure using Docker containers and Kubernetes (AWS EKS), ensuring high availability with a 99.95% uptime SLA. • Implemented multi-region deployments and auto-scaling policies via AWS Auto Scaling groups to manage high-volume concurrent requests during peak usage periods, leveraging AWS Elastic Load Balancer (ELB) for optimal traffic distribution.• Deployed state-of-the-art LLMs (Llama 2 and GPT variants) fine-tuned on domain-specific healthcare and customer service data using LoRa for efficient parameter tuning. • Utilized AWS SageMaker for distributed training and optimized inference, incorporating AWS EC2 GPU instances to accelerate performance, achieving a 50% improvement in response relevance and minimizing latency for real-time processing.• Implemented automated LLMOps pipelines using Jenkins, AWS CodePipeline, AWS SageMaker, and MLflow for end-to-end experiment tracking, model versioning, and deployment. Employed MLflow for hyperparameter monitoring, model performance tracking, and maintaining a version control system, reducing manual intervention by 30% and ensuring continuous model updates and optimizations.• Deployed and managed models using Kubernetes (AWS EKS) and AWS API Gateway, establishing secure API management and access control for endpoint protection. Integrated OAuth 2.0, API keys, and encryption protocols (SSL/TLS and AWS KMS) for compliance with HIPAA regulations, while designing disaster recovery plans utilizing AWS Backup and multi-region deployment strategies.

Education

• Gandhi Institute of Technology and Management (GITAM)

  Bachelor of Technology - BTech, Computer Science

• Central Michigan University

  Masters in information system, Cyber/Computer Forensics and Counterterrorism

• St. Joseph's Secondary School

  I.C.S.E ( International council of secondary education ), ICSE

  2001 — 2010

• Narayana Junior College - India

  High School Diploma, Mathematics and Computer Science

Skills

• Public Speaking
• C++
• Html
• Management
• Linux Network Administration
• Networking
• Leadership
• Red Hat Linux
• Research
• Data Analysis
• Javase
• Java
• Kali Linux
• Powerpoint
• Microsoft Excel
• C
• Microsoft Office
• Windows
• Javascript
• R
• Sql
• Linux
• Red Hat
• Microsoft Word
• Project Management
• Customer Service