Full-Time

Senior Network Engineer

Network Operations

Updated on 5/29/2026

Five9

Five9

1,001-5,000 employees

Cloud-based contact center software provider

Compensation Overview

$104k - $289.3k/yr

+ Bonus + Stock

Remote in USA

Remote

Hybrid option available for candidates within 50 miles of San Ramon; 3 days onsite per week.

Category
DevOps & Infrastructure (1)
Requirements
  • Bachelor's degree in computer science or a related technical field preferred, or equivalent practical experience.
  • Proven technical expertise in fast-paced, dynamic, production environments supporting mission-critical infrastructure.
  • Extensive hands-on experience and advanced troubleshooting capabilities with data center fabric and software-defined networking (SDN) technologies, including VXLAN, NX-OS, OpenStack Neutron, Calico (Kubernetes), and enterprise routing and switching.
  • 8+ years of experience in technology roles, including 3+ years serving as a technical subject matter expert.
  • Strong understanding of, with hands-on experience with dynamic routing protocols, particularly BGP.
  • Demonstrated experience developing root cause analyses and implementing error prevention and corrective action procedures.
  • Experience defining, measuring, and reporting site reliability using SLI/SLO metrics.
  • Proven experience designing, implementing, or operating large-scale data centers and complex infrastructure environments.
  • Hands-on knowledge and operational experience with Cisco Nexus, F5, and Palo Alto platforms.
  • Experience managing and operating public cloud networking environments; Google Cloud Platform (GCP) and AWS experience preferred.
  • Strong experience with incident response, change management, and operational governance practices.
  • Demonstrated project management skills with the ability to manage multiple initiatives in parallel.
  • Excellent communication skills, with the ability to clearly represent technical domains and team outcomes to senior leadership.
  • Proven experience automating infrastructure processes and deployments.
  • Demonstrated ability to drive and scale a culture of automation across engineering and operations teams.
Responsibilities
  • Partner with cross-functional stakeholders to design and deliver next-generation data center fabric architectures, leveraging technologies such as VXLAN, Cisco Nexus Dashboard, Kubernetes, and AI/ML-enabled networking.
  • Provide technical leadership and mentorship to a team of engineers, strengthening troubleshooting capabilities, operational rigor, and adoption of network engineering best practices.
  • Drive automation strategy and execution using Ansible, Terraform, and CI/CD pipelines, including the design, deployment, and continuous improvement of automation for high-impact operational and reliability use cases.
  • Own and support all operational aspects of network security infrastructure, including operating system maintenance, vulnerability management, capacity planning, lifecycle management, and certificate administration.
  • Track and manage projects, processes, and technology initiatives across the team, ensuring alignment, visibility, and timely execution.
  • Analyze historical network incidents to identify systemic issues, perform root cause analysis, and implement automated remediation to prevent recurrence.
  • Lead the review, analysis, and execution of network change requests within the data center fabric domain, ensuring adherence to change management and risk mitigation standards.
  • Develop and report operational and performance metrics using observability platforms such as Prometheus, Grafana, and ELK to drive data-informed decisions.
  • Manage and operate data center fabric services across hybrid and multi-cloud environments, including on-premises infrastructure, Google Cloud Platform (GCP), and Amazon Web Services (AWS).
  • Participate in incident response activities, providing technical leadership during outages and leading post-incident root cause analysis and corrective action planning.
  • Foster a culture of continuous improvement by enabling team members to proactively enhance processes, tooling, and operational maturity.
  • Lead the introduction of new processes and automation capabilities that improve scalability, reliability, and operational efficiency.
  • Maintain strong operational focus on data center fabric technologies while coordinating cross-team efforts with network security and load balancing functions to ensure end-to-end service reliability.

Cloud-based contact center software helps businesses manage customer interactions with tools for inbound and outbound calls, including call routing, predictive dialing, IVR self-service, and analytics. The platform is accessed via a web-based suite delivered as a subscription, scalable and globally deployable with strong security. It differentiates itself with a broad feature set in the cloud, enterprise-grade security, and training via Five9 University. The goal is to help organizations improve customer service operations and efficiency by handling all interactions across channels.

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

San Ramon, California

Founded

2001

Simplify Jobs

Simplify's Take

What believers are saying

  • Five9 serves more than 2,000 customers worldwide and billions of call minutes annually.[1]
  • AI Agent Connect and partner integrations deepen ecosystem stickiness and accelerate deployments.[4]
  • Healthcare and workforce-management partnerships create new vertical and operational expansion paths.[4]

What critics are saying

  • Five9 faces intense competition from better-capitalized cloud CX and CPaaS vendors.
  • Partner-dependent AI strategy can compress margins and weaken direct customer control.
  • Healthcare AI workflows carry regulatory, reputational, and product-liability risk if they fail.

What makes Five9 unique

  • Five9 combines cloud contact center software with AI-elevated CX tools across channels.[1][4]
  • Its platform bundles digital engagement, analytics, workflow automation, and workforce optimization.[1]
  • Five9 emphasizes reliable, secure, compliant, and scalable deployment for enterprise contact centers.[1]

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

401(k) Retirement Plan

401(k) Company Match

Mental Health Support

Paid Vacation

Paid Sick Leave

Parental Leave

Employee Stock Purchase Plan

Employee Discounts

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

-1%

2 year growth

1%
Yahoo Finance
Apr 11th, 2026
Five9 launches AI Agent Connect to orchestrate agentic workflows as enterprise AI revenue surges 50%

Five9, a cloud contact-centre software provider, has expanded its Fusion ecosystem with a new AI Agent Connect integration API, enabling enterprises to connect voice AI agents with third-party systems. The launch aims to orchestrate customer experience workflows across broader ecosystems, moving beyond isolated AI tools. The company reported fourth-quarter 2025 revenue of $300.3 million, up 8% year over year, with full-year revenue rising 10% to $1.149 billion. Enterprise AI revenue grew 50% year over year in the fourth quarter. Management expects double-digit revenue growth in the latter half of 2026, driven by backlog and AI adoption. Five9 provides cloud-based tools for managing customer interactions across voice, digital and workflow channels.

Customer Service Manager
Apr 10th, 2026
Five9 and Assembled expand partnership to tackle multi-agent workforce challenges.

Five9 and Assembled expand partnership to tackle multi-agent workforce challenges. Five9 and Assembled have announced an expansion of their partnership, aimed at addressing the growing complexity of managing contact center workforces that now include a mix of human agents, AI-enabled workflows, and BPO partners. As part of the move, Assembled has been named a Five9 Select ISV Partner. Additionally, Five9 has become an authorized reseller of the Assembled workforce management (WFM) platform. The collaboration is designed to bring "agentic" workforce management capabilities directly into the Five9 Intelligent CX Platform, allowing enterprises to orchestrate their operations across multiple channels and agent types. The shift to agentic WFM. The partnership comes as contact center leaders grapple with a shifting labor landscape. While AI is increasingly handling routine customer interactions, data suggests that human headcount is not necessarily declining. According to Gartner, only 20% of customer service leaders report AI-driven headcount reduction, while 55% say staffing levels have remained flat. This creates a new challenge: planning for a workforce where human and AI agents must work in tandem. Traditional WFM tools, often built for static environments and single-channel staffing, frequently struggle to keep pace with the real-time requirements of modern, omnichannel operations. Ryan Wang, Co-founder and CEO of Assembled, said: "The contact center is moving into a multi-agent world, but most workforce management tools are still built for a much simpler one. Enterprises that can plan across human and AI capacity and manage their workforce intelligently are the ones that will actually deliver on the promise of AI. With Five9, more enterprises can now turn that complexity into a competitive edge." Reducing integration friction. A key focus of the expanded partnership is the technical depth of the integration. By embedding Assembled's WFM capabilities natively within the Five9 platform, the companies aim to eliminate the "point-solution sprawl" that often plagues enterprise tech stacks. The integration allows for real-time data flow between the two systems, facilitating more accurate forecasting and automated scheduling without the need for custom engineering. George Wilson, VP of Strategic Alliances at Five9, said: "Every conversation I'm having with customers comes back to the same thing. They want the power of AI without recreating the point-solution sprawl they just spent years cleaning up. That's why we're investing in partners like Assembled, who bring agentic workforce management into the Five9 Intelligent CX Platform, so our customers can orchestrate people, AI, and workflows." Evolving resource management. This partnership signals a broader maturation of the "AI-first" contact center. For years, the industry focused on the front-end capabilities of AI - chatbots and virtual assistants - often overlooking the back-end operational strain these tools create. Now, WFM is no longer a standalone administrative tool, but a core orchestration layer. As AI handles more volume, the remaining human interactions become more complex and critical, making precise, data-driven staffing the difference between a seamless customer experience and an operational bottleneck. Industry impact. The companies highlighted several joint customers who have already integrated the two platforms to streamline operations. DailyPay, an on-demand pay solution provider, reported a 65% reduction in scheduling time and improved SLA performance by 7% since adopting the combined solution. MTM, which manages over 2,000 agents across 100-plus skill queues for medical transportation, also reported significant efficiency gains. The partnership also simplifies the procurement process, allowing Five9 customers to purchase Assembled directly through Five9 with unified billing and streamlined contracting.

MarTech360
Apr 7th, 2026
Five9 appoints Jay Lee as Chief Marketing and Growth Officer.

Five9 appoints Jay Lee as Chief Marketing and Growth Officer. Five9, Inc., provider of the Intelligent CX Platform, announced the appointment of Jay Lee as Chief Marketing and Growth Officer, effective April 6, 2026. This new role unites global marketing with revenue strategy and operations to create a more powerfully aligned go-to-market (GTM) engine for a more cohesive, insights-driven, and streamlined experience for customers and partners at every stage of their journey with Five9. Lee brings extensive experience driving business transformation, growth, and measurable financial outcomes across enterprise technology and payments industries. His appointment reflects Five9's continued investment in integrating marketing, operations, data, and analytics to accelerate innovation and deliver more personalized, intelligent customer experiences. "Jay's appointment comes at a defining moment for Five9 as we continue to accelerate our leadership in AI-powered customer experience," said Amit Mathradas, CEO, Five9. "His ability to connect sales and customer-facing teams with underlying data and analytics to influence how we market is exactly what companies need in this next era of CX. Jay brings a rare combination of strategic marketing vision, creativity, and operational rigor, with a deep understanding of how to translate customer insight into meaningful business outcomes. As we advance our CX vision, where human expertise and AI work seamlessly together, Jay will be instrumental in helping our customers unlock greater value from their customer experience investments." "I'm thrilled to join Five9 at such a pivotal moment," said Jay Lee, Chief Marketing and Growth Officer, Five9. "Customer experience, data, and commerce are converging faster than ever, and Five9 is uniquely positioned to lead that transformation. I look forward to working with the team to strengthen our brand further, deepen customer relationships, and drive measurable business impact through innovative, data-driven marketing and GTM strategies." Lee joins Five9 from Icertis, where he served as Chief Marketing Officer, leading a global marketing and sales development organization driving brand, demand generation, and GTM planning and execution. Prior to Icertis, he served as Chief Marketing Officer at Avalara, where he led global demand generation and communications strategies to support commercial growth across markets and customer segments. Earlier in his career, Lee held senior leadership roles across B2B and B2C organizations, including GE Capital, American Express, and PayPal. His background across consulting, finance, marketing, and enterprise technology has shaped a disciplined, data-first approach to go-to-market strategy, with deep expertise in revenue operations and execution. Lee is known for his collaborative leadership style, emphasizing idea generation, thoughtful problem-solving, and mentorship to help teams build durable, real-world skills across strategy, storytelling, and execution. He holds an MBA from Columbia University and a Bachelor of Science in Electrical Engineering from Cornell University.

Yahoo Finance
Mar 28th, 2026
Five9 president sells $147K in shares under trading plan, half for tax withholding

Five9 President Andy Dignan sold 8,293 shares of common stock valued at approximately $147,000 in open-market transactions on 4 and 5 March, according to a SEC Form 4 filing. The sale represented 2.8% of his direct holdings, leaving him with 286,963 shares worth approximately $5.23 million. The transactions were conducted under a prearranged Rule 10b5-1 trading plan, combining mandatory tax withholding on restricted stock unit vesting and preplanned sales rather than discretionary selling. This follows a pattern of routine compensation-driven activity. Five9's share price has declined 49% over the past year. The cloud-based contact centre platform provider has a market capitalisation of $1.16 billion and generated $1.15 billion in trailing twelve-month revenue.

Daily Advance
Mar 17th, 2026
Five9, Inc. investor news: Rosen Law Firm announces investigation of breaches of fiduciary duties by the directors and officers of Five9, Inc. - FIVN.

Five9, Inc. investor news: Rosen Law Firm announces investigation of breaches of fiduciary duties by the directors and officers of Five9, Inc. - FIVN. * Business Wire * 18 mins ago NEW YORK-(BUSINESS WIRE)-Mar 17, 2026- Rosen Law Firm, a global investor rights law firm, announces an investigation of potential breaches of fiduciary duties by the directors and officers of Five9, Inc. (NASDAQ: FIVN). Special editions.