Senior Back-End Developer (C#)

Quick Facts

• Role: Senior Back-End Developer (C#)
• Team: Banking Platform (core services for online banking)

Description

You will lead the design and delivery of complex backend features for a mission-critical digital banking platform, working across C#/.NET APIs, microservices, and legacy modernization. The role emphasizes technical ownership, architecture decision-making, automated testing, secure development, and clear documentation for API consumers. You will also investigate production issues using logs and telemetry and collaborate in a distributed team.

Responsibilities

• Lead ideation-to-production delivery of complex features
• Proactively identify problems and drive technical decisions with minimal oversight
• Use AI-assisted development tools, while validating correctness and security
• Write clear documentation for API consumers
• Drive automated unit/integration test coverage
• Own and evolve code in your product area, including microservices architecture
• Modernize legacy functionality and improve maintainability
• Follow engineering best practices: code review, version control, CI/CD, secure development
• Investigate issues using logs/telemetry and deliver safe fixes
• Share knowledge and improve team development practices

Requirements

• 5+ years building web apps and back-end APIs in C#
• Proven architectural decision-making and ownership of technical trade-offs
• Strong OOD principles and classic design patterns (GoF)
• Experience with microservices and modernizing legacy systems
• Strong data modeling and MS SQL data access optimization
• Experience with API design, implementation, and troubleshooting
• Unit & integration testing experience (NUnit/xUnit, FluentAssertions, Moq)
• Comfortable owning code from commit to production with CI/CD and Git-based workflows
• Web security fundamentals and secure coding practices
• Comfortable using AI tools daily for production-quality code
• Intermediate+ English communication

Benefits

• Flexible working hours
• Experienced development teams
• Long-term employment
• Competitive salary
• Paid vacation and national holidays
• Paid sick leave and internal medical insurance
• Mental health coverage
• Compensation for training and additional education
• Community of practice and regular knowledge sharing
• Computer equipment provision
• Internet compensation ($50/month) and additional benefits per Staff Handbook