Денис

CO NTACT
Denys Hotsuliak
[open contact info](look above in the "contact info" section)
Backend .NET Developer
✉ [open contact info](look above in the "contact info" section)

Vinnytsia, Ukraine SUMMARY

Backend .NET Developer with 5+ years of commercial experience building
LANGUAGES scalable web applications and microservices. Experienced in designing backend
architecture from scratch, RESTful API design, CI/CD pipelines, and cloud
Ukrainian — Native infrastructure (AWS, Azure). Strong expertise in distributed systems: AWS,
English — Intermediate Apache Kafka, KSQL, RabbitMQ, Redis, ElasticSearch. Hands-on experience with
microservice architecture and modern design patterns.

KEY SKILLS
WORK EXPERIENCE
Language / Platform: C#, .NET,
Backend .NET Developer — NDA Project 09/2025 – 04/2026
ASP.NET Core, .NET Aspire
C#, .NET 10/8, ASP.NET Core, .NET Aspire, Entity Framework Core, Docker, GitHub Actions,
Architecture: Microservices, REST Microservices

API, Clean / Onion Architecture, Designed and developed the backend architecture from scratch, ensuring a
DDD, CQRS scalable and maintainable foundation
Built robust RESTful APIs handling core business logic and communication
ORM / Data: Entity Framework
between system components
Core, Dapper, ADO.NET
Resolved critical bugs and maintained test coverage with unit/integration
Databases: PostgreSQL, MS SQL, tests
MongoDB, Redis
Backend .NET Developer — Rapnet 06/2021 – 08/2025
Messaging: SQS, Apache Kafka,
C#, ASP.NET Core, MSSQL, PostgreSQL, ElasticSearch, Redis, AWS, Apache Kafka, KSQL,
KSQL, RabbitMQ CronJobs, Git

Search: ElasticSearch Extended and refactored core platform functionality to improve
maintainability
Cloud: AWS (Lambda, SQS, SNS,
Delivered new features aligned with customer requirements and the product
S3, EC2, RDS), Microsoft Azure
roadmap
DevOps: Docker, CI/CD (GitHub Resolved critical bugs and maintained test coverage with unit/integration
Actions, Azure DevOps), Ansible, tests
Git
Full Stack .NET Developer — Medical Insurance Solution (USA clinics)
Other: Quartz.NET, OOP/SOLID, 02/2021 – 06/2021
Agile, JIRA, Trello C#, ASP.NET Core, Quartz.NET, Redis, RabbitMQ, React JS, Redux, HTML, CSS, SCSS, MSSQL,
Git, Jenkins

Implemented web scrapers for aggregator sites — scanning and parsing
PERSONAL Q UALITIES
structured data
Integrated a caching layer to improve application performance and reduce DB
Strong communication skills, easily
load
establish contacts with people
Developed background synchronization jobs for data consistency across
Energetic, reliable, result-oriented
services
Fast learner, self-education ability
Delivered new features across the full stack (backend API + frontend
integration) and fixed bugs

DevOps Engineer — NDA Project 11/2019 – 11/2020
Azure DevOps, CI/CD pipelines, Ansible, Linux

Provided user support and assisted with software deployment across Dev, QA,
and Prod environments
Created CI/CD pipelines
Automation & configuration using Ansible

EDUCATION

Vinnytsia National Technical University
Bachelor's Degree, Information Systems and Technologies, 2019 – 2023