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Sr. Full Stack Engineer

United IT Solutions

 

Wilmington, DE, USA

Posted On: 30+ days ago
Experience: 8+ years
Availability: Hybrid
Openings: 1
Category: Sr. Full Stack Engineer
Tenure: No Preference/Any
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Description

Job Description:

  • Senior .NET Full Stack Developer emphasizing backend for platform integrations and payments processing in our core banking systems. You'll drive secure, scalable solutions for transaction workflows, third-party gateways, and regulatory-compliant payment platforms.

 

Key Responsibilities

  • Develop backend services in .NET Core/8+ for payments processing, including ISO 20022/SWIFT message handling, real-time rails (FPS, RTP), and full lifecycle from initiation to settlement/reconciliation.
  • Integrate platforms with bank APIs, third-party gateways (e.g., Visa, ACH), SFTP/XML/JSON feeds, and microservices using ASP.NET API, gRPC, and queues like RabbitMQ.
  • Contribute full stack with Angular/React frontends for payment dashboards, while optimizing SQL Server/NoSQL for high-volume financial data and ensuring PCI-DSS compliance.
  • Manage CI/CD via Azure DevOps, Docker/Kubernetes deployments, performance tuning, and monitoring with Application Insights for production stability.
  • Lead code reviews, agile collaboration with fintech teams, and troubleshooting for payments and integration issues.

 

Required Qualifications

  • 8+ years .NET backend experience, including 4+ years in payments/integration (ISO 20022, SWIFT MT/MX, SEPA, Open Banking).
  • Expertise in C#, async APIs, Entity Framework, secure auth (OAuth/JWT), and cloud (Azure/AWS) for scalable financial apps.
  • Strong SQL, message processing, error handling, and regulated environments; full stack basics (Angular/TypeScript).

 

Preferred Skills

  • Banking payments (ACH, wire, RTP), event sourcing, and DevOps tools (Terraform, ELK).
  • Certifications: Microsoft Azure Developer Associate.

Education

Any Graduate

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