Looking for a job

Ruslan Kolzov

@ruslankolzov

C#/.NET Backend Developer with 9+ years of experience in ASP.NET Core, REST APIs, SQL Server, integrations, and legacy modernization.

Russian Federation

Message

What I'm looking for

I'm looking for a fully remote C#/.NET Backend Developer role focused on ASP.NET Core, REST APIs, SQL Server, integrations, and modernization of existing systems. I'm also open to backend-focused full-stack roles using Angular or Vue.js.

C#/.NET Backend Developer with 9+ years of commercial experience building, maintaining, and modernizing web applications.

My main stack includes C#, .NET / ASP.NET Core, REST APIs, Microsoft SQL Server, ADO.NET, Entity Framework, LINQ, Git, and IIS.

I have worked on large enterprise systems as well as applications built from scratch. My experience includes backend and API development, database design, stored procedures, third-party integrations, OAuth authentication, legacy modernization, and production troubleshooting.

I have also worked with Angular and Vue.js and have practical experience with AWS.

I am primarily looking for remote .NET Backend Developer opportunities.

Experience

Work history, roles, and key accomplishments

C#/.NET Developer

XSUNT Corporation

Aug 2017 - Jul 2026 (8 years 11 months)

Developed and maintained enterprise web applications using C#/.NET.

• Spent approximately 5 years working on a large production CRM system for the insurance industry, maintaining existing modules and developing new frontend and backend functionality with ASP.NET MVC and WebForms.
• Built REST APIs and third-party integrations, including eFax and NetSuite, and worked with OAuth-based authenticatio

Angular LINQ Vue.Js Microsoft SQL Server ASP.NET MVC .NET IIS Git ADO.NET JavaScript SQL Gitlab C#Entity Framework REST APIs ASP.NET Core .NET Core

C#/.NET Developer

Freelance

Mar 2015 - Jul 2017 (2 years 4 months)

Developed and maintained websites and web applications.

• Built responsive websites from scratch using HTML, CSS, JavaScript, and Bootstrap.
• Installed and configured Umbraco CMS.
• Developed and extended website functionality using C#/.NET.
• Maintained projects based on custom CMS platforms, including page creation and updates, database changes, bug fixing, and ongoing support.