Senior Software Engineer - (Plano/Austin)

Responsibilities

• Create foundational components like modular architecture, event-driven systems, repository patterns, and LINQ capabilities for multiple applications.
• Develop business processes using Domain-Driven Design (DDD).
• Implement micro-frontend (MFE) applications using React and TypeScript, with an emphasis on user self-service functionalities.
• Design an asynchronous integration gateway utilizing AWS tools, while establishing canonical data contracts.
• Develop event schemas and establish publish/subscribe patterns for domain events via EventBridge.
• Create connector Lambdas to facilitate event translation and integrate resilience patterns for robustness.
• Translate and modernize legacy COBOL and Genero 4JS programs into clean, maintainable C#/.NET aligned to agreed architecture patterns.
• Build an agentic factory – for Self-Correction Loops that can analyze test failures, look back at the source code in Cobol or Genero, and autonomously refactor C# fixes.
• Automated test generation and execution, output diffing and reconciliation (legacy vs modern), deterministic runs, and clear mismatch reporting.
• Identify and remediate platform assumptions from HP MPE, UNIX emulation, file handling, and batch scheduling.
• Debug parity mismatches and performance issues; drive fixes to achieve functional equivalence.
• Collaborate with SMEs, QA, and stakeholders to clarify requirements and edge cases.
• Document migrated components, assumptions, and modernization decisions.

Qualifications

• 5+ years of professional software development experience.
• Strong hands-on experience with C# and .NET.
• Hands-on experience with AWS services.
• Ability to read and understand COBOL to accurately translate business logic.
• Strong experience with SQL Server and relational database concepts.
• Experience using AI-powered coding assistants (e.g., GitHub Copilot, Cursor) and Prompt Engineering in a professional context (translation, refactoring, test generation, automated review), with the ability to validate and correct outputs.
• Experience building automation workflows/pipelines that orchestrate multi-step processes (e.g., translate → refactor → generate tests → run → reconcile → report) and integrate with CI.
• Strong analytical, debugging, and problem-solving skills; comfort working with incomplete legacy documentation.
• Experience building parity harnesses, Deterministic Testing or Property-Based Testing to match the source and destination results to the last decimal point (golden master, snapshot tests, reconciliation tooling).