Abhijith Sai Thirunahari-AI and AWS Developer
Check rate
Experience
AI and AWS Developer
FannieMae
- Architected end-to-end credit risk pipelines by orchestrating Airflow ETLs and training LSTMs/Transformers to predict default and prepayment speeds on MBS portfolios.
- Developed Deep Learning NLP solutions using BERT and LayoutLM for document processing, leveraging Transfer Learning and custom PyTorch loss functions to automate underwriting.
- Optimized R&D lifecycles through Bayesian tuning, Batch Normalization, and MLflow tracking to ensure robust model performance throughout volatile mortgage market cycles.
- Productionized scalable MLOps infrastructure via Docker and INT8 Quantization, deploying low-latency FastAPI microservices on AWS SageMaker with automated CI/CD pipelines.
- Ensured regulatory compliance by integrating SHAP/LIME for explainability and establishing real-time Data Drift monitoring to meet strict FHFA and Fair Lending standards.
Java and AWS Developer
The College Board
- Directed the large-scale migration of customer marketing data from legacy Epsilon systems to Salesforce Marketing Cloud, ensuring data stayed accurate using Java and AWS.
- Developed and managed 15 automated data pipelines using AWS Glue and EMR to extract and move high volumes of data from Oracle database to the SFMC cloud.
- Built backend integration services using Java to link internal company databases with modern cloud platforms, improving overall system coordination.
- Simplified server management by using AWS Lambda and CloudFormation (CFT) to automate repetitive data tasks and reduce manual maintenance.
- Utilized AWS Athena to run fast queries on the massive dataframes stores in cloud, to monitor data quality in real-time.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Banking and Finance and Education.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Finance, Research and Development, and Business Intelligence.
Summary
AI Engineer with over 5+ years of experience delivering high-performance machine learning models and cloud-native architectures. Currently pursuing a Master’s in Mathematics at TU Bergakademie Freiberg to combine rigorous analytical foundations with advanced computational modeling. I specialize in the full lifecycle of AI development, from deep neural architectures including transformers and CNNs to complex data analysis and agentic system orchestration.
I have experience of automating enterprise-level workflows and bridging the gap between theoretical research and production-ready solutions.
Skills
- Programming Languages: Python, Java, C++, Sql, R
- Machine Learning: Sci-Kit Learn, Tensorflow, Keras, Pytorch, Fast.Ai, Jax
- Mathematical Frameworks: Petsc4py, Scikit-Fem, Neuralpde.Jl
- Parallel Computing: Openmp, Mpi, Cuda C++, Gpu Parallelization, Distributed Computing
- Data Analytics: Pandas, Numpy, Dplyr, Tidr, Data.Table
- Big Data: Hadoop, Spark, Hive, Sqoop, Mapreduce
- Visualization: Matplotlib, Seaborn, Ggplot2, Tableau, D3.Js
- Large Language Models: Multi-Agent Orchestration, Rag, Prompt Engineering, Semantic Search, Low-Rank Adaptation, Semi Supervised Learning
- Generative Ai & Deep Learning: Transformers (Vision, Music, Diffusion, Attention Mechanism), State Space Models, Variational Encoders, Pinns, Model Pruning, Quantization
- Cloud Computing: Aws, Docker, Microsoft Azure, Gcp, Kubernetes
- Agentic Ai: Hypothesis Testing, Bayesian Inference, Regression Analysis, Time Series Analysis
Languages
Education
Technische Universität Bergakademie Freiberg
Masters in Mathematics in Data and Resource Sciences · Mathematics in Data and Resource Sciences · Freiberg, Germany
Marist College
Masters in Information System Management · Information System Management · Poughkeepsie, United States
SR Engineering College
Bachelors in Electronics and Communication Engineering · Electronics and Communication Engineering · Warangal, India
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Abhijith Sai is based in Freiberg, Germany and can operate in on-site, hybrid, and remote work models.
Abhijith Sai speaks the following languages: English (Advanced), German (Intermediate).
Abhijith Sai has at least 6 years of experience. During this time, Abhijith Sai has worked in at least 2 different roles and for 2 different companies. The average length of individual experience is 3 years and 10 months. Note that Abhijith Sai may not have shared all experience and actually has more experience.
Based on recent experience, Abhijith Sai would be well-suited for roles such as: AI and AWS Developer, Java and AWS Developer.
Abhijith Sai's most recent position is AI and AWS Developer at FannieMae.
In recent years, Abhijith Sai has worked for FannieMae.
Abhijith Sai is most experienced in industries like Banking and Finance and Education.
Abhijith Sai is most experienced in business areas like Information Technology, Finance, and Research and Development. Abhijith Sai also has some experience in Business Intelligence.
Abhijith Sai has recently worked in industries like Banking and Finance.
Abhijith Sai has recently worked in business areas like Finance, Information Technology, and Research and Development.
Abhijith Sai holds a Master in Mathematics in Data and Resource Sciences from Technische Universität Bergakademie Freiberg, a Master in Information System Management from Marist College and a Bachelor in Electronics and Communication Engineering from SR Engineering College.
The availability of Abhijith Sai 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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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