Principal Site Reliability Engineer - Network (Remote)

Join a dynamic team at the pulse of global markets, where we deliver innovative software and service solutions for essential financial reporting and capital markets transactions. At DFIN, we are a values-driven organization that empowers you to build a fulfilling career while bringing your authentic self to work every day. Our "Win as One" mentality ensures that our team's success is directly linked to Client, Shareholder and Employee Satisfaction.
Recognized as one of AMERICA'S MOST LOVED WORKPLACES® for five consecutive years and a Built In Best Places to Work for six years, we are committed to our employees' total well-being. Enjoy competitive compensation, a flexible workplace, comprehensive benefits, and opportunities for professional growth. Bring your passion and talents to DFIN - because being YOU thrives here.
Summary:
We are looking for technical team members at all levels who want to push themselves to deliver best in market SaaS solutions. We offer a challenging environment where you will have to grow, adapt and use your skills consistently. Our customers rely on us in the moments that matter. Engineering delivers on that promise.
The Principal Site Reliability Engineer - Network is responsible for ensuring the networks in our SaaS products are fast, stable, secure and optimized for our customers. SRE's at DFIN take on availability, performance, managing change, monitoring, response and are guardians of non-functional requirements.
You either have a network infrastructure background with a programmatic, automated mindset or are someone that comes with a software engineering background with extensive network infrastructure experience. The SRE goal is to build automated systems that reduce or eliminate manual work to keep our products up and running and performing optimally. We are looking for someone who thrives on collaboration within the team and across other groups and can operate independently to deliver solutions.
Responsibilities:

• Champion and implement a culture of SRE to maintain a reliable and performant network infrastructure in DFIN SaaS products
• Design and implement secure, redundant, fault-tolerant networks in DFIN SaaS products; you understand networking protocols and network elements and how they are integrated together to create resilient, fault-tolerant networks in SaaS products
• Create and maintain network diagrams
• Choose and configure common network elements in SaaS product network topologies including load balancers, firewalls, DNS, etc.; provision route tables and routing paths
• Define, lead the implementation, and maintain SaaS product network monitoring and alerting to prevent client impacting issues and ensure network availability, performance and scalability to maintain SLOs and SLAs
• Identify and remediate issues in SaaS product network infrastructure (high latency, timeouts, dropped connections, etc.) using diagnostic tooling and network traces; perform thorough Root Cause Analysis (RCA); drive vendor partners to provide strategic guidance and quality assurances by requiring immediate defect fixes, software updates, etc., as necessary to ensure an ideal customer experience
• Serve as a senior escalation point for SaaS product network issues and collaborate with DFIN IT to integrate SaaS products into broader DFIN network topologies
• Automate everything including system operational runbooks
• Dive deep into technology and stay on the forefront of the latest network analysis tools, technologies, and strategies; help evaluate, prototype, and integrate them into work processes
• Perform with broad independence and deliver on project milestones and tasks on schedule while communicating progress regularly
• Build strong relationships with SRE team members and software engineering teams to hold each other accountable to expectations
• Learn continuously and apply lessons learned
• Evangelize best practices, eliminate bottlenecks, and improve process
• Participate in on-call duties 365/24/7 and lead the triage and RCA of production incidents

Qualifications:

• Thorough understanding of common networking protocols including IP, TCP/IP, ICMP, DNS, DHCP, ARP, SSL, TLS and how to diagnose network issues by isolating problems at the protocol layer within specific network elements
• Domain Network Sytem Resolution expert
• Firewall engineering - Strong experience configuring, troubleshooting and maintaining Palo Alto (self-hosted) firewalls including policies to diagnose traffic drops/blocks within the overall network fabric
• Network traffic analysis - Strong experience with network capture tools (e.g. Wireshark) to diagnose and solve network latency and failure problems and ensure network throughput in complex network fabrics including firewalls and routers
• SDWAN - Strong experience configuring, troubleshooting and maintaining Silverpeak SDWANs (self-hosted) including policies to diagnose traffic drops/blocks within the overall network fabric
• 5+ years experience with cloud (Azure) product network design and network element configuration including provisioning of routing tables and creating and maintaining network diagrams
• 5+ years experience monitoring and preventing issues in SaaS network topologies in the cloud (Azure)
• 5+ years experience as a global admin of cloud (Azure) including cloud cost management
• 5+ years experience writing scripts in PowerShell or Python/Bash to automate system operations as runbooks for Windows or Linux environments.
• 5+ years experience supporting public client facing revenue generating systems
• Strong DevOps focus and experience building and deploying Infrastructure as Code with Terraform or similar technology
• Experience planning, coordinating, developing and executing all stages of post deployment verification test scripts
• Experience securing Windows or Linux systems in 24x7 production environment
• Experience with containerization and managing Kubernetes clusters (AKS or EKS)
• BS in Computer Science or equivalent work experience.

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