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Learning something fun!
πŸ’­
Learning something fun!
  • Pune, India

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sejalsksagar/README.md

Hi, I'm Sejal πŸ‘‹

Software Engineer with 3+ years of experience building scalable Java backend systems at Northern Trust. I work primarily in Java 17+, Spring Boot, and distributed microservices β€” and I enjoy the intersection of solid backend engineering and applied AI.

"Someone has already solved your problems." β€” Head First Design Patterns


πŸ›  Tech Stack

Primary: Java 17+, Spring Boot, Spring Security, JPA/Hibernate, RESTful APIs, Microservices
Distributed Systems: Apache Kafka, Event-Driven Architecture, CQRS, Saga Pattern, DLQ
Databases: Oracle, PostgreSQL, MySQL, MongoDB
Cloud / DevOps: Azure, PCF, Docker, GitHub Actions, CI/CD
Testing: JUnit 5, Mockito, TDD, Integration Testing
Also worked with: Python, FastAPI, ReactJS, Redux


πŸ“Œ Featured Projects

IBM Hackathon 2026
Production-grade event-driven POS transaction processor using Java 17, Spring Boot, Apache Kafka, CQRS, Drools, MongoDB, and PostgreSQL. Handles real-time EMI generation, reward negotiation, saga-like timeout handling, and DLQ-based error recovery.
Java 17 Spring Boot Kafka CQRS MongoDB PostgreSQL Drools Docker


πŸ’° Finance AI

Full-stack personal finance analytics platform with a Spring Boot backend, JWT authentication, MySQL, and a Python/FastAPI AI engine for spending analysis and financial recommendations.
Java 17 Spring Boot Spring Security MySQL Python FastAPI React


Gridlock Hackathon 2.0 (Flipkart) β€” Round 2
Predicts event-driven traffic congestion and recommends manpower, barricading, and diversion plans before disruption peaks. LightGBM ML models trained on 8,173 Bengaluru traffic records; live Mappls map visualization and what-if simulation.
Python FastAPI LightGBM React TypeScript


πŸ€– CodeAtlas AI

Microsoft Build AI Hackathon 2026 β€” Top 25
LLM-powered repository understanding platform. Input a GitHub URL β†’ get tech stack detection, AI-generated architecture diagrams, module summaries, and engineering recommendations in under 60 seconds.
Python FastAPI GPT-5 (GitHub Models) Next.js React Flow


Meta PyTorch OpenEnv Hackathon 2026 β€” Finalist (Top 800 / 31,000+ teams)
Reinforcement learning environment where an AI agent acts as a Tech Lead managing 1–6 Agile sprints. Features a 3-layer reward system, Guard/Loop/Stall inference defense mechanisms, and benchmarks against rule-based and LLM baselines.
Python FastAPI Reinforcement Learning LightGBM React


πŸ† Highlights

  • Microsoft Build AI Hackathon 2026 β€” Top 25 (CodeAtlas)
  • Meta PyTorch OpenEnv Hackathon 2026 β€” Finalist, Top 800 / 31,000+ teams; selected for 48-hour AI hackathon in Bangalore
  • IBM Hackathon 2026 β€” POS EMI & Reward Negotiation System
  • Gridlock Hackathon 2.0 (Flipkart) β€” Round 2, GridMind
  • Microsoft Azure Fundamentals (AZ-900)
  • Citi Bridge Program 2022 β€” Selected trainee

πŸ“« Let's Connect

LinkedIn GitHub Kaggle Medium


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  1. finance-ai finance-ai Public

    AI-powered personal finance analytics platform built with React, Spring Boot, and FastAPI, providing intelligent spending insights, budgeting suggestions, and financial analytics.

  2. Cascade-Cup-20-Team-Aces Cascade-Cup-20-Team-Aces Public

    Round 2 and Round 3 solutions by our team for Cascade Cup 2020 Hackathon

    Jupyter Notebook 1

  3. ai-sprint-manager-openenv ai-sprint-manager-openenv Public

    RL environment where a fine-tuned Qwen2.5-1.5B LLM acts as Engineering Manager across agile sprints β€” single sprint (Round 1) and 60-day multi-sprint projects (Round 2). GRPO-trained with Unsloth +…

    Python

  4. pos-emi-reward-negotiation-system pos-emi-reward-negotiation-system Public

    AI-assisted understanding, testing, and maintenance of a Kafka-based POS EMI & reward negotiation system using CQRS, Drools, and distributed backend patterns.

    Java

  5. codeatlas-backend codeatlas-backend Public

    AI-powered FastAPI backend that analyzes GitHub repositories, detects tech stacks, generates architecture diagrams, and provides GPT-5-powered codebase insights.

    Python 1

  6. gridmind gridmind Public

    AI-powered traffic command center for predicting traffic disruption impact, spillover congestion, and resource requirements, with live Mappls visualization and what-if intervention simulation.

    TypeScript