Gurgen Nersesyan

The kololak.com platform offers an online service that provides people to hire celebrities to create personalized videos. Inspired by cameo.com and targeting a specific market. Developed and launched within two months during global lockdowns caused by COVID-19.

This is a personal open-source project. The app is intended for small company IT departments to track inventory. It lets users define asset types and owners (employees who receive and return assets), record inventory movements, and get ownership reports.

Technologies used include Node.js, React, React-Redux, Material-UI, and PWA working within a MERN-like tech stack. PostgreSQL will be used for storing.
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With this project, I am looking to demonstrate my coding and architectural design skills.

During my early years of development, I contributed to designing the main concepts and implementing core modules of a platform to manage the entire lifecycle of telecommunication customers. The core modules included charging, service activation workflow management, and service provisioning.

I created the first MVP, which included the initial interface for middleware services, serving EPG and user authentication. Years later, I participated in the performance optimization process and the development of new features.

A multi-modular system that automates various processes of tax administration. I participated in the development of core architecture and development of separate modules, including:
• tax liabilities calculation
• document management
• integration with other governmental entities
• risks assessment by data cross-checking
• cash register machines data collection

I was primarily involved in recovering the source code of the legacy software and enhancing its performance. Additionally, I set up the custom build deployment (CI/CD) pipeline and contributed to the development of the planning and contract management extension.

This project involved creating a mobile application for Buy.am couriers. The app, developed using Expo/React Native, enabled couriers to share their availability and location and track orders and earnings.

As a contractor, I leveraged my skills in React Native, Expo, and GitHub to develop a user-friendly and efficient app. I was responsible for the app's coding, testing, and deployment, ensuring it met the company's requirements and user needs.

The impact of this project was significant. The app streamlined the delivery process, improved communication, and increased couriers' efficiency. This resulted in a more organized delivery system, leading to better customer satisfaction and higher courier earnings.

This project involved enhancing Buy.am's order management system. The objective was to streamline the process of managing couriers and order deliveries through a back-office platform.

The primary issue addressed was the inefficient dispatching and management of delivery tasks, which caused delays and affected the overall performance of the delivery system.

My role as a contractor involved using my skills in React Native, CI/CD, React, DevOps, Expo, Express.js, GitHub, Node.js, and team leadership. I used a JavaScript stack and real-time web sockets to develop a system that improved the dispatch of delivery tasks to couriers.

The product was collecting telemetry data for contraction smart hard hats, sharing their telemetry data every second. Data was monitored/analyzed and shown on a dashboard or real-time construction sitemap.

I joined the project with the primary goal of optimizing performance. We spent a month developing a stress test tool that would simulate high load and reveal bottlenecks. Within the next few months of refactoring and profiling, we achieved significant performance improvement.

We achieved 60 times more simultaneous online users being online on the same hardware and 200 times shorter event processing latency.