> Markdown version of [/jobs/ext/2708405-software-engineer-systems-level](https://www.wearedevelopers.com/jobs/ext/2708405-software-engineer-systems-level). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer - Systems Level - **Company:** Yubico - **Location:** San Francisco, CA, United States - **Experience:** Expert - **Salary:** $170,000.0 - $210,000.0 - **Contract:** Permanent contract - **Skills:** .NET Framework, Application Programming Interfaces (APIs), Computing Platforms, Public-Key Cryptography, C Sharp (Programming Language), Serialization, File Systems, Extensible Application Markup Language, PostgreSQL, Windows Presentation Foundation, Software Tools, Software Engineering, Software Systems, System Software, Systems Integration, Windows Desktop, Data Logging, Ios Frameworks, Kubernetes, Information Technology, Restful APIs, C++14, Code Restructuring, GPT - **Published:** September 4, 2026 - **Apply:** https://startup.jobs/sr-software-engineer-systems-level-yubico-inc-9770119 ## About the Role * Bachelor or MS in Computer Science or a relevant technical discipline or equivalent experience, including 5+ years of software engineering experience. * Familiarity with operating system internals and services, such as synchronization. primitives, efficient file system access, threading and thread safety, and logging facilities. * Proven experience of building system software using native and/or memory safe languages such as modern C++, C#, .Net. * Hands-on experience with REST API integrations. * Hands-on experience using AI tools such as Claude/Codex/ChatGPT. * Architecture and design knowledge and experience. * Knowledge and/or experience with asymmetric cryptography. * Experience with UI Frameworks (e.g., Avalonia UI, WPF (Windows Presentation Foundation) & XAML). * Experience working with CI/CD pipelines and hands-on experience with Kubernetes and GCP (or comparable cloud), ideally in production environments. * Thrives in a dynamic fast paced environment where you will be challenged to become better and expected to make a positive impact on Yubico Engineering. * Demonstrated ability to learn and apply new technologies., * Experience with writing and/or utilizing C/C++ libraries and software. * Experience with Postgres SQL. * Experience building and interacting with system level services. * Comfortable interacting with operating system APIs from application code, such as interacting with serial ports or block devices. * Comfortable working with binary serialization protocols and formats. Bonus Skills: * Experience developing software to control robotics (e.g., developing an orchestration engine controlling robotic arms). ## Description Yubico is looking for a Sr. Software Engineer who is innovative and has a passion for building security solutions and software. You will join our Production and Fulfillment Services (PFS) team. The PFS team develops the software systems that control our YubiKey production, fulfillment, and manufacturing. They build integrated end-to-end solutions for production software to enhance and scale our capabilities and ease of use for our operators and supervisors., * Experiment, create prototypes and refine your work based on user feedback, industry standards, and business needs. * Work collaboratively across functions with our Product Managers, Production, Hardware, and UX designers to bring the most user-friendly and streamlined software for our operations. * Hone your skills in designing and developing compelling user experiences using native and cross-platform technologies. * Expand your technical knowledge of the various security technologies and protocols that YubiKeys supports (e.g, FIDO2 / WebAuthn, FIDO U2F, PIV, etc.). ## Related Videos - [Understanding Kubernetes in a visual way](https://www.wearedevelopers.com/videos/100085-understanding-kubernetes-in-a-visual-way) - [ Evaluating AI models for code comprehension](https://www.wearedevelopers.com/videos/1462-evaluating-ai-models-for-code-comprehension) - [Software Engineering Social Connection: Yubo’s lean approach to scaling an 80M-user infrastructure](https://www.wearedevelopers.com/videos/1583-software-engineering-social-connection-yubo-s-lean-approach-to-scaling-an-80m-user-infrastructure) - [Instant KAI Sandboxes with vCluster: Multi-Tenant, Multi-Scheduler GPU Sharing](https://www.wearedevelopers.com/videos/100333-instant-kai-sandboxes-with-vcluster-multi-tenant-multi-scheduler-gpu-sharing) - [Streaming AI Responses in Real-Time with SSE in Next.js & NestJS](https://www.wearedevelopers.com/videos/1630-streaming-ai-responses-in-real-time-with-sse-in-next-js-nestjs) - [WeAreDevelopers LIVE - Chrome for Sale? Comet - the upcoming perplexity browser Stealing and leaking](https://www.wearedevelopers.com/videos/1331-wearedevelopers-live-chrome-for-sale-comet-the-upcoming-perplexity-browser-stealing-and-leaking) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 138 - Are you secure about this?](https://www.wearedevelopers.com/magazine/486-dev-digest-138-are-you-secure-about-this) - [Is Software Engineering Hard?](https://www.wearedevelopers.com/magazine/448-is-software-engineering-hard) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)