Open to opportunities

Serhii Korol

@serhiikorol

Message

Seasoned .NET/C# full-stack engineer focused on cloud and DevOps.

Ukraine

Message

What I'm looking for

I seek senior engineering roles where I can build scalable .NET/Angular systems, adopt cloud/DevOps practices, mentor teams, and work on impactful projects with growth and knowledge-sharing opportunities.

I am a seasoned Software Engineer with over seven years of experience who transitioned into a full-stack developer specializing in .NET/C#, Angular, JavaScript and TypeScript. I broaden my skill set into cloud computing and DevOps, with hands-on work in Azure, Docker and Kubernetes.

I've built new projects from scratch and contributed to large-scale platforms — including e-learning, e-commerce and document workflow systems — delivering backend .NET features, frontend Angular improvements, performance optimizations and migration work. I also implemented signature processing, PDF and encryption solutions, and enhanced platform scalability and reliability.

In addition to development, I teach and mentor developers through webinars, one-on-one lessons and a technical blog with an active subscriber community. I take pride in improving curricula, leading technical improvements and sharing practical knowledge while continuing freelance and consulting work.

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Experience

Work history, roles, and key accomplishments

Current

Teacher / Mentor / Consultant

Current

CyberBionic Systematics

Jun 2025 - Present (5 months)

Conduct webinars, one-on-one lessons, and consultations; contribute to curriculum development and mentor developers to improve learning outcomes.

.NET C++Angular Mentoring Curriculum Development Webinars Technical Coaching

Current

Freelance Developer

Current

Freelance

May 2025 - Present (6 months)

Deliver one-time and short-term development projects for international clients, resolving technical issues, improving functionality, and collaborating with cross-functional teams to ensure quality.

C++.NET Angular

Software Engineer

Document.Online

Jun 2023 - Nov 2023 (5 months)

Developed a new e-document project from scratch and contributed to three related services, implementing a graphical document signature feature and modernizing PDF processing to improve reliability and scalability.

C++.NET Angular Azure

Software Engineer

EPAM Systems

Jan 2022 - Sep 2023 (1 year 8 months)

Contributed backend .NET development for a large-scale learning platform, enhancing course management features, adding personalized notifications, and implementing e-commerce and loyalty program functionality.

C++

Software Engineer

GlobalLogic

Jul 2021 - Dec 2021 (5 months)

Implemented new features and optimized database performance for a media platform connecting video creators with streaming services, improving data handling and system efficiency.

C++.NET SQL Stored Procedures

.NET Developer

SmartTender

Nov 2019 - Jun 2021 (1 year 7 months)

Maintained and enhanced an online auction platform for government property, migrated parts of the system from a monolith, optimized Elasticsearch filters, and wrote SQL scripts to support platform scalability.

C++.NET SQL Elasticsearch

Fullstack Developer

Fernir

Feb 2019 - Nov 2019 (9 months)

Developed an educational application and implemented an MVP from scratch, working across frontend and backend to deliver multiple small projects and features.

Angular .NET TypeScript HTML CSS

QA Tester

Digivante

Oct 2016 - Dec 2018 (2 years 2 months)

Performed manual testing of web and mobile applications for retail and e‑commerce clients, identifying critical bugs for major brands and contributing to high-speed managed testing deliveries.

Manual Testing QA Processes Web Testing Mobile Testing