Principal Site Reliability 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

The Platform Ops team within CloudOps is responsible for the reliability, scalability, and modernization of DigiCert’s cloud infrastructure. As a Principle SRE, you will own the intersection of software engineering and operations—driving automation-first practices, reducing toil, and accelerating our cloud transformation across AWS, Azure, and GCP environments.

You will be a technical force multiplier: raising reliability standards across the organization, defining SLOs that matter, and building the internal platforms and tooling that enable product teams to ship with confidence.

What you will do

Reliability Engineering

Define, implement, and own SLIs, SLOs, and error budgets for critical platform services

Lead blameless post-mortems and drive systemic reliability improvements across the platform

Design and implement observability pipelines (metrics, logs, traces) using tools such as Splunk, Prometheus, Grafana, or OpenTelemetry

Participate in on-call rotation and serve as an incident commander for P0/P1 events

Cloud Modernization

Architect and execute migration strategies from legacy infrastructure to cloud-native patterns (containers, serverless, managed services)

Champion adoption of Kubernetes, service mesh, and managed cloud services (EKS, GKE, AKS)

Evaluate and introduce emerging cloud technologies that improve availability, cost efficiency, and developer experience

Partner with architecture and security teams to embed reliability and compliance into platform design

Automation Platform Development

Build and maintain infrastructure-as-code using Terraform across multi-cloud environments

Develop internal tooling, self-service platforms, and golden-path templates that reduce operational burden for development teams

Automate operational workflows including provisioning, scaling, patching, and secret rotation

Contribute to and maintain CI/CD pipelines (GitHub Actions) to enable safe, frequent deployments

Engineering Leadership

Mentor mid-level engineers on SRE principles, distributed systems, and infrastructure best practices

Collaborate cross-functionally with product, security, and compliance teams to deliver on platform roadmap commitments

Document architectural decisions, runbooks, and platform standards; raise the engineering bar through code and design reviews

What you will have

5+ years of experience in SRE, platform engineering, or infrastructure engineering roles

Deep proficiency in at least one major cloud provider (AWS, GCP, or Azure) with working knowledge of multi-cloud environments

Strong software engineering skills in Python, Go, or Bash; comfortable writing production-grade automation and tooling

Hands-on Kubernetes experience: cluster operations, workload management, networking (CNI/service mesh), and security (RBAC, pod security)

Infrastructure-as-code expertise with Terraform or equivalent; experience with GitOps workflows

Proven experience designing and operating observability systems and responding to production incidents at scale

Strong understanding of networking fundamentals: DNS, TLS/PKI, load balancing, and zero-trust networking concepts

Nice to have

Experience in PKI, certificate lifecycle management, or security-adjacent infrastructure

Familiarity with compliance frameworks such as SOC 2, FedRAMP, or ISO 27001 in cloud environments

Prior experience driving cloud migration or modernization programs at scale

Contributions to open-source infrastructure or platform projects

AWS/GCP/Azure professional-level certifications (e.g., AWS Solutions Architect Professional, CKA/CKS)

What success looks like

In your first 90 days, you’ll have a deep understanding of our platform’s reliability posture, contributed to at least one automation or modernization initiative, and be a trusted voice in incident response. Within a year, you’ll have measurably reduced toil, improved SLO attainment across key services, and delivered at least one major platform capability that enables product teams to move faster.

Working at DigiCert CloudOps

Greenfield modernization: we are actively migrating workloads and building new platform capabilities—you’ll shape the architecture, not just maintain it

Engineering-first culture with a strong bias toward automation, GitOps, and platform thinking

Cross-functional visibility: PlatformOps partners directly with product, security, and compliance—your work has organization-wide impact

Competitive compensation, equi…