Senior Backend Engineer - Remote

Overview

At Semperis, our mission is to be a Force for Good. Starting with being a great place to work. We believe that when people feel valued, supported, and empowered, they do their best work. That’s why we focus on creating an employee experience rooted in purpose, growth, and balance. Semperis has been recognized as one of America’s Fastest-Growing Cybersecurity Companies by the Inc. 5000, a DUNS 100 Top Startup to Work For, and a multi-year Inc. Best Workplace awardee.

In Short

• Design, implement, test, and deliver end-to-end features for our SaaS product that protects Microsoft Entra ID, Active Directory, and Microsoft 365 applications.
• Drive improvements in architecture, innovation, and adoption of quality and security best practices.
• Build strong collaboration, share knowledge openly, and contribute to a high-performing team culture.
• 5+ years of professional experience with .NET Core, delivering production-ready code at scale.
• Strong expertise in multi-threading and asynchronous programming (C#).
• Proven experience building and maintaining multi-tenant SaaS applications on Azure.
• Hands-on experience with containerized applications running in Kubernetes clusters.
• Background in enterprise applications and distributed systems development.
• Experience writing well-structured and comprehensive automated test suites.
• Excellent communication skills with both technical and non-technical stakeholders.

Requirements

• Experience with additional languages such as Python, PowerShell, or JavaScript.
• Knowledge of Microsoft Active Directory, Entra ID, Windows Security, and authentication protocols (OIDC, OAuth, SAML, NTLM, Kerberos).
• Familiarity with communication protocols: HTTP, TLS, SignalR, gRPC.
• Experience with databases such as OpenSearch or Redis.
• Understanding of secure coding practices and encryption algorithms.

Benefits

• Be part of a global team on the front lines of cybersecurity innovation.
• Celebrate curiosity, integrity, and people who take initiative.
• Work-life balance and growth opportunities.