Senior C# Developer

Job Title: Senior C# Developer Payment Systems Integration

Location: Remote Latin America Preferred

Type of Contract: Full-Time

Salary Range: Premium USD Compensation (with performance bonuses)

Language Requirements: Excellent English proficiency (written and spoken) REQUIRED

We are seeking a skilled Senior C# Developer with strong .NET Core expertise to join our team for a high-impact payment systems integration project. You will be responsible for building and maintaining secure, scalable payment processing solutions that integrate with 250+ global processors. Your work will directly support major hospitality and retail clients, ensuring seamless and compliant transactions at scale.

Key Responsibilities

• Develop microservices using C# and .NET Core 8.0 within Linux Docker containers
• Integrate payment gateways including Stripe, Global Payments, Freedom Pay, and others
• Implement PCI-compliant iframe solutions for secure payment capture
• Build and maintain robust RESTful APIs for payment processing
• Develop React.js (TypeScript) components for frontend payment interfaces
• Optimize performance for high-volume transaction systems
• Assist with .NET Core upgrades and modernization initiatives
• Ensure secure transaction storage and database integration with Azure SQL

Must-Have Qualifications

• 5+ years of professional C# development experience with .NET Core/.NET Framework
• 3+ years working with payment systems, fintech, or transaction-heavy platforms
• Strong experience integrating third-party APIs at scale
• Background in hospitality or retail payment solutions is highly desirable
• Hands-on experience with microservices architecture and Docker (Linux containers)
• Familiarity with cloud platforms (Azure preferred; AWS a plus)
• Proven ability to design and implement PCI-compliant, secure payment solutions

Preferred Qualifications

• Experience with multi-tenant SaaS platforms
• Previous migration experience from .NET Core 2.2 to 8.0
• Knowledge of React.js with TypeScript and server-side rendering
• Exposure to monitoring tools such as Datadog and Sentry.io

Benefits & Perks

• Competitive USD compensation with performance-based bonuses
• Fully remote work with flexible hours and generous time off
• Annual learning budget for certifications, conferences, and training
• Direct collaboration with Fortune 500 clients and growing SMBs
• Annual company retreat and regular team-building events
• Support for open-source contributions and speaking engagements
• Transparent compensation structure with clear career progression