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Vladyslav Saienko

@vladyslavsaienko

Senior .NET developer at CHI Software, modernising enterprise portals and migrating legacy systems to cloud-ready services.

Slovakia

Message

What I'm looking for

I enjoy working in international teams on projects with active, ongoing development. I’m comfortable driving architecture discussions and working directly with stakeholders in Agile teams.

At CHI Software, I’ve worked on enterprise platforms for product distribution, HR and resources management, and construction equipment distribution. I’ve delivered country-specific business logic, optimised SQL queries, and moved parts of a large MVC application into purpose-built Blazor portals.

On a recycling data exchange platform, I led the rewrite of monolithic modules into microservices and built a data migration service. I also implemented authentication flows for multi-tenant portal access.

Earlier, at Morebis, I worked on a clinical decision support system, helping grow its platform from 4 to 19 microservices and migrating multiple services from .NET Framework to .NET Core. I’ve also mentored junior developers and taken part in architecture discussions with teams and stakeholders.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack .NET Developer

Current

CHI Software

Nov 2021 - Present (4 years 10 months)

Delivered features and fixes across release tracks spanning 16 countries, implemented complex business logic, optimized SQL queries, and migrated parts of a large MVC application to Blazor portals.

C#.NET Core Web APIs MediatR Entity Framework Core MS SQL Server Azure Azure DevOps Blazor Claude Code xUnit Moq

Middle Full Stack .NET Developer

Vilmate

Sep 2020 - Oct 2021 (1 year 1 month)

Reverse-engineered undocumented business logic in a large legacy codebase, implemented data migration pipelines, and accelerated critical SQL query execution by 30%.

C#.NET Framework .NET Core Web APIs MSSQL MVC HTML CSS JS Web Forms