Kalkidan Derso

. . Kalkidan Derso Demisse- - in/kalkidan-derso-6b7a3a226 SUMMARY Fullstack developer with over 4 years of experience specializing in JavaScript, TypeScript, and Python. Proven expertise in building robust backend microservices using Node.js, Docker, and AWS. Skilled in developing Single Page Applications (SPAs) using React and Next.js, and integrating advanced APIs like Puppeteer and Dialogflow. Experienced in database management (MySQL, PostgreSQL, SQLite, MongoDB) and system administration. Proficient in implementing CI/CD pipelines and leveraging agile collaboration tools like Trello and Jira. Adept at software optimization, with excellent communication, leadership, and teamwork skills. EXPERIENCE Freelance Fullstack Developer (MERN) October 2024 - Present, USA Chora • Developed robust web automation solutions to improve data collection and streamline backend processes for business intelligence. • Implemented multi-stage automated workflows, optimizing performance for large-scale data processing tasks. • Delivered fullstack solutions across frontend and backend, ensuring high code quality, security, and performance while meeting tight project deadlines. Fullstack Developer (MERN) January 2024 - Present, texas, USA Blueclerk • Developed and maintained backend microservices for a cloud-based asset management platform using Node.js and Express. • Integrated MongoDB to ensure scalable and efficient data management for large datasets. • Built RESTful APIs supporting a React-based frontend, handling user authentication, equipment tracking, and notifications. • Engineered software solutions that allowed customers and technicians to scan equipment in the field, view maintenance history, and optimize task completion times. • Deployed applications on AWS using Docker and implemented CI/CD pipelines for automated deployments. Fullstack Developer October 2022 - Present, Addis Ababa, Ethiopia eTech S.C. • Built backend microservices using Node.js and integrated real-time communication with Apache Kafka and Socket.io. • Managed PostgreSQL databases, implementing Redis caching for performance optimization. • Developed a React-based frontend and managed production environments with PM2. Backend Developer September 2023 - June 2024, Hong Kong Synque Limited • Developed and deployed backend services and APIs for an e-commerce platform. • Containerized backend services using Docker for enhanced development, testing, and production consistency. • Managed infrastructure on AWS EC2 instances, optimizing resource usage in collaboration with DevOps teams. Fullstack Developer Nicomas Digitals January 2021 - February 2022, Addis Ababa, Ethiopia • Developed a modern e-commerce platform using Next.js, Tailwind CSS, Express.js, and Sanity.io. • Focused on frontend design and backend functionalities. PROJECTS CobatShirts E-Commerce Website Nicomas Digitals • Developed a modern e-commerce platform using Next.js, Tailwind CSS, and Express.js. • Designed and integrated a custom content management system (Sanity.io) for efficient content updates. Fleet Management System eTech S.C. • Developed a user-friendly interface and integrated real-time GPS and sensor data into the system for fleet tracking. • Collaborated with backend teams to ensure seamless data flow and real-time tracking capabilities. Social Media Platform eTech S.C. • Engineered Node.js microservices with PostgreSQL. . . • Enhanced performance with Redis caching and Apache Kafka. Ride Hailing Application eTech S.C. – Addis Ababa, Ethiopia • Designed architecture and backend microservices for a ride-hailing app, integrating APIs for payment (TeleBirr) and location services (Google Maps). E-commerce application Development Synque Limited • Developed backend APIs for an e-commerce platform, managing deployment on AWS EC2 and containerizing with Docker. • Implemented automated deployments using CI/CD pipelines, improving efficiency and deployment speed. Social Media Platform eTech S.C. – Addis Ababa, Ethiopia • Developed a scalable social media platform using Node.js, with a focus on efficient backend microservices architecture. • Engineered real-time communication features using Socket.io for instant messaging, notifications, and live interactions. • Managed PostgreSQL databases, implementing Redis caching to improve response times and ensure scalability under high traffic. • Designed and built APIs for user management, posts, comments, and media uploads, ensuring robust security and data integrity. • Optimized platform performance by leveraging Apache Kafka for real-time data streaming and event-driven architecture. Web Automation with Puppeteer Chora – USA • Developed sophisticated web automation solutions using Puppeteer for data extraction and process optimization. • Implemented efficient and scalable backend processes to handle large datasets and streamline data analysis. • Designed workflows to automate repetitive tasks, improving system performance and reducing manual effort. Asset Management Platform Blueclerk – Texas, USA • Developed software that allows customers and technicians to scan equipment for work history tracking and time-saving task automation. • Integrated with MongoDB for handling large datasets and provided seamless backend support using Node.js. • Designed a field interface enabling real-time updates and equipment tracking. EDUCATION Bachelor of Science in Software Engineering Addis Ababa Science and Technology University • Addis Ababa, Ethiopia • 2021 SKILLS SKILLS Languages: JavaScript, TypeScript, Python, Java Frontend Frameworks: React, Angular, Next.js, React Native Backend Frameworks: Node.js, Django, Vert.x Databases: MySQL, PostgreSQL, SQLite, MongoDB Cloud & Servers: AWS, DigitalOcean, Docker, Nginx, Firebase, Apache Data Science: NumPy, Pandas, Matplotlib, Scikit-learn Tools: Redis, Kafka, Socket.io, GIT, Trello, Jira, PM2, Puppeteer Content Management: Sanity.io, Directus UI Libraries: jQuery, Bootstrap, Material-UI, Tailwind CSS, Chart.js, Styled Components Additional Skills: Dialogflow, CI/CD, Web Scraping, Automation, API Development, External API Integration • Expertise • Fullstack Development • Backend API Design and Development • External API Integration (including Web Automation) • Frontend Development • Cloud Infrastructure (AWS) • CI/CD Pipeline Implementation • Software Performance Optimization • Troubleshooting and Debugging • Leadership and Team Collaboration