Ajeya B Jois
Senior ML Scientist | Generative AI, RAG & LLM Agents | High-Scale ML Systems & MLOps | Ex-PayPal, Oracle, Qualcomm
- Role
- Senior Ml Scientist 3 at PayPal
- Location
- Bengaluru, KA, IN
- LinkedIn followers
- 500 followers
About Ajeya B Jois
Senior Machine Learning Scientist with 7 years of experience architecting high-scale, low-latency ML Systems & GenAI Solutions. Expert in bridging Classical ML (XGBoost, PySpark) with LLM Agents (RAG) to drive automationand decision intelligence. Proven track record of deploying production models processing millions of transactions/day, delivering $12M–$18M in annual business impact. Deep expertise in MLOps, Model Explainability, and System Design.Proficient Programming Languages: C/C++, Python, JavaScript, SQLTools: Applied Machine Learning, Applied Deep Learning, Data Analytics, Data Visualization, Applied Mathematics, Applied Statistics, Time Series Forecasting, Linear Algebra, Text Analytics, Natural Language Processing, LLM Fine Tuning, Generative AI, Data Structures and Algorithms, Regression Techniques, Classification Techniques, Clustering TechniquesTechnologies: Numpy, Pandas, SciPy, Scikit-learn, NLTK, Pyspark, Llama3, Mistral, Django, Flask
Experience
Senior Ml Scientist 3
Jan 2025 — Present · Bengaluru, IN
Architected a high-precision Fraud Detection Engine (XGBoost) for high-risksegments, achieving +30% recall lift and cutting chargeback losses by$12M–$18M/year-> Developed a GenAI RAG Assistant (LangChain/OpenAI) to query SQL DBs vianatural language, reducing ad-hoc requests by 65% and boosting analystvelocity 2.5x-> Engineered scalable PySpark pipelines processing millions oftransactions/day, reducing manual fraud investigation workload by ~20%through automated risk scoring-> Deployed Explainable AI (XAI) frameworks using SHAP to satisfy regulatoryaudits, increasing model transparency for risk stakeholders-> Established MLOps standards with MLflow and Airflow for real-time driftdetection, ensuring consistent performance across evolving fraud patterns
Education
Sri Aurobindo PU College Javalli
12th, PCMS
Sri Jayachamarajendra College of Engg., MYSORE
Bachelor of Engineering, None
2015 — 2019
Birla Institute of Technology and Science, Pilani
Master's degree, Data Science
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