Senior C# Backend Developer (.NET Core / AWS)

We are exclusively recruiting on behalf of a globally recognized technology organization operating at the intersection of financial services, digital platforms, and enterprise-scale software engineering. This is a direct hiring process for one specific company only, not a general talent pool or multi-client search.

The company supports mission-critical systems used by millions of users worldwide and is heavily investing in modern cloud-native architecture, platform scalability, and digital transformation initiatives across multiple international markets.

As part of continued growth, they are looking for an experienced Senior C# Backend Developer to join a high-performing engineering team working on large-scale distributed systems and cloud-based applications in a highly collaborative international environment.

This is an opportunity to work on technically challenging products with strong engineering standards, modern infrastructure, and long-term strategic projects.

What You’ll Be Doing

• Designing, developing, and maintaining backend services and APIs using C# and .NET Core
• Building scalable, secure, and high-performance applications in cloud-native environments
• Working closely with cross-functional teams including architects, DevOps engineers, QA, and product stakeholders
• Deploying, managing, and optimizing applications within AWS cloud infrastructure
• Contributing to system architecture discussions and technical decision-making
• Writing clean, maintainable, and well-tested code following engineering best practices
• Optimizing database interactions and performance using PostgreSQL
• Supporting CI/CD processes and modern software delivery practices
• Participating in code reviews, mentoring, and technical knowledge sharing across teams

Required Skills & Experience

• Strong hands-on experience with C# and .NET Core
• Solid understanding of backend architecture principles and API development
• Experience working with Amazon Web Services (AWS), including application
• Deployment, infrastructure management, and cloud-native concepts
• Strong understanding of relational databases and PostgreSQL
• Experience working in agile software development environments
• Strong problem-solving skills and ability to work independently within distributed teams
• Good communication skills in an international environment

Nice to Have

• Exposure to Angular or other modern frontend frameworks
• Experience with Python
• AWS certifications or other cloud-related certifications
• Experience with containerization, CI/CD pipelines, or infrastructure-as-code tools
• Previous experience working on enterprise-scale or fintech-related systems

What the Company Offers

• Opportunity to work on enterprise-grade, high-impact platforms used globally
• Modern technology stack and cloud-first engineering environment
• International and collaborative team culture
• Long-term projects with strong technical ownership
• Professional development and certification support
• Competitive compensation package
• Flexible hybrid working model
• Work with experienced engineers in a highly stable and mature organization

Location & Work Model

• Serbia (only)
• Hybrid work model (2–3 days per week in the office, depending on team and project needs)

• Flexible engagement options:

  • Permanent employment contract (classic contract)
  • B2B contract option available