Muhammad Usama

Available to hire

I’m a Karachi-based Full-Stack Software Engineer specializing in building scalable web applications, SaaS platforms, and API-driven solutions. NET Core, C, and SQL Server.

About

I’m a Karachi-based Full-Stack Software Engineer specializing in building scalable web applications, SaaS platforms, and API-driven solutions. My expertise includes React.js, Node.js, Express.js, MongoDB, ASP.NET Core, C#, and SQL Server. I have hands-on experience developing production-level applications, designing secure backend systems, integrating REST APIs, and building responsive user interfaces. I’m open to remote opportunities worldwide and on-site roles in Karachi, where I can contribute to impactful projects, solve complex technical challenges, and deliver reliable, maintainable software.

Languages

  • EnglishAdvanced
  • ArabicIntermediate
  • UrduFluent

Industry experience

  • Software & Internet
  • Retail
  • Travel & Hospitality
  • Media & Entertainment
  • Computers & Electronics

More experts in Karachi, Pakistan

Projects · 15

https://usama-cinematic-portfolio.vercel.app/

🚀 My Developer Portfolio | Full-Stack Software Engineer I’m excited to share my portfolio, showcasing my work in full-stack development, SaaS engineering, distributed systems, and AI-powered applications. 💻 Core Expertise • Frontend: React.js, Next.js, JavaScript, Angular • Backend: Node.js, Express.js, C, ASP.NET Core, REST APIs • Databases: MongoDB, SQL Server, MySQL • Tools & Technologies: Git, Docker, Redis, Kafka, JWT, AI API integrations 📌 Featured Projects • Tummly — Multi-location restaurant feedback SaaS platform • EventSphere — Full-stack event and expo management platform • StreamScale — Distributed video-streaming system design project • Usama AI — AI-powered chatbot with live web search • Verendo — Full-stack web application and agency project • Nexora — Flutter/Dart mobile application concept My focus is building reliable, scalable applications that combine thoughtful user experiences with robust backend engineering. 🌍 Based in Karachi, Pakistan | Open to remote opportunities worldwide. 🔗 Explore my portfolio: https://www.twine.net/signin I’m always open to connecting with developers, recruiters, and teams building meaningful products. SoftwareEngineering FullStackDeveloper ReactJS NextJS DotNet SaaS AIEngineering WebDevelopment

  • Back-End Developer
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Usama AI — LLM-Powered Chatbot

Usama AI | AI-Powered Chatbot with LLM and API Integration Developed an AI-powered chatbot that integrates large language models and external APIs to support conversational interactions and live web-based question answering. Key Contributions: Integrated large language model APIs for conversational responses. Connected web search functionality using external search APIs. Implemented backend logic to manage requests and communicate with AI services. Developed a modern chat interface using web technologies. Applied server-side handling for API credentials to avoid exposing secrets in client-side code. Explored streaming responses and AI-powered application workflows. Technology Stack: Next.js, JavaScript, LLM APIs, REST APIs, AI Integration, Web Search APIs. Project Focus: Generative AI, LLM Integration, AI Application Development, API Engineering. Role: Full-Stack AI Developer

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Tummly

Tummly | Multi-Location Restaurant Feedback SaaS Project Overview Tummly is a restaurant feedback SaaS platform designed to help restaurant owners collect guest feedback through QR codes and manage feedback operations across multiple restaurant locations. The Problem Restaurants need a convenient way to collect customer feedback, understand guest experiences, and manage operations across multiple locations. Tummly addresses this need through a centralized platform with QR-based feedback functionality and a structured restaurant onboarding workflow. My Contribution I independently developed Tummly, taking ownership of frontend and backend development, database architecture, API integration, and application functionality. Key contributions: • Built responsive user interfaces using React.js based on Figma designs. • Developed RESTful APIs using C and ASP.NET Core. • Designed a multi-tenant database structure using SQL Server. • Implemented JWT authentication, OTP email verification, and role-based access control. • Developed dynamic QR-code functionality for restaurant feedback workflows. • Implemented restaurant onboarding workflows, including trial requests, administrative approval, and secure registration. • Built multi-account, restaurant group, and location management workflows. • Integrated frontend components with backend services and supported deployment. Technology Stack React.js Vercel Project Outcome Developed a multi-location restaurant feedback platform designed to support restaurant onboarding and centralized management. The platform has been described as serving 20+ UK restaurant locations. My Role: Solo Full-Stack Developer Project Type: SaaS Web Application Application Screenshots Include actual screenshots of the application, such as: • Restaurant dashboard and analytics

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SupplyChain Nexus — Real-Time Supply Chain Intelligence Platform

SupplyChain Nexus | Supply Chain Simulation & Intelligence Engine Problem: Businesses need to understand how supplier delays, demand fluctuations, inventory shortages, and transportation disruptions affect fulfillment and operating costs. Proposed Solution: Develop a supply chain intelligence platform that models relationships between suppliers, warehouses, products, and shipments, then simulates operational changes and estimates their impact. Core Features: Supplier, product, warehouse, and shipment data management. Inventory movement ledger and stock reconciliation. Demand forecasting using historical and synthetic datasets. Reorder-point calculations and stockout risk alerts. Event-driven shipment and inventory updates. What-if simulations for supplier delays and demand spikes. Optimization recommendations for replenishment and stock allocation. Data validation, scheduled processing, and reproducible test scenarios. Technology Stack: Python, FastAPI, React, TypeScript, PostgreSQL, Redis, Apache Kafka, Pandas, scikit-learn, Docker, GitHub Actions. Engineering Focus: Data pipelines, forecasting, event-driven architecture, optimization, simulation, and integration testing. Role: Full-Stack Software Engineer | Independent Project

  • Back-End Developer
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SentinelGrid — Industrial IoT Monitoring & Predictive Maintenance

SentinelGrid | Industrial IoT Monitoring & Predictive Maintenance Problem: Industrial teams need to identify abnormal equipment behavior early, investigate sensor events, and reduce unplanned downtime. Proposed Solution: Develop an industrial monitoring system that ingests machine telemetry, evaluates configurable thresholds, detects anomalies, and coordinates maintenance workflows. Core Features: Simulated IoT devices transmitting temperature, vibration, pressure, and operating metrics. Real-time telemetry ingestion through REST APIs or MQTT. Streaming event processing and configurable anomaly rules. Equipment health scoring and historical trend analysis. Alert prioritization, incident assignment, and maintenance tracking. Device authentication, user permissions, and audit history. Automated tests and reproducible deployment pipelines. Technology Stack: Angular, TypeScript, Node.js, Express.js, MQTT, PostgreSQL, Redis, Socket.IO, Docker, GitHub Actions. Engineering Focus: Event-driven architecture, telemetry ingestion, real-time systems, fault detection, data modeling, and reliability engineering. Role: Full-Stack Software Engineer | Independent Project

  • Back-End Developer
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  • Full Stack Developer
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Resturant Managment System

Restaurant Management System | Core PHP & MySQL Project Overview Developed a restaurant management web application using Core PHP, designed to streamline restaurant operations through a centralized web-based system. The Problem Managing restaurant information, menu items, and daily operations manually can be time-consuming and inefficient. This project aimed to simplify restaurant workflows through a structured, database-driven application. My Contribution I worked on developing the application using Core PHP, implementing server-side functionality and database integration to support restaurant management workflows. Key areas of development included: Developed dynamic web pages using PHP, HTML5, CSS3, and JavaScript. Implemented backend functionality using Core PHP. Integrated MySQL for storing and retrieving application data. Built database-driven forms and management functionality. Connected frontend interfaces with backend logic. Focused on maintainable code, data handling, and usability. Technology Stack Core PHP Bootstrap Project Type: Web Application My Role: PHP Developer Application Screenshots Add actual screenshots of the features you implemented, such as the homepage, menu management, order processing, or administration pages. Key Learning Outcomes Strengthened my understanding of server-side programming, database-driven web development, CRUD operations, and full-stack application architecture using Core PHP and MySQL.

  • Back-End Developer
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Real Estate Agency Platform — Angular, .NET & C#

Real Estate Agency Web Application | Angular & ASP.NET Core Developed a full-stack real estate agency web application using Angular for the frontend and C with ASP.NET Core for backend development. Key Contributions: Developed frontend components using Angular and TypeScript. Implemented backend application logic using C and ASP.NET Core. Designed and integrated RESTful APIs for frontend-backend communication. Worked with database-driven application functionality using SQL technologies where applicable. Structured the application into maintainable frontend and backend layers. Focused on reliable data handling and responsive user interfaces. Technology Stack: Angular, TypeScript, C, ASP.NET Core, REST APIs, SQL Server. Project Focus: Full-Stack Development, .NET Engineering, API Integration, Real Estate Technology. Role: Full-Stack Developer

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NexusFlow — Distributed Job Orchestration & Automation Engine

NexusFlow | Distributed Job Orchestration Engine Problem: Applications often need to execute long-running tasks reliably without blocking API requests. Tasks can fail, workers can crash, and duplicate execution can create inconsistent results. Proposed Solution: Build a distributed job orchestration system that accepts tasks, schedules execution, distributes work to background workers, and provides reliable execution tracking. Core Features: Job submission API with priorities, scheduling, and execution metadata. Worker registration, task claiming, heartbeats, and concurrency limits. Retry policies, exponential backoff, timeouts, and dead-letter handling. Idempotency keys to reduce duplicate side effects. Job dependencies and multi-step workflow execution. Live job status updates and execution logs. Worker health monitoring and failure recovery. Docker-based local cluster with automated integration tests. Technology Stack: MongoDB, Express.js, React.js, Node.js, Redis, BullMQ, WebSockets, Docker, Docker Compose, GitHub Actions. Engineering Focus: Distributed task processing, queue semantics, concurrency, failure recovery, observability, and API design. Role: Full-Stack Software Engineer | Independent Project

  • Back-End Developer
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  • Full Stack Developer
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Nexora — Flutter Mobile Application

Nexora | Cross-Platform Mobile Application Developed Nexora using Flutter and Dart, focusing on cross-platform mobile application development and reusable UI components. Key Contributions: Developed mobile interfaces using Flutter widgets. Implemented application functionality using Dart. Organized UI components for reuse and maintainability. Applied responsive layout principles across mobile screen sizes. Structured the application to support future feature expansion and integration. Technology Stack: Flutter, Dart, Material Design. Project Focus: Mobile App Development, Cross-Platform Engineering, UI Development. Role: Flutter Developer

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  • Full Stack Developer
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Netflix System Design — StreamScale

StreamScale | Distributed Video Streaming System Designed and developed a Netflix-inspired video streaming system using the MERN ecosystem and distributed systems technologies, focusing on scalable architecture, asynchronous processing, and production-style infrastructure. Key Contributions: Designed a modular architecture incorporating API Gateway, authentication, catalog, analytics, and recommendation services. Integrated Apache Kafka for event-driven communication and asynchronous processing. Used Redis for caching and performance optimization. Implemented video processing workflows using FFmpeg and HTTP Live Streaming (HLS). Containerized services using Docker and Docker Compose. Integrated Prometheus and Grafana for monitoring and observability. Documented architectural decisions and validated functionality through automated tests. Technology Stack: MongoDB, Express.js, React.js, Node.js, Docker, Docker Compose, Apache Kafka, Redis, FFmpeg, HLS, Nginx, Prometheus, Grafana. Project Focus: Distributed Systems, System Design, Microservices, Video Streaming, DevOps, CI/CD. Role: Full-Stack Developer / System Designer

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FleetOps Intelligence — Fleet & Route Optimization Software

FleetOps Intelligence | Enterprise Fleet Optimization Platform Problem: Logistics companies face inefficient delivery routes, rising fuel costs, delayed shipments, and limited visibility into vehicle operations. Proposed Solution: Build an enterprise fleet management and route optimization platform that processes delivery requests, assigns vehicles, calculates efficient routes, and tracks operational performance. Core Features: Vehicle, driver, shipment, and fleet management. Route optimization using graph algorithms and configurable constraints. Real-time vehicle location simulation and delivery status updates. Automatic shipment assignment based on capacity, distance, and availability. ETA calculations, delay alerts, and exception handling. REST APIs, role-based permissions, audit logs, and reporting. Background workers for route recalculation and shipment processing. Technology Stack: React.js, TypeScript, C, ASP.NET Core Web API, Entity Framework Core, PostgreSQL or SQL Server, Redis, SignalR, Docker, GitHub Actions. Engineering Focus: Graph algorithms, optimization, asynchronous processing, real-time communication, API architecture, and performance testing. Role: Full-Stack Software Engineer | Independent Project

  • Back-End Developer
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DocuMind Enterprise — AI Document Intelligence & Workflow Automation

DocuMind Enterprise | AI Document Intelligence Platform Problem: Organizations spend significant time searching documents, extracting information, reviewing contracts, and answering repetitive internal questions. Proposed Solution: Build a secure document intelligence system that processes uploaded files, indexes their content, and provides grounded answers with references to the original sources. Core Features: PDF and DOCX ingestion with text extraction and metadata indexing. Background document-processing jobs with retry and failure handling. Retrieval-Augmented Generation (RAG) with chunking, embeddings, and semantic search. AI-generated answers with document citations and source references. Document permissions and tenant-level data isolation. Workflow approvals, processing status, and audit trails. Evaluation tests for retrieval quality, answer relevance, and hallucination reduction. Secure API integration with an LLM provider. Technology Stack: Next.js, React, TypeScript, C, ASP.NET Core Web API, Entity Framework Core, PostgreSQL with pgvector, Redis, background workers, Docker, GitHub Actions, LLM APIs. Engineering Focus: RAG pipelines, vector search, background processing, authorization, secure multi-tenancy, and AI evaluation. Role: Full-Stack AI Software Engineer | Independent Project

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Work experience

Full-Stack Developer · 5Sum Ltd.Mar 2026 – Sep 2026 · 7 mos

Built and delivered full-stack features for a live SaaS platform using React.js, ASP.NET Core, and SQL Server. Converted Figma designs into pixel-perfect, responsive React components and implemented REST APIs connecting the React frontend to ASP.NET Core backend. Developed JWT authentication and role-based access control, tested and debugged production issues, and supported deployment cycles.

Education

Advanced Diploma in Software Engineering · Aptech Learning2030 – 2026

Certifications and awards

Matriculation (Computer Science)2030 – 2026

Testimonials · 5.0 from 3 reviews

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