About

Healthcare AI · Clinical NLP · Foundation Models · Agentic & Efficient ML

I build trustworthy AI for healthcare and science: conversational agents, clinical NLP, evaluation & safety, and foundation models — with interests in efficient ML and large‑scale data.

Ratneshwaran Maheswaran holding the Vice-Chancellor's Medal certificate and medal at the University of Nottingham

What I Do

Tech Stack

Languages

Python, SQL, C/C++, Java, MATLAB

ML & Data

PyTorch, TensorFlow, scikit-learn, NumPy, Pandas, Scanpy, scvi-tools, UMAP

Web & Tools

FastAPI, Docker, PostgreSQL, Node.js, React, LangGraph, LangChain, LangSmith, CUDA

Evaluation & Safety

Robustness, fairness, reproducibility; evaluation pipelines and safety tooling

Featured Projects

Zero-Shot Cell Annotation

Built zero-shot classification pipelines with foundation models (such as Geneformer and LangCell) for healthcare datasets.

Experience

UCL Centre for Artificial Intelligence – Agentic AI Researcher

October 2025 - Present (in collaboration with Freedom from Torture)

  • Prototyping multilingual mental‑health conversational agents using LLMs and agentic AI frameworks (LangGraph, CrewAI).
  • Partnering with Freedom from Torture to ensure trauma‑informed, culturally sensitive design and deployment.
  • Collaborating with clinical researchers to embed evidence‑based therapeutic strategies into AI systems.
  • Developing synthetic clinician‑patient dialogue datasets for training and evaluation.
  • Architecting safe, interpretable agentic workflows for reasoning and planning in sensitive contexts.
  • Integrating and testing LLM services (ChatGPT, Claude, Llama, Groq, AWS Bedrock) within cloud pipelines.

Secrier Lab, UCL Genetics Institute – AI & Genomics Researcher

March - September 2025

  • Built scalable ML pipelines (PyTorch, scvi-tools, Scanpy) analysing millions of single‑cell RNA‑seq datapoints across cancer types.
  • Benchmarked foundation models (scBERT, scGPT, Geneformer, LangCell) for classification and state prediction with strong Accuracy, F1, AUROC, AUPRC.
  • Developed zero‑shot annotation techniques and improved cross‑dataset generalisation under batch effects using UMAP.
  • Produced actionable insights with a reproducible framework; pre‑print planned for 2026.

Open-Source Assistive Devices (OPAD) - President

University of Nottingham, 2022 - 2024

  • Directed student-led projects building assistive and medical devices across hardware, software, and analytics.
  • Applied ML to improve device performance and automate data collection aligned to NHS needs.
  • Secured funding and coordinated cross-disciplinary engineering teams.

40seconds.org - Founder and CEO

Non-profit, 2020 - Present

  • Founded a global non-profit promoting mental health awareness and human rights for youth.
  • Led initiatives including articles, research, and volunteer programs across 19 countries.
  • Raised funds for Covid-19 relief and sustained operations with a student-led team.

Honours

CV & Highlights

Education

  • University College London (UCL) – MSc Artificial Intelligence for Biomedicine and Healthcare (2024 - Present)
  • The University of Nottingham – BEng (Hons) Electronic and Computer Engineering (2021 - 2024)

Highlights

  • Healthcare AI: clinical NLP, conversational agents, evaluation & safety
  • Foundation models and agentic/efficient ML for large‑scale data
  • Experience: PyTorch, TensorFlow, Scanpy, scvi-tools, FastAPI, React, LangGraph/LangChain
  • Open-source contributor; reproducible workflows and benchmarking

Open CV (PDF)

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