Senior Software Engineer (.Net Core + LLM's)

About Aperia Solutions

About the Role

What You'll Do

• Build and ship production C#/.NET services and REST APIs for high-volume payment data under PCI DSS constraints.
• Develop React and TypeScript web application features, including component development and API integration.
• Own well-scoped risk-platform features through design, implementation, review, testing, and deployment.
• Contribute tool integrations, tests, and evaluations to a LangGraph-based agentic application.
• Write unit, integration, and end-to-end tests and participate actively in code review.
• Deploy through Azure DevOps CI/CD pipelines to AKS.
• Use Claude Code, Cursor, and GitHub Copilot under team standards.
• Pair with senior engineers and participate in design reviews.

What You Bring

• 3–5 years of professional software engineering experience shipping production systems.
• Solid C#/.NET skills, including ASP.NET Core and REST API design.
• Working proficiency in TypeScript and React with production frontend experience.
• Relational database fundamentals, including schema design, queries, and transactions.
• Ability to write meaningful tests and treat code review as part of the craft.
• Clear written and verbal communication.
• Comfort working in cloud environments and following deployments through CI/CD pipelines.
• Enthusiasm for AI-assisted and AI-native development.

Nice to Have

• Exposure to LLM development with LangGraph, LangChain, RAG, prompt engineering, or serious personal projects.
• Python proficiency beyond scripting.
• Hands-on Azure experience, including AKS/Kubernetes, App Services, or Azure DevOps administration.
• Payments, financial services, or PCI-scoped systems experience.
• Familiarity with messaging, observability, or OAuth2/OIDC identity standards.

Eligibility Requirements

• Must be willing to submit to a background investigation and drug test as part of the selection process.

Job Type and Schedule

• Full-time role.
• Hybrid schedule, Monday through Friday.

Work Location

• Work location is Dallas, Texas.

Benefits

• Benefits include health, dental, vision, life, disability, paid time off, parental leave, 401(k) matching, childcare assistance, education reimbursement, fitness membership, and volunteer time off.