✦ Luna Orbit — Software Engineering

Fraud .NET Developer, AVP

at Citi

📍 Jacksonville, FL, US Hybrid 💰 $96K – $145K USD / year Posted April 14, 2026
Salary $96K – $145K USD / year
Type Not Specified
Experience mid
Exp. Years Not specified
Education Not specified
Category Software Engineering

Citi is hiring a Fraud .NET Developer to design, develop, support, and maintain scalable applications for fraud detection, prevention, and investigation. The role focuses on engineering microservices-based solutions with strong API and database integration in a regulated banking environment.

  • Design and develop automated workflows integrating multiple APIs, databases, and user interfaces
  • Build and maintain microservices-based applications using .NET Core
  • Support and maintain scalable fraud detection/prevention/investigation applications in production
  • Develop and maintain API integrations
  • Deliver engineering in a highly regulated financial environment

You will build automated workflows integrating APIs, databases, and user interfaces while developing microservices-based applications using .NET Core. The position also includes production support responsibilities to keep systems reliable and compliant in a highly regulated financial environment.

The ideal candidate is a hands-on .NET developer with strong microservices architecture and API development experience, ideally in fraud detection/prevention domains. They have production support experience in a highly regulated financial environment and can build scalable, automated workflows integrating APIs and databases.

.NET Coremicroservices architectureAPI developmentdatabase technologiesproduction supportfraud detectionfraud preventionfraud investigation
.NET Coremicroservices architectureAPI developmentdatabase technologiesproduction supportautomated workflowsfraud detectionfraud preventionfraud investigationscalable applicationshighly regulated financial environment
.NET Coremicroservices architectureAPI developmentautomated workflowsfraud detectionfraud preventionfraud investigationproduction supportdatabase technologiesscalable applicationshighly regulated financial environmentdistributed systems
problem solvercollaborationinnovationdelivering results with priderespect for otherspersonal development
Industry Banking
Job Function Develop and support .NET Core microservices for fraud detection, prevention, and investigation.
Role Subtype Backend Engineer
Tech Domains Python, Java, Kubernetes, Docker, .NET Core
Fraud .NET Developer.NET Coremicroservicesmicroservices architectureAPI developmentautomated workflowsfraud detectionfraud preventionfraud investigationproduction supportdatabase technologiesscalable applicationshighly regulated financial environmentEnterprise Operations & TechnologyCitiHybridJacksonvilleFlorida

Must have hands-on experience with .NET Core, Must have microservices architecture experience, Must have API development and production support experience, Must have fraud detection, fraud prevention, and/or fraud investigation experience

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