Senior DevOps Engineer

Who we are DigiCert is a global leader in intelligent trust. We protect the digital world by ensuring the security, privacy, and authenticity of every interaction. Our AI-powered DigiCert ONE platform unifies PKI, DNS, and certificate lifecycle management, to secure infrastructure, software, devices, messages, AI content and agents. Learn why more than 100,000 organizations, including 90% of the Fortune 500, choose DigiCert to stop today’s threats and prepare for a quantum-safe future at www.digicert.com Job summary We are seeking a Senior DevOps Engineer who will play a role in updating the state of our infrastructure, automation, and operational excellence. This role requires a deep understanding of systems, networking, monitoring, and security, with a strong bias toward automation, reliability and scale. The ideal candidate will be a technical leader, helping to shape the direction of infrastructure and tooling. What you will do • Implementation of infrastructure automation, monitoring, and system reliability practices committed to providing 100% service availability. • Able to perform forensic system administration, troubleshooting unfamiliar Linux systems and services. • Demonstrates a SecOps mindset with a focus on secure automation and hardened Linux system administration. • Champion the use and advancement of DevOps best practices including CI/CD, infrastructure as code, and zero-touch provisioning. • Utilize best practices in release management, incident management, capacity planning, and operational readiness. • Instrumentation of services with visualization to speed triage (lower MTTR) allowing no direct access to systems. • Exerts technical influence horizontally—up and laterally to fellow seniors, and down to the team. • Acts as a mentor to DevOps and engineering team members; share knowledge and foster a culture of learning and continuous improvement. • Proactively identify and implement opportunities to increase system resiliency. • Implement technical direction around infrastructure, cloud, networking (BGP), and automation strategy. • Participate in on-call rotation, demonstrating strong customer empathy and responsiveness to incidents. • Own and improve standard operating procedures and system documentation. • Research, prototype, and implement new technologies across cloud, virtualization, and hardware platforms. What you will have • Strong Linux systems administration background with a deep understanding of how Linux interacts with hardware (CPU, memory, disk, networking). • Advanced proficiency in scripting and automation using Ansible, Bash, Python, Packer, and Terraform. • Hands-on experience with AWS services (EC2, IAM, VPC, etc.) and provisioning tools like Terraform and Packer. • Experience with datacenter operations including racking, stacking, and remote system management. • Proven ability to manage and configure systems at scale with zero-touch provisioning approaches. • Experience managing monitoring systems and developing custom dashboards for observability. • Solid understanding of networking within a linux environment (Router -> Switch -> Server -> Virtualization -> Linux -> Service) ; BGP and DNS experience is a plus. • Passion for operational excellence, security, and performance. • Ability to self-manage, communicate effectively, and collaborate with diverse technical teams. • Willingness and ability to learn new technologies as required. Nice to have • Experience with Kentik, Splunk, or similar network visibility and observability platforms. • Familiarity with modern CI/CD tools and pipeline architecture. • Willingness and ability to learn new languages as required. • Experience in designing, developing, and maintaining RESTful APIs following coding best practice