Roman

Roman Ishchenko
Senior .NET Developer
Senior .NET Developer with 6+ years of commercial experience building enterprise applications on the Microsoft stack.
Specialized in legacy system modernization, REST API design, and full-stack development across healthcare, government,
and pharma domains. Actively use AI tools (Claude, GitHub Copilot, OpenAI API) as part of my daily engineering workflow.
Strong focus on code quality, performance optimization, and delivering maintainable solutions in Agile teams.

Technical Skills
• Languages: C#, T-SQL, JavaScript, TypeScript, Python, Scala
• Frameworks: .NET Framework & Core, ASP.NET MVC/Web API, EF/EF Core, ADO.NET, WCF, LINQ, WPF, Blazor,
Razor Pages
• Web: HTML5, CSS3, Bootstrap, jQuery, Angular, React
• Databases: MS SQL Server, PostgreSQL
• AI & LLM: OpenAI API (ChatGPT), Claude, GitHub Copilot, LLM-assisted development workflows
• Data Engineering: Apache Spark, Airflow, Kafka, Azure Databricks
• Cloud: Microsoft Azure
• CI/CD & DevOps: Jenkins, Octopus, Docker
• Testing: NUnit, xUnit, MSTest, StyleCop, Selenium WebDriver
• Tools: Visual Studio, VS Code, SSMS, Postman, Fiddler, Swagger, Jira, Confluence, Git, SVN

Experience

Outsourcing Company (NDA) | 12.2019 — Present
All projects delivered within one outsourcing company, across multiple enterprise clients.

Pharmaceutical Records Processing System (NDA) 05.2025 — 08.2025
Role: Senior Software Engineer | Domain: Pharma
• REST API design, versioning, and documentation
• In-depth SQL query analysis, index tuning, and schema optimization
• Pharmaceutical records processing and integration workflows
• Full-stack feature development, code review, task estimation
Stack: C#, .NET Core, ASP.NET Core Web API, MS SQL Server, Entity Framework Core

State Real Estate Registry System (NDA) 09.2025 — 05.2026
Role: Senior Software Engineer | Domain: Government
• WPF desktop application development for government real estate registry
• Large-scale technology migration and architecture modernization
• LLM-assisted codebase refactoring and architecture redesign using OpenAI API
• AI-driven test generation and coverage improvement
• Code review, requirements clarification
Stack: C#, .NET Core, WPF, OpenAI API (ChatGPT)

Health Care Records Management System (NDA) 05.2024 — 04.2025
Role: Senior Software Engineer | Domain: Healthcare
• Hospital system for managing clinical actions, medications, and medical entities
• Multi-framework web UI development and maintenance (Razor Pages, Blazor, React, vanilla JS)
• Framework version upgrades and cross-framework integration
• Full-stack feature development, code review, bug fixing
Stack: C#, .NET Core, ASP.NET Core, EF Core, MS SQL Server, Razor Pages, Blazor, React, JS

Pharmaceutical Market Data Collection & Analysis System (NDA) 07.2020 — 03.2021
Role: Middle Software Engineer | Domain: Pharma
• Cloud-hosted web scraping platform targeting pharmaceutical websites
• Selenium-based scrapers distributing data to databases, cloud buckets, and API endpoints
• CI/CD pipeline setup and management for scraper orchestration
 • Azure cloud infrastructure, bug fixing, code review
Stack: C#, .NET Core, ASP.NET MVC, MS SQL Server, EF Core, Azure, Selenium WebDriver

Enterprise LMS System (NDA) 03.2021 — 05.2024
Role: Middle Software Engineer | Domain: EdTech
• Large-scale legacy e-learning platform for a major educational enterprise
• .NET framework upgrades and cross-version compatibility management
• GDPR compliance implementation and security hardening
• Feature development, bug fixing, code review, release management
Stack: C#, .NET Framework/Core, ASP.NET MVC, WebAPI, MS SQL Server, EF, WCF

Pet Care Management System (NDA) 12.2019 — 07.2020
Role: Junior Software Engineer | Domain: Pet Care
• Full-stack feature development, bug fixing, task estimation
Stack: C#, .NET Core, ASP.NET Core, EF Core, MS SQL Server, Angular

Education

Kharkiv National University of Radioelectronics | 2017
Bachelor's in Software Engineering

Languages
• English: C1 — Advanced (professional working proficiency)
• Ukrainian: Native