sumaly

✦ Hello, I'm

Sumaly Bajracharya

Full-Stack Software Engineer & AI/ML Enthusiast

Passionate about building scalable end-to-end web applications with Node.js, Nest.js, React, MongoDB, GraphQL,TypeScript . 2+ years of full-stack experience, advancing in Machine Learning & AI.

Technical Skills

Languages

JavaScript
TypeScript
Python
C++

Backend & APIs

Node.js
NestJS
Express.js
GraphQL

Frontend

React
Redux
HTML5
CSS3

Databases

MongoDB
SQL Server

Cloud & DevOps

AWS
Docker

AI & ML

TensorFlow
PyTorch
RAG
LLMs

Tools

Postman
Swagger
Apollo Studio

my journey

Work Experience

Software Engineer (Full-stack)

EB Pearls Pvt. Ltd.

Nov 2022 – Jul 2024 Sydney, Australia (remote)
  • Developed and delivered production-ready web applications, making architectural decisions on data modeling and API structure by collaborating with cross-functional teams.
  • Designed and implemented robust RESTful and GraphQL APIs with React and Redux frontend.
  • Improved application performance using database indexing, aggregation pipelines, and query optimizations.
  • Implemented role-based access control (RBAC) and authentication workflows to secure access division across various user levels.
  • Integrated Twilio (OTP/SMS), SendGrid, AWS SES for email, and AWS S3 for storage.
  • Enhanced code maintainability using TypeScript with centralized error handling.

Software Engineer Trainee

EB Pearls Pvt. Ltd.

Apr 2022 – Oct 2022 Sydney, Australia (remote)
  • Implemented node-cron scheduled jobs and Mongoose geo-spatial queries in a SAAS application.
  • Built responsive web applications and admin dashboards with MERN stack and NestJS with GraphQL.
  • Utilized Postman, Swagger, and Apollo Studio for API development and testing.

Publication

Uncertainty-Aware LLM-Guided Policy Shaping for Sparse-Reward Reinforcement Learning

✦ Accepted — IEEE CAI 2026

Proposed a calibrated reinforcement learning framework using a fine-tuned BERT model, Proximal Policy Optimization, Monte Carlo dropout, and A* based oracle in a custom UnlockPickup MiniGrid environment. Achieved 99.20% success rate, 2009.96 reward AUC, and reduced the average steps to goal from 35.52 to 8.56, outperforming baseline models and improving decision-making in sparse-reward environments.

View Paper

Leadership Experience

Entrepreneurial Lead

NSF I-Corps Hub Great Plains

Jan 2025 - Feb 2025 & Jun 2025 – Jul 2025 North Dakota, USA (remote)
  • Led 3-member teams in two cohorts to explore AI-driven tools in music and legal domains.
  • Conducted 40+ customer interviews applying lean startup and customer segmentation techniques.
  • Collaborated with technical and business mentors on ecosystem modeling and value propositions.

✦ things I've built

Featured Projects

AI, Machine Learning & Full-Stack Development

Hackathon, 2nd Place - USD Ignite

PlanMyPlate — AI Meal Planning App

Apr 2026

Developed a multi-agent AI meal planning system powered by Anthropic’s Claude API, delivering personalized weekly meal plans, macro-optimized grocery lists, and cooking schedules tailored to user body composition, dietary preferences, and budget. Built and deployed a full-stack solution with a FastAPI backend and React/TypeScript frontend within a 48-hour sprint.
View Code
PythonReactFastAPITypeScriptClaude API
Machine Learning & AI

RAG-Based E-Commerce Price Prediction System

Aug 2025 – Dec 2025

Developed a prediction system to estimate expected customer ratings (regression) and launch risk level (classification) for Amazon datasets. Compared Random Forest, Linear/Logistic Regression, XGBoost, and LightGBM. Used SHAP to interpret how different factors impact a product's success.
View Code
Machine LearningExplainable AI (SHAP)Predictive AnalysisFeature Engineering
Information Storage & Retrieval

Protein Chatbot with FAISS & LLM

Aug 2025 – Dec 2025

RAG-based web application with Sentence Transformer and FAISS for semantic search, powered by Llama3.2 for accurate protein information.
View Code
RAGNLPFAISSPythonDocker
Distributed System

Federated Learning in Distributed Systems

Jan 2025 - May 2025

Performed a comparative analysis of federated learning algorithms (FedAvg, FedProx, Cyclic Weight Transfer, Differential Privacy) in a distributed systems environment using the MNIST dataset.
View Code
Federated LearningPythonPyTorch
Computer Vision

Comparative Analysis of Object Detection Models in Autonomous Driving

Sept 2024 - Dec 2024

Pre-processed the KITTI dataset and analyzed the trade-offs between YOLOv5 and Faster RCNN for speed vs accuracy. Optimized the loss function with classification loss, bounding box regression, and objectness loss.
View Code
Computer VisionDeep LearningPyTorchTensorFlowPython
Machine Learning

Dental Caries Segmentation for Panoramic X-ray Images

Sept 2024 - Dec 2024

CNN-based model for automated caries detection in panoramic X-rays, creating clinical decision support tools. Segmented dental caries using U-Net architecture with ResNet34 encoder for 233 panoramic X-ray images.
View Code
Medical Image AnalysisComputer VisionTensorFlowPythonDeep Learning