Sr. Software Development Engineer

Who is 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.

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.

At Blueprint, we believe in the power of possibility and are passionate about bringing it to life. Whether you join our bustling product division, our multifaceted services team or you want to grow your career in human resources, your ability to make an impact is amplified when you join one of our teams. 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 skillsets 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 at Blueprint.

We are looking for a Sr. Software Development Engineer to join us as we build cutting‑edge technology solutions! This is your opportunity to be part of a team that is committed to delivering best in class service to our customers.

In this role, you will work on core operating system–level code, contributing to the development, maintenance, and evolution of a widely deployed commercial OS. You will focus primarily on C/C++ source code, backporting features and fixes to earlier releases, and migrating legacy test code into a modernized test framework.

The role is highly hands‑on and technical, with the majority of your time spent designing, implementing, and testing systems‑level code. You will collaborate with a distributed feature team to review changes, validate behavior across OS versions, and ensure code quality, security, and reliability r work will directly support critical platform functionality used globally.

• Develop, modify, and maintain operating system–level source code using C and C++
• Backport features, fixes, and security updates to prior OS releases while preserving stability and compatibility
• Migrate existing test code into a newly developed OS test framework
• Design, implement, and execute automated and manual tests to validate system behavior across versions
• Troubleshoot complex systems‑level issues and implement effective, performant solutions
• Participate in code reviews and contribute to engineering best practices and coding standards
• Collaborate with engineers across distributed teams to align on design decisions, priorities, and timelines
• Document technical designs, implementation details, and testing approaches as needed

• Bachelor’s degree in Computer Science, Software Engineering, or a related technical field, or equivalent practical experience
• Minimum 5+ years of professional experience developing software in C and C++
• Minimum 5+ years of experience in systems programming (e.g., operating systems, low‑level services, kernels, drivers, or similar)
• Strong understanding of operating system concepts, including memory management, concurrency, and performance considerations
• Proven ability to debug and resolve complex issues in large, existing codebases
• Experience working with distributed or remote engineering teams
• Strong verbal and written communication skills, with the ability to explain technical concepts clearly

• Experience working directly on commercial or large‑scale operating system codebases
• Background in security‑sensitive systems,…