Sr. Full Stack Engineer

Role Summary

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.

Job Title: Full-Stack Engineer

Location: Onsite, Sunnyvale, California (5 days a week in the office)

Onwards Together!

Illumio, the pioneer and market leader of Zero Trust segmentation, prevents breaches from becoming cyber disasters. Illumio protects critical applications and valuable digital assets with proven segmentation technology purpose-built for the Zero Trust security model. Illumio ransomware mitigation and segmentation solutions see risk, isolate attacks, and secure data across cloud-native apps, hybrid and multi-clouds, data centers, and endpoints, enabling the world’s leading organizations to strengthen their cyber resiliency and reduce risk.

Illuminate the future with Illumio and join a team that’s passionate about developing cutting-edge security solutions that protect the world's most critical assets.

Our Team's Vision

Our Engineering team has established a culture based on thought leadership, independence, and responsibility. This powerful dynamic drives us forward as we work to make the digital world a safer place.

We are seeking an early career Full-Stack Engineer to join our dynamic team. The ideal candidate will have a strong foundation in both front-end and back-end development, with a focus on UI using React, TypeScript, and other modern JavaScript frameworks. Experience with APIs for distributed systems is highly valued. This role involves developing scalable and responsive web applications that meet the needs of our users.

Responsibilities

• Innovate and Disrupt: Develop products that revolutionize network segmentation, enhancing the protection of data centers and cloud stacks against attacks.
• Full-Stack Development: Design, develop, and test comprehensive full-stack applications using the latest native browser APIs, web servers, and frontend frameworks.
• Architectural Contribution: Enhance the full-stack architecture of web applications, including deployment, configuration, build systems, component libraries, style guides, and responsiveness. Evaluate and adopt open-source solutions.
• User Interaction Optimization: Identify and optimize user interaction workflows across UI applications, ensuring quality and consistency.
• User Experience and Design: Collaborate with UI experts to make decisions around user experience and visual design.
• Cross-Team Collaboration: Work with other development teams to improve the usability of cross-services APIs.
• Code Quality Ownership: Implement industry best practices for linting, static typing, unit testing, and functional/integration testing to build robust and resilient products.
• Product Partnership: Partner with Product Management to review, refine, and set product goals that exceed customer expectations.
• Customer Understanding: Develop a deep understanding of the fundamental problems our customers need to solve through interaction with stakeholders and peers.

Requirements

Your Toolkit

• Experience: 5+ years of experience in full-stack/UI development.
• Front-end Skills:
• Proficient understanding of web markup, including HTML5 and CSS3.
• Strong experience with JavaScript, TypeScript, React.js, and other JavaScript frameworks.
• Back-end Skills:
• Experience with modern backend technologies and RESTful API design.
• (Nice to have) Experience developing microservices or working with service-oriented architectures.
• Version Control: Experience with version control tools, particularly Git.

Bonus Points

• Masters in Computer Science or equivalent degree
• Experience with Modern Front-end Build Pipelines: Familiarity with modern front-end build tools and pipelines.
• Cloud Platforms: Experience with cloud platforms (AWS, Azure, or Google Cloud).
• Containerization: Basic knowledge of containerization and orchestration tools (Docker, Kubernetes).

#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 the Company

OUR TEAM'S VISION

Our IT team is a key contributor at the heart of our operations, collaborating closely with teams across the organization to drive business value. We encourage our team members to be innovators, actively seek solutions, and meet challenges head-on.

From end-user support to pioneering IT solutions and business applications, we continuously advance our capabilities. As a leader in Zero Trust Segmentation—protecting organizations from cyber threats like ransomware—Illumio recognizes the critical role of robust IT infrastructure. Our IT team is a vital and esteemed strategic partner throughout the company.

The Business Applications team is currently seeking a Senior HRIS Applications Analyst to serve as a Workday subject matter expert that takes lead in the design and build to optimize our HR system. This role partners closely with HR, Finance, Benefits, and IT. At Illumio, we are powering the era of agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator that is core to how you solve problems and accelerate your impact. We look for low-ego individuals who thrive in dynamic and fast-moving environments and move with an experimental mindset. Your role isn't just to execute a function, but to help redefine the future of how work gets done.