Khushbu Islam

Full Stack Developer

Feb 2025 - Present • 1 yr 3 mos

• Developed IoT-based system: Admin Web App (Next.js), Mobile App (Flutter), Backend (Nest.js + MongoDB) • Built REST APIs for Device integration, User & Role management, TDS Device, Support ticket, Product management, Ecommerce, Customer Order etc. • Implemented real-time monitoring and notifications

Senior Back End Developer

Feb 2023 - May 2025 • 2 yrs 3 mos

Company: “The Dot Red Ltd” Position: Senior Back End Developer Description: “Worked with multiple local and international clients building scalable Node.js and MongoDB applications.” • Build new features, modules and components for the assigned applications • Conduct code reviews and optimize code • Give demos to the documentation team about the new features • Once the feature is production ready do the necessary branch closing, merging and conflict resolution before releasing the feature • Develop log/audit trial feature for each module • Functional testing of the features developed • Ensure errors are properly handled in the back-end and in the front-end 2023-03 – 04-2025 2025-04 – Present . Support • Take daily backup of each application, store the backups safely and send a notification to line manager • Provide both functional and technical support to clients • Communicate with customers in direct screen share calls when needed • Participate in support meetings with customer when required • Build MongoDB queries and reports requested by clients comprising of complex requirements • Understand the bug reported by client • Analyze and debug to find the root cause • Analyze existing APIs and create new custom APIs according to requirements • Participate in weekly development meetings • Maintained proper documentation of all development processes and procedures Skills: • Warehouse Management System • Ecommerce Management System • Courier Management System • Finance • User Management System • Role Management System • Warehouse Management System • Role Based Access Control (RBAC) • Stimulsoft Report Designing Tools • MongoDB Aggregation • Multiple various Report Generating • Working on Desktop Application using Electron.js • Microsoft SQL Server • Mongoose ODM • SaaS Application Development • Node Mailer • Team Work

Back End Developer

Jul 2021 - Feb 2023 • 1 yr 7 mos

Worked with local software company "The Dot Red Ltd" where international clients building scalable Node.js and MongoDB applications. • Designed, developed, and maintained highly scalable RESTful APIs using Node.js, Express.js, and MongoDB for the company's e-commerce platform • Optimized database queries in MongoDB and MongoDB Aggregation, improving product search and showing various type reports • Implemented secure authentication and authorization mechanisms using JWT tokens • Collaborated with front-end developers to integrate backend APIs and ensure a seamless user experience • Debugged issues in existing codebase and identified potential security vulnerabilities • Researched emerging technologies related to backend development best practices • Created detailed documentation for all developed APIs and databases structures • Performed regular maintenance tasks, including patching, upgrades, backups and restorations • Maintained version control systems such as Git in source code over time • Designed secure authentication mechanisms based on OAuth2 standards • Wrote well-designed, testable code • Implemented agile development practices across multiple projects, ensuring timely delivery of high-quality solutions within budget constraints • Analyzed user needs and software requirements to determine feasibility of design within time and cost constraints • Prepared reports and correspondence concerned project specifications, activities and status 2021-08 - 2023-02 . • Wrote detailed technical documentation outlining system architecture, coding conventions and best practices