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OLEG KHYTREN
Full-stack .NET Developer

[open contact info](look above in the "contact info" section)
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хитрень-080491203/

I'm .NET Developer with 9 years of experience. I started learning programming parallel to my study in the
university, and now I work and enjoy it. My goal is to find a team where I can grow as a specialist and
overcome new challenges. I am an open, responsible and sociable person.

EDUCATION HOBBIES
Economy specialist, Ivan Franko National Programming
University of Lviv, Lviv Guitar playing
January 2006 – January 2010 Cooking

I like economy, but my love is programming. SKILLS
AI prompt engineering
WORK EXPERIENCE
AI context engineering
Freelance, Self entrepreneur
February 2024 – present AI Agentic engineering

I have done a bunch of tasks on this position. The most AI Skills
challenging are producing a whole plan for the system using
DDD approach and developing a backend part of a C#
microservice.
ASP.NET MVC
VARTEQ Inc., backend developer
August 2022 – December 2023
EnityFramework Core
I was working for a mortgage company. We were switching
and redoing the platform from the outdated .NET LINQ
Framework to a new solution that was based on the new
.NET Core. The codebase was enormous, and I liked it. A DDD
robust solution produces opportunities to grow as a
developer. We apply the DDD approach and microservices CSS3
architecture. I was the one who developed the whole
microservice from scratch. I used there mediator, builder, HTML5
chain of responsibility, composite, strategy and many other
patterns. Also I was covering one of the microservices with JavaScript
tests and proposed a new approach to write the tests for a
complex part of the codebase like the one I was working on. Angular
My work had a solid impact on the project.
React
A significant technical challenge with SQL was to migrate the
data from the outdated solution to the new one. It took a lot

of time, because you should be very precise and double- Blazor
check everything manually each time you proceed with an
updated SQL script, because it would have a powerful impact MySQL
on the production version of the project. It was definitely
tough. SQL

SoftServe, Full Stack Developer Redis
March 2021 – August 2022
This is a really powerful place where you can feel how your ElasticSearch
brain becomes stronger. Agile / Scrum methodologies and
other cool and powerful processes give me a different vision Kubernetes
on how to make a strong and stable company, how to
organize the work of over 50 people. Docker

My role at the healthcare company was just a Developer Azure
where I did some usual programming stuff, like fixing bugs,
developing a website, moving on with Agile, closing stories Design Patterns
and so on. We were developing a substantial marketplace on
this project with a massive codebase. That's where I first Microservices
worked with ElasticSearch, MongoDB, Nexus and many other
technologies. We had MySQL and MSSQL databases and xUnit
were switching from MySQL to MSSQL. We have used
ElasticSearch to speed up searching. TDD

RemSoft.Dev, Full Stack Developer CQRS
January 2019 – June 2020
I’ve worked on many outsourced companies. From big old Clean Architecture
projects based on .NET Framework and AngularJS to modern
startups based on Blazor WASM and .NET 5. That was an Ansible
amazing experience. I'd worked with big CRM systems, post-
business, self-entrepreneurs. We had clients from Australia, MongoDB
Austria, UK, USA, and Israel. There was big stack of different
technologies like ADO.NET, EntityFramework, AngularJS, Git
Blazor, Azure, GCP, Bootstrap, XUnit and many others.
ADO.NET
Pet project, Self entrepreneur
April 2017 – January 2019 Postman
Project was called AMZSupports. I worked to ensure a
positive and hassle-free Amazon Marketplace trader RabbitMQ
experience. Project includes:
.NET
- Google Chrome browser extension;
- Data parser from Amazon Marketplace and Ebay (.NET +
REST API
Selenium);
- Web-site based on ASP.NET MVC + Web API;
Azure Functions
- Integrations with Amazon API;
- Integrations with Google Sheets and Google Drive;
Azure SQL

OOP

SOLID

KISS

AWS

PostgreSQL

Multithreading

Agile

Scrum

Hangfire

MassTransit

Integration tests

SAST

SCA

k6

NBomber

Performance tests

Metrics

Loki

Grafana

Tempo

Prometheus