Full-Stack Engineering, Sharpened by AI.
Hello, I'm
Khandoker Shamimul Haque
Over 3 years, I've gone from writing my first component to being the main engineer behind a CRM SaaS — owning the architecture, the decisions, and the delivery. Along the way, I built the full frontend of an ecommerce platform serving 1000+ daily users, led the core features of a headless CMS, and contributed meaningfully to an HRM and a ticketing platform. I care about code that scales, interfaces that feel right, and work that actually ships.
Architect by craft. Full stack by choice.
ShippedSaaSCRMHRMTicketingEcommerceSaaS
About Me
The person behind the code
I'm a Ai driven full stack engineer based in Dhaka, Bangladesh, with 3+ years of experience building production-grade web applications. My core is frontend — architecture, component systems, performance — but I'm equally comfortable on the backend with Express, PostgreSQL, Prisma, and TypeScript. I grew from a junior dev into the main engineer behind a full CRM SaaS front end part, owning the stack from UI to API.
3+
Years of Experience
10+
Products Shipped
24/7
Learning Mindset
2
Awards Won
What I focus on
Frontend Architecture
Building scalable component systems, design tokens, and modular codebases in Next.js and React — interfaces that perform and teams can grow with.
Frontend Performance
Code splitting, lazy loading, caching strategies, and render optimization — making sure every millisecond is accounted for before it hits production.
UI/UX Implementation
Translating designs into pixel-perfect, accessible interfaces with smooth interactions — bridging the gap between what Figma shows and what users actually feel.
Experience
Where I've worked
Websure
RemoteWebsure Internal App
An agency management platform with an integrated client portal.
- Implemented session-based authentication with RBAC-driven UI access control and leveraged Next.js Server Actions for secure, type-safe data mutations across internal and client portal surfaces.
- Integrated Clockify API for real-time retainer hour tracking and sync, optimized performance with SWR-based client-side caching, and enforced audience-aware route protection via a centralized proxy layer.
Skills
What I work with
Frontend
10 technologies
Next.js
Primary Framework- Built a full CRM SaaS, ecommerce platform, HRM, ticketing platform, and headless CMS with it.
- Leveraged App Router, Server Actions, and Server Components for performance and type safety.
- Owned the architecture end-to-end across multiple production apps.
Selected Work
Featured Projects
Agency Management Platform
Websure Internal App
- Session-based auth with RBAC-driven UI access control across internal and client portal surfaces.
- Clockify API integration for real-time retainer hour tracking with SWR-based caching.
- Centralized proxy layer for audience-aware route protection.
Featured Work
A product I built end-to-end
Gain.io
Gain Solutions · April 2025 – March 2026
Gain.io is a full-featured multi-tenant CRM SaaS platform built for managing customer relationships, sales pipelines, and business workflows. I was the main frontend engineer — responsible for the architecture, component system, and end-to-end delivery of the entire frontend.
What I built
Multi-Tenant Architecture
- Subdomain-based tenant isolation — each organization runs on its own *.gain.io subdomain.
- RBAC-driven UI access control with role and permission-aware component rendering.
- Dynamic organization switching with context-aware state management via Redux Toolkit.
Tech Stack
Services
What I can build for you
Education
Academic background
Bachelor of Science (B.Sc)
Computer Science & Engineering
Daffodil International University
3.74
CGPA
2022
Passed
4.00
Scale
Key Courses
Programming & Problem Solving
Data Structures & Algorithms
Java OOP
Microprocessor & Assembly
Discrete Mathematics
Software Design & Architecture
Machine Learning
Web Development
Database Systems
Computer Networks
Major
Deep Learning
Final Year Project
Agricultural Pest Detection Using Deep Learning
Secondary Education
Junior School Certificate
BN School & College, Chittagong
Secondary School Certificate
BN School & College, Chittagong
Higher Secondary Certificate
BN School & College, Chittagong
Recognition
Awards & Certificates
Awards
Recognition received for professional excellence.
Hustler of the Year
Ethertec
- Recognized for relentless drive and ownership across multiple projects.
- Consistently delivered beyond expectations under tight deadlines.
- Demonstrated strong initiative in solving complex technical challenges.
- Contributed significantly to team culture and productivity.
Get in Touch
Let's work together
Available for new opportunities
I'm a full-stack engineer with 3+ years of experience building scalable web applications. Open to full-time roles, part-time engagements, contract work, and freelance projects — remote or on-site.
Whether you have a product idea, need an extra hand on your team, or just want to talk tech — feel free to reach out. I'll get back to you within 24 hours.
Experience
3+ Years
Projects
10+ Delivered
Stack
Typescript . Next · Express · PostgreSQL
Location
Dhaka, BD · Remote
khandokershamimulhaque. kashfee.58
khandoker-shamimul -haque
GitHub
shamimulhaque1992
shamimul_hq1992
Contact Details
Phone
+880 1779312970
khandokershamimulhaque@gmail.com
Address
Uttar Badda, Dhaka
Bangladesh — 1212
Response time
Usually within 24 hours