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X-AVI-X/README.md

⚡ AVIJIT PAUL

Enterprise Full-Stack Engineer • Java (Spring Boot) & React / Next.js

Dhaka, Bangladesh • University of Dhaka (PMAIDE) • AIUB (B.Sc. in CSE)


Typing SVG

LinkedIn Enterprise Profile Email


Note

🏢 Enterprise Activity Notice for Technical Evaluators & Hiring Boards

Daily Production Engineering: As a full-time Full Stack Software Engineer at One Direction Companies Limited, my daily commits, code reviews, sprint deliveries, and microservice deployments occur within private organizational repositories under my corporate identity (@Avijit-ODCL) and enterprise GitLab.
Purpose of this Profile (@X-AVI-X): This public personal profile serves as a curated showcase of distributed microservices architecture, public technical reference projects, and research prototypes.


🌐 Architectural Profile & Engineering Philosophy

  ┌────────────────────────────────────────────────────────────────────────────────────────┐
  │                           AVIJIT PAUL — CORE SPECIFICATION                             │
  ├────────────────────────────────────────────────────────────────────────────────────────┤
  │  • Primary Discipline  : Distributed Microservices & Enterprise Full-Stack Systems     │
  │  • Backend Stack       : Java 17/21, Spring Boot 3, Spring Cloud, Spring Batch, JPA    │
  │  • Frontend Stack      : React.js, Next.js (App Router), TypeScript, Material Design   │
  │  • Database & Cache    : PostgreSQL, MySQL, Redis (Distributed In-Memory Store)        │
  │  • Infrastructure      : Docker, Docker Compose, Kubernetes, GitHub Actions CI/CD      │
  │  • Academic Track      : 4 Consecutive First Divisions | PMAIDE (University of Dhaka)  │
  │  • Code Provenance     : Clean Domain-Driven Design, ACID Transactions, Zero-Bloat DTOs│
  │  • Mentorship & Impact : High School Coding Tutor & STEM Educator in Bashundhara, Dhaka │
  └────────────────────────────────────────────────────────────────────────────────────────┘

🛠️ Technical Arsenal

Backend, Cloud & Distributed Infrastructure

Backend Skills

Frontend & UI/UX Engineering

Frontend Skills

Layer Technologies & Practical Execution
Backend & Microservices Java (17/21), Spring Boot 3, Spring Cloud (Eureka Service Discovery, Spring Cloud Gateway), Spring Security, Hibernate / Spring Data JPA, RESTful APIs, SOAP Web Services
Data & Cache Engineering PostgreSQL (Advanced Indexing, Query Tuning, Execution Plan Analysis), MySQL, Redis (Cache-Aside, Distributed Sessions), ACID Transactions
Frontend Architecture React.js, Next.js, TypeScript, Modern Component Architecture, Material Design Principles, Tailwind CSS, Responsive Web Design
DevOps & Delivery Pipeline Docker, Docker Compose containerization, Kubernetes fundamentals, Automated CI/CD (GitHub Actions), Linux Shell Scripting
Software Quality & Testing JUnit 5, Mockito, Automated Unit & Integration Testing, Test-Driven Development (TDD), Domain-Driven Design (DDD)

🚀 Flagship Enterprise Projects

  • Distributed platform composed of Eureka Service Registry (8761), Spring Cloud API Gateway (8084), and 7 independent domain services.
  • Features client-side load balancing, dynamic service discovery, distributed tracing with Zipkin, and isolated database schemas.
  • Fully containerized with production-grade docker-compose.yml and Alpine JDK 17 Dockerfiles.

Explore Architecture & Code →

  • Comprehensive healthcare financial backend orchestrating doctor consultations, diagnostic tests, and pharmacy POS dispensing.
  • Implements Spring Data JPA Projections (OrgMedicineProjection, DiagnosticBillProjection) eliminating query bloat and N+1 overhead.
  • Granular Role-Based Access Control (RBAC) and ledger reconciliation ensuring ACID transaction compliance.

Explore Architecture & Code →

  • Production-grade RESTful API featuring stateless JWT Authentication with custom JwtAuthFilter pipeline.
  • Method-level role authorization (ROLE_ADMIN, ROLE_CUSTOMER) and transactional reservation queuing.
  • Centralized Global Exception Handling (@ControllerAdvice) and ModelMapper DTO isolation.

Explore Architecture & Code →

🏛️ Enterprise Land Management Platform

  • Core full-stack modules engineered for 100+ active enterprise users spanning property acquisition, legal vetting, and audit verification.
  • Engineered asynchronous batch processing routines for high-volume bulk file uploads and automated monthly PDF/Excel reporting.
  • Developed 25+ reusable Next.js components following Material Design, cutting form development time by 40%.

Commercial Enterprise Implementation


👨‍🏫 Mentorship, Pedagogy & Community Impact

Beyond commercial engineering, I am passionate about mentoring and inspiring the next generation of technologists:

  • Coding Tutor & High School STEM Mentor (Bashundhara R/A, Dhaka):
    • Actively tutoring and coaching high school students in fundamental computer science, computational problem-solving, and algorithmic programming.
    • Guiding students in building practical software projects, mastering object-oriented programming (OOP), and preparing for National High School Programming Contests (NHSPC) and ICT Olympiads.
  • University Leadership & Technical Coordination (AIUB Computer Club - ACC):
    • Co-organized and coordinated major university tech symposiums, including CS Fest and Cyber Gaming Fest.
    • Champion — Senior ICT Olympiad (JARVIS), AIUB (2023).

📊 Professional Development & Streak Metrics

GitHub Streak


🎓 Academic Honors & Continuous Rigor

  • Professional Master’s in Artificial Intelligence & Data Engineering (PMAIDE)
    University of Dhaka (Department of Computer Science & Engineering) • Ongoing (Enrolled 2026)
  • Bachelor of Science in Computer Science & Engineering (B.Sc. in CSE)
    American International University-Bangladesh (AIUB) • CGPA 3.64 / 4.00 • First Class with Distinction
  • Higher Secondary Certificate (HSC) — Science
    Nilphamari Govt. College • GPA 4.17 / 5.00 • First Division
  • Secondary School Certificate (SSC) — Science
    Nilphamari Govt. High School • GPA 4.88 / 5.00 • First Division
  • Academic Milestone: Unblemished track record of four consecutive First Classes/Divisions.

🤝 Let's Connect & Collaborate

Open for high-impact enterprise engineering opportunities.

LinkedIn Profile • Corporate GitHub (@Avijit-ODCL) • Email: avijit.paul.cs@gmail.com

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  1. Online-Book-Library Online-Book-Library Public

    Full-featured Book Management & Lending REST API built with Java Spring Boot, Spring Security (JWT), PostgreSQL/MySQL, JPA/Hibernate, and Gradle.

    Java 1

  2. Personalized-Health-Management-System-Microservice Personalized-Health-Management-System-Microservice Public

    Enterprise Health Management Microservices platform built with Java (Spring Boot), Spring Cloud (Eureka Service Registry), PostgreSQL, Redis caching, and Docker Compose.

    Java 1

  3. Advance-Programming-with-ASP.NET Advance-Programming-with-ASP.NET Public

    ID: 18-37556-1

    JavaScript

  4. Bomberman Bomberman Public

    Game

    HTML

  5. Billing-System-For-Hospitals-Backend Billing-System-For-Hospitals-Backend Public

    Hospital Billing & Invoicing Backend engine built with Java Spring Boot, JPA/Hibernate, relational database schema, and automated financial transaction processing.

    Java

  6. Teacher-s-Student-and-Class-Management-System Teacher-s-Student-and-Class-Management-System Public

    This is a desktop application developed by C# with dotnet on Microsoft Visual Studio.

    C#