backend developer · Dhaka, Bangladesh

Hi, I'm Rifat Hossain

I build fast, reliable backend systems — clean APIs, scalable microservices, and code that holds up in production.

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About me

Aspiring Java developer passionate about building clean, efficient, and scalable backend systems using Spring Framework and Spring Boot.

A problem solver at heart with 700+ problems solved across Codeforces, LeetCode, VJudge, HackerRank, and other platforms — sharpening algorithmic thinking and coding precision.

Constantly exploring new technologies, I'm driven by creating impactful applications from the ground up and delivering code that truly makes a difference.

Projects

Years exp.

3.89

CGPA

Java Dev

Work experience

Junior Software Engineer

current

TechnoNext Software Ltd.

Engineered the backend for a stock market analysis application using Spring Boot, delivering robust RESTful APIs to process market data.
Model and query complex data with PostgreSQL DB; implement event-driven communication via Apache Kafka.
Automated daily data extraction by developing custom Web Scrapers integrated with Spring Schedulers.
Follow rigorous Git/GitHub workflow — branching, pull requests, and code reviews — in an Agile team.

Mar 2026 — Present

Nov 2025 — Feb 2026

Database Administrator Intern

TechnoNext Software Ltd.

Executed complex SQL queries for data retrieval, verification, and performance analysis across PostgreSQL databases.
Configured secure remote connections, assisted in replication and version upgrades, and automated backups.

Mar 2026 — Present

Junior Software Engineer

current

TechnoNext Software Ltd.

Engineered the backend for a stock market analysis application using Spring Boot, delivering robust RESTful APIs to process market data.
Model and query complex data with PostgreSQL DB; implement event-driven communication via Apache Kafka.
Automated daily data extraction by developing custom Web Scrapers integrated with Spring Schedulers.
Follow rigorous Git/GitHub workflow — branching, pull requests, and code reviews — in an Agile team.

Nov 2025 — Feb 2026

Database Administrator Intern

TechnoNext Software Ltd.

Executed complex SQL queries for data retrieval, verification, and performance analysis across PostgreSQL databases.
Configured secure remote connections, assisted in replication and version upgrades, and automated backups.

Featured projects

MicroBondhu — Digital Microfinance

Full-stack digital microfinance management system. JWT auth, role-based access (Admin/Field Officer/Member), digital loan lifecycle with on-site image verification, automated installment schedules, Recharts analytics dashboards, and PDF report generation.

Java 17Spring Boot 3PostgreSQLReactDocker

View Project

Real-Time Chat Application

Multi-user chatroom enabling instant message exchange via WebSocket (STOMP over SockJS) with an auto-updating, no-reload UI.

Spring Boot 3WebSocketSTOMPBootstrapMaven

View Project

Emras — Microservice E-Commerce

Distributed e-commerce backend using Spring Cloud (Gateway, Eureka). Async event-driven communication with Apache Kafka and the Outbox pattern.

Java 21Spring Boot 3KafkaReact 18Docker

View Project

Explore more on GitHub →

Skills & technologies

Click any skill for an AI-powered explanation.

⚙️ Backend & Architecture

📡 Messaging & Eventing

🗄️ Databases

🛠️ DevOps & Tools

💻 Languages

Education

BSc in Computer Science & Engineering

IUBAT, Dhaka

2022 — 2025

CGPA: 3.89 / 4.00. Core CS: data structures, algorithms, database systems, software engineering, operating systems.

HSC (Higher Secondary Certificate)

BAF Shaheen College, Paharkanchanpur

2018 — 2020

Completed higher secondary education with a focus on science.

Certifications

✓

Java Spring Boot & REST API

ICT Division, Bangladesh · 2024

✓

Python Workshop

BASIS Students Forum, IUBAT · 2025

Publications

Peer-reviewed papers and research I've contributed to.

Conferences

ICECTE 20262026

Bangla Semantic Analysis Using a Transformer-Based BanglaBERT Model

Presented at the 5th International Conference on Electrical, Computer & Telecommunication Engineering (ICECTE). Explores Bangla semantic analysis leveraging a transformer-based BanglaBERT model — published in IEEE Xplore (DOI: 10.1109/ICECTE69292.2026.11429239).

Read paper →

Journals

Journal articles coming soon.

My blog

Deep-dives on Java, Spring Boot, Redis, and backend architecture.

Spring BootPostgreSQLRace Condition

Race Conditions in E-Commerce: How I Discovered a Silent Bug That Could Cost Me Money

While building the backend for my e-commerce project, a thought suddenly crossed my mind: What happens if there is only one promo code usage left and two users try to use it at exactly the same time? That led me to race conditions. What made it dangerous? No exception. No obvious error. Just incorrect data and potential financial loss. In my latest Hashnode article, I discuss: • How the race condition happens • Optimistic vs. pessimistic locking • Why I chose pessimistic locking for promo codes • How atomic SQL operations can safely handle stock deduction • Lessons I learned about concurrency and database transactions

Aug 12, 2026

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RedisSpring BootCaching

Supercharging Spring Boot with Redis: Caching, Pub/Sub, Rate Limiting & More

From ~500ms PostgreSQL queries to ~1ms Redis hits — a complete hands-on guide. If you've ever watched your API response times crawl under load and thought "there must be a better way" — Redis is that better way. In this post, I'll walk you through a production-ready Spring Boot project I built to explore everything Redis can do: declarative caching, raw data structures, Pub/Sub messaging, rate limiting, and session management. By the end, you'll understand not just how to wire Redis into Spring Boot, but why each piece works — and what traps to avoid along the way.

Jul 28, 2026

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All articles on Hashnode →