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Salary
≈ $70k – $202k per year (Estimated)
Location
In office (Sydney)
Seniority
Junior
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 5, 2026. First seen by Alion on Sep 17, 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

Team Introduction

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.

We are looking for talented individuals to join our team. As a graduate, you will get opportunities to pursue bold ideas, tackle complex challenges, and unlock limitless growth.

Successful candidates must be able to commit to an onboarding date by the end of the year. Please state your availability and graduation date clearly in your resume.

Candidates can apply to a maximum of two positions and will be considered for jobs in the order you apply. The application limit is applicable to our Company and its affiliates' jobs globally. Applications will be reviewed on a rolling basis - we encourage you to apply early.

Responsibilities

- Ensure that our applications are designed and implemented to the highest security and privacy standards thus maintaining and enhancing user trust.

- Review and analyze design, architectures, existing systems services, operating systems, networks and applications from a security perspective, via black box testing, code reviews, automation, threat modeling and research.

- Discover security issues that appear under new threat scenarios, support incident response, forensics, remediation in a cross-functional environment driving towards incident resolution.

任职要求 / Requirements

Minimum Qualifications

- Individuals who are completing or have recently completed a Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering or a related discipline.

- Hands-on experience or demonstrated interest in security engineering through internships, academic projects, security research, CTFs, bug bounty, open-source contributions, or relevant personal projects.

- Strong fundamentals in application security, software engineering, or related security domains. Familiarity with areas such as web application security, mobile security, network security, operating systems, applied cryptography, or cloud security. Candidates are expected to demonstrate depth or strong interest in at least one of these areas.

- Proficiency in writing and understanding 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

- Candidates with hands-on experience building AI-powered applications, or experimenting with AI/LLM-driven approaches for vulnerability detection, security analysis, or security review automation, are strongly preferred.

- CTF players, live competitions and hacking events experience.

- Experience identifying or responsibly disclosing security vulnerabilities, including CVEs, is a plus.

- BugBounty experience with reputable statistics in HackerOne, BugCrowd etc.

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