Security Software Engineer Graduate (Security Engineering-TDR) - 2027 Start Technology - Securi[...]

Bytedance; San Jose (CA); On-site; USD 120,000 - 170,000; Full time

Job summary

ByteDance in San Jose is seeking a graduate joining the Security Engineering team to build and operate core systems protecting a global platform. You will tackle threat detection, AI/LLM security, and scalable security solutions in a fast-paced, distributed environment.

The team values ownership, problem solving, and rapid growth. Successful candidates should be able to commit to onboarding by year-end and contribute to cross-functional security initiatives across a massive online platform.

Qualifications

• Bachelor's/Master's in Computer Science, Computer Engineering, Cybersecurity or related discipline.
• Strong fundamentals in algorithms, data structures, OS, networks, and databases.
• Proficiency in at least one language such as Go, Java, Rust, Python, or C++, with clean, reliable code.
• Foundational understanding of backend development, distributed systems, or cloud-native infra.
• Strong problem-solving and fast-learning abilities.

Responsibilities

• Build and iterate on threat detection, prevention, and response systems for large-scale platforms and distributed endpoints.
• Support security of LLM-based and AI agent systems by identifying attack surfaces and improving defenses.
• Prototype, evaluate, and analyze security for LLM/AI agent architectures and related tech.
• Develop, test, deploy, and improve distributed security systems focusing on reliability and observability.
• Collaborate with cross-functional teams to translate product and security needs into engineering solutions.

Skills

Go

Java

Rust

Python

C++

Education

Bachelor's/Master's in Computer Science or related field

Job description

Join us as we work together to inspire creativity and enrich life around the globe.

Location:

San Jose

Team:

Security

Employment Type:

Regular

Job Code:

A61751C

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Responsibilities

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.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.

• 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 approach.
• 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

• Individuals who are completing or have 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.

Job Information

About Us

Founded in 2012, ByteDance's mission is to inspire creativity and enrich life. With a suite of more than a dozen products, including TikTok, Lemon8, CapCut and Pico as well as platforms specific to the China market, including Toutiao, Douyin, and Xigua, ByteDance has made it easier and more fun for people to connect with, consume, and create content.

Why Join ByteDance

Inspiring creativity is at the core of ByteDance's mission. Our innovative products are built to help people authentically express themselves, discover and connect – and our global, diverse teams make that possible. Together, we create value for our communities, inspire creativity and enrich life - a mission we work towards every day.

As ByteDancers, we strive to do great things with great people. We lead with curiosity, humility, and a desire to make impact in a rapidly growing tech company. By constantly iterating and fostering an "Always Day 1" mindset, we achieve meaningful breakthroughs for ourselves, our Company, and our users. When we create and grow together, the possibilities are limitless. Join us.

Diversity & Inclusion

ByteDance is committed to creating an inclusive space where employees are valued for their skills, experiences, and unique perspectives. Our platform connects people from across the globe and so does our workplace. At ByteDance, our mission is to inspire creativity and enrich life. To achieve that goal, we are committed to celebrating our diverse voices and to creating an environment that reflects the many communities we reach. We are passionate about this and hope you are too.

Reasonable Accommodation

ByteDance is committed to providing reasonable accommodations in our recruitment processes for candidates with disabilities, pregnancy, sincerely held religious beliefs or other reasons protected by applicable laws. If you need assistance or a reasonable accommodation, please reach out to us at https://tinyurl.com/RA-request