Senior Software Engineer-Platform

POSITION PURPOSE Join our Agile/Scrum engineering team! You’ll contribute to developing and maintaining our central authentication SaaS services. These services are used by millions of people around the world in hotels, multi-family residences, campgrounds, and college campuses. Our platform provides secure and effortless internet connections for guests and residents, offering them an at-home Wi-Fi experience. REPORTING RELATIONSHIPS This role reports to an Engineering Manager and has no direct reports. ESSENTIAL JOB FUNCTIONS Develops primarily in C#/.NET, delivering APIs, backend services, and high-velocity data processing components. Develop and maintain SQL Server databases, T-SQL code, and stored procedures. Designs, builds, and supports distributed, event-driven systems running on AWS using (and not limited to) Lambda, DynamoDB, S3, EC2 , SNS, SQS . Leads efforts to re-architect and refactor legacy applications into modular, cloud-native microservices following AWS and industry best practices. Collaborates with Product, QA, and other engineers to turn user stories into scalable, secure, and observable production features. Owns end-to-end performance, scalability, and reliability of services — from design through deployment and monitoring. Integrates security-first development practices (IAM least privilege, encryption, secrets management, secure API design). Participates in design reviews, code reviews, and post-incident analysis to improve reliability and maintainability. Continuously evolves engineering standards, CI/CD pipelines, and testing practices in a fast-moving Agile environment. Contributes to related initiatives and continuous improvements as business needs evolve. WORKING CONDITIONS This position operates remotely in a home office environment. Standard home office equipment such as computers and phones is used regularly. There is no travel requirement, but travel may be available and encouraged intermittently to support in-person collaboration. PHYSICAL DEMANDS While performing the duties of this job, the employee must be able to operate a computer and potentially network equipment . The employee will frequently communicate with colleagues using text and video applications. REQUIREMENTS 5+ years professional experience developing in C#/.NET and SQL , with emphasis on backend systems and data processing. Strong AWS expertise , particularly in serverless and managed-service architectures (Lambda, DynamoDB, S3, EventBridge ). Demonstrated experience designing and operating RESTful APIs and backend services at scale. Solid understanding of data modeling across SQL and NoSQL systems (SQL Server, DynamoDB, S3). Knowledge of secure development, incident response, and compliance (SOC2, GDPR, privacy standards) preferred . Proven ability to ship, maintain, and support production services as part of a small, high-performing team. Strong focus on end-user impact, reliability, and continuous improvement. WHY ELEVEN Real-world scale: Your code powers connectivity for tens of millions of devices worldwide. Modern tech stack: Fully AWS-native with AI tooling at its core. Collaborative culture: small teams, big autonomy, and a shared commitment to quality. Remote-first flexibility: Work from anywhere in the U.S. in a well-supported, outcome-driven environment. You must be legally eligible to work in the United States to be considered for this role.