~/portfolio — v3.0loc: Dhaka, Bangladeshsys.time: 2026

Available on 2 months notice

Md. Rabiul
Islam Santo

$▌

Java Full Stack Engineer with 2+ years of hands-on experience building secure, scalable enterprise applications — Java, Spring Boot, and PostgreSQL on the backend, Angular and TypeScript on the frontend. Focused on clean architecture, test-driven development, and high-availability systems.

Download CVGet in touch

GitHub LinkedIn HackerRank

Java Full Stack Engineer

$▌

30%

Faster API response

Query & caching optimization at BRAC IT

95%

Test coverage

TDD across enterprise modules

99.8%

Platform uptime

CI/CD on production systems

10K+

Users served

Enterprise-grade applications

Java//
Spring Boot//
Groovy//
Grails//
REST APIs//
Microservices//
Secure Coding//
JWT Authentication//
Authorization//
RBAC//
Data Protection//
PostgreSQL//
MySQL//
Redis//
Kafka//
RabbitMQ//
JUnit//
Mockito//
TDD//
SonarQube//
Agile/Scrum//
Clean Architecture//
SOLID Principles//
Git/GitLab//
Maven//
Gradle//
Jenkins//
Docker//
Kubernetes//
AWS//
Angular//
TypeScript//
React//
Next.js//
Vaadin//
PrimeNG//

Java//
Spring Boot//
Groovy//
Grails//
REST APIs//
Microservices//
Secure Coding//
JWT Authentication//
Authorization//
RBAC//
Data Protection//
PostgreSQL//
MySQL//
Redis//
Kafka//
RabbitMQ//
JUnit//
Mockito//
TDD//
SonarQube//
Agile/Scrum//
Clean Architecture//
SOLID Principles//
Git/GitLab//
Maven//
Gradle//
Jenkins//
Docker//
Kubernetes//
AWS//
Angular//
TypeScript//
React//
Next.js//
Vaadin//
PrimeNG//

Experience

/* 01 */

Building enterprise systems that scale, from database to UI — with measurable impact.

Apr 2024 — Present

2 yrs 2 mos

Dhaka, Bangladesh

Software EngineerCurrent

BRAC IT Services Ltd

>Engineered scalable backend services with Java, Spring Boot, Groovy, and Grails for enterprise applications serving 10K+ users
>Built full-stack features with Spring Boot, Angular, and Vaadin — including the 360-Degree Feedback module (EPMS), improving evaluation workflow speed by 40%
>Optimized RESTful APIs and database queries, reducing average response time by 30% across high-usage modules
>Designed interactive analytics dashboards with ApexCharts, increasing platform adoption by 52%
>Strengthened application security with authentication, authorization, and role-based access control for sensitive data workflows
>Applied clean architecture, SOLID principles, and TDD — achieving 95% automated test coverage
>Streamlined CI/CD workflows with Git, GitLab, Maven, and Jenkins, sustaining 99.8% platform uptime

Java
Spring Boot
Groovy
Grails
Angular
TypeScript
PostgreSQL
Redis
Docker
GitLab
Jenkins

Selected Projects

/* 02 */

From fintech platforms to encrypted messaging — systems built for correctness under load. Open any card for the full case study.

Fintech Payment Platform

NexusPay

Full-stack fintech platform supporting digital wallets, concurrent peer-to-peer transactions, and a real-time analytics dashboard with ACID-compliant operations.

>Eliminated transfer deadlocks via database locking and API idempotency
>Event-driven architecture with Kafka decoupling notifications & analytics
>Fault tolerance with Resilience4j rate limiting
>React/Next.js analytics dashboard over a JWT-secured API

Java · Spring Boot · PostgreSQL · Redis · Kafka · React · Next.js · Docker

Case studyGitHub

Employee Performance System

360-Assessment

Enterprise EPMS module processing multi-source feedback for 500+ employees with real-time analytics and role-based access control.

>40% faster reporting through optimized data retrieval
>Secure analytics aggregation and reporting pipelines
>Interactive real-time dashboards
>Multi-dimensional rating workflows

Spring Boot · Angular · JHipster · PrimeNG · PostgreSQL

Case studyGitHub Live demo

Secure P2P Encrypted Messaging

EnDecTic

Peer-to-peer communication platform with RSA 2048-bit encryption and a zero-knowledge architecture.

>2048-bit RSA end-to-end encryption
>Zero-knowledge message design
>Digital signature verification
>~50ms message latency

Java · Socket Programming · RSA Encryption · Swing

Case studyGitHub

Hostel Management System

Massier

Web system automating hostel and mess operations for 200+ residents with real-time expense tracking and messaging.

>70% operational efficiency gain
>Real-time expense tracking
>85% reduction in communication overhead
>Automated meal and expense reporting

PHP · MySQL · JavaScript · AJAX · Bootstrap

Case studyGitHub Live demo

Technical Expertise

/* 03 */

The toolset behind secure, high-availability systems — from API to interface. Meters reflect self-assessed depth.

// 01

Backend Development

Java0%

Spring Boot0%

Groovy0%

Grails0%

REST APIs0%

Microservices0%

// 02

Security & Reliability

Secure Coding0%

JWT Authentication0%

Authorization0%

RBAC0%

Data Protection0%

// 03

Data & Messaging

PostgreSQL0%

MySQL0%

Redis0%

Kafka0%

RabbitMQ0%

// 04

Quality & Methods

JUnit0%

Mockito0%

TDD0%

SonarQube0%

Agile/Scrum0%

Clean Architecture0%

SOLID Principles0%

// 05

DevOps & Cloud

Git/GitLab0%

Maven0%

Gradle0%

Jenkins0%

Docker0%

Kubernetes0%

AWS0%

// 06

Frontend Development

Angular0%

TypeScript0%

React0%

Next.js0%

Vaadin0%

PrimeNG0%

Education & Honors

/* 04 */

Education

2020 — 2025

B.Sc. in Software Engineering

Noakhali Science and Technology University

Noakhali, Bangladesh · CGPA 3.45 / 4.00

Achievements & Awards

Champion — BUET CSE Fest CTF
BUET
Oct 2024
9th Place — CTFBD Maze in Antarjal
ICT Division
Jun 2023
Best Campus Leader — Banglalink AppLink
Banglalink
Nov 2022

Md. RabiulIslam Santo