Senior Systems Software Engineer; C​/C++, Windows

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

Redmond, WA

Whois Blueprint?

We are a technology solutions firm headquartered in Bellevue, Washington, with a strong presence across the United States. Unified by a shared passion for solving complicated problems, our people are our greatest asset. We use technology as a tool to bridge the gap between strategy and execution, powered by the knowledge, skills, and the expertise of our teams, who all have unique perspectives and years of experience across multiple industries.

We’re bold, smart, agile, and fun.

Whatdoes Blueprintdo?

Blueprint helps organizations unlock value from existing assets by leveraging cutting‑edge technology to create additional revenue streams and new lines of business. We connect strategy, business solutions, products, and services to transform and grow companies.

Why Blueprint?

At Blueprint, we believe in the power of possibility and are passionate about bringing it to life. Whether you join our bustling product division or our multifaceted services team, you’ll grow your career while making an amplified impact. You’ll focus on solving unique business problems while gaining hands‑on experience with the world’s best technology. We believe in unique perspectives and build teams of people with diverse skill sets and backgrounds.

At Blueprint you’ll have the opportunity to work with multiple clients and teams, such as data science and product development, all while learning, growing, and developing new solutions. We guarantee you won’t find a better place to work and thrive than Blueprint.

In This Role

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.

Key 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 assay 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
• Customize system software to meet specific client or business requirements
• Work effectively in a Windows‑based development environment

Required Qualifications

• Bachelor’s degree in Computer Science, Computer Engineering, or a related technical field
• Minimum of 3+ years of professional software engineering experience
• 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
• Ability to work independently and ramp up quickly on complex codebases

Preferred Qualifications

• 5–7 years of experience in large‑scale systems software design and development
• Advanced debugging experience using tools such as Windows Debugger
• Hand…