👋 Welcome to my portfolio
Available for Work
Usama Hassan.
Full-Stack Web Developer
Full-Stack Web Developer with hands-on experience building production-ready SaaS platforms, REST APIs, and real-time applications using the MERN stack. Built and maintained Flovoa, a live multi-tenant SaaS platform, handling system architecture, backend development, database design, security, automated testing, CI/CD pipelines, and Docker-based deployment. Experienced with React.js, Next.js, TypeScript, Node.js, Express.js, MongoDB, MySQL, Socket.IO, JWT authentication, and role-based access control. Focused on building scalable, secure, and maintainable applications with strong attention to code quality and real-world usability.
What I Do
TECHNICAL EXPERTISE.
Frontend Development
Backend & APIs
Databases & ORMs
AI & Integrations
DevOps, CI/CD & Tools
Core Competencies
Career Journey
EXPERIENCE.
Founder & Full-Stack Developer
Product Development
flovoa.com
Flovoa • Enterprise Project Management & Workflow Automation Platform
Founded and developed Flovoa, a live multi-tenant SaaS platform engineered for project management, workflow automation, client collaboration, and financial operations.
- Founded and developed Flovoa, a multi-tenant SaaS platform designed for project management, workflow automation, client collaboration, and financial operations.
- Built the full-stack architecture using React, TypeScript, Vite, Tailwind CSS, TanStack Query, Node.js, Express.js, MongoDB, and Mongoose.
- Developed real-time collaboration features with Socket.IO, including live presence, Kanban board synchronization, typing indicators, and workspace messaging.
- Designed and implemented a four-tier role-based access control system with Owner, Admin, Member, and Guest roles. The system includes tenant isolation and granular authorization controls.
- Created secure passwordless client portals using cryptographic access tokens, allowing clients to review deliverables, approve milestones, and submit feedback without creating accounts.
- Developed an invoicing and ledger system with a nine-state workflow, partial payment reconciliation, automated PDF invoice generation, idempotency protection, and immutable audit logs.
- Integrated Paddle Billing and secure webhook processing to manage subscriptions, payment receipts, and plan-based access across workspace seats, projects, and cloud storage.
- Implemented security features including TOTP-based two-factor authentication, Google OAuth 2.0, Cloudflare Turnstile, sliding-window rate limiting, and AES-256-GCM encrypted database snapshots.
- Developed and maintained more than 250+ automated test suites across frontend and backend applications using Jest, Vitest, MongoDB Memory Server, Supertest, Axe-Core accessibility testing, and visual regression testing.
- Containerized the production infrastructure using Docker and Docker Compose with non-root containers, isolated networks, and secure database configuration.
- Built CI/CD pipelines with GitHub Actions to automate testing, linting, code quality checks, and bundle size validation.
Web Developer (Full-Stack)
02/2025 — 02/2026ARWEN TECH • Islamabad
Built full-stack web applications using React.js, Node.js, Express.js, MongoDB, and TypeScript for multiple client projects with robust permission architectures.
- Built full-stack web applications using React.js, Node.js, Express.js, MongoDB, and TypeScript for multiple client projects.
- Developed RESTful APIs with JWT authentication and multi-role access control for complex user permission systems.
- Integrated third-party APIs and payment gateways to support business requirements and extend application functionality.
- Optimized React components and API queries to improve application performance, loading times, and responsiveness.
- Implemented real-time functionality using Socket.IO for live data synchronization.
- Worked with Git and GitHub workflows, including branching, code reviews, and release cycles across team projects.
Practical Work
FEATURED PROJECTS.
AI & Next.js Platform
ResumeForge AI
AI Resume and Career Platform
- Developed an AI-powered platform that helps users create resumes and improve their career documents.
- Built more than seven professional resume templates with live preview and customizable layouts, typography, colors, and sections.
- Integrated OpenAI-powered features for professional summaries, bullet-point improvements, impact quantification, and skill suggestions.
- Developed an ATS resume scanner that compares resumes with job descriptions, identifies missing keywords and skills, and provides improvement recommendations.
- Built an AI cover letter generator with resume integration and PDF export functionality.
- Implemented authentication, resume management, MongoDB data storage, Stripe subscription billing, PDF generation, and JSON backup.
Real-Time Systems & Docker
QueueMaster
Real-Time Queue and Token Management Platform
- Developed a full-stack platform for managing customer queues and service tokens with separate workflows for customers, staff, and administrators.
- Implemented real-time queue synchronization and token notifications using Socket.IO.
- Designed atomic token generation to prevent duplicate tokens during concurrent requests.
- Built workflows for ticket creation, token calling, serving, completion, skipping, and recall.
- Implemented role-based access control, JWT authentication, analytics, department management, and service counters.
- Added automated integration testing and Docker-based deployment.
Enterprise POS & tRPC
OPERra Nexus
Inventory and POS Management Platform
- Developed a full-stack inventory and point-of-sale platform for retail and warehouse operations.
- Built workflows for managing products, SKUs, barcodes, suppliers, stock movements, and sales.
- Developed a multi-item POS checkout system with safeguards to prevent inventory from going below available stock.
- Implemented role-based workflows for administrators, managers, and staff.
- Built analytics for revenue, sales activity, inventory levels, and top-selling products.
- Developed type-safe APIs, inventory audit trails, and automated testing.
Full-Stack Recruitment Platform
CareerForge
Job Application and Interview Platform
- Developed a full-stack application for managing job applications, interviews, reminders, and recruitment progress.
- Built Kanban and list views to help users track applications across different hiring stages.
- Implemented interview scheduling, preparation notes, recruiter follow-ups, and reminders.
- Developed analytics for application pipeline metrics, response rates, active applications, and offers.
- Implemented JWT authentication and user data isolation.
- Developed REST APIs for authentication, job applications, interviews, reminders, and analytics.
Academic Background
CREDENTIALS.
Education
2021 — 2025 | Faisalabad
Bachelor of Science in Information Technology (BS IT)
University Of Agriculture Faisalabad
Faisalabad, Pakistan
Certifications
Cisco
Networking Basics
Cisco
Introduction to Cyber Security
Let's Connect
CONTACT.
Usama Hassan
Full-Stack Web Developer | MERN Stack