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Salary
≈ $66k – $94k per year (Estimated)
Location
In office (San Jose)
Seniority
Intern
Visa
H-1B filings in 12 months: 547 · for this role: 27 · green card filings: 242
Employment
Internship

Confirmed on the employer's own hiring board on Oct 19, 2026. First seen by Alion on Jan 28, 2026. TikTok scores B on the Alion truth index.

Overview
Company
Impact
Profile match
TikTok is a short-form video platform owned by the Chinese technology group ByteDance and launched internationally in 2016, growing further after the 2018 merger with the lip-sync app Musical.ly. Its recommendation feed surfaces content by engagement signals rather than social graph, which lets new creators reach large audiences quickly and made the app one of the most downloaded in the world. The company runs dual operating hubs in Singapore and Los Angeles and has built an advertising business, a live streaming economy and the TikTok Shop commerce marketplace on top of the video feed.

岗位职责 / Responsibilities

About the Team

The team is missioned to build infrastructures, platforms and technologies, as well as to support cross-functional teams to protect our users, products and infrastructures. In this team you'll have a unique opportunity to have first-hand exposure to the strategy of the company in key security initiatives, especially in building scalable and secure-by-design systems and solutions. Our challenges are not your regular day-to-day technical problems; you'll be part of a team that's developing new solutions to new challenges of a kind not previously addressed by big tech. It's working fast, at scale, and we're making a difference.

As a project intern, you will have the opportunity to engage in impactful short-term projects that provide you with a glimpse of professional real-world experience. You will gain practical skills through on-the-job learning in a fast-paced work environment and develop a deeper understanding of your career interests.

Applications will be reviewed on a rolling basis - we encourage you to apply early.

Successful candidates must be able to commit to at least 3 months long internship period.

Responsibilities:

- Participate in security assessments such as pentests on Web or mobile applications.

- Take part in tooling development projects with a security focus, such as code review and API testing. Tools developed will benefit LLM integration.

- Assist in building Evals, harnesses and optimisations on existing AI tooling & systems for Security Review.

- Improve the usage of LLM in the SDLC process and enhance the infrastructure security.

任职要求 / Requirements

Minimum Qualifications

- Undergraduate, or Postgraduate who is currently pursuing a degree/master in Computer Science, Computer Engineering, Information Systems or other STEM disciplines

- Security engineering experience such as threat modeling, security mitigation development, security tooling development or privacy engineering.

- Understanding in various disciplines: web application security, mobile app security, network security, operating system internals and hardening, applied cryptography, cloud computing. You're expected to be an expert in at least one of these areas.

- Experience in writing and reviewing code in at least one of the following programming languages: JavaScript (Node JS), Go, Python, Java, C++, Rust.

- Strong problem-solving skills and excellent debugging / troubleshooting skills.

Preferred Qualifications

- Experience with NLP/LLM

- Knowledge of distributed systems, edge computing, or high-performance network programming

By submitting an application for this role, you accept and agree to our global applicant privacy policy, which may be accessed here: https://jobs.bytedance.com/en/legal/privacy.

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