Hi, I'm Chandan Paul
Full-stack backend focused software developer with 4 years of industrial experience, building production-grade web applications across government, travel, e-commerce, ai products and enterprise domains. M.Sc. in Information & Cybersecurity from the University of Dhaka.
Who I Am
4 years shipping
industrial products
As the sole backend architect on multiple live systems, I own everything from API design to deployment, cutting API response times from 800ms to 120ms with Redis caching and queue workers, and building complete payment backends across Stripe, PayPal, SSLCommerz, and Toss. On the research side, my master's thesis PhishLens fine-tuned a Llama 3 8B multimodal model for real-time phishing detection, outperforming single-modality baselines across datasets.
Chandan Paul
Software Developer
What I Work With
Skills & Technologies
Languages
Frameworks
Security
Tools
Career
Work Experience
TechTrioZ Solutions
Software Engineer
Building and maintaining production-grade web applications for clients across multiple industries.
- Architecting Laravel REST APIs consumed by Flutter and React.js clients
- Implementing Redis caching and queue workers for high-load endpoints
- Integrating third-party services: FCM, Brevo, Twilio, SSLCommerz
- Code review and mentoring junior developers
What I've Built
Software Projects
Smart Governance System
Ministry of Commerce, Bangladesh
Government platform that digitized manual workflows of trade organizations — document submission, status tracking, and official communication.
- Requirement analysis with ministry officers
- Laravel controllers & Eloquent models
- Bootstrap-based UI with dynamic forms
The Visit London
UK-Based Travel Agency
REST API backend for a UK travel platform serving Flutter mobile app and React.js admin panel — managing full booking lifecycle.
- Real-time updates via Laravel Events
- FCM push, Brevo email & Twilio SMS
- Redis-ready queue config
- React.js admin modules
Shukran E-commerce
Subscription-Based SaaS
Sole-architected backend using Service Layer pattern, serving Flutter and React.js clients. Built for reliability under production load.
- Service Layer pattern with REST API
- SSLCommerz payment & webhook
- Redis caching + queue workers
- Health checks and structured logging
Security Work
Cybersecurity Projects
Web Application Vulnerability Assessment
Performed black-box VAPT on a sample e-commerce application. Identified OWASP Top 10 vulnerabilities including SQL injection, XSS, and IDOR.
TryHackMe — Pre-Security Path
Completed the Pre-Security learning path covering networking, Linux fundamentals, and web fundamentals.
Credentials
Certifications
Introduction to Cybersecurity
Cisco · Cisco NetAcad
Academic Background
Education
Professional Master's in Information & Cybersecurity
University of Dhaka
Deepening expertise in cybersecurity, threat modeling, and secure system design.
Bachelor of Computer Science & Engineering
Independent University, Bangladesh
Strong foundation in computer science fundamentals, software engineering, algorithms, and OOP.
Get In Touch
Let's Talk
Have a project in mind, want to collaborate, or just want to say hello? I'm always open to discussing new opportunities.