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!  

Position Overview:


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.

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

Essential Job Functions & Core Responsibilities: 

• 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., GitHub 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

Working Conditions  
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.

Physical Demands
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.

Candidate Requirements

Must Have: 

• 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, CloudWatch
• 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 (CloudFormation or SAM preferred)
• Experience writing unit tests with mocking frameworks
• Experience with AWS networking
• Comfort using AI coding assistants (e.g., GitHub 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 integrations

Strongly Preferred: 

• Familiarity with hospitality industry protocols (FIAS, OHIP, PMS concepts like folios, reservations, NoPost flags)
• Advanced knowledge of SQL, stored procedures, database performance tuning, MSSQL
• Experience with AWS Step Functions for workflow orchestration
• Exposure to Go or other languages used in edge/on-premise components
• Experience with Redis/ElastiCache and OpenSearch.
• Familiarity with Sumo, Datadog and other monitoring + observability tooling
• Experience building or consuming MCP (Model Context Protocol) servers to extend AI tooling with custom data sources and APIs
• Hands-on use of agentic coding workflows — delegating tasks to AI agents, writing effective prompts, and reviewing AI-generated code for correctness and security
• Bachelor's degree in related field

Candidates for this role, must be based in the United States and legally eligible to work for any US employer.  Eleven is not able to sponsor candidates at this time. 

Eleven is a remote work employer and offers a comprehensive compensation and benefits package; our benefits package includes medical, dental and vision coverage, 401(k) plan, and an attractive paid time off policy.  The base salary range for this job in all geographic locations in the United States is $135,000-$150,000. Individual salaries within those ranges are determined through a wide variety of factors including but not limited to education, experience, knowledge, skills, and geography. 

Equal Employment Opportunity Statement 

Eleven provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. 

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training. 

If you require reasonable accommodation in completing this application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please direct your inquiries to recruitment@elevensoftware.com.