Senior Network Automation Engineer

Who we are

DigiCert is a global leader in intelligent trust, helping organizations protect the digital interactions people rely on every day. From websites and cloud services to connected devices and critical systems, we make sure digital experiences are secure, private, and authentic.

Our AI-powered DigiCert ONE platform brings together certificates, DNS, and lifecycle management to help organizations stay ahead of risk as technology and threats evolve. Trusted by more than 100,000 organizations—including 90% of the Fortune 500—DigiCert helps businesses operate with confidence today while preparing for what’s next, including a quantum-safe future.

Job summary

We are seeking a Senior Network Automation Engineer with 8+ years of network engineering experience and deep expertise in Python, Ansible, Terraform, and REST APIs to design and build enterprise-grade automation solutions for our global DDoS mitigation network infrastructure. You will automate provisioning and management of BGP routing, GRE tunnels, VRFs, firewall policies, and multi-vendor network devices (Juniper MX/SRX, Arista) across multiple sites.

What you will do

• Design and build enterprise-grade network automation solutions to provision, configure, and validate network infrastructure at scale across multiple global locations

• Integrate network device APIs and automation protocols (Junos PyEZ, REST APIs, vendor-specific SDKs) to build programmatic workflows for device configuration, monitoring, and troubleshooting on Juniper MX/SRX and Arista platforms

• Build and maintain Jinja2 templates for generating network device configurations

• Build and maintain Terraform modules for AWS infrastructure and network resources

• Develop and maintain Python-based REST APIs and CLI tools for network provisioning and customer management

• Design and deploy serverless architectures using AWS Lambda, API Gateway, and CloudWatch for network automation APIs and event-driven workflows

• Build and maintain CI/CD pipelines (GitLab CI, AWX/Ansible Tower) for network changes with automated testing, validation, and rollback capabilities to ensure safe, reliable deployments

• Implement automated testing frameworks to validate network configurations, routing protocols (BGP, anycast routing), VLANs, VRFs, GRE tunnels, firewall policies, and DDoS mitigation rules before production deployment

• Manage MySQL/MariaDB databases for network configuration state and customer provisioning data

• Collaborate with cross-functional teams to deliver secure, observable, and scalable systems

• Participate in architecture reviews and code quality initiatives

• Contribute to operational excellence through logging, alerting, and performance tuning

• Be on call to support our infrastructure and services

What you will have

• 8+ years of experience in network engineering and automation

• 5+ years of hands-on Python experience for network automation

• Strong understanding of TCP/IP, BGP, OSPF, VLANs, VRFs, NAT, firewalls, and load balancers

• Hands-on experience automating network devices from vendors such as Juniper and Cisco

• Experience working with network device APIs and automation protocols (NETCONF, REST APIs, RESTCONF)

• Hands-on experience with Ansible for network automation and configuration management

• Experience with infrastructure-as-code tools, specifically Terraform, to manage and automate network and cloud resources

• 2+ years of AWS cloud experience (Lambda, API Gateway, RDS, VPC, CloudWatch, IAM)

• Experience designing, validating, and deploying network configuration changes at scale

• Experience integrating automation workflows into CI/CD pipelines (GitLab CI, Jenkins)

• Strong communication skills and a collaborative, proactive work style

Nice to have

• Experience with front-end frameworks like Angular/ReactJS

Benefits

• Generous time off policies

• Top shelf benefits

• Education, wellness and lifestyle support

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