Muhammad Irzam KasyfillahSoftware Engineer

irzamkasyfillah@gmail.comlinkedin.com/in/irzam-kasyfillahIndonesia

Back End Developer with over three years of experience in building scalable applications using Go, NodeJS, and Typescript. Focused on driving innovation and delivering robust backend solutions to support business growth.

Work Experience

Sep 2023 - Nov 2025

Remote Backend EngineerCyza (California, USA - Remote)Responsibilities:

• Developed a payment integration test with third-party services
• Developed a notification system enabling user alerts based on various user actions
• Created cron scheduler to automate reminder-type of notifications
• Created and developed permission locking system across the app
• Maintained and fixed issue related to permission app
• Maintained and fixed issue related to CRM (Customer Relationship Management) app
• Created gRPC API endpoint to enhance data communication
• Implemented and created Go routines as required
• Integrated Back End and Front End code as required
• Created and implemented MySQL database migrations utilizing Goose
• Constructed unit tests, integration tests, and Playwright UI tests to ensure code quality
• Performed bug tracing and fixing

Tech Stack: Golang (gorilla/ mux), MySQL, Typescript, Playwright, Docker, Aerospike, Nats, Temporal

Oct 2022 - Jul 2023

Backend Engineer InternNOBI (Jakarta, Indonesia - Remote)Responsibilities:

• Built and maintained Back End microservices for robust performance
• Developed REST APIs to facilitate communication between services
• Connected various services using RabbitMQ message broker to enhance system integration
• Prepared Back End endpoints for the banner application
• Created detailed API documentation using Swagger

Tech Stack: NodeJS (ExpressJS), Golang (fiber), MySQL, RabbitMQ, Redis, Swagger

Personal Project

Android Mask DetectionTech Stack: Python, TensorFlow, Java

Data Mining - Clustering TBTech Stack: Python, FastAPI, NextJS