Senior Software Engineer, ISF

Box; Redwood City (CA); On-site; USD 150,000 - 230,000; Full time

Job summary

Box is seeking a Senior Software Engineer for the Identity & Security Foundation in Redwood City, CA. You will design and build secure authentication/authorization systems, and lead microservices that power MFA, SSO, OAuth 2.0, and JWT-based token management.

You’ll mentor peers and help shape Box’s security architecture. You will work on critical identity infrastructure foundational to Box’s AI-driven platforms, with on-call responsibilities and collaboration across teams.

Qualifications

• 5+ years of software engineering experience with a CS or related degree.
• Strong understanding of modern authentication and authorization technologies like MFA, SSO, OAuth 2.0, JWTs.

Responsibilities

• Design, develop, and maintain secure, scalable authentication and authorization systems.
• Build and operate high-quality microservices powering security features (MFA, SSO, OAuth 2.0, OIDC).
• Mentor engineers and influence architectural decisions.
• Participate in on-call rotation to resolve incidents.

Skills

Java

PHP

Docker

Kubernetes

MFA

SSO

OAuth 2.0

JWTs

Education

Bachelor's degree in CS

Tools

Box APIs

Job description

Senior Software Engineer, Identity & Security Foundation (ISF)

Redwood City, CA

WHAT IS BOX?

Box (NYSE:BOX) is the leader in Intelligent Content Management. Our platform enables organizations to fuel collaboration, manage the entire content lifecycle, secure critical content, and transform business workflows with enterprise AI. We help companies thrive in the new AI-first era of business. Founded in 2005, Box simplifies work for leading global organizations, including JLL, Morgan Stanley, and Nationwide. Box is headquartered in Redwood City, CA, with offices across the United States, Europe, and Asia.

WHY BOX NEEDS YOU

The Identity and Security Foundation (ISF) team serves as the gatekeeper to Box. Every request to access Box services must be authenticated through one of the systems we manage. We own the authentication experience across Box - including web, API, service-to-service, and SSO; and architect, build, and operate the foundational identity infrastructure that underpins Box’s security.

As Box evolves into an AI-powered content platform, ISF is at the forefront of securing the next generation of intelligent experiences. We are extending our identity and access foundations to support AI services, enabling secure interactions between users, applications, and AI agents while protecting customer data and enabling trustworthy AI adoption at scale.

Whether we're scaling systems to handle billions of requests per day, building seamless and secure authentication experiences, reimagining identity for a multi-device world, or creating secure foundations for AI-driven workflows, we enable Box to grow rapidly and securely. The modern, secure, and reliable services and frameworks we build are foundational to realizing Box’s ambitious vision.

WHAT YOU'LL DO

• Design, develop, and maintain secure, scalable authentication and authorization systems using technologies such as Java, PHP, Docker, and Kubernetes.
• Build and operate high-quality microservices that power security capabilities including MFA, SSO, OAuth 2.0, OIDC, JWTs, token management, scopes, and permissions.
• Provide technical guidance across multiple levels of architecture and mentor engineers on the team, helping raise the bar for engineering and security practices.
• Influence and contribute to company-wide architectural decisions, bringing deep expertise in identity, authentication, authorization, and security to technical reviews.
• Participate in our on-call rotation, available at all times while on-call to help respond to and triage any issues that arise.

WHO YOU ARE

We are an AI-first company. This means you approach your work with a growth mindset and find ways to leverage AI to help make faster, smarter decisions that will 10X your impact at Box.

Required skills:

• 5+ years of software engineering experience, with a degree in Computer Science, a related field, or equivalent experience.
• Strong understanding of modern authentication and authorization technologies, including MFA, SSO, OAuth 2.0, JWTs, token management, scopes, and permissions.
• Experience designing, building, and operating secure, production-grade services and RESTful APIs using microservices architectures.
• Strong Java proficiency and working knowledge of PHP.
• Strong understanding of security best practices and the ability to design systems that balance security, performance, reliability, and user experience.
• Ability to translate product and business requirements into scalable, secure technical designs.
• Experience collaborating effectively with engineering and business leaders across teams and disciplines.

Preferred Skills:

• You have implemented solutions based on Box APIs
• You have led or contributed to open source projects
• You contribute to developer communities such as Stack Overflow or GitHub

Box lives its values, with community and in-person collaboration being a core part of our culture. Boxers are expected to work from their assigned office a minimum of 3 days per week. Your Recruiter will share more about how we work and company culture during the hiring process.

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We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability, and any other protected ground of discrimination under applicable human rights legislation. Box strives to respect the dignity and independence of people with disabilities and is committed to giving them the same opportunity to succeed as all other employees. Inclusiveness is core to our culture at Box, and we strive to ensure you get the most from your interview experience.

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