Job Description Insight Global is seeking a skilled .NET Engineer to support one of our best financial customers. The work authorization is not specified and the pay rate is between $20-26/hr. This person will help architect and deliver modern microservices that handle high-volume daily payment processing, lease management, and customer servicing operations by decomposing the legacy .NET monolith into scalable, maintainable services using Golang, AWS serverless, and React. You'll work with both legacy C#/.NET systems and modern cloud-native architectures, creating the bridge between their current state and future vision. Key Responsibilities: Lead Legacy System Decomposition: Analyze, understand, and extract critical business logic from our C#/.NET RAIN monolith, designing modern microservices using Golang that maintain operational excellence during migration. Architect Modern Services: Design and build new payment processing, lease management, and servicing APIs that serve as the foundation for next-generation servicing capabilities and automated customer support. Build Bridge Architecture: Create backend-agnostic servicing interfaces and APIs that can seamlessly operate with both legacy systems and new services, enabling gradual migration without business disruption. Ensure Payment System Reliability: Modernize and stabilize critical batch processing jobs that handle daily payment collection, ensuring high uptime for systems processing significant daily transaction volumes. Enable Business Capabilities: Extract and modernize business logic to support new features like flexible promotional schedules, automated agent integration, and item-level tax calculations that drive significant revenue opportunities. Implement Observability: Design robust monitoring, alerting, and observability frameworks for payment processing and lease servicing operations to ensure high availability and rapid issue resolution. Cross-System Integration: Work with Shared Tech and other product teams to integrate with event streaming, communications platforms, and shared services while maintaining backwards compatibility. Risk Management: Lead incident response for payment processing systems and implement preventative measures to protect revenue-critical operations during modernization efforts. We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to HR@insightglobal.com.To learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: https://insightglobal.com/workforce-privacy-policy/. Skills and Requirements 4+ years of professional experience in systems development with experience modernizing or migrating legacy systems in production environments. Proficiency in Golang: Strong experience developing backend services, APIs, and financial systems using Golang in production environments. Legacy System Experience: Ability to read, understand, and analyze C#/.NET codebases to extract business logic and identify service boundaries in complex monoliths. React/TypeScript Experience: Experience building frontend applications and customer-facing interfaces using React and TypeScript. Cloud Experience: Strong familiarity with AWS services and cloud-native architectures, with experience in containerization and modern deployment practices. Strong Testing Practices: Experience with automated testing strategies for both legacy system integration and new service development, including contract testing and data validation. Migration Expertise: Experience with gradual system migrations, feature flags, and strategies for maintaining system availability during modernization efforts. AI Development Enthusiasm: Interest in leveraging AI tools to accelerate legacy code analysis, service extraction, and development productivity. Excellent Communication: Strong ability to collaborate with stakeholders while managing the complexity of legacy system modernization and business continuity requirements. Financial Systems Background: Experience with payment processing, transaction systems, or financial service platforms, preferably in fintech, lending, or consumer financing domains. Database Experience: Strong SQL skills and experience with relational databases; PostgreSQL experience preferred, MSSQL knowledge is a plus. Event-Driven Architecture: Experience with event streaming, message queues, or pub/sub systems for building decoupled financial systems. Regulatory Compliance: Understanding of financial regulations, data security, and compliance requirements in consumer financing. Batch Processing Systems: Experience modernizing legacy batch jobs, schedulers, or high-volume transaction processing systems. Database Migration: Experience with database modernization projects, particularly MSSQL to PostgreSQL migrations.