Senior Software Engineer, Back End (C#, AWS)
Upstart 13Location not specified
Posted December 17, 2025
Full Time
About the Company
We put people first at Upstart 13! We believe the world is filled with amazing people and we are willing to go to great lengths to seek out others who share our values to join our cause of bringing down borders in technology for people everywhere.
Job Description
We are looking for an experienced Senior Back-End Developer to support and modernize our backend systems, including a legacy C# codebase, and lead the transition to a scalable, serverless infrastructure. The ideal candidate is a self-driven professional who thrives in both autonomous and collaborative settings, bringing robust technical skills and a high level of commitment to project success.
Requirements
- 10+ years of experience in backend development, with a strong focus on C# and.NET technologies, including.NET Core.
- Proven experience with AWS serverless architecture, particularly AWS Lambda, API Gateway, DocumentDB, and cost optimization strategies.
- Strong knowledge of MongoDB, DocumentDB, and Atlas, with experience in database management, data migration, and updates.
- Experience with Node.js and TypeScript, particularly for building scalable APIs and backend services.
- Familiarity with ServiceStack and API design principles, scaling, and optimization.
- Knowledge of CI/CD pipelines, infrastructure automation, and deployment management for cloud environments.
Benefits
- Long-term, full-time job
- Fully remote
- USD competitive salary
- 20+ Paid time off days
