Position: Senior Backend Developer (node.js) or Engineering director
Category: Node.js
English level: upper
Years of experience: 11

With over 15 years of experience in coding and leading small teams, I've made contributions to well-known companies like Adidas AG and Siemens GmbH, as well as startups such as Joyn GmbH and influencer.com. I led the development team for the backend of data distribution in high-speed trains such as the ICE3 and ICE4, and also for an Adidas fitness tracker. I co-created the backend for influencer.com, a web application that facilitates effective searches and collaborations between brands and influencers. I am fluent in four languages: English, German, Ukrainian, and Russian. I am also a co-author of a book on Java programming language. I hold a Ph.D. in Computer Science from De Montfort University, UK.
08/2022 - 10/2022. Visiting Scientist, University of Applied Sciences Emden-Leer / remote / Emden, Germany, I successfully developed a pilot software system from scratch to a functioning solution. The system is a web application designed to digitize university administrative procedures.

09/2021 - 01/2022. Senior Backend Developer, Joyn GmbH / remote. The project aims to enhance and streamline the video processing pipeline utilizing technologies such as Kubernetes, VueJS, TypeScript, SQS, Kafka, and Python. The goal is to provide partners with access to S3, stabilize the current platform, and minimize dependencies on partner services. My main responsibility was to improve the code quality of the legacy system by writing unit tests and integrating testing into the CI/CD process. I also assisted with completing the remaining tasks and optimized CI/CD scripts related to Kubernetes.

11/2019 - 04/2022, Tech Lead, influencer.com/ London UK, Kyiv Ukraine. I was involved in the development of an integration platform connecting brands and influencers. My role included designing and building the backend architecture using GraphQL, microservices, and PostgreSQL. The implementation was done using Node.js with TypeScript and JavaScript ES6.

09/2017 - 04/2019. Backend Developer, OpenReply GmbH /  OBI-next, Germany / remote. I was responsible for developing the backend part of the heyOBI app. heyOBI is an iOS app offered by the multinational home improvement retailer, OBI GmbH, aimed at helping customers with DIY tasks at home. I focused on the backend architecture utilizing REST APIs, microservices, and event sourcing, and implemented the solution using Node.js (with ES6), Event Store, and MongoDB.

08/2015 - 07/2016. Lead Developer, Hays AG / Adidas AG. Herzogenaurach, Germany. I was involved in a comprehensive refactoring of an online tool designed to help users find teams for various projects, tasks, and events such as trips. I generated new requirements and designed a new architecture for the solution. The legacy code written in PHP was refactored into a MEAN stack-based solution, incorporating new features to enhance its functionality.

... for more information, please refer to my resume.