Staff Security Engineer (Platform Security)

Box (NYSE:BOX) is the leader in Intelligent Content Management. 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. The company enables organizations to fuel collaboration, manage the entire content lifecycle, secure critical content, and transform business workflows with enterprise AI.

• Strong security engineering foundation with hands-on familiarity in at least two of: DevSecOps automation, software supply chain security (SBOM, signing, provenance), SDLC controls/agents, fuzzing, or application security tooling.
• Development skills in one or more languages (e.g., Python, Go, Java, or TypeScript) and a track record of building production systems.
• Builder mindset with the ability to turn ambiguous risk areas into pragmatic roadmaps, MVPs, and measurable outcomes.
• Comfortable with a breaker/attacker perspective to uncover weaknesses and a builder mindset to scale defenses through automation.
• Proven cross-functional collaborator who can influence without authority and partner across Product, Engineering, and Cloud/SRE.
• Data-driven decision-maker who defines success with metrics and iterates quickly based on signal.
• Excellent communicator in English; able to align global stakeholders across time zones.

Nice to have:

• Experience with SaaS at scale, developer platform/tooling, cloud-native environments, and contributions to open source or security communities.
• Familiarity with common tools or ecosystems (e.g., CI/CD, container registries, policy engines, SAST/DAST, package managers), and modern languages (e.g., Go, Python, Java).

• Contribute to a roadmap that scales Box’s security capabilities across platform and product surfaces.
• Ship MVPs and iterate on security automation, including supply chain security, SDLC agents/controls, and developer-first guardrails.
• Partner with Assurance & Architecture Team and cross-functional teams (Product, Platform, Cloud, SRE, Developer Experience) to embed security into workflows and tooling.
• Drive a breaker–builder approach: identify attack paths, validate with experimentation and feedback, and operationalize secure product development at scale.
• Establish clear team operating mechanisms: prioritization, sprint/quarterly planning, metrics, and post-launch learning.
• Define and track KPIs and KRIs that show risk reduction, coverage, and developer experience improvements.
• Represent the team internally and in the community (e.g., open source, meetups), fostering a culture of learning and inclusion.

Boxers are expected to work from their assigned office a minimum of 3 days per week.