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I’m Valerii Abakumov, a Senior Software Engineer with 12+ years of experience delivering scalable backend and full-stack solutions. I specialize in C#, .NET Core, ASP.NET Core, and modern JavaScript frameworks, and I thrive when turning complex problems into robust services and intuitive user experiences. I enjoy working with distributed teams, applying TDD, and continuously improving code quality and system reliability. I’m passionate about cloud and AI-assisted development, mentoring teammates, and exploring new technologies to stay ahead in a fast-changing landscape. I value clean architecture, strong collaboration, and delivering value to users through reliable software and thoughtful engineering practices.…I’m Valerii Abakumov, a Senior Software Engineer with 12+ years of experience delivering scalable backend and full-stack solutions. I specialize in C#, .NET Core, ASP.NET Core, and modern JavaScript frameworks, and I thrive when turning complex problems into robust services and intuitive user experiences. I enjoy working with distributed teams, applying TDD, and continuously improving code quality and system reliability. I’m passionate about cloud and AI-assisted development, mentoring teammates, and exploring new technologies to stay ahead in a fast-changing landscape. I value clean architecture, strong collaboration, and delivering value to users through reliable software and thoughtful engineering practices.

Valerii Abakumov

Full Stack Developer, Back-End Developer, AI Strategy Consultant

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I’m Valerii Abakumov, a Senior Software Engineer with 12+ years of experience delivering scalable backend and full-stack solutions. I specialize in C#, .NET Core, ASP.NET Core, and modern JavaScript frameworks, and I thrive when turning complex problems into robust services and intuitive user experiences. I enjoy working with distributed teams, applying TDD, and continuously improving code quality and system reliability. I’m passionate about cloud and AI-assisted development, mentoring teammates, and exploring new technologies to stay ahead in a fast-changing landscape. I value clean architecture, strong collaboration, and delivering value to users through reliable software and thoughtful engineering practices.…I’m Valerii Abakumov, a Senior Software Engineer with 12+ years of experience delivering scalable backend and full-stack solutions. I specialize in C#, .NET Core, ASP.NET Core, and modern JavaScript frameworks, and I thrive when turning complex problems into robust services and intuitive user experiences. I enjoy working with distributed teams, applying TDD, and continuously improving code quality and system reliability. I’m passionate about cloud and AI-assisted development, mentoring teammates, and exploring new technologies to stay ahead in a fast-changing landscape. I value clean architecture, strong collaboration, and delivering value to users through reliable software and thoughtful engineering practices.

Available to hire

I’m Valerii Abakumov, a Senior Software Engineer with 12+ years of experience delivering scalable backend and full-stack solutions. I specialize in C#, .NET Core, ASP.NET Core, and modern JavaScript frameworks, and I thrive when turning complex problems into robust services and intuitive user experiences. I enjoy working with distributed teams, applying TDD, and continuously improving code quality and system reliability.

I’m passionate about cloud and AI-assisted development, mentoring teammates, and exploring new technologies to stay ahead in a fast-changing landscape. I value clean architecture, strong collaboration, and delivering value to users through reliable software and thoughtful engineering practices.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Russian

Fluent

Work Experience

Senior Full-stack Developer (C# .NET & Angular, B2B) at Eurofins

November 1, 2024 - Present

Developed and enhanced internal CRM system for a multinational company. Designed and implemented new .NET Core services and Angular components. Managed builds, releases, and dev environments in Azure. Conducted code reviews and collaborated within a distributed Scrum team. Leveraged AI devtool (GitHub Copilot) for task implementation and development acceleration.

Senior Developer (C# .NET, B2B) at SD Technologies, Inc.

July 1, 2022 - November 1, 2024

Developed cloud POS system used across multiple US states. Built and maintained microservices and monolithic modules in .NET 7. Improved system reliability by addressing technical debt and resolving production incidents. Implemented unit and functional testing (FluentValidation, xUnit). Collaborated via Jira/Confluence and managed releases in GitLab CI/CD.

Head of .NET Department / .NET Resource Manager (Part-time) at SibDigital

July 1, 2021 - July 1, 2022

Hired, onboarded, and managed mid/senior/lead developers. Created internal .NET code style guide and organized knowledge-sharing sessions. Grew department from 5 to 14 developers aligned with project expansion.

Senior .NET Developer at SibDigital

June 1, 2019 - July 1, 2022

Developed backend for 'Digital Repairs' and 'Digital Rounds' mobile applications used across 25 factories. Migrated backend from monolithic to microservices with gRPC and RabbitMQ. Resolved memory leaks and optimized performance of distributed services. Advocated TDD and integrated automated tests into CI/CD pipelines. Improved architecture using CQRS and .NET Core built-in tools.

Full-stack Developer (.NET, React) at Alfa-Bank

May 1, 2017 - June 1, 2019

Built Commission Management System enabling tariff modifications. Designed backend with .NET Core, EF Core, and SQL Server; frontend with React/Redux. Introduced Jenkins CI pipelines and shared libraries for ~30 developers. Increased test coverage from 0% to ~45% through unit and integration testing. Delivered in-house training on .NET testing practices.

Full-stack Developer (.NET, ASP.NET MVC) at LifeIT, LLC

November 1, 2014 - May 1, 2017

Developed multiple customer solutions in .NET Framework, ASP.NET MVC, WPF, and Windows Forms. Implemented SOLID principles, CI, and Git version control.

C# .NET Developer at Telekom Service IT

June 1, 2013 - November 1, 2014

Developed desktop and web applications with WinForms, WPF, Entity Framework, and SQL Server. Gained practical experience with source control and regex parsing.