Senior Software Engineer, Performance | Scalability and Systems Engineering

NinjaOne is hiring a Senior Software Engineer to improve the performance, reliability, and scalability of its systems. The role investigates bottlenecks and delivers code, database, and architecture optimizations while building performance frameworks, tooling, and engineering standards.

Responsibilities:

• Performance Research and Development: Investigate system behavior to find bottlenecks, analyze the results, and drive optimizations across application code, database, and architecture. Work directly with engineering teams to design, implement, and ship the fixes
• Performance Frameworks and Tooling: Design, build, and maintain performance testing and data generation frameworks that surface actionable insights, using k6, JavaScript, Grafana, and InfluxDB. Automate these in CI/CD pipelines
• Performance Best Practices: Define and evolve standards for performance optimization, scalability, and measurement. Partner with engineering teams to shape scalability approaches and performance strategies
• Documentation: Develop and maintain technical documentation, architectural decision records, and performance standards
• Other duties as needed

Requirements:

• Bachelor's degree in Computer Science, Computer Engineering, Information Technology, or equivalent work experience
• 6+ years of experience as a Software Engineer, with hands-on contributions to production code
• Strong understanding of system design and architecture: how the components of a system fit together (load balancers, services, datastores, caches) and how data flows through them
• Strong background in application optimization, query optimization, and performance debugging, with a solid grasp of performance methodology
• Deep experience with relational databases, including execution plan analysis, indexing strategies, and partitioning
• Experience debugging distributed systems and container-native environments
• Experience with asynchronous design and scaling patterns such as message brokers, event queuing, and event streaming
• Experience with at least one major cloud platform (AWS, Azure, or GCP)
• Proficient in scripting for automation and observability (Bash, Python, or similar), and experience building automation and pipelines
• Excellent troubleshooting and communication skills across technical and non-technical teams
• This position is NOT eligible for Visa sponsorship
• PostgreSQL experience is a plus
• AWS is a plus
• Nice to have: experience with k6 or other load test frameworks, and JavaScript