Senior Back End Developer (C#)

AI-assisted development tools (GitHub Copilot, Cursor, Claude Code, ChatGPT) are also part of the team's everyday workflow, helping developers move faster with coding, debugging, refactoring, testing, and documentation.

Important: this role requires overlap with 2 AM–10 AM PST/PDT — some flexibility is possible in both directions.

• Lead design and delivery of complex features, from ideation to production.
• Proactively identify problems and drive technical decisions with minimal oversight.
• Use AI-assisted tools to accelerate delivery, critically validating output for correctness and security.
• Produce clear documentation for API consumers.
• Drive automated test coverage for your components.
• Own and evolve code within your product area, including microservices architecture.
• Modernize legacy functionality and improve the maintainability of existing solutions.
• Follow engineering best practices around code review, version control, CI/CD , and secure development.
• Investigate issues, analyze logs and telemetry, and deliver safe, reliable fixes.
• Share knowledge and help improve team development practices.
• 5+ years building web apps /backend APIs in C#.
• Proven experience making architectural decisions and owning technical trade-offs.
• Strong OOD principles, classic design patterns (GoF).
• Experience with microservices architecture, as well as working with and modernizing legacy systems.
• Strong data modeling / MS SQL / data access optimization.
• Experience with API design, implementation, and troubleshooting.
• Unit & integration testing (NUnit/xUnit, FluentAssertions, Moq).
• Comfortable owning code from commit to production, with strong CI/CD and Git-based workflow experience.
• Understanding of web security fundamentals and secure coding practices.
• Comfortable using AI tools as a core part of daily engineering work — applied to production-quality code, not just casual experimentation.
• Experience integrating LLM/AI features into products (agents, RAG, MCP-based tooling), building internal AI-driven developer-productivity tooling would be a plus.
• Good communication skills and Intermediate+ English.
• Communication & Clarity — Explains problems, trade-offs, and solutions clearly to both technical and non-technical stakeholders.
• Ownership & Accountability — Takes accountability for outcomes, proactively flags risks, and stays engaged beyond assigned tasks.
• Growth Mindset & Leadership — Eager to learn, goal-oriented, with experience leading a team, project, or initiative.
• Flexible working hours
• Experienced development teams
• Long-term employment
• Competitive salary
• Paid vacation and days off on national holidays
• Paid sick leave and internal medical insurance policy
• Mental health coverage
• Compensation for training and additional education
• Community of practice, regular knowledge sharing among colleagues
• Provision of computer equipment is needed
• Internet compensation (50$ per month)
• And other benefits, described in detail in the Staff Handbook