Senior C#/.NET Application Support Engineer – L2/L3
About the role
The Senior C#/.NET Application Support Engineer – L2/L3 is responsible for managing enterprise payment workstation gateways and IIS/Windows server infrastructure across multiple US datacenters. The role involves maintaining high uptime for web applications and server environments, leading complex incident restoration and change execution, and performing monthly patching cycles. The engineer will also cross-train to provide secondary backup for API Gateway services. The position requires strong troubleshooting skills in C#/.NET applications and experience with MS SQL Server, Windows Server, IIS, and F5 BIG-IP load balancers.
Must have
- C#/.NET application troubleshooting
- MS SQL Server (T-SQL) and good to have Windows Server 2016/2019, IIS, L), F5 BIG-IP LTM/GTM and gateway protocols.
- 5+ years supporting mission-critical enterprise infrastructure on Windows/IIS platforms.
- Primary IST hours for scheduled maintenance + rotational 24/7 on-call for Americas P1/P2 incidents.
Technologies
- C#
- .NET
- IIS
- SQL
- SQL Server
- Windows
- Windows Server
Highlights
The role requires working primarily during IST hours for scheduled maintenance, with a rotational 24/7 on-call requirement for handling critical incidents in the Americas. Candidates should have 5+ years of relevant experience. The position is full-time.
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