Application Developer Intern

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.

This is a 12 week internship program beginning on May 26th 2026 or June 22nd 2026

Location: Onsite 5 day's a week at Headquarters in Sunnyvale, CA

Our Team's Vision:

As an application developer intern, you will contribute to the development and maintenance of critical applications that support our customers and internal teams. You will have the opportunity to work closely with experienced developers and gain valuable hands-on experience in a fast-paced, dynamic environment.

What You'll Do:

• Design & Develop: Collaborate with senior engineers to design, implement, and test new application features that improve operational efficiency and user experience

• Maintain & Optimize: Support the maintenance and performance tuning of existing internal tools and applications

• Troubleshoot: Diagnose and resolve application issues, ensuring reliability and uptime

• Document: Create clear technical documentation and user guides for developed features

• Code Quality: Write clean, efficient, and well-documented code following Illumio’s best practices

• Innovation: Explore and apply emerging technologies to enhance application functionality.

What You'll Bring:

• Currently enrolled in a full-time Bachelor’s degree program in Computer Science, Software Engineering, or a related technical field, with an expected graduation date in Winter 2026 or Spring 2027

• Strong programming skills in Ruby, Python, or JavaScript

• Familiarity with web frameworks (e.g., Ruby on Rails, Django, Node.js) and database systems (MySQL, PostgreSQL)

• Solid understanding of software development principles, debugging, and version control (Git)

• Excellent problem-solving skills, attention to detail, and ability to work independently or in a team

• Strong communication skills and a collaborative mindset

• A passion for learning new technologies and continuous improvement

What You'll Gain:

• Hands-on Experience: Work on real-world projects impacting Illumio’s internal and external applications

• Mentorship: Learn directly from senior engineers and gain insights into enterprise-scale application development

• Technical Growth: Exposure to modern frameworks, tools, and best practices in software engineering

• Professional Development: Build skills in agile methodologies, cross-functional collaboration, and technical documentation

• Impact: Contribute to Illumio’s mission of securing organizations through innovative technology

Compensation: $ 30 USD

Our Commitment:

Illumio believes that an environment of unique backgrounds, experiences, viewpoints, and individual contributions drives our success and makes us stronger together. We are dedicated to creating and maintaining a diverse culture and emphasizing inclusion and belonging.

#LI-PO #LI-ONSITE

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.