Security Software Engineer Project Intern

TikTok

San Jose, CAFresher1h agovia LinkedInH-1B sponsor · 86 entry-level filings

This job at a glance

Who can apply
New grads and up to 1 year
Must know
Social mediaREST APIsPythonJavaJavaScriptC++
Nice to have
LLMsNLPSystem design
Work
On-site in San Jose · internship
Pay
Not stated by the employer.
Skill demand
Python75%Java43%REST APIs24%Social media10%of 63 similar entry-level jobs posted in the US this week
Listed
Nov 12, 2026 · still open

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About the Role

The Security Software Engineer Project Intern (Product Security) role at TikTok is an opportunity to engage in impactful short-term projects. This internship provides a glimpse of professional real-world experience, allowing you to gain practical skills through on-the-job learning in a fast-paced work environment and develop a deeper understanding of your career interests. Successful candidates must be able to commit to at least a 3-month internship period.

Key Responsibilities

  • Participate in security assessments, such as pentests on Web or mobile applications.
  • Take part in tooling development projects with a security focus, including 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.

Requirements & Tech Stack

  • 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.

Qualifications

  • Undergraduate or Postgraduate 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 are expected to be an expert in at least one of these areas.
  • Preferred Qualifications:
  • Experience with NLP/LLM.
  • Knowledge of distributed systems, edge computing, or high-performance network programming.

H-1B sponsor

TikTok filed 86 entry-level H-1B applications for new hires (Oct 2025 - Jun 2026, Department of Labor).

See their H-1B record →

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