Sr. Software Engineer II – Back End - Access Control

AXS•Cleveland, OH

19d•Hybrid

About The Position

AXS is looking for a Sr. Software Engineer to join their team and help power experiences for the LA28 Olympic and Paralympic Games. In this role, you’ll build and scale the ticketing systems that connect millions of fans to unforgettable moments. We’re looking for someone who thrives working across a mix of tools, languages, and architectures, and enjoys turning complex challenges into seamless, high-impact solutions. You’ll develop B2B applications designed for massive demand, while contributing to enterprise systems that support global audiences at scale.

Requirements

6+ years of professional software engineering experience, including ownership of large features or systems
BS in Computer Science or a related technical field (or equivalent practical experience)
Deep understanding of system design, distributed architecture, and engineering trade-offs
Strong command of the software development lifecycle, including design, testing, deployment, and observability
Expertise in C# and .NET Core, with a strong grasp of the surrounding ecosystem
Proven track record of designing, scaling, and versioning RESTful APIs within distributed microservices architectures
Strong experience with relational databases (SQL Server, PostgreSQL, MySQL, or Oracle), including performance tuning and data modeling
Hands-on experience with containerization (Docker) and Infrastructure as Code (IaC) in cloud environments
Track record of building and operating high-scale, high-availability transactional systems
Demonstrated ability to quickly learn and apply new technologies in complex environments
Excellent communication skills, with the ability to influence technical decisions across teams
High ownership mindset with strong accountability for system quality, scalability, and reliability
Thrives in fast-paced environments, balancing immediate delivery with long-term architectural health

Nice To Haves

Experience building and maintaining multi-platform SDKs or shared codebases
Experience with Kotlin Multiplatform or Kotlin Native
Mobile development experience on iOS and/or Android
Experience with modern front-end frameworks such as React or Angular
Familiarity with designing cohesive experiences across web and mobile platforms
Experience working with AWS and cloud-native architectures
Experience with Infrastructure as Code tools such as Terraform
Experience with event-driven systems (e.g., Kafka) and asynchronous architectures
Proficiency with Git and modern CI/CD pipelines
Experience with test-driven development (TDD) and/or behavior-driven development (BDD)
Experience with NoSQL technologies such as Elasticsearch or DynamoDB
Domain experience in ticketing, inventory management systems, or e-commerce platforms

Responsibilities

Lead the implementation of large features or subsystems from design through delivery
Actively contribute to architectural discussions and help shape long-term technical direction
Design and deliver new features and enhancements for our global ticketing platforms
Build resilient, high-performance applications that scale seamlessly during extreme traffic spikes
Create and maintain services that power our core infrastructure, including APIs for mission-critical products
Develop scalable modules for both internal systems and external partner integrations
Partner with third-party providers to create seamless, end-to-end experiences for customers and fans
Take ownership of technical quality, scalability, and system reliability
Write clean, consistent, and well-tested code using modern open-source languages and frameworks
Participate in design and code reviews to uphold best practices and maintain high code quality
Collaborate closely with engineers, architects, product managers, and business stakeholders to deliver innovative, high-impact solutions
Mentor team members and provide technical guidance to elevate the team’s capabilities
Drive continuous improvements in team workflows, tools, and engineering practices

Benefits

medical, dental and vision insurance
paid holidays
vacation and sick time
company paid basic life insurance
voluntary life insurance
parental leave
401k Plan (with a current employer match of 3%)
flexible spending and health savings account options
wellness offerings
Opportunities for learning and leveling up through training and education reimbursement
Access to meaningful volunteer opportunities and community engagement programs