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atul-X/README.md

Hi, I'm Atul Kumar 👋

Senior Backend Engineer · Fintech Infrastructure · Distributed Systems

Backend engineer with 6+ years building high-throughput fintech systems. Currently at FPL Technologies (OneCard & OneScore), working on platforms serving 8M+ monthly active users at ~50K requests/sec.

I care about clean architecture, resilient distributed systems, and infrastructure that stays fast under load.

🛠️ Tech

Java · Spring Boot · Microservices · Netflix Conductor / Temporal · PostgreSQL · Redis · Kafka · AWS

🚀 Selected work

  • DAG-based workflow orchestration platform (Netflix Conductor) for onboarding at scale
  • Bank-BFF — white-labeled partner portal integrating Federal Bank / SIB / CSB
  • Cut p99 latency ~66% (1s → 30ms) and AWS cost ~17% on core services
  • 🥇 First place — RBI Harbinger Hackathon

📫 Connect

LinkedIn

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  1. stock-portfolio-agent stock-portfolio-agent Public

    LangChain agent that fetches your stock portfolio, analyzes it with technicals + news sentiment, and delivers daily/intraday Telegram alerts + a web dashboard.

    Python 2

  2. calorie-bot calorie-bot Public

    Telegram bot that logs meals from photos, voice, or text, estimates calories and macros with GPT-4o, and tracks daily totals against BMR/TDEE goals.

    Python 1

  3. design-pattern design-pattern Public

    Design pattern implementations in Java, with high-level design (HLD) notes and practice problems.

    Java

  4. lld-problem lld-problem Public

    Low-level design (LLD) and machine-coding problems solved in Java.

    Java

  5. sentiment-pro sentiment-pro Public

    Flask web app for review sentiment analysis — scikit-learn (Naive Bayes) + NLTK, with bulk CSV/Excel upload and interactive charts.

    Python

  6. System-design System-design Public

    System design case studies and database deep-dives as Excalidraw diagrams — Cassandra, DynamoDB, Redis, news feed, Google Drive, and more.