I am a Senior Full Stack Engineer with over 10 years of experience and a Master’s degree in Computer Science. I have successfully led distributed teams delivering high-scale systems across ecommerce, fintech, and travel domains, handling platforms with over 1 billion annual visitors. I specialize in transforming monoliths into microservices and micro frontends, utilizing technologies like JavaScript, TypeScript, Java, Python, React, Angular, Vue.js, Node.js, Spring, AWS, and Azure. I am experienced in applying AI technologies including NLP, large language models, and retrieval-augmented generation pipelines to enhance user experiences. My proven impact includes achieving 99.95% uptime, tripling performance, and 50% cost savings. I have a strong focus on architecture, developer efficiency, and team mentorship to create robust and scalable solutions.

Maksym Krugliachenko

I am a Senior Full Stack Engineer with over 10 years of experience and a Master’s degree in Computer Science. I have successfully led distributed teams delivering high-scale systems across ecommerce, fintech, and travel domains, handling platforms with over 1 billion annual visitors. I specialize in transforming monoliths into microservices and micro frontends, utilizing technologies like JavaScript, TypeScript, Java, Python, React, Angular, Vue.js, Node.js, Spring, AWS, and Azure. I am experienced in applying AI technologies including NLP, large language models, and retrieval-augmented generation pipelines to enhance user experiences. My proven impact includes achieving 99.95% uptime, tripling performance, and 50% cost savings. I have a strong focus on architecture, developer efficiency, and team mentorship to create robust and scalable solutions.

Available to hire

I am a Senior Full Stack Engineer with over 10 years of experience and a Master’s degree in Computer Science. I have successfully led distributed teams delivering high-scale systems across ecommerce, fintech, and travel domains, handling platforms with over 1 billion annual visitors. I specialize in transforming monoliths into microservices and micro frontends, utilizing technologies like JavaScript, TypeScript, Java, Python, React, Angular, Vue.js, Node.js, Spring, AWS, and Azure.

I am experienced in applying AI technologies including NLP, large language models, and retrieval-augmented generation pipelines to enhance user experiences. My proven impact includes achieving 99.95% uptime, tripling performance, and 50% cost savings. I have a strong focus on architecture, developer efficiency, and team mentorship to create robust and scalable solutions.

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Experience Level

Expert
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Expert
Expert
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Expert
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Language

English
Advanced
German
Intermediate
Ukrainian
Fluent
Russian
Fluent

Work Experience

Senior Full Stack Engineer at Beyond Beauty Club
February 1, 2025 - August 18, 2025
Led web app development ensuring 99.95% uptime and high performance using React and Java. Designed a fast-loading web architecture with 2s load time. Integrated headless CMS, AI video generation, and AI skin analysis. Optimized caching with CDN and Redis. Automated CI/CD with GitHub Actions.
Lead Software Engineer at Adidas via Ciklum
August 1, 2023 - August 18, 2025
Transformed a monolithic app into a microservice architecture using React, Node.js, .NET, and Go. Utilized AWS Lambda to catch Kafka events reducing AWS costs by 50%. Configured Jest and Playwright tests achieving 90% coverage. Built Node.js middleware boilerplate for company-wide use. Led team delivering projects serving over 1 million users.
Senior JavaScript Developer / Software Consultant at Ciklum
August 1, 2023 - August 18, 2025
Built micro frontend (MFE) with Web Components, reducing load time by 50%. Set up CI/CD pipelines for MFE deployment and developed a bridge for seamless MFE integration.
Senior JavaScript Developer at Ryanair
May 1, 2020 - August 18, 2025
Developed MFE solutions handling over 1 billion sessions annually. Used AI to optimize performance based on user behavior. Migrated a monolith to microservices achieving 3× performance improvement. Set up AWS CI/CD pipelines for automated deployment. Configured test environments for efficient workflows.
Senior Backend Developer at SoftServe
September 1, 2017 - August 18, 2025
Built microservices architecture with Node.js (Express & NestJS). Used Azure Functions to process millions of mobile numbers efficiently. Created service templates to streamline development and optimized MSSQL queries for high-volume transactions. Configured test environments to improve workflows.
JavaScript Developer at Ryanair
May 1, 2020 - August 18, 2025
Delivered large application within strict deadlines. Mastered and integrated modern frameworks. Ensured complete test coverage for all business logic.
Front-end and Web Developer at SoftServe
September 1, 2017 - August 18, 2025
Created, modified, and maintained websites for the marketing department. Developed and enhanced Single Page Applications (SPAs) and built SPAs for R&D initiatives.
Legacy modernization lead at Ryanair
January 1, 2021 - August 18, 2025
Led legacy modernization project transitioning to a micro front-end (MFE) architecture for independent deployments, improving maintainability and availability. Technologies used: Angular, AWS, JavaScript, TypeScript, HTML, CSS, SASS, Java, GraphQL, Jest.

Education

Master's degree at Lviv Polytechnic National University
January 1, 2018 - January 1, 2019
Bachelor at Dnipropetrovsk National University of Railway Transport
January 1, 2006 - January 1, 2011

Qualifications

Swiss Work Permit
January 11, 2030 - August 18, 2025

Industry Experience

Software & Internet, Financial Services, Travel & Hospitality, Consumer Goods

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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