Summary
Overview
Work History
Education
Skills
Timeline
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MD AMIN

Holbrook,NY

Summary

Secret-cleared Senior Full Stack Java Developer (6+ years) delivering high-traffic federal systems. Sole owner of nationwide USPS customer portal (Vue 3 + Spring Boot 3 + AWS GovCloud). 40–60% performance gains via migrations, caching, and secure microservices.

Overview

7
7
years of professional experience

Work History

Senior Full Stack Java Developer

United States Postal Service (ECS Federal, LLC)
11.2023 - Current
  • Sole developer owning nationwide USPS portal (Vue 3 , Pinia, TypeScript, Vite)
  • Led zero-downtime Vue 2 → Vue 3 migration – cut page load 40% (4.8s → 2.9s)
  • Built/secured Spring Boot 3.x microservices (OAuth2 + JWT, rate-limiting, audit logging)
  • Added Redis caching – reduced 7 slow reports from 12–15s to
  • Integrated Click-N-Ship, Address Validation, Tracking, Label, and Reporting APIs
  • Daily Agile collaboration with USPS product, security, and DevOps teams

Full Stack Java Developer

LTS Health
12.2022 - 10.2023
  • Led AngularJS → React 18 + TypeScript + React Query + TanStack Table rewrite
  • Designed/deployed 12 Spring Boot 3 microservices on EKS with Helm
  • Built zero-downtime GitLab CI/CD pipeline (tests, SAST, scanning)
  • Cut API response times 60% via query optimization and caching

Senior Full Stack Developer

Oracle
03.2021 - 11.2022
  • Primary frontend owner – global dashboard (Angular 14→16, Nx monorepo, 2,000+ daily users)
  • Reduced Spring Boot + Kafka latency 45% through optimization and caching
  • Implemented advanced RxJS and lazy-loaded modules

Full Stack Java Developer

IBM
06.2019 - 02.2021
  • Built customer portals in React 17 and early Vue 3 during modernization
  • Owned full OAuth2 + OpenID Connect flow with PKCE
  • Led Java 11 → 17 and Spring Boot 2 → 3 upgrade across 8 services

Education

B.Sc. - Computer Science

Bangladesh
01.2016

Skills

    Backend

    Java 17 / 21 Spring Boot 3x Spring Security Kafka Redis MySQL PostgreSQL REST GraphQL OAuth2/JWT/OpenID Connect PKCE

    Frontend

    Vue 3 (Composition API script setup) React 18 Angular 16–18 TypeScript Pinia Redux/RTK React Query TanStack Table Vite Nx Section 508 / WCAG 21 Accessibility

    DevOps & Cloud

    AWS GovCloud Docker Kubernetes Helm GitLab CI/CD

Timeline

Senior Full Stack Java Developer

United States Postal Service (ECS Federal, LLC)
11.2023 - Current

Full Stack Java Developer

LTS Health
12.2022 - 10.2023

Senior Full Stack Developer

Oracle
03.2021 - 11.2022

Full Stack Java Developer

IBM
06.2019 - 02.2021

B.Sc. - Computer Science

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