Senior .NET Developer

We are looking for a Senior .NET Developer to join our team and work on a B2B platform for certified online courses and training materials in a specialized professional niche.

Responsibilities

Design and develop features across .NET Core and legacy VB.NET / Web Forms codebases; Quickly understand unfamiliar code and make clean, minimal, well-targeted changes; Refactor and modernize existing code incrementally, without large-scale rewrites; Work with MySQL on a live production database — schema design, indexing, query optimization, and safe versioned migrations; Ensure proper testing and deliver stable, consistent releases; Conduct code reviews and support team members in solving complex tasks; Document key technical decisions (e.g. in ADRs or a shared knowledge base); Clearly explain and justify technical decisions to the team; Communicate effectively with team and US-based client, with at least ~1 hour of overlap with US Mountain Time

Requirements

4+ years of commercial .NET development experience; Strong knowledge of C# and .NET, with ability to read and work in legacy VB.NET + Web Forms; Deep understanding of Entity Framework (EF Core) and manual SQL; Strong hands-on experience with MySQL specifically; Proficient in Git and Azure DevOps; Experience with unit/integration testing, including covering legacy code; Responsible, controlled use of AI-assisted development tools (Claude Code, Codex, Cursor, etc.) — validating AI output and documenting significant decisions; Upper-Intermediate English or higher

Nice to have

Experience with Telerik UI, Blazor, or .NET MAUI; Experience with Azure, IIS / Windows Server; Background in aviation, eLearning, or other regulated domains

Benefits

500 USD referral bonus; Innovation Culture: Work in a team that actively experiments with AI and modern development approaches; Real Product Impact: Direct collaboration with a client and influence on product decisions; Flexible Work: Remote work or a modern office in Kyiv; Generous Time Off: 20 paid vacation days + 15 sick leave days annually; Professional Growth: Compensation for courses, certifications, and learning resources; Cutting-Edge Tools: Access to premium AI tools (Cursor Pro, Сlaude Code, GitHub Copilot, etc.)