Rohit Raj

Senior Applied Scientist @ American Express | Predictive Modeling, Large Language Models

Role
Senior Applied Scientist at American Express
Location
Bengaluru, KA, IN
LinkedIn followers
500 followers

About Rohit Raj

With nearly a decade of experience in applied machine learning, I’ve built my career on the principle that data-driven insights can prevent accidents, save lives, and transform entire industries. My focus has always been on developing AI systems that bridge the gap between theoretical innovation and measurable business impact.As a Senior Applied Scientist, I’ve learned that the most powerful algorithms are worthless without understanding the human element behind every data point. My work sits at the intersection of cutting-edge technology and real-world problems, where theoretical models meet practical solutions that businesses actually need.My expertise spans the full AI spectrum—from computer vision and NLP to GenAI and LLMs. But what truly drives me is the challenge of making complex technology accessible. I believe in democratizing machine learning, creating solutions that empower teams regardless of their technical background.Leadership, for me, isn’t just about managing projects—it’s about cultivating environments where innovation thrives. I’ve had the privilege of mentoring emerging data scientists and leading cross-functional teams, always with the philosophy that the best breakthroughs happen when diverse perspectives collide.My technical toolkit spans Python, LangChain, PyTorch, TensorFlow, vLLM, and cloud platforms like GCP and AWS, with deep expertise in advanced ML techniques including mixed precision training, distributed training, and model fine-tuning. I’m particularly passionate about modern LLM optimization methods—from LoRA adaptations to RLHF implementations—always seeking ways to make powerful models more efficient and aligned with human needs.Whether building recommendation engines, implementing AutoML frameworks, or developing continual learning systems, my real strength lies in translating complex business challenges into scalable ML solutions that don’t just compute—they contribute.Currently fascinated by the evolving landscape of generative AI, Agentic coding, MCPs, and its potential to reshape how we interact with data. Always exploring new ways to bridge the gap between what’s possible and what’s practical.Open to conversations about AI innovation, technical leadership, or how machine learning can solve your organization’s most pressing challenges.

Experience

  1. Senior Applied Scientist

    American Express

    Aug 2024 — Present · Bengaluru, IN

Education

  • MIT Muzaffarpur

    B-Tech, Computer Science

    2011 — 2015

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Rohit Raj — Senior Applied Scientist at American Express in Bengaluru, KA, IN | Unifers