Petro

Petro Krehel
.NET Backend / Software Engineer
Lviv, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)
LinkedIn: [open contact info](look above in the "contact info" section)
GitHub: github.com/Geomiruch

Professional Summary
.NET Software Engineer with commercial experience since 2022 in payment platforms, e-commerce, and
engineering software. Migrated vendor integrations from a monolith to dedicated .NET Core microservices and
implemented component factories and model validation. Skills include C#, ASP.NET MVC, EF Core, SQL, unit
testing, and code review.

Technical Skills
Backend: C#, .NET, .NET Core, ASP.NET MVC, Entity Framework Core (EF Core), REST API, LINQ,
AutoMapper, JSON
Data: SQL, PostgreSQL, MariaDB, Microsoft SQL Server (MS SQL Server), Redis, Elasticsearch
Testing & engineering: Unit testing, NUnit, Git, SOLID, design patterns, code review, refactoring, Postman,
Swagger
Additional: HTML, CSS, JavaScript, Mathcad, Tekla
AI-assisted development: Claude, ChatGPT for coding, debugging, testing, refactoring, and documentation

Professional Experience
.NET Software Engineer | Hotcode | Remote
Jan 2025 – Present
Automatic Connections: Engineering tool that automates connections between construction elements during
model design in Tekla. Technologies: .NET, C#, Mathcad, Tekla.
- Develop logic for new connection types and maintain existing connection functionality.
- Implemented a factory for component creation as part of the project architecture.
- Implemented validation of all trusses in the Tekla model before calculations run.
- Write unit tests, resolve bugs, refactor code, and perform code reviews.
Backend .NET Engineer | EveryMatrix | Lviv
Nov 2023 – Feb 2024
MoneyMatrix: Payment platform for online gambling and sports betting. Technologies: .NET Core, Entity
Framework Core, PostgreSQL, MariaDB.
- Migrated vendor integrations from a monolith to .NET Core microservices, with a dedicated service per vendor.
- Implemented new vendor integrations directly as standalone microservices.
- Wrote unit tests, resolved bugs, refactored code, and performed code reviews.
Full-Stack .NET Developer | Evinent GmbH | Remote
Mar 2022 – Apr 2023
Sulpak: E-commerce platform for electronics, appliances, and household goods. Technologies: ASP.NET MVC,
EF Core, MS SQL Server, Redis, Elasticsearch, HTML, CSS, JavaScript.
- Implemented pagination and enabled users to rate articles on the Sulpak platform.
- Optimized JavaScript code for the online store.
- Wrote unit tests, resolved bugs, refactored code, and performed code reviews.

Education
Master’s degree | Ivan Franko National University of Lviv | Sep 2022 – Dec 2023
Bachelor’s degree | Ivan Franko National University of Lviv | Sep 2018 – Jun 2022

Courses
.NET Summer School | EPAM | Jul 2021 – Oct 2021

Languages
English: B2 | Ukrainian: Native | Russian: Native