Senior Platform Security Engineer – Multi-Cloud & Kubernetes

F5 Networks, Inc.; Reston (VA); Hybrid; USD 180,000 - 269,000; Full time

Job summary

F5 Networks, Inc. is seeking a Senior Software Engineer to join the Platform Security team within F5 Distributed Cloud.

You will design and build foundational security services that protect a globally distributed Kubernetes-based platform. You will work on authentication, authorization, certificate, secret, and key management at scale, writing production-grade Golang code and collaborating with product, SRE, and other engineering groups.

Qualifications

• 6+ years of professional software development experience in C++, Java, or Golang.
• Advanced knowledge of and hands-on experience with Linux.
• Advanced, hands-on experience with Kubernetes.
• Proven experience building platform security services in at least one of the following domains: authentication, authorization, certificate management, secret management, or key management.
• Strong fundamentals in distributed systems, system design, and writing secure, reliable code.
• Hands-on experience with AI-assisted development tools (Copilot, Claude, Codex, or similar).
• U.S. Citizenship Required: Due to FedRAMP compliance obligations, this role requires the candidate to be a U.S. citizen.
• Nice to Have Experience with public cloud platforms such as AWS or GCP.
• Hands-on experience with HashiCorp Vault, Keycloak.
• Experience contributing to FedRAMP compliance initiatives.
• Experience with Integrating AI/ML or LLM capabilities into production (AI agents, RAG, ML-driven detection).
• AI security best practices (securing AI/ML pipelines, mitigating prompt injection / model misuse).

Responsibilities

• Design, develop, and operate highly available platform security services that form the trust foundation of F5 Distributed Cloud.
• Build and enhance core security capabilities across one or more domains: authentication, authorization, certificate management, secret management, and key management.
• Write high-quality, well-tested, production-grade code (primarily Golang) for distributed, performance-sensitive systems.
• Deploy and operate services on Kubernetes across multi-cloud and edge environments.
• Collaborate with cross-functional teams—product, SRE, and other engineering groups to deliver secure, scalable solutions.
• Participate in design reviews, code reviews, and threat modeling to uphold a high security and engineering bar.
• Contribute to compliance and audit readiness efforts (e.g., FedRAMP, PCI) for platform security services.
• Mentor junior engineers and help drive engineering best practices within the team.

Skills

Golang

C++

Java

Linux

Tools

Kubernetes

HashiCorp Vault

Keycloak

AWS

GCP

Job description

F5 Networks, Inc. is seeking a Senior Software Engineer to join the Platform Security team within F5 Distributed Cloud.

You will design and build foundational security services that protect a globally distributed Kubernetes-based platform. You will work on authentication, authorization, certificate, secret, and key management at scale, writing production-grade Golang code and collaborating with product, SRE, and other engineering groups.