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F5 Principal Engineer Software 
United States, Washington, Seattle 
842851994

Today

looking for a Principal Software Engineer who will provide technical vision, leadership, and hands-onto deliver high-scale, high-performance software for ourBIG-IP portfolio of products.

seeking a senior technical leader within complex, large-scale network

, and secure software.


  • Lead the design and development of highperformance, secure and scalable softwarefor F5’sBIG-IPcontrol plane and related

  • Drive architectural decisions, ensuring scalability, performance, and security across multi-cloudand on-premdeployments.

  • Mentor and guide senior and mid-level engineers, promoting engineering excellence and best practices.

  • Collaborate with cross-functional teams—including Product, UX, and Site

  • Reliability Engineering—to translate business requirements into robust, maintainable technical solutions.

  • Evaluate emerging technologies, frameworks, and approaches to improve the platform’s capabilities and developer productivity.

  • Lead deep technical reviews of architecture, design, and code to ensure the highest quality deliverables.

  • Partner with leadership to set technical roadmaps and standards fornetworksystems development.

  • Act as a thought leader forBIG-IPinternally and externally, including technical blogs,whitepapers, and conference presentations.

Minimum Qualifications

  • 10+ years of professional software development experience, including 5+yearsbuildingnetwork infrastructure

  • expertisein at least one modern programming language (Go, Java, Python, or similar) andproficiencyin multi-threaded and asynchronous programming.

  • Strong experience with cloud-nativearchitecture, microservices, Kubernetes, and containerized workloads.

  • Deep understanding of networking, security, APIs, and dataconsistencymodern application delivery

  • architectureand delivering complex projects.

  • Solid experience with CI/CD pipelines, observability, and operational excellence practices.

  • Bachelor’s orMaster’s degreein Computer Science, Engineering, or equivalent practical experience.


Preferred Qualifications:

  • Experience with multi-cloud platforms (AWS, Azure, GCP) and hybrid environments.

  • Network control planedesignin a highlyscalable andfaulttolerant environment

The Job Description is intended to be a general representation of the responsibilities and requirements of the job. However, the description may not be all-inclusive, and responsibilities and requirements are subject to change.

The annual base pay for this position is: $186,400.00 - $279,600.00

You may also be offered incentive compensation, bonus, restricted stock units, and benefits. More details about F5’s benefits can be found at the following link: