Architecting high-performance full-stack applications with scale in mind.
Sabbir Mahmud — Leading technical strategy for end-to-end distributed systems. Crafting seamless user experiences backed by robust, sub-100ms latency infrastructure.
Professional Trajectory
Engineering excellence through iterative growth.
Backend Developer (Python, Django)
- Integrated the Otter aggregation platform to synchronize restaurant orders across multiple providers, enabling 35% client expansion.
- Implemented real-time menu tracking via Django Channels, boosting customer retention by 30%.
- Connected Clover POS with the order management system to streamline cash management, reducing losses by 10%.
- Optimized background workflows and task scheduling with Celery and Redis caching, cutting server overhead by 5%.
- Built dynamic delivery features using Google Maps and Mapbox APIs with live updates, reducing delivery overhead by 10%.
Full Stack Web Developer (Python || JavaScript)
Ecosystem & Capabilities
Architectural foundations for high-performance and containerized scaling.
Scripting, Celery task automation, background execution
Interactive web pages and dynamic frontend controls
Type-safe client & server business logic architectures
Robust MVC structures and secure backend logic
High-performance asynchronous REST API development
Non-blocking event-driven API runtime engines
Minimalist server routing and middleware configuration
Interactive user interfaces and component state control
SEO-optimized apps & React Server Components
Cross-platform mobile applications for iOS & Android
Containerized deployment and microservices isolation
Reverse proxy, load balancing, and SSL configuration
Relational database schema and transaction controls
Document-based high-throughput NoSQL data structures
Bidirectional sub-100ms real-time event messaging
OS configuration, bash scripting, & remote host control
Distributed hosting, EC2, S3, and VPC networks
Version control, collaborative branches, and git-flow
Automated deployment pipelines and testing integrations
Designing secure, self-documenting OpenAPI endpoints
Operational Performance
Real-world engineering metrics achieved across production systems.
Consistent year-over-year expansion driven by system reliability
High-availability active-passive clustering and failover systems
Production-ready enterprise integrations active on AWS hosting
Optimal query caching, CDNs, and database tuning benchmarks
Selected Projects
Scalable solutions for complex problems.
Express Controller Sets
controllerSets Designed for Node.js/Express.js developers, it follows modern JavaScript architecture to minimize code. Simply create a model, import ControllerSet, instantiate it, define routes, and your API is ready. It streamlines data handling and enables validation via Mongoose models. Additionally, the express-controller-sets-router package simplifies route definition, while. controller-sets-s3-file-upload enables efficient S3 file uploads.
Python Advanced Invoice Generator
Personal python project to generate advanced pdf invoices. It uses pdfkit to generate pdf from html template. It also uses jinja2 to render dynamic data to the template. It uses wkhtmltopdf as the pdf rendering engine.
import pdfkit
class Invoice:
def make_pdf():
html = render()
save(html)
ISP Billing System
A billing system for Internet Service Providers (ISPs) that automates billing, payment processing, and customer management. It integrates with popular payment gateways like PayPal, Stripe, and Razorpay. The system generates invoices, sends payment reminders, and tracks payment status. It also provides a customer portal for users to view their invoices and payment history.
- Mikrotik Radius Server Integration
- Automated PayPal / Stripe / Razorpay payments
- Real-time bandwidth & traffic usage monitoring
Let's build something exceptional.
Currently available for architectural consulting and senior engineering roles.