Senior Software Development Engineer

Blueprint is a technology solutions firm headquartered in Bellevue, Washington, focused on unlocking value from existing assets through technology. In this role, you will be part of a platform engineering team responsible for delivering and validating new operating system-level security capabilities and troubleshooting complex failures.

Responsibilities:

• Design, develop, implement, test, and maintain complex software systems and security-related features
• Evaluate new operating system security features for application compatibility and rollout readiness
• Troubleshoot failures, perform root-cause analysis, and resolve issues across new and legacy systems
• Analyze quality and reliability data to assess feature health and delivery readiness
• Fine-tune and improve sophisticated software implementations and enhancements
• Gather and analyze system requirements; document detailed technical specifications
• Review enhancement requests and translate them into scalable software solutions
• Implement system-level software and customize solutions to meet evolving requirements
• Develop detailed test plans, create test data, and conduct unit and integration testing
• Modify existing programs to meet new standards and perform validation testing
• Create migration and deployment packages for system, user, and production testing
• Perform quality assurance reviews and post-implementation validation
• Partner with cross-functional teams to ensure continuous delivery and feature quality

Requirements:

• Bachelor's degree in Computer Science, Computer Engineering, or a related technical field
• 5–7 years of professional software engineering experience
• Strong foundation in computer science fundamentals, including data structures, algorithms, and software design
• Experience designing and developing large-scale systems software
• 5–6 years of experience analyzing quality metrics and data to assess system or feature health
• 5–6 years of experience troubleshooting complex issues, performing root-cause analysis, and resolving failures
• Experience working with operating system security concepts (e.g., platform security, system integrity, access controls, or similar)
• Proven ability to independently investigate problems, diagnose issues, and drive resolution
• Experience performing in-depth troubleshooting and unit testing across both new and legacy production systems
• Strong problem-solving skills and experience with defect diagnosis and resolution
• Experience designing and executing experiments or A/B testing
• Experience evaluating metrics and interpreting quality or performance variations
• Background in continuous delivery environments or feature rollout validation
• Familiarity with application compatibility testing at the platform or OS level