
Arslan Shah
Full Stack Web Developer, ReactJS, Machine Learning Engineer, AI Automation
Skills

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Portfolio
Werkervaring
Enterprise-Grade Financial Management System
LinkedIn • Freelance
Dec 2025 - Present • 5 mos
I developed a professional Banking Ledger and CMS designed for internal institutional operations. This system acts as a centralized Double-Entry Accounting Engine, allowing institutions to manage deposits, withdrawals, and transfers with 100% audit accuracy. Core Functionalities for the Client: Automated Ledger Logic: Every transaction automatically triggers matching General Ledger (GL) entries, ensuring the institution’s books are always balanced. Maker-Checker Workflow: Built-in Approval Hierarchy where transactions are placed "On Hold" until verified by an authorized manager—crucial for financial security and audit trails. Chequebook Management: A dedicated module to track, lock, and process physical cheque leaves upon withdrawal. Internal Reconciliation: Includes a "Bank Account Entry" feature to reconcile internal records against institutional bank heads (e.g., HBL, Soneri) for perfect bookkeeping. Technical Excellence: Architecture: Built with a high-concurrency Node.js backend and a reactive Next.js frontend. Data Integrity: Utilizes PostgreSQL with strict relational constraints to prevent any data loss or duplicate entries during high-volume operations. Security: Implemented role-based access control (RBAC) to manage sensitive financial operations.
Upwork
Fulltime • 9 yrs
Full Stack Developer (Freelance)
Jan 2019 - Present • 7 yrs 4 mos
Working as a Senior Full Stack Developer specializing in MERN Stack and Laravel. Leading development of scalable web applications, SaaS platforms, and enterprise solutions. • 🚀 Built high-performance web apps using React.js, Node.js & Laravel • 🔗 Developed secure REST APIs & third-party integrations • 📊 Designed CRM, ERP & admin dashboards for business automation • ☁️ Deployed applications on AWS, Docker & CI/CD pipelines • 🤖 Integrated AI features using OpenAI APIs • 🔐 Ensured security standards (GDPR, PCI-DSS compliance)
Full-Stack Freelance Agency Hub & Portfolio
Jan 2024 - Sep 2025 • 1 yr 8 mos
I engineered a Full-Stack Freelance Agency Platform designed to solve the problem of fragmented professional identities. Using a high-performance FastAPI backend and a Next.js frontend, I built a system where freelancers can aggregate unified agency link ,This application allows users to sync their profiles from platforms like Upwork and Fiverr into a single, sleek dashboard, similar to how Upwork displays specialized profiles Key Technical Features: Database Architecture: Utilized Neon PostgreSQL for a serverless, scalable SQL structure, ensuring complex relational data between users and their cross-platform links are handled efficiently. Robust Backend: Built with FastAPI to provide high-speed asynchronous API endpoints for seamless data retrieval and account linking. Modern Frontend: Developed a responsive, SEO-friendly UI using Next.js, focusing on a clean "Agency-style" aesthetic. Integration: Implemented secure API integrations for external platforms and a robust Payment Gateway for subscription or service-based transactions. Account Linking Logic: Custom logic to aggregate and display external reviews and portfolio links in a unified format