Principal Software Engineer

F5•Boulder, CO

2d•$225,680 - $254,400•Hybrid

About The Position

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.

Requirements

Five (5) years of experience in job offered or in any occupation in a related field.
Programming languages - CIC++, Python, Go. Shell scripting (including restricted I embedded shells).
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).
SDLC (Software Development Life Cycle) methodology in software release engineering; Agile/Scrum approach; collaboration and cross-functional teamwork (Jira, Gitlab Projects).
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).
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).
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).
Public and private clouds - AWS, Azure, GCP, OCI; focused on building multi-cloud Saas platforms and services.
DevOps processes, tooling, and laaS - Cl/CD workflows in GitHub/GitLab; administering self-hosted runners; GitOps (FluxCD); Terraform, Terragrunt; Ansible.
Database engines - relational (PostgreSQL, MySQL); time-series/NoSQL (Prometheus/Mimir, Cassandra, ScyllaDB); Clickhouse.
SRE/observability/monitoring/incident management - LGTM stack (Loki, Grafana, Tempo, Mimir); Grafana Cloud; Pagerduty; Sentry; Datadog; ELK stack (Elasticsearch, Logstash, Kibana).

Responsibilities

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.