Hello, I'mDelwar Hossain
Senior Software Engineer & Technical Lead
I build scalable web and mobile products from architecture to production, with 5+ years of experience across full-stack development, cloud infrastructure, system design, and technical leadership.
Senior Engineer
Architecture & Leadership
Cloud & DevOps
AWS • Docker • CI/CD
About Me
The story behind the code — how I work, what I build, and the problems I enjoy solving.
I'm Delwar Hossain, a senior software engineer & technical lead who turns complex product ideas into software people actually enjoy using. Over the past five years I've worked across healthcare, education, real estate and fintech — from the first database sketch all the way to production deployment.
My day-to-day sits at the intersection of clean architecture and shipping velocity: designing APIs that stay maintainable, building interfaces that feel fast, and setting up the cloud infrastructure that keeps everything running. I've also led teams of six to seven engineers, which taught me that clear communication ships more features than clever code ever will.
When I'm not building, you'll usually find me solving algorithm problems, exploring what's new in AI tooling, or writing about the lessons I pick up along the way.
5+
Years Experience
30+
Projects Delivered
7
Engineers Led
500+
Problems Solved
Full-Stack Web
React, Next.js & Node.js applications built for scale and speed.
Mobile Apps
Cross-platform Flutter apps shipped to the App Store and Play Store.
Cloud & DevOps
AWS infrastructure, Docker containers and automated CI/CD pipelines.
Team Leadership
Mentoring engineers, running code reviews and owning delivery.
GitHub Contributions
A real-time snapshot of my daily commits, activity streaks, and continuous development habits.
Activity Summary
Commit streak & open-source performance
Contribution Heatmap
1-Year Activity Timeline
What I Do Best
A breakdown of my technical stack, engineering skills, and full-stack expertise built over years of development.
JavaScript
Advanced proficiency in modern JavaScript, ES6+, TypeScript, and asynchronous programming with 5+ years of experience
Flutter
I have over 5+ years of hands-on experience building scalable, high-performance cross-platform applications using Flutter, from MVPs to production-ready apps.
React
Expert-level React development with hooks, context, performance optimization, and Next.js framework
Node.js
Backend development with Node.js, Express.js, RESTful API design, and microservices architecture
MongoDB
NoSQL database design, optimization, aggregation pipelines, and integration with Node.js applications
MySQL
Relational database design, query optimization, indexing strategies, and complex data relationships
AWS
Cloud architecture, EC2, S3, RDS, Lambda, CloudFront, Route 53, and scalable deployment strategies
Docker
Containerization, Docker Compose, microservices deployment, and container orchestration
Git
Version control, branching strategies, collaborative development workflows, and CI/CD integration
Video Streaming
VOD implementation, FFmpeg integration, CDN optimization, and real-time streaming solutions
API Integration
RESTful APIs, third-party integrations, payment gateways, and webhook implementations
PostgreSQL
Database
Featured Projects
Explore recent production-ready web applications, open-source utilities, and full-stack projects.
InnossistAI
AI-powered chatbot platform like ChatGPT specifically designed for websites. Instantly answers visitor questions with personalized responses trained on your content and human resources. Features intelligent content analysis, real-time customer support integration, and seamless website embedding capabilities.
Ambel
Comprehensive online practice management software with business management and intelligent tools. All-in-one solution for healthcare practices with advanced analytics, patient management, automated workflows, appointment scheduling, billing integration, and comprehensive reporting dashboard.
Retina LMS
Educational platform for Bangladesh's most popular medical admission coaching organization with video streaming services. Features course management, student tracking, payment integration, and live streaming capabilities across all divisional branches.
Achievements & Certifications
Recognized certifications, competitive programming achievements, and leadership milestones.
AWS Academy Graduate
AWS Academy Cloud Foundations Certification
Machine Learning Foundations
Coursera - A Case Study Approach
500+ Programming Problems
Solved across LeetCode, Codeforces & platforms
Team Leadership
Led software development teams of 6-7 members
Trusted by Ambitious Teams
Highlights from founders, engineering leads, and product managers I've collaborated with.
Product Manager · Beamly
“Working with Delwar was a turning point for our SaaS dashboard. He translated ambiguous requirements into a polished, accessible UI that our customers love.”
CTO · Northwind Labs
“From architecture to deployment, the attention to detail was outstanding. The handoff was clean, documented, and the project shipped ahead of schedule.”
Founder · Lumen Studio
“A rare combination of design sensibility and engineering expertise. Our conversion rate improved 32% after the redesign went live.”
Let's Build Together
Have a project in mind, looking for technical advice, or want to collaborate? Send me a message and let's get connected!