Sagar M.-Graph-Based RAG Agent for Secure Data Intelligence (EcoGraph-RAG)
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Experience
Graph-Based RAG Agent for Secure Data Intelligence (EcoGraph-RAG)
Philipps University Marburg
- Designed GraphRAG system combining semantic vectors (Chroma) + knowledge graphs (NetworkX/Neo4j) for multi-hop Q&A on climate policy docs.
- Deployed Llama 3/Gemma via Ollama for $0-cost local inference; achieved ~95% entity-relation extraction accuracy.
- Built ingestion pipeline for PDFs + 48k-row CSVs; applied grouped median imputation and fixed data sparsity.
Twitter Sentiment Extraction with BERT + Explainability
- Fine-tuned BERT-base on 50k+ tweets for multi-class sentiment (85% F1); deployed via Hugging Face Transformers.
- Integrated LIME/SHAP to generate human-readable feature attributions; visualised in Streamlit for stakeholder review.
EV Insights ML API with Docker
- Deployed production-ready Flask API in Docker; predicted EV range with Random Forest.
- Built ETL pipeline; served real-time insights to the dashboard.
Research Assistant
Dayananda Sagar University
- Coordinated comparative analysis of algorithms (SVM, Logistic Regression, Random Forest) to optimise diagnosis; achieved model evaluation of 96.73% using SVM models on reference datasets.
- Applied Vgg16 transfer learning for feature extraction and optimised deep learning model performance on limited medical imaging data to distinguish between benign and malignant tumours.
- Assisted in synthesising research outcomes and contributed to manuscript drafting using LaTeX and Microsoft Office, supporting publication for ICRTC-2023.
- Engineered data pipelines using Python and TensorFlow over a 6-month project to automate preprocessing and augmentation of 10,000+ medical imaging records, reducing manual data handling by 70% and accelerating downstream model training cycles.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Education, Information Technology, Automotive, and Healthcare.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Research and Development, and Business Intelligence.
Summary
Master's student specialising in AI/ML with expertise in ML, RAG systems and LLM deployment. Proven track record developing production-ready AI solutions for threat detection and secure data intelligence applications.
Skills
Programming & Ml — Python (Advanced), Machine Learning (Pandas, Scikit-Learn), Ai Models (Rag, Langchain), Html, Css
Database & Devops — Sql, Postgresql, Docker, Git, Api
Soft Skills — Good Communication Skills, Independent Work, Problem Solving Skills, Self-Directed
Languages
Education
Philipps University Marburg
M.Sc. in Computer Science · Computer Science · Marburg, Germany
Dayananda Sagar University
B.Tech in Computer Science · Computer Science · India
Certifications & licenses
British Airways- Data Science Job Simulation
Forage
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Sagar is based in Marburg, Germany.
Sagar speaks the following languages: English (Advanced), German (Elementary).
Sagar has at least 3 years of experience. During this time, Sagar has worked in at least 4 different roles and for 2 different companies. The average length of individual experience is 1 year and 9 months. Note that Sagar may not have shared all experience and actually has more experience.
Based on recent experience, Sagar would be well-suited for roles such as: Graph-Based RAG Agent for Secure Data Intelligence (EcoGraph-RAG), Twitter Sentiment Extraction with BERT + Explainability, EV Insights ML API with Docker.
Sagar's most recent position is Graph-Based RAG Agent for Secure Data Intelligence (EcoGraph-RAG) at Philipps University Marburg.
In recent years, Sagar has worked for Philipps University Marburg and Dayananda Sagar University.
Sagar is most experienced in industries like Education, Automotive, and Information Technology. Sagar also has some experience in Healthcare.
Sagar is most experienced in business areas like Information Technology, Research and Development, and Business Intelligence.
Sagar holds a Master in Computer Science from Philipps University Marburg and a Bachelor in Computer Science from Dayananda Sagar University.
Sagar has 1 certificate: British Airways- Data Science Job Simulation.
The availability of Sagar needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
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The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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