Senior Software Engineer, Backend

As a Senior Backend Engineer on Unity Spark, you design and operate cloud services that power real-time collaboration, game publishing, and content delivery. You own end-to-end features, from initial design to production, working with engineers, designers, and product managers. You will shape scalable backend systems, infra, and CI/CD, while embracing AI coding tools to improve delivery. This role offers impact across a web-based game editor used by a wide range of creators and teams. You’ll lead with pragmatic trade-offs and mentor peers to raise engineering standards.

• Comprehensive health, life, and disability insurance
• Commute subsidy
• Employee stock ownership
• Competitive retirement/pension plans
• Generous vacation and personal days
• Volunteering and donation matching program

• Design, build, and operate services and APIs behind real-time collaborative editing, game publishing, and content delivery at scale
• Own features end to end from problem framing to production
• Evaluate approaches, break down complex problems, and lead the design with the team
• Work across the stack, including infrastructure as code, CI/CD, internal tooling, or frontend tweaks
• Ensure platform reliability by monitoring, diagnosing, and addressing root causes in production
• Leverage AI coding tools in daily work and guide the team on effective use
• Review code and designs, mentor engineers, and raise engineering standards

• Track record of building, operating, and owning backend services at production scale
• Strong proficiency in at least one modern backend language; willingness to learn others
• Deep knowledge of distributed systems, API design, data persistence, data consistency, and state management
• Hands-on experience with cloud platforms and containerized deployments
• Experience with real-time or multiplayer systems (e.g., WebSockets, collaborative editing)
• Strong communication, ability to work with technical and non-technical colleagues
• Comfort with ambiguity and with AI coding tools, able to critically review outputs

• Strong communication
• Mentoring and leadership
• Decision-making under ambiguity
• Real-time systems
• WebSockets or state synchronization
• Cloud platforms and container orchestration