Portfolio
Md Sajjadur Rahaman
Full Stack Developer · DevOps · AI Practitioner
$ cat /engineers/md-sajjadur-rahaman.md
Full Stack Developer building end-to-end products across frontend, backend, and cloud infrastructure. Experienced in shipping scalable web platforms, API-driven services, and AI-powered features with production reliability.
Status: building production full-stack products with ai + cloud
$ render --scene cloud-core --links realtime
session://prod-shell
$ init portfolio-stack --profile sajjadur
[ok] backend services online
[ok] ai inference bridge connected
[ok] cloud cluster synced
// illustrative readout
neural-flow: 98.7%
cloud-uptime: 99.99%
inference-latency: 41ms
$ _
Cloud Mesh
edge ingress
AI Core
inference bridge
Runtime
service layer
Data Layer
persistence
$ profile
About Me
The engineer behind the systems — what I build, how I think, and where I focus.
Md Sajjadur Rahaman
Full Stack Developer · DevOps · AI Practitioner
I'm a full stack developer who enjoys taking products from an empty repo to production, designing the API, provisioning the infrastructure, and shipping the interface that sits on top. Most of my depth is on the backend and DevOps side: scalable services in Laravel and Express, data modeling in MySQL and MariaDB, and deployment through Docker, Nginx, and CI/CD pipelines.
Lately I've focused on bringing AI into real products, secure API integrations, usage tracking, and features built on OpenAI and Azure AI. What I care about most is clean architecture, production reliability, and code that's still easy to work with a year later.
$ capabilities
Core Competencies
Full-stack depth across frontend, backend, cloud, and AI integration for shipping reliable digital products.
Frontend Engineering
- Next.js
- React + TypeScript
- Tailwind CSS, Shadcn UI
- Responsive UI architecture
- Accessible component design
- Performance-focused UX
Backend & APIs
- Laravel
- WinterCMS
- Express.JS
- RESTful APIs
- Authentication & authorization
- Cron jobs & Queue processing
Databases & Data
- MySQL, MariaDB, PostgreSQL
- MongoDB, SQLite
- Redis, Memcached
- Relational schema design
- Data modeling and optimization
- Large-scale exports and reporting
Cloud & DevOps
- Linux (Ubuntu, CentOS, Amazon Linux)
- Docker, Kubernetes
- Nginx, Apache
- CI/CD pipelines, Automation
- Cloud deployment and cost optimization
AI & Integrations
- OpenAI API
- Azure OpenAI / Azure AI Services
- Google Gemini API
- Anthropic Claude API
- Secure API integrations
Platforms
- iOS, iPadOS, macOS, tvOS, watchOS, Android
- Windows and Linux desktop environments
- SwiftUI (shared multi-target architecture)
- Expo / RN, Flutter, Tauri, Kotlin Compose
$ career
Experience
Roles across full-stack engineering, backend development, and freelance product work.
MTS Innovation Sdn Bhd
Full Stack Engineer
October 2023 – Present · 2 yrs 9 mos
Kuala Lumpur, Malaysia
Huacomm Telecommunications Engineering (M) Sdn Bhd
2 yrs 1 moJunior Software Developer
February 2022 – September 2023 · 1 yr 8 mos
Kuala Lumpur, Malaysia
Software Engineer Intern
September 2021 – January 2022 · 5 mos
Kuala Lumpur, Malaysia
Freelance
Backend Developer
November 2019 – September 2021 · 1 yr 11 mos
Frontend Developer
October 2018 – November 2019 · 1 yr 2 mos
$ education
Education
Academic background in information technology and computer science.
School
Universiti Tenaga Nasional
Master's degree, Information Technology
June 2022 – June 2024
Kajang, Malaysia
School
City University Malaysia
Bachelor of Science (BS), Computer Science
September 2019 – February 2022
Petaling Jaya, Malaysia
School
Malvern International Academy Malaysia
High School Diploma, Computer Technology / Computer Systems Technology
October 2016 – July 2019
Kuala Lumpur, Malaysia
$ systems
Latest Projects
Recent production systems across backend APIs, real-time services, and cross-platform products.
System
Flowpamine: AI Project Management & Knowledge App (Desktop)
Offline-first AI project management and knowledge organization desktop app.
$ service/desktop-workspace
Desktop Workspace
- Workmap, Canvas, Kanban, Calendar, and Card Library in one app
- Unified workspace for projects, tasks, notes, and documents
$ service/ai-intelligence-layer
AI Intelligence Layer
- Local LLM-powered summaries, task breakdowns, scheduling, tagging, and related ideas
- Optional cloud AI for heavy tasks like document merge and canvas organization
$ service/rag-&-semantic-search
RAG & Semantic Search
- RAG recommendations and vector search across notes and documents
- Semantic caching with LRU + TTL for faster repeated responses
System
Flowpamine: Real-Time Collaborative Project Management Platform (Backend API)
Real-time collaborative project management platform backend API.
$ service/real-time-whiteboard-engine
Real-Time Whiteboard Engine
- Create, update, and delete notes, tasks, and areas in a shared board
- Broadcast live changes to all connected clients via WebSockets
$ service/integration-&-scheduling-services
Integration & Scheduling Services
- Google Drive, OneDrive, and SharePoint file integration
- Microsoft Graph-powered calendar sync and event notifications
$ service/reliability-&-operations
Reliability & Operations
- Queue-backed persistence for concurrent collaboration workloads
- Custom artisan command suite for cleanup, renewal, sync, and recurring events
System
Property Management & Clubhouse Platform (Backend API)
Winter CMS backend APIs for resident services, property operations, and clubhouse workflows.
$ service/resident-access-services
Resident Access Services
- Visitor approval workflows with QR pass generation
- Resident-facing access and notification APIs for mobile and web clients
$ service/property-&-clubhouse-operations
Property & Clubhouse Operations
- Units, blocks, floors, settings, and resident data management
- Activities, facility reservations, monthly passes, and residency requests
$ service/notifications-&-reporting
Notifications & Reporting
- Push notifications via Firebase/Expo
- Reporting workflows with create, list, reply, and delete actions
$ engineering focus
How I Build
Full-stack systems designed for usability, scalability, security, and long-term maintainability.
01
End-to-end product ownership from UI to infrastructure
02
Clean architecture across frontend and backend layers
03
Scalable APIs and resilient distributed services
04
Production observability, reliability, and performance
05
Security-first development and integration patterns
Contact
Let’s Build Something Reliable
Open to backend engineering, DevOps, and AI systems work where architecture quality, performance, and production reliability matter.