Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Backend-focused engineer with hands-on experience building REST APIs and backend systems using ASP.NET Core, MongoDB, Docker, and Kubernetes. Previously worked as a full-stack developer using Next.js and TypeScript for real client projects. Currently open to remote (EU/CET) and B2B roles. I enjoy designing structured APIs (JWT, Swagger/OpenAPI), writing clean backend logic, and deploying production-ready applications end-to-end while deepening my .NET expertise.…Backend-focused engineer with hands-on experience building REST APIs and backend systems using ASP.NET Core, MongoDB, Docker, and Kubernetes. Previously worked as a full-stack developer using Next.js and TypeScript for real client projects. Currently open to remote (EU/CET) and B2B roles. I enjoy designing structured APIs (JWT, Swagger/OpenAPI), writing clean backend logic, and deploying production-ready applications end-to-end while deepening my .NET expertise.

Ivan Copic

Software Engineer, Full Stack Developer, Back-End Developer, +2





Backend-focused engineer with hands-on experience building REST APIs and backend systems using ASP.NET Core, MongoDB, Docker, and Kubernetes. Previously worked as a full-stack developer using Next.js and TypeScript for real client projects. Currently open to remote (EU/CET) and B2B roles. I enjoy designing structured APIs (JWT, Swagger/OpenAPI), writing clean backend logic, and deploying production-ready applications end-to-end while deepening my .NET expertise.…Backend-focused engineer with hands-on experience building REST APIs and backend systems using ASP.NET Core, MongoDB, Docker, and Kubernetes. Previously worked as a full-stack developer using Next.js and TypeScript for real client projects. Currently open to remote (EU/CET) and B2B roles. I enjoy designing structured APIs (JWT, Swagger/OpenAPI), writing clean backend logic, and deploying production-ready applications end-to-end while deepening my .NET expertise.

Available to hire

Backend-focused engineer with hands-on experience building REST APIs and backend systems using ASP.NET Core, MongoDB, Docker, and Kubernetes. Previously worked as a full-stack developer using Next.js and TypeScript for real client projects.

Currently open to remote (EU/CET) and B2B roles. I enjoy designing structured APIs (JWT, Swagger/OpenAPI), writing clean backend logic, and deploying production-ready applications end-to-end while deepening my .NET expertise.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Intermediate

Work Experience

Fullstack Developer Intern at Final Line Technologies

March 1, 2026 - Present

Building and maintaining Next.js/React applications with C# ASP.NET Core Web APIs. Implementing CRUD operations, validation, and structured error handling. Working with MongoDB (collections, queries, indexing) and using Docker and Kubernetes for containerization and deployment. Documenting APIs with Swagger/OpenAPI.

Operations Manager at Encore Event Technologies

June 1, 2025 - March 1, 2026

Managed operations and coordinated teams in a technical environment. Developed strong problem-solving and leadership skills while supporting day-to-day operational delivery.

Back End Developer Intern at Final Line Technologies

October 1, 2024 - March 1, 2025

Contributed to backend systems and API development using .NET Core and MongoDB. Worked with Docker and Kubernetes within containerization and deployment workflows.

Full Stack Developer (Freelance) at Soul Trader

April 1, 2024 - Present

Built and deployed web applications for multiple clients remotely. Managed the full development lifecycle from planning through implementation to deployment.