Andrey Chausenko

A sophisticated platform that I delivered as the principal cloud automation engineer leading a team and employing CI/CD, infrastructure as code, GitOps, and other modern principles.

Our platform was built on top of Amazon EKS, allowing us to develop and deploy complex infrastructure and software solutions across 30+ AWS accounts. It was also designed with a self-service principle in mind, allowing developers to quickly and conveniently deal with daily tasks, significantly shortening the software release cycle.

A set of scripts and templates that I delivered as the lead developer, allowing DevOps to quickly build, recreate, and manage AWS resources across multiple AWS accounts.

I built the project on top of Sceptre and AWS CloudFormation. It achieved a high level of code reusability and became an excellent tool for managing cloud infrastructure via code.

A Java Spring Boot service that I designed and implemented. As the lead developer on the live-to-video-on-demand (live2VOD) project, I created a new crucial feature for the sports streaming service, Kayo.

The service contained several REST API endpoints for synchronous invocation and a number of Netflix Conductor workflows implementing sophisticated asynchronous business scenarios. It was closely integrated with AWS through AWS SDK for Java. As a part of this project, I implemented a custom, highly configurable video asset transformation engine.

The project's main goal was to harvest videos from our live stream endpoints, process them, and make them available for users long after the live stream has ended.

A service that I executed to reduce code duplication and simplify future Conductor workflow development.

I implemented the service with several reusable generic Conductor tasks that can be fully configured via task input parameters. This included the send email task, extended HTTP request, some workflow logic tasks, and multiple tasks for accessing various AWS APIs.

A React-based, mobile-first web application and hybrid Android application that I fully designed and implemented.

Memz One is an easy-to-use hierarchical notepad, outliner, personal organizer, password manager, and Rich Text Editor. Its main features include real-time sync, unlimited hierarchy or tree structure support, Rich Text support via Markdown syntax, and a 256-bit AES encryption to protect information. It is also multiplatform, allowing it to work on most devices, and has easy import and export features.

A static website that I designed and implemented using Gatsby, React, CSS, and HTML5. This website's primary purpose is to advertise, showcase, and promote Memz One, a hierarchical notepad, outliner, personal organizer, password manager, and Rich Text Editor.

A simple and lightweight finite state machine (FSM) for Java. EasyFlow is my open source project that has 400+ stars on GitHub. It primarily emphasizes a simple and intuitive way of defining complex FSMs.

EasyFlow allows users to implement complex logic—while keeping their code simple and clean—and handle asynchronous calls with ease and elegance. With the tool, users can also avoid concurrency using an event-driven programming approach, prevent StackOverflow errors by avoiding recursion, and simplify the design, programming, and testing of complex Java applications.

A sample Android app that I created to illustrate how the EasyFlow FSM library can be used to simplify the design and implementation of asynchronous event-driven applications. Please refer to my EasyFlow Java Library project for more details.

An easy-to-use FSM for Node.js that I built, similar to EasyFlow for Java.

This library greatly simplifies the development of asynchronous event-driven applications. Thanks to its convenient hierarchical transition builder, the logic of complex applications remains clear and makes the user's application more manageable.

The use case for node-easy-flow is somehow similar to async.series() or async.waterfall(); only node-easy-flow is more suitable for handling complex, non-linear logic.

A library inspired by the Logstash grok filter, though it's not a port of it. I built this open source project, which now has 50 stars on GitHub.

This is a templating library that helps the reuse of existing regular expressions and the construction of new, more complex ones. The primary goal was to help parse and transform plain text logs into JSON objects—one line is to one object—based on the provided template.