Software Engineer-Authentication

We Move Fast, Think on Our Feet, and Have Fun Doing It!

At Eleven, we thrive on solving complex challenges and pushing boundaries. We work at a rapid pace, embracing change, and staying laser-focused on delivering exceptional value to our customers.

We’re looking for visionary problem-solvers who excel in dynamic environments, embrace AI tools in streamlining work processes, adapt quickly, and drive innovation. If you love thinking outside the box, collaborating with top-tier talent, and having fun while making an impact—let’s talk!

In this Software Engineer-Authentication role you will build and maintain AWS serverless integrations that connect our captive portal WiFi platform with hotel Property Management Systems (PMS) and loyalty programs worldwide. Using primarily C#/.NET and AWS Serverless, you’ll develop integrations that enable hotel guests to authenticate via room number lookups, post charges to guest folios, and enroll in loyalty programs—all through our captive portal.

Every day, tens of millions of hotel guests across major hospitality brands benefit from the services we provide.

This role reports to an Engineering Manager and has no direct reports.

• Develop, test, and maintain AWS Serverless applications (C# / .NET) that connect our platform with third‑party PMS and loyalty APIs
• Implement SQS‑triggered message processing pipelines that handle guest inquiry, room charge, configuration, and loyalty enrollment work units
• Integrate with third‑party REST, SOAP, including OAuth2/Cognito authentication flows, token caching, and credential management via AWS SSM Parameter Store
• Build and maintain DynamoDB data models for device configuration, session caching, and authentication token storage
• Write comprehensive unit tests using mocking frameworks
• Leverage AI‑assisted development tools (e.g., Git Hub Copilot, agentic coding assistants) to accelerate development, improve code quality, and automate repetitive tasks
• Collaborate with other development, product management, and UX team members to turn user stories into performant, scalable capabilities within the ecosystem
• Troubleshoot production issues across distributed serverless architectures
• Participate in code reviews and contribute to consistent patterns across the team’s portfolio of integrations
• Work within Agile methodology with two‑week sprints
• Identify and incorporate security requirements in the software development lifecycle, including PII handling, data obfuscation, and secure credential storage
• Participate in on‑call rotation
• Other duties as assigned

This role routinely uses standard office equipment such as computers, phones, and printers. This job operates remotely, in a home office environment, with occasional travel for team meetings or company offsites.

This role primarily involves working at a computer in a remote office environment. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

• 3+ years of professional software engineering experience
• Experience reading and writing SQL
• Proficiency in C# and .NET (experience with .NET 8 or recent versions preferred)
• Experience building and deploying AWS Lambda functions or similar serverless architectures
• Working knowledge of AWS services: SQS, DynamoDB, API Gateway, SSM Parameter Store, Step Functions, Cloud Watch
• Experience consuming and integrating with RESTful APIs, including OAuth2 authentication flows
• Solid understanding of software design patterns, dependency injection, and writing testable code
• Familiarity with Git, CI/CD pipelines, and Infrastructure-as-Code (Cloud Formation or SAM preferred)
• Experience writing unit tests with mocking frameworks
• Experience with AWS networking
• Comfort using AI coding assistants (e.g., Git Hub Copilot, Cursor, Claude) as part of daily development workflow
• Proven experience shipping product as part of an Agile team
• Strong desire to help a successful company scale existing cloud‑based services while also being a significant contributor to the development of new…