Software Engineer III

At F5, we strive to bring a better digital world to life. Our teams empower organizations across the globe to create, secure, and run applications that enhance how we experience our evolving digital world. We are passionate about cybersecurity, from protecting consumers from fraud to enabling companies to focus on innovation. 
 

Everything we do centers around people. That means we obsess over how to make the lives of our customers, and their customers, better. And it means we prioritize a diverse F5 community where each individual can thrive.

Software Engineer III - BIG‑IP Shared Components Team 

Role Summary 
At F5, we make apps faster, smarter, and safer…from anywhere. 
Join the BIG‑IP Shared Components Team and lead the maintenance and modernization of BIG‑IP’s common binaries, daemons, libraries, and scripting ecosystems. You will set technical direction, drive security and performance standards, and mentor engineers—ensuring our foundation remains robust, 64‑bit ready, and future‑proof. 

About the Team 

We own the shared pieces everyone depends on. Our mission is to provide secure, stable, and performant building blocks—so BIG‑IP features can innovate without worrying about the platform’s core. 

Responsibilities 

• Own technical strategy and roadmaps for shared binaries/daemons, native system services, libraries, and scripting components (Perl/Tcl/Python, JS, Java). 

• Ensure ABI stability, compatibility, and safe evolution of shared libraries; author and review C/C++ APIs; manage risk during architecture/OS/toolchain changes. 

• Define and enforce coding standards, quality gates, and test strategies (unit/functional/integration/reliability/perf) for native and managed code bases. 

• Lead security posture for shared components: SBOM, supply‑chain scanning, patch cadence, and threat modeling. 

• Drive service operability: health checks, resource limits, observability hooks, rollout/rollback strategies for long-running daemons and system services. 

• Mentor engineers and collaborate across platform, product, QA, and release teams. 

 

Qualifications 

• Expert‑level C/C++: Minimum 6+ years developing and maintaining production C/C++ systems on Linux, including ownership of large, long‑lived codebases, APIs, and shared libraries. 

• Linux and Systems Internals: expert knowledge of Linux internals, memory management, process lifecycle, 32/64 bit arch differences. 

• Deep Systems Expertise: ELF internals, C/C++ ABI compatibility, symbol versioning, shared‑lib migration strategies. 

• Advanced Toolchain & Performance: C/C++ compiler/linker optimizations (LTO, PGO), sanitizers (ASan/TSan/UBSan), perf tooling (perf, flame graphs) 

• Security: Hands‑on with vulnerability management, remediation planning, secure coding reviews, and compliance. 

• Testing Governance: Define coverage targets and CI gates; lead failure analysis and root‑cause investigations. 

• Technical Leadership: Roadmapping, estimation, risk management, cross‑team alignment; proven mentorship. 

#LI-ZB1

 

 

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: $137,600.00 - $206,400.00

F5 maintains broad salary ranges for its roles in order to account for variations in knowledge, skills, experience, geographic locations, and market conditions, as well as to reflect F5’s differing products, industries, and lines of business. The pay range referenced is as of the time of the job posting and is subject to change.

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: https://www.f5.com/company/careers/benefits. F5 reserves the right to change or terminate any benefit plan without notice. 

Please note that F5 only contacts candidates through F5 email address (ending with @f5.com) or auto email notification from Workday (ending with f5.com or @myworkday.com).

Equal Employment Opportunity

It is the policy of F5 to provide equal employment opportunities to all employees and employment applicants without regard to unlawful considerations of race, religion, color, national origin, sex, sexual orientation, gender identity or expression, age, sensory, physical, or mental disability, marital status, veteran or military status, genetic information, or any other classification protected by applicable local, state, or federal laws. This policy applies to all aspects of employment, including, but not limited to, hiring, job assignment, compensation, promotion, benefits, training, discipline, and termination.  F5 offers a variety of reasonable accommodations for candidates. Requesting an accommodation is completely voluntary. F5 will assess the need for accommodations in the application process separately from those that may be needed to perform the job. Request by contacting accommodations@f5.com.