Ivan

Ivan Sentemon Poznań, Poland
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.NET Full Stack Developer github.com/sentemon
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SKILLS EDUCATION
Bachelor’s Degree – In Progress
BACKEND – C#, .NET, Entity Framework Core, SQL (Postgres,
MSSQL), REST, GraphQL, MassTransit (RabbitMQ), Redis, SignalR, Unit
Testing (xUnit, Moq), Integration Testing (Testcontainers)
LANGUAGES
FRONTEND – Angular, TypeScript, JavaScript, RxJS, SCSS, CSS,
English – Upper-Intermediate (B2)
Bootstrap
Polish – Fluent (C1)
Architectures & Patterns & Principles – Microservices, Clean
Architecture, Domain-Driven Design (DDD), Event-Driven Architecture German – Pre-Intermediate (A2)
(EDA), CQRS, Mediator, MVC, SOLID, OOP, DRY, KISS, YAGNI, Clean
Code Ukrainian – Native (C2)

DevOps & Tools – Docker, Kubernetes (Helm, kubectl), Azure (App Russian – Native (C2)
Services, Blob Storage, Functions), GitHub, Git, Jira, Postman,
ElasticSearch, Infrastructure as Code (Bicep), CI/CD Pipelines, Keycloak

EXPERIENCE

FitnessApp – Full Stack Developer
October 2024 – Current
●​ Description: A social fitness platform that allows users to share personal posts, engage in private
real-time chats, and log their workout activities.
●​ Technologies: C#, ASP.NET Core, GraphQL, Entity Framework Core, MassTransit, Keycloak,
Testcontainers, Angular, TypeScript, SCSS, Docker, Kubernetes, Azure Blob Storage, Git, CI/CD
●​ Tasks:
○​ Designed and developed backend functionality using ASP.NET Core 8 with GraphQL API.
○​ Applied Domain-Driven Design principles for scalable microservices architecture.
○​ Ensured adherence to Clean Architecture and SOLID principles throughout the project.
○​ Optimized performance by using Entity Framework Core with caching strategies.
○​ Developed real-time private chat functionality leveraging SignalR.
○​ Containerized all services using Docker, orchestrated with Kubernetes, and designed Docker
Compose setups for local development.
 ○​ Integrated Keycloak for secure authentication using OAuth 2.0 and OpenID Connect.
○​ Wrote integration tests using Testcontainers and xUnit to achieve over 80% coverage.
○​ Integrated CI/CD pipelines using GitHub Actions to automate testing and deployment.
○​ Integrated RabbitMQ by MassTransit for reliable messaging between microservices.
○​ Integrated Azure Blob Storage for secure and scalable file handling.
○​ Created a responsive frontend with Angular 18, SCSS, and TypeScript.
○​ Managed development workflow using a Kanban board and Agile practices

MessagingPlatform – Full Stack Developer
August 2024 – October 2024
●​ Description: A real-time communication application designed for seamless messaging and
efficient collaboration between users.
●​ Technologies: C#, ASP.NET Core Web API, EntityFrameworkCore, MediatR, SignalR, Angular,
TypeScript, CSS, Docker, Git
●​ Tasks:
○​ Developed RESTful API with ASP.NET Core Web API and MediatR for command/query handling.
○​ Implemented WebSocket-based real-time chat using SignalR for message streaming.
○​ Built the frontend with Angular 18 and TypeScript, adhering to responsive design principles.
○​ Utilized Docker for containerization of backend, frontend, and database services.
○​ Automated CI/CD pipelines with GitHub Actions, ensuring smooth deployments.
○​ Designed and implemented database schemas using Entity Framework Core.
○​ Created unit and integration tests with xUnit and Moq to maintain high-quality code.