10/11/2026 updated
100 % available
Software Engineer | .NET & Cloud Specialist
Sofia, Bulgaria
Only remote
B.Sc. Communication Technologies and Cybersecurity (in progress)ASP.NET.NET FrameworkC Sharp (Programming Language)Entity FrameworkMicrosoft Visual StudioSQL Server Management Studio.NET CoreAsp.net Web ApiBackendGitBackend ProgrammingApi Design
Experienced software engineer with a strong background in C# / .NET development and cybersecurity. Solid practical experience building and maintaining desktop and backend applications using .NET Framework and modern .NET, with focus on clean architecture, maintainability, and secure coding practices.
Hands-on with WPF, MVVM pattern, and UI development for industrial/desktop applications. Familiar with Git, Visual Studio, Jira, and CI/CD workflows. Background in security testing, penetration testing, and IoT protocols (MQTT) from university specialisation and internships, which strengthens secure development and code quality.Comfortable working independently in agile/remote settings, translating requirements into reliable software solutions, and collaborating with cross-functional teams. Eager to apply .NET expertise in industrial environments.
Experience
Professional experience5 - 10 years
Freelancer since2023
Languages
EnglishFluent
Project history
Led HashVerifier compliance platform for Italy ADM as core technical lead within a 20-person cross-functional team. Redesigned SM Results Reconciliation from push to pull-based API, eliminating single points of failure. Built Evolution Reconciliation streaming service with per-account configuration, reducing monitoring alerts. Standardised PlatformType across 20+ integrations via launch URL, removing hardcoded logic from 10 vendors. Migrated vendor configuration from XML files to database, enabling UI management via Fusion Back Office.
Shipped C#/ASP.NET Core Web APIs and backend services, improving reliability and scalability. Turned R&D on technical/infrastructure topics into deployable API components with clear documentation. Drove design reviews to shape API contracts, validation, and logging across system architecture. Increased test coverage from 7% to 92% using xUnit, NSubstitute, and FluentAssertions.
Developed, optimized, and maintained microservice-based APIs for a personalization analytics platform. Led API migration from Node.js to .NET, successfully transferring 40% of endpoints and services. Collaborated with UX, architects, development, QA, and DevOps teams. Participated in Scrum sprint planning, daily stand-ups, refinement, grooming, and retrospectives.