Іван

Ivan Freiuk
Software Engineer
Software Engineer with over 7 years of experience in backend development using C#, .NET, and
cloud technologies (AWS & Azure). Proven ability to design scalable APIs, modernize legacy
systems, and automate infrastructure with tools like Terraform and Jenkins. Strong focus on clean
code, testing, and Agile delivery. Seeking to contribute to complex engineering challenges and
cloud-native solutions.

Experience
Jan 2020 - till now
EPAM Systems
Software Engineer
(World's leading provider of financial markets infrastructure -
Contact under NDA)
Developed new features using a microservices architecture to ensure scalability, reliability,
and maintainability, deploying to both cloud infrastructure and on-premise servers.
Phone Key Contributions:
[відкрити контакти](див. вище в блоці «контактна інформація»)
Collaborated with an international team, participating in planning and directly
Email communicating with clients to clarify requirements
[відкрити контакти](див. вище в блоці «контактна інформація») Provisioned AWS infrastructure using Terraform: created EC2 GitLab Windows runners
for Docker image builds and automated setup of SQS, SNS, Lambda, S3, and CloudWatch
Location Migrated CI/CD pipelines from Jenkins to GitLab, streamlining deployments and
Ukraine, Lviv improving delivery speed

Education
Built an internal admin UI using self-hosted Retool, improving usability for non-technical
team members
Sep 2016 - June 2020 Developed and maintained REST APIs with .NET Core, ensuring high reliability through
unit and integration testing (NUnit, Moq)
Bachelor of Computer Science
Migrated on-prem MongoDB deployment to AWS ECS, configuring container
Lviv National Ivan Franko University orchestration, networking, and persistent storage
Sep 2020 - Dec 2021 Delivered production support for legacy systems, identifying and resolving bugs in critical
business applications
Master`s Degree in Informatics Technologies: C#, .NET 8, .NET Framework, Web API, WCF, EF Core, Jenkins, MS SQL
Lviv National Ivan Franko Server, ADO.NET, MongoDB, GitLab, AWS, Terraform, NUnit, Fluent Assertions, Moq.
University
Dec 2019 - Jan 2020
Language EPAM Systems
English - Intermediate Software Engineer
(Global Insurance Company, under NDA)
Expertise Contributed to the development of an agency management system for an insurance
company, enhancing functionality and improving overall system performance.
C#
Key Contributions:
.NET
Enhanced database performance by modifying and optimizing stored procedures.
ASP.NET Web API Developed functionality for generating reports in CSV format.
Entity Framework Core Improved code quality by writing unit tests (NUnit) and participating in code reviews.
ADO.NET Refactored existing codebase to increase maintainability.
WCF Fixed software defects and supported ongoing product improvements.
MS SQL Technologies: C#, .NET, Web API, Angular, Windows Forms, NUnit, Moq, MS SQL Server,
AWS ADO.NET, GitLab
Azure
Sep 2018 – Dec 2019
Jenkins
Terraform EPAM Systems
Junior Software Engineer
T-SQL
MongoDB (Global Enterprise Client, under NDA)
JavaScript Worked on large-scale enterprise projects in the oil & gas industry, focusing on modernizing
GitLab Pipelines legacy applications and migrating them to cloud-based solutions on Microsoft Azure.
Key Contributions:
Certifications Led migration of WCF services to modern Web API.
Implemented secure authentication using Azure Active Directory.
Microsoft Certified: Azure
Configured Azure Key Vault and integrated logging with Application Insights.
Fundamentals Refactored and optimized existing codebase for performance and maintainability.
Claude Certified Architect – Fixed critical bugs and ensured system stability during migration.
Foundations Technologies: C#, .NET, ASP.NET Web Forms, Web API, WCF, ASP.NET MVC, Microsoft
Claude Certified Developer - Azure, MS SQL Server, ADO.NET, Entity Framework.
Foundations