[WAP] Senior Full-Stack Developer (React, .NET)
Core
Design, build, and ship production C#/.NET services and REST APIs serving high-volume payment and risk data under PCI DSS constraints for a payments technology company.
Role type
Senior Full-Stack Developer (C#/.NET backend with React/TypeScript frontend)
Builds
Production-grade risk analysis and scoring platform services and APIs
Domain
Payments, risk analysis, fraud detection, financial technology
Deliverable
production ML models | product features
Required skills
C#/.NET (ASP.NET Core, EF Core, Dapper), React, TypeScript, REST API design, OpenAPI contracts, relational database design, Docker, Kubernetes (AKS), Azure DevOps CI/CD, agentic AI coding tools (Claude Code, Cursor, Copilot), unit/integration/contract testing
Preferred skills
Microsoft Fabric, Delta Lake, messaging systems (Azure Service Bus, Kafka), OAuth2/OIDC, Python, LLM-integrated applications, PCI-scoped systems experience
Technologies
C#, .NET, ASP.NET Core, React, TypeScript, Docker, Kubernetes, AKS, Azure DevOps, Microsoft Fabric, OpenAPI, xUnit, NUnit, Testcontainers, Azure Service Bus, Kafka, OpenTelemetry, Microsoft Entra ID
Responsibilities
Design and implement C#/.NET services and REST APIs; manage API versioning and backward compatibility; optimize data access for high-volume operational and analytical data; implement security controls for tokenized card data; contribute to React/TypeScript frontend features; maintain container configurations and CI/CD pipelines; utilize agentic AI coding tools for development
Seniority
Senior, hands-on IC