Soshal Dahal — Full Stack Developer

Full Stack Developer (Contract) - Helvetas + Kathmandu University (Urban Future Scape Project)

Duration: Jan 2025 - Feb 2025
Summary:

• An interactive platform for urban sustainability research and geospatial data visualization developed for Helvetas and Kathmandu University
• The platform supports urban research and sustainability by providing user-friendly interfaces and secure backend services

Responsibilities:

• Built the complete frontend, backoffice, and RESTful APIs as a solo developer.
• Developed scalable and user-friendly interfaces using React.js.
• Designed and implemented secure backend services using Node.js and Express.
• Structured and connected data models using MongoDB and PostgreSQL.
• Collaborated with stakeholders for timely feedback and adjustments.

Technologies: React.js, Node.js, Express, MongoDB, PostgreSQL

Full Stack Developer - Kotuko Nepal Pvt Ltd (Multiple Full-Stack Web Applications)

Duration: March 2022 - Present
Summary:

• Development and maintenance of multiple scalable full-stack web applications using modern technologies
• The projects involved both greenfield and existing codebases, focusing on delivering performant features in agile teams

Responsibilities:

• Developed and maintained web applications using Node.js, Express, React, MongoDB, PostgreSQL, and MySQL.
• Collaborated with cross-functional teams including designers, developers, and project managers.
• Followed clean Git workflows including feature branching, pull requests, and code reviews.
• Handled API design, frontend integration, project planning, task estimation, and bug resolution.

Technologies: Node.js, Express, React, MongoDB, PostgreSQL, MySQL, Git, AWS

Backend Developer (Arriva)

Summary: A large-scale public transportation platform serving thousands of users across Italy, managing complex operations such as user authentication, ticketing, and asynchronous backend processing.
Responsibilities:

• Integrated AWS Cognito for secure and scalable user authentication and authorization.
• Used AWS SQS and Lambda to automate backend tasks asynchronously.
• Implemented optimized backend logic for bulk user data exports and processing without downtime.
• Built and maintained REST APIs for ticket bookings, admin tools, and real-time system updates.
• Applied best practices for secure API development, validation, and access control.

Technologies: Node.js, Express, MySQL, Sequelize, AWS Cognito, Lambda, SQS, S3

Full Stack Developer - Humanitas University (Transfer Portal)

Summary: A digital portal for managing student transfer applications to Humanitas University, facilitating submissions, reviews, and documentation for students and university staff.
Responsibilities:

• Developed secure RESTful APIs for form submissions, user management, and file uploads.
• Implemented dynamic form rendering and validation on the frontend using React.
• Integrated AWS S3 for secure storage and retrieval of sensitive student documents with role-based access.
• Built admin dashboards for efficient application review and response.
• Ensured data privacy, input sanitization, and error handling across all layers.
• Collaborated directly with stakeholders to align functionality with university workflows.

Technologies: Node.js, Express, PostgreSQL, Mongoose, React.js, AWS S3

Full Stack Developer (ISMEA – Dynamic Form Management Platform)

Summary: A modular web application built on the Entando platform to manage and publish government subsidy forms dynamically, enabling non-technical users to configure complex form flows from a centralized backoffice.
Responsibilities:

• Built a backoffice system for admins to create, configure, and publish dynamic forms without developer intervention.
• Developed multi-step form flows in React for end-users, ensuring responsiveness on desktop and mobile.
• Integrated with CAS-based authentication system for secure access control and session handling.
• Handled high traffic loads and large-scale form submissions efficiently.
• Stored and processed structured form data in MongoDB for scalability and easy querying.
• Focused on validation, sanitization, and structured error responses for a smooth user experience.
• Collaborated with Entando’s architecture to ensure reusability, modularity, and compliance with standards.

Technologies: Node.js, Express, MongoDB, React.js, CAS (Central Authentication Service)

Full Stack Developer (Aida – Healthcare Marketing Portal)

Summary: A platform designed to manage marketing campaigns and outreach for healthcare services, featuring role-based dashboards, AI-assisted campaign suggestions, and performance analytics.
Responsibilities:

• Developed features for campaign creation, lead tracking, and segmented targeting.
• Created APIs using Node.js and Express with MySQL via Sequelize ORM.
• Integrated ChassureCat AI framework for smart content generation and engagement insights.
• Used Keycloak for secure authentication and role-based access control.
• Built responsive UIs with React.js including dashboards, analytics, and form builders.
• Optimized SQL queries and backend logic for real-time data handling.
• Ensured secure handling of healthcare-related data in compliance with best practices.

Technologies: Node.js, Express, PostgreSQL, Sequelize, React.js, ChassureCat AI Framework, Keycloak