Senior Software Engineer - Boot Verify

Description
About the Role
As a Senior Software Engineer at NinjaOne, you will bring deep expertise in Windows boot processes and systems engineering to strengthen our existing boot verification service. This service validates the integrity of Windows machine image backups by launching them in a hypervisor with a custom virtual disk layer that streams only the blocks accessed during startup. You'll work alongside an established team, contributing advanced knowledge and solving the toughest technical challenges to ensure our platform delivers reliable, high-confidence backup verification at scale.
Location - We are flexible on remote working from home, if you are located in the USA and reside in one of the following states - CA , CO , CT , FL , GA , *IL , KS , M E , MA , NJ , NC , NY , OR , TN , TX , VA , and WA . We have physical offices in Austin, TX and Tampa, FL, if you prefer a hybrid option.
We hire the best software engineers, but experience in our stack can't hurt : NinjaOne is built on Java , Kotlin , C++ , Golang and Postgres ; supporting millions of user endpoints and running as a scalable cloud service in AWS . Knowing large-scale datastore bottlenecks, asynchronous application design and client-server architecture will help you.
What You'll be Doing

• Windows Boot SME ( Subject Matter Expert ) : you are a Windows boot process expert, helping the team diagnose and resolve complex issues that arise during backup verification. Extend and refine our custom virtual block device implementation to optimize I/O efficiency and compatibility with Windows workloads. Guide the team in debugging hard-to-diagnose Windows boot failures, such as BCD errors, driver incompatibilities, or kernel initialization issues. Improve automation, monitoring, and reporting of verification outcomes, with a focus on Windows-specific signals and diagnostics. Investigate and resolve issues with Windows boot failures (e.g., BCD errors, driver incompatibilities, corrupted system files). Document system architecture, design tradeoffs, and operational procedures for Windows boot verification.

• Software Engineering : collaborate with engineers across storage, infrastructure, and product teams to enhance system reliability and integration. Mentor teammates by sharing knowledge of Windows internals, virtualization, and storage systems. Participate in peer code reviews, architecture discussions, and technical decision-making.

• Other duties as needed

About You

• Bachelor's degree in Computer Science , Engineering, or a related field ; or equivalent professional experience.
• Minimum of 10 years of software development experience , building SaaS software products .

• 5+ years of expertise in Windows internals and boot processes.
• Deep understanding of Windows internals: BIOS/UEFI, bootloaders, BCD (Boot Configuration Data), kernel initialization, drivers, and filesystem access (NTFS).
• Experience diagnosing Windows system failures using logs, crash dumps, and recovery tools.
• Familiarity with block device interfaces, storage protocols, and how Windows accesses disks during startup.

• Strong programming skills in C++
• Python experience will make you a standout candidate.
• Hands-on experience with virtualization , emulation technologies such as: QEMU , KVM, Xen, VMware, and VirtualBox.
• Experience with distributed storage systems, for example S3-compatible object storage ; is a strong plus.
• Your knowledge of containerization and orchestration tools such as Docker and Kubernetes for managing isolated workloads.
• Excellent debugging, problem-solvin g skills.
• Your ability to collaborate across product , infrastructure, and support teams with a high level of effective communication .

About Us
NinjaOne automates the hardest parts of IT to deliver visibility, security, and control over all endpoints for more than 3 0,000 customers. The NinjaOne automated endpoint management platform is proven to increase productivity, reduce security risk, and lower costs for IT teams and managed service providers. NinjaOne is obsessed with customer success and provides free and unlimited onboarding, training, and support. NinjaOne is #1 on G2 in endpoint management, patch management, remote monitoring and management, and mobile device management.
What You'll Love
We are a collaborative, kind, and curious community.
We honor your flexibility needs with full-time work that is hybrid remote.
We have you covered with our comprehensive benefits package, which includes medical, dental, and vision insurance.
We help you prepare for your financial future with our 401(k) plan.
We prioritize your work-life balance with our unlimited PTO.
We reward your work with opportunity for growth and advancement.
Additional Information
This position is NOT eligible for Visa sponsorship.
*Due to operational policies, NinjaOne is unable to hire for this role within the city limits of Chicago. We will consider all qualified candidates who reside outside of the city proper or are willing to self- relocate.
Starting pay for the successful applicant depends on a variety of job-related factors, including but not limited to location, market demands, experience, job-related knowledge, and skills. The benefits available for this position include medical, dental, vision, 401(k) plan, life insurance coverage and PTO. For roles based in California , Colorado, New Jersey, or Washington the base salary hiring range for this position is $ 15 0,000 to $ 210 ,000 per year.
For roles based in New York, the base salary hiring range for this position is $ 15 0,000 to $ 21 0,000 per year.
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, marital status, veteran status, or any other status protected by applicable law. We are committed to providing an inclusive and diverse work environment.
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