Raj

Software Engineer

Stratesfy • Vollzeit

Sep 2023 - Present • 2 yrs 8 mos

I worked at Stratesfy as a Full Stack Developer specializing in the MERN stack and React Native. During my time there, I was responsible for designing, developing, and maintaining scalable web and mobile applications. My role involved working across the full development lifecycle, from planning and architecture to deployment and maintenance. On the backend, I developed RESTful APIs using Node.js and Express.js, and managed databases using MongoDB, ensuring efficient data modeling and optimized queries. On the frontend, I built responsive and user-friendly interfaces using React.js, focusing on performance, maintainability, and modern UI/UX practices. In addition to web development, I developed cross-platform mobile applications using React Native, enabling seamless performance on both Android and iOS platforms. I integrated third-party APIs, implemented authentication systems, and ensured secure communication between frontend and backend services. I collaborated closely with designers, product managers, and other developers to deliver high-quality products on time. I also participated in code reviews, debugging, and performance optimization to improve application stability and scalability. Through this experience, I strengthened my skills in full-stack development, mobile app development, API integration, version control (Git), and agile development practices.

Freelancer

Fiverr • Freiberufler

Apr 2022 - Present • 4 yrs 1 mo

Full Stack Software Engineer with 4+ years of experience building scalable web applications, fintech systems, and enterprise platforms using React, Node.js, Laravel, and Python. I have worked on a fintech / international remittance system (confidential) where I developed secure financial workflows, integrated Plaid API for bank linking and verification, and implemented payment gateway integrations for transaction processing. My responsibilities included building JWT-based authentication, role-based access control (User/Admin/Agent), real-time transaction tracking, multi-currency support, secure API handling, and notification systems for transaction updates. I also focused on backend security, encryption of sensitive data, and ensuring system reliability for high-volume financial operations. I have also developed an enterprise employee management system featuring attendance tracking, leave management, employee onboarding, role-based permissions, and admin dashboards with analytics and CRUD operations. In addition, I have built multiple full-stack applications including secure authentication systems, admin dashboards, and e-commerce style platforms with cart, product management, and checkout flows. I specialize in RESTful API development using Node.js and Express with MySQL/MongoDB integration, along with responsive frontend development using React. My experience also includes machine learning projects involving data preprocessing, classification models, TF-IDF text processing, and deploying models using Flask APIs. I focus on writing clean, scalable, and production-ready code with strong emphasis on performance, security, and maintainability. I ensure clear communication and reliable delivery tailored to client requirements.