Костянтин

KOSTYANTYN PROFILE
NOVYTSKYI Full Stack .NET Developer with 5 years of commercial
Full Stack .NET Developer experience in e-learning products and internal business
systems. I work across backend and frontend
CONTACTS development, with a stronger focus on .NET backend
Phone: [open contact info](look above in the "contact info" section) services, data flows, integrations and long-lived business
logic. I am used to supporting production systems,
Email: [open contact info](look above in the "contact info" section)
clarifying requirements and improving existing
City: Kyiv, Ukraine functionality while keeping stable product behavior.

CORE TECHNOLOGIES WORK EXPERIENCE
- C#, .NET 6-10, ASP.NET Core, Web API Full Stack Developer | Aptem UK Ltd | 5 years
- MS SQL Server, Entity Framework E-learning products and internal business systems
- Angular, TypeScript - Developed and maintained ASP.NET Core services and
Angular features for e-learning product workflows.
- Redis, SignalR
- Azure, Docker, Bicep, CI/CD - Built and improved REST APIs, business workflows,
module integrations and data-processing flows.
- REST APIs, external APIs
- Worked with multi-service product areas and modular
SYSTEMS EXPERIENCE monolith components using CQRS and Onion
- modular monolith and multi-service systems Architecture approaches.

- Service Bus and async message processing - Implemented asynchronous communication with
Service Bus for event-driven processing and service
- production support for long-lived products
integration.
- requirements clarification and business logic validation
- Worked with SQL Server for data analysis, result
EDUCATION validation, query troubleshooting and performance-
Igor Sikorsky Kyiv Polytechnic Institute oriented improvements.
Master's degree - 122 Computer Science, 2026 - Delivered Angular / TypeScript UI changes for forms,
Igor Sikorsky Kyiv Polytechnic Institute tables, filters and workflow screens integrated with
Bachelor's degree - 126 Information Systems and backend APIs.
Technologies, 2024 - Investigated production issues using logs, database
state and API behavior; supported fixes in long-lived
LANGUAGES
functionality.
- Ukrainian - fluent
- Participated in CI/CD, Azure deployment support,
- English - Intermediate
environment configuration, code reviews and technical
discussions.

ADDITIONAL
- Master thesis focused on automatic processing and
summarization of large text documents using modern
AI-based approaches.

- Interested in machine learning and practical AI
applications.

- Comfortable maintaining legacy .NET Framework / MVC
5 components when they are part of a broader .NET
product ecosystem.