Security Software Engineer Intern — Product Security & AI Tools

TikTok Inc.; San Jose (CA); On-site; USD 28,000 - 39,000; Part time

Job summary

TikTok Inc. is seeking a project intern to participate in security assessments and tooling projects, with opportunities to impact AI tooling and security reviews. You will engage in fast‑paced, hands‑on experiences, collaborate across teams, and gain exposure to strategic security initiatives at scale.

The internship offers practical on‑the‑job learning and aims to build deeper insight into your cybersecurity career interests, with rolling reviews and a minimum three‑month commitment.

Qualifications

• Pursuing a degree in CS/CE/IS or related STEM field.
• Experience in threat modeling, security tooling or privacy engineering.
• Knowledge of web/mobile/network security, OS internals, cryptography or cloud computing.
• Experience coding in JavaScript, Go, Python, Java, C++, or Rust.
• Strong problem solving and debugging skills.

Responsibilities

• Participate in security assessments such as pentests on web or mobile apps.
• Contribute to tooling projects with a security focus, including code review and API testing.
• Assist in building evaluators and optimisations for security review tooling.
• Improve LLM usage in the SDLC and enhance infrastructure security.

Skills

Security engineering

Threat modeling

Code review

API testing

NLP/LLM

Education

Pursuing CS/CE/IS degree

Tools

JavaScript (Node JS)

Go

Python

Java

C++

Rust

Job description

TikTok Inc. is seeking a project intern to participate in security assessments and tooling projects, with opportunities to impact AI tooling and security reviews. You will engage in fast‑paced, hands‑on experiences, collaborate across teams, and gain exposure to strategic security initiatives at scale.

The internship offers practical on‑the‑job learning and aims to build deeper insight into your cybersecurity career interests, with rolling reviews and a minimum three‑month commitment.