Sr. Software Engineer II – Back End - Access Control

AXS connects fans with the artists and teams they love. Each year we sell millions of tickets to thousands of incredible events – from concerts and festivals to sports and theater – at some of the most iconic venues in the world. Since our founding in 2011, we’ve consistently pushed the industry forward and improved experiences for fans, making it easier than ever to discover events, find the perfect seats, and enjoy unforgettable live entertainment, and we continue to lead the evolution of our industry today.

We’re passionate about improving the fan experience and providing game-changing solutions for our clients, and we’re always looking for smart, motivated people to help make it happen. Bring your enthusiasm, your big ideas, and your desire to team up with some of the best and brightest in technology and entertainment.

AXSis looking for a Sr. Software Engineer to join our team and help power experiences for the LA28 Olympic and Paralympic  this role,you’llbuild and scale the ticketing systems that connect millions of fans to unforgettable moments.

We’relooking for someone who thrives working across a mix of tools, languages, and architectures, and enjoys turning complex challenges into seamless, high-impact solutions.

You’lldevelop B2B applications designed for massive demand, while contributing to enterprise systems that support global audiences at scale.

• 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 andmaintainservices 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 andmaintainhigh code quality
• Collaborate closely with engineers, architects, product managers, and business stakeholders to deliver innovative, high-impact solutions
• Mentor team members andprovidetechnical guidance to elevate the team’s capabilities
• Drive continuous improvements in team workflows, tools, and engineering practices

• 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 recordof 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 recordof building and operating high-scale, high-availability transactional systems
• Demonstrated ability to quickly learn and applynew 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

• Experience building andmaintainingmulti-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…