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Nazarii Mandiak

@nazariimandiak

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.NET Full Stack Developer at Godel Technologies building business-critical features and integrations.

Poland

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At Godel Technologies, I develop full-stack features and REST API enhancements for modern and legacy applications using C#, .NET 8, and Angular. I’ve delivered integrations for PAYGO and SEG, including their API and data-access workflows.

I also develop functionality across microservices and a legacy monolith, using Redis, RabbitMQ, and Elasticsearch to support distributed workflows. I’ve containerized .NET services for Microsoft Azure and developed unit, integration, and end-to-end tests with xUnit.

At Key Tech Solutions, I built REST API endpoints and microservices, and connected reusable Angular workflows to secured ASP.NET Core APIs. I also integrated AI/LLM-powered capabilities into application workflows.

Earlier at GlobalLogic, I developed features for a healthcare application and improved a frequently used WPF workflow screen’s load performance by about 50%. As an ASP.NET Core Intern at SoftServe, I developed API endpoints and frontend components while contributing to testing and deployments.

Experience

Work history, roles, and key accomplishments

Current

Senior .NET Full Stack Developer

Current

Godel Technologies

Apr 2025 - Present (1 year 6 months)

Developed 12+ full-stack features and REST API enhancements using C#, .NET8, .NET Framework 4.8, Angular14+, TypeScript, HTML, and CSS. Delivered major external integrations and containerized services using Docker and Kubernetes.

C#.NET 8 .NET Framework Angular TypeScript HTML CSS REST APIs Entity Framework T SQL Microsoft SQL Server Redis RabbitMQ Elasticsearch Docker Kubernetes Azure Azure DevOps CI CD xUnit Git GitHub Co Pilot

.NET Full Stack Developer

Key Tech Solutions

Apr 2024 - Mar 2025 (11 months)

Developed 10+ full-stack features using C#, .NET8, ASP.NET Core, Angular14+, TypeScript, HTML, and CSS. Built REST API endpoints and microservices with Redis, RabbitMQ, and Elasticsearch, and integrated AI/LLM-powered capabilities.

C#.NET 8 ASP.NET Core Angular TypeScript HTML CSS REST APIs Entity Framework Core LINQ MS SQL Server Redis RabbitMQ Elasticsearch Docker Kubernetes Azure Azure DevOps CI CD xUnit RxJS AI LLM Integration

.NET Developer

GlobalLogic

Jan 2022 - Apr 2024 (2 years 3 months)

Developed scheduling, billing, and data-entry features using C#, .NET Framework, WPF, XAML, MVVM, and Entity Framework. Improved load performance of a heavily used WPF workflow screen by ~50% and integrated the client with ASP.NET REST APIs.

C#.NET Framework WPF XAML MVVM Entity Framework LINQ SQL Server REST APIs JSON Async Await Asynchronous Programming xUnit Git Azure DevOps CI CD Object Oriented Programming SOLID Dependency Injection

ASP.NET Core Intern

SoftServe

Jul 2021 - Dec 2021 (5 months)

Developed REST API endpoints and backend features using C#, ASP.NET Core, and REST APIs. Built and integrated responsive frontend components using Angular, React, TypeScript, HTML, and CSS, and implemented data access with Entity Framework Core.