Security Software Engineer Graduate (Security Engineering-TDR) - 2027 Start

About Us

ByteDance’s mission is to inspire creativity and enrich life. With a suite of products including TikTok, Lemon8, CapCut, Pico, Toutiao, Douyin, and Xigua, ByteDance makes it easier and more fun for people to connect with, consume, and create content.

About the Role

The Security Engineering team at ByteDance builds and operates the core systems that protect one of the world's largest internet platforms and its global user community. We tackle challenges that span threat detection and response (TDR), infrastructure protection, and the emerging frontier of AI and LLM system security — all at the scale of TikTok and ByteDance. Our engineers combine deep systems-building expertise with strong security fundamentals to deliver high-impact, production-grade solutions in a fast-paced, globally distributed environment. If you thrive on ownership, love solving ambiguous problems, and want your work to safeguard products used by billions, this is the team.

Responsibilities

• Build and iterate on threat detection, prevention, and response (TDR) systems for large-scale platforms, critical infrastructure, and globally distributed endpoints.
• Support the security of LLM-based systems and AI agent systems by identifying attack surfaces, developing defensive mechanisms, and improving safe deployment.
• Contribute to rapid exploration in LLM and AI agent security through prototyping, evaluation, security analysis, machine learning, and AI agentic approaches.
• Develop, test, deploy, and improve distributed security systems with a focus on reliability, observability, and scalability.
• Work with cross-functional teams to translate product and security needs into engineering solutions and deliver impactful security capabilities.

Qualifications

Minimum Qualifications

• Completing or recently completed a Bachelor's/Master's degree in Computer Science, Computer Engineering, Cybersecurity, or a related discipline.
• Solid fundamentals in computer science, including algorithms, data structures, operating systems, computer networks, and databases.
• Proficiency in at least one programming language such as Go, Java, Rust, Python, or C++, with the ability to write clean, reliable, and maintainable code.
• Foundational understanding of back-end development, distributed systems, or cloud-native infrastructure through coursework, internships, research, or project experience.
• Strong problem-solving skills, with the ability to think critically, break down complex problems, and learn quickly in a fast-evolving technical environment.

Preferred Qualifications

• Internship, research, or project experience building AI/LLM applications, AI agent systems, or related back-end and distributed systems.
• Familiarity with core security concepts such as authentication, authorization, threat detection, vulnerability mitigation, and secure system design.
• Research experience or strong technical understanding in the security of LLM-based systems and AI agent architectures, including areas such as prompt injection, tool misuse, model abuse, and agent workflow security.
• Demonstrated interest in security and emerging technologies through coursework, competitions, open-source contributions, personal projects, or publications.

Pay

The base salary range for this position is $128,000 – $316,800 annually. Compensation may vary depending on qualifications, skills, competencies, experience, and location. Base pay is one part of the total package, which may include additional discretionary bonuses, incentives, and restricted stock units.

Benefits

• Day-one access to medical, dental, and vision insurance.
• 401(k) savings plan with company match.
• Paid parental leave.
• Short-term and long-term disability coverage.
• Life insurance.
• Wellbeing benefits.
• 10 paid holidays per year.
• 10 paid sick days per year.
• 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure).

Benefits may vary depending on the nature of employment and country work location. The company reserves the right to modify or change these benefits programs at any time, with or without notice.