Senior Systems Software Engineer (C/C++, Windows)

Blueprint Technologies•Redmond, WA

2h•$100,000 - $120,000

About The Position

In this role, you will work as a hands-on Software Engineer responsible for designing, modernizing, and maintaining complex systems-level software. You will analyze legacy implementations, understand existing architectures end-to-end, and drive modernization efforts using newer APIs and design patterns. The role requires strong independent problem-solving skills, deep debugging expertise, and the ability to deliver high-quality, production-ready code across the full software lifecycle. You will collaborate with cross-functional stakeholders to gather requirements, translate them into technical designs, implement solutions, and ensure stability through rigorous testing and post-deployment validation. This role is best suited for engineers who enjoy working close to the operating system, debugging low-level issues, and improving large, long-lived software systems.

Requirements

Bachelor’s degree in Computer Science, Computer Engineering, or a related technical field
Minimum of 3+ years of professional software engineering experience
Strong proficiency in reading, writing, and maintaining production-quality code
Solid foundation in computer science fundamentals, including data structures, algorithms, and software design
Hands-on experience developing and debugging systems-level software in C and C++
Experience troubleshooting and maintaining both new and legacy production systems
Strong understanding of operating systems concepts and low-level system behavior
Experience performing unit testing, defect analysis, and production issue resolution
Ability to work independently and ramp up quickly on complex codebases

Nice To Haves

5–7 years of experience in large-scale systems software design and development
Experience modernizing legacy systems or APIs
Advanced debugging experience using tools such as Windows Debugger
Hands-on experience with instrumentation-based analysis and trace collection techniques (e.g., WPP/ETW)
Proven ability to diagnose complex issues in production environments
Experience working on long-lived, enterprise-scale software platforms
Strong documentation skills for architecture, design, and testing artifacts

Responsibilities

Design, develop, implement, test, and maintain systems-level and application software
Analyze and fine-tune complex software implementations to improve performance, reliability, and maintainability
Review and assess enhancement requests, translating requirements into technical designs and solutions
Read, understand, and document the architecture of large and complex legacy systems
Modernize existing implementations by redesigning components using newer APIs and standards
Write clean, efficient, and maintainable C and C++ code aligned with established engineering best practices
Debug and resolve issues in legacy and modern systems using instrumentation, tracing, and advanced debugging tools
Develop detailed software specifications, test plans, and test data
Perform unit testing and support system, user, and implementation testing through migration packages
Conduct quality assurance reviews and ensure adherence to coding and design standards
Perform post-implementation validation and resolve defects identified during testing or deployment
Customize system software to meet specific client or business requirements
Work effectively in a Windows-based development environment