Senior Backend Software Engineer (.NET)

This is a vendor requirement UpWia is sourcing candidates for, not an in-house UpWia role. Client and engagement specifics are shared directly with matched candidates during the process; only the role requirements are listed here.

A senior backend engineer role building and supporting production services for a large-scale enterprise application, with a mix of new feature work and hands-on production support.

• Design, develop, test, deploy, and support backend services for a production enterprise application
• Build secure REST/SOAP APIs and integrations across mobile, .NET, and legacy enterprise systems
• Develop workflow automation and event-driven processing
• Troubleshoot complex production defects and perform root-cause analysis
• Provide occasional evening or weekend support when required

• 5+ years of hands-on backend software engineering and enterprise application development experience
• Strong expertise in C#, .NET, and ASP.NET Core
• Experience with at least one major cloud platform (Azure, AWS, or GCP)
• Experience with serverless/container technologies (Azure Functions, AWS Lambda, Kubernetes, ECS, or similar)
• Working knowledge of OAuth 2.0, OIDC, JWT, and secrets management
• Bachelor's degree in Computer Science, Software Engineering, IT, or equivalent professional experience

• Experience with event-driven/workflow tooling (Kafka, Step Functions, Temporal, or similar)
• Experience with SQL Server or PostgreSQL and ETL/ELT data work
• Familiarity with distributed tracing, logging, and monitoring tooling

Share your resume at hr@upwia.io, referencing UPW-V-2101 in the subject line.