Principal Software Engineer

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.

F5 Inc. seeks Principal Software Engineer in Louisville CO:

Job Duties: Administering UNIX based systems networking appliances public/private clouds and application delivery technologies. Engage with internal engineering teams to develop tooling frameworks to drive full observability and automation of the environment. Enhance data-driven engineering culture by providing statistical trends and analysis using real service data. Design and implement zero-downtime deployment approaches real-time logging alerting and monitoring solutions and code instrumentation utilizing the features of NGINX Plus. Coordinate with solution architects to design secure highly available solutions that meet objectives automating solutions whenever possible. Develop solutions to identify reliability risks monitor application growth and triage production issues. Part-time telecommuting is an option. Hybrid work from company office in Louisville CO.

Minimum Requirements: Five (5) years of experience in job offered or in any occupation in a related field.

Special Skill Requirements:

1. Programming languages - CIC Python Go. Shell scripting (including restricted I embedded shells).

2. Deep understanding of UNIX-based systems with hands-on experience in administering large fleets of servers under FreeBSD Linux Solaris OS running on different architectures (Intel ARM SPARC PowerPC).

3. SDLC (Software Development Life Cycle) methodology in software release engineering; Agile/Scrum approach; collaboration and cross-functional teamwork (Jira Gitlab Projects).

4. NGINX Plus - extended proprietary software built on top of NGINX open-source core providing L4/L7 load balancing caching reverse proxy dynamic reconfiguration and live activity monitoring capabilities; core component of various F5/NGINX product offerings (F5 NGINX One Console F5 NGINXaaS for Azure F5 NGINXaaS for Google F5 WAF F5 NGINX Ingress Controller).

5. Virtualization technologies and hypervisors (Xen VMWare KVM OpenVZ LXC); security/isolation and resource management concepts of containers (namespaces control groups); orchestration and management platforms (Kubernetes OpenShift EKS/AKS).

6. Implementing ADC (Application Delivery Controller) solutions in highly distributed shared hosting environments backed by network appliances from Cisco/Crescendo dynamic SDN (Software-Defined Networking); leveraging dynamic routing protocols at scale (OSPF BGP); managing L4/L7 load balancers (HAproxy Nginx Envoy Traefik).

7. Public and private clouds - AWS Azure GCP OCI; focused on building multi-cloud Saas platforms and services.

8. DevOps processes tooling and laaS - Cl/CD workflows in GitHub/GitLab; administering self-hosted runners; GitOps (FluxCD); Terraform Terragrunt; Ansible.

9. Database engines - relational (PostgreSQL MySQL); time-series/NoSQL (Prometheus/Mimir Cassandra ScyllaDB); Clickhouse.

10. SRE/observability/monitoring/incident management - LGTM stack (Loki Grafana Tempo Mimir); Grafana Cloud; Pagerduty; Sentry; Datadog; ELK stack (Elasticsearch Logstash Kibana).

Part-time telecommuting is an option. Hybrid work from company office in Louisville CO.

Salary: $225680 - $254400 per annum. Benefits: F5 offers competitive pay 401k and other benefits: a resume with references using the apply button on this posting or by email at: at Req.# L24-146409

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You may also be offered incentive compensation bonus restricted stock units and benefits. More details about F5s benefits can be found at the following link: 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 @) or auto email notification from Workday (ending with or @).

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 .