---
title: 'Staff Software Engineer at Illumio'
canonical: 'https://feeny.ai/job/staff-software-engineer-illumio-hq-sunnyvale-ca-jfv9gqqjfr84'
type: 'job'
last_seen: '2026-11-10'
---

# Staff Software Engineer at Illumio

- **Company:** [Illumio](https://feeny.ai/companies/illumio)
- **Location:** HQ / Sunnyvale, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-11-03
- **Last confirmed live:** 2026-11-10
- **Apply:** https://jobs.ashbyhq.com/illumio/eb81e246-8f83-4d10-84d3-36e48c7470cf

## Job description

Onwards Together! Illumio is the leader in ransomware and breach containment, redefining how organizations contain cyberattacks and enable operational resilience. Powered by the Illumio AI Security Graph, our breach containment platform identifies and contains threats across hybrid multi-cloud environments – stopping the spread of attacks before they become disasters.

Recognized as a Leader in the Forrester Wave™ for Microsegmentation, Illumio enables Zero Trust, strengthening cyber resilience for the infrastructure, systems, and organizations that keep the world running. Our Team's Vision: At Illumio, our engineering team thrives on visionary leadership, customer-centric innovation, and relentless execution. We tackle the most critical and complex challenge in modern cybersecurity: stopping malicious actors and containing cyber threats before lateral movement turns an attack into a widespread business catastrophe. As an engineer here, you will design, build, and optimize massively scalable distributed systems that power the future of zero trust, segmentation, and automated breach containment. Working across a high-performance stack—from operating system internals to highly available multi-cloud scaling and immersive data visualizations—you will solve complex networking, massive real-time telemetry processing challenges. If you are eager to conquer deep systems-level problems, build fault-tolerant software at a massive scale, and create a safer digital future for the world’s largest enterprises, join our mission and engineer the defense systems of tomorrow.

Your Impact:

- Deliver cloud architecture that solves the business problem and balance architecture and business margins
- Collaborate with cross-functional teams, including Product manager, developers, DevOps engineers to understand business requirements and architect scalable cloud solutions
- Design, deploy, and manage cloud-based architecture using industry best practices, focusing on efficiency, scalability, availability, performance, and security
- Evaluate and select appropriate cloud technologies, platforms, and tools, including Kubernetes, to meet the company's needs and drive innovation
- Optimize cloud-based systems for high availability, fault tolerance, and disaster recovery
- Implement and manage monitoring, logging, and alerting systems to ensure the health and performance of the cloud infrastructure
- Identify and resolve performance bottlenecks, security vulnerabilities, and other operational issues in the cloud environment
- Stay up-to-date with the latest trends, technologies, and best practices in cloud computing, distributed systems, and cyber security

Your Toolkit:

- Proven experience as a Cloud Architect or a similar role, designing and implementing cloud-based solutions in a production environment
- AWS / Azure / GCP cloud experience
- Extensively used one of these platforms at the API/programming level
- Experience with networking and security controls is a plus
- Language and programming requirements
- Experience in one or more programming languages: Java, Python
- REST API client experience
- CloudFormation, Terraform are nice to have
- Working knowledge of spring or similar eco systems o Knowledge of Kubernetes and docker containers is good to have
- Gang of four design patters
- Strong expertise in cloud platforms such as Amazon Web Services (AWS), Microsoft Azure, or Google Cloud Platform (GCP)
- In-depth knowledge of Kubernetes and containerization technologies
- Built highly scalable distributed system from ground up
- Experience with building highly scalable and resilient cloud services
- Excellent problem-solving and troubleshooting skills
- Strong communication and collaboration abilities
- Ability to work in an agile environment and drive initiatives with clarity and purpose

## #LI-TD1 #LI-ONSITE

Our Commitment

Illumio believes that an environment of unique backgrounds, experiences, viewpoints, and individual contributions creates a culture of belonging, drives our future, and makes us stronger together in support of our customers and their success.

All official job offers from our company are extended directly by our recruitment team and will be sent through an official E-Signature document for your review and signature. Please be aware that we do not ask for any personal information in the process of extending offers of employment, such as financial details or social security numbers. Upon acceptance of any offer, we will request such information as part of the onboarding process prior to or on your first day of employment, and only after completing a background check through an authorized third-party vendor. If you receive any communication asking for personal details outside of these processes, please contact us immediately to verify the authenticity of the request. Your security is important to us, and we are committed to a safe and transparent hiring experience. For roles in San Francisco and Los Angeles: Pursuant to the San Francisco Fair Chance Ordinance and the Los Angeles Fair Chance Initiative for Hiring, Illumio will consider for employment qualified applicants with arrest and conviction records.

## About Illumio

## Company Overview
- **One-liner**: Illumio provides a breach containment platform that prevents lateral movement and strengthens cyber resilience across hybrid and multi-cloud environments using AI-powered microsegmentation.
- **Entity Type**: Private (over $557.5M in total funding, 5 rounds, late-stage)
- **Headquarters**: Sunnyvale, California, USA
- **Founded**: 2013
- **Founders**: Not publicly available (co-founders typically listed as Andrew Rubin and PJ Kirner, but not confirmed in provided sources)

## Core Business
- **Primary industry/industries**: Cybersecurity (Computer and Network Security)
- **Target customers**: B2B – enterprise and midsize businesses across banking & financial services, energy & utilities, government, healthcare, and manufacturing
- **Mission or purpose statement**: “Breaches are Inevitable. Disasters are Optional.” – focuses on shifting from prevention to cyber resilience and breach containment.

## Products & Services
- **Illumio Segmentation**: Microsegmentation platform that secures critical assets, workloads, and devices across hybrid and multi-cloud environments. Prevents lateral movement and enforces Zero Trust.
- **Illumio Insights**: AI-powered observability, detection, and containment platform. Identifies lateral movement, detects attacks, and enables one-click containment using the Insights Agent (AI teammate).
- **Illumio CloudSecure**: A newer product focused on cloud security, integrating with Azure Firewall Management and other cloud environments.

## Market Standing
- **Valuation/Market Cap**: Not disclosed.
- **Key Metrics**: Annual revenue of $100M (LinkedIn estimate); total funding of $557.5M (LinkedIn).
- **Notable Investors/Partners**: Not specified in provided sources. Key partnership: collaboration with Microsoft to strengthen cyber resilience and prevent breaches at scale.
- **Growth Signals**: 640 employees (+12.0% YoY, +96 people); named a 2024 Forrester Wave Leader in Microsegmentation; named a Customers’ Choice in the 2026 Gartner Peer Insights Voice of the Customer for Network Security Microsegmentation; targeting new AI-driven market with Insights Agent.

## Competitive Advantages
- Proven leader in microsegmentation (Forrester Wave Leader, Gartner Customers’ Choice).
- First-to-market breach containment platform – not just detection but automated containment.
- Strong cross-platform support (hybrid, multi-cloud, on-premises).
- High customer satisfaction (4.8/5 star rating based on reviews).
- Deep integrations with major cloud providers (Microsoft Azure, AWS).

## Strategic Focus
- Expanding AI capabilities with the Insights Agent for faster threat detection and automated remediation.
- Deepening cloud-native integrations, especially with Azure Firewall Management.
- Scaling from mid-market to large enterprise and government sectors.
- Building a new global headquarters (Sunnyvale) and expanding regional offices (London, Paris, Tokyo, Singapore, Australia, etc.).

## Why Work Here
- **Culture**: “Illumineer” culture built on innovation, cross-functional collaboration, and inclusion. Core values: Customer First Always, Relentless Execution, Onwards Together.
- **Work model**: Hybrid – 2 days per week in office (Sunnyvale); every Friday is a remote work day.
- **Benefits**: Comprehensive medical benefits, generous parental leave, fitness reimbursement, mentorship program, professional development resources, catered lunches, stocked kitchen, Illumineer Day (dedicated holiday).
- **Employee Resource Groups**: The Neuroverse (neurodiversity), The Rainbow Room (LGBTQIA+), The Women (women’s leadership), The Village (caregivers).
- **Growth**: Fast-growing company (12% headcount YoY) with a mission-critical cybersecurity product; interns work on real projects that impact the future of security.

## Sources
1. [Illumio Homepage](https://www.illumio.com/)
2. [Illumio Careers Page](https://www.illumio.com/company/careers)
3. [Illumio Corporate Overview](https://www.illumio.com/resource-center/corporate-overview)
4. [Illumio Job Listing (Senior Backend Engineer)](https://www.illumio.com/company/job-listing)
5. [Illumio LinkedIn Company Page](https://www.linkedin.com/company/illumio)

## Other roles at Illumio

- [Engineering Intern, SRE](https://feeny.ai/job/engineering-intern-sre-illumio-sunnyvale-t995qe915vzb) — Sunnyvale, CA / HQ
- [Revenue Accounting Manager](https://feeny.ai/job/revenue-accounting-manager-illumio-sunnyvale-exw0wb7535vf) — Sunnyvale, CA / HQ
- [Snr. Sales Engineer](https://feeny.ai/job/snr-sales-engineer-illumio-tokyo-7wymdjnygt8x) — Tokyo, Japan
- [Sr. Technical Account Manager (TAM)](https://feeny.ai/job/sr-technical-account-manager-tam-illumio-united-kingdom-eanda5rmz0gy) — United Kingdom
- [Sr. Sales Engineer](https://feeny.ai/job/sr-sales-engineer-illumio-saudi-arabia-zx7dnknd46ee) — Saudi Arabia
- [Professional Services Consultant](https://feeny.ai/job/professional-services-consultant-illumio-united-kingdom-ktdwp0zm2brb) — United Kingdom
- [Sr. Marketing Analytics Specialist](https://feeny.ai/job/sr-marketing-analytics-specialist-illumio-sunnyvale-nj775c2xg88g) — Sunnyvale, CA / HQ
- [Sr. Staff Engineer](https://feeny.ai/job/sr-staff-engineer-illumio-hq-sunnyvale-ca-pt204k2z8am3) — HQ / Sunnyvale, CA
- [Technical Account Manager](https://feeny.ai/job/technical-account-manager-illumio-florida-s4z99g55xcmg) — Florida
- [Sr. Technical Account Manager](https://feeny.ai/job/sr-technical-account-manager-illumio-florida-qbnmfge38kcd) — Florida