Software Engineer Intern (Security) - Summer 2025 (MS/BS)

TikTok is the leading destination for short-form mobile video. At TikTok, our mission is to inspire creativity and bring joy. TikTok's global headquarters are in Los Angeles and Singapore, and its offices include New York, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.

Why Join Us
Creation is the core of TikTok's purpose. Our platform is built to help imaginations thrive. This is doubly true of the teams that make TikTok possible.
Together, we inspire creativity and bring joy - a mission we all believe in and aim towards achieving every day.
To us, every challenge, no matter how difficult, is an opportunity; to learn, to innovate, and to grow as one team. Status quo? Never. Courage? Always.
At TikTok, we create together and grow together. That's how we drive impact - for ourselves, our company, and the communities we serve.
Join us.

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 the PASS team, leveraging the state-of-art technology "passkey" to bring more convenient and more secure authentication experience to users. You will work closely with senior software engineers, working on real problems and deliver features that are used by hundreds of millions of users.

This Internship Program runs for 10-24 weeks. Candidates will apply for off-cycle or Fall Internship Program.

Applications will be reviewed on a rolling basis. We encourage you to apply early. 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 TikTok and its affiliates' jobs globally.

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 TikTok and its affiliates' jobs globally. Applications will be reviewed on a rolling basis - we encourage you to apply early.


Responsibilities
- Build and maintain high performance security services.
- Explore, develop and experiment with new features to improve performance and scalability.
- Collaborate with multiple cross-functional global teams to deliver high-quality work.
- Understand and address specific security requirements for different business scenarios.Minimum Qualifications:
- Currently pursuing a Bachelor's or Master's degree in Computer Science or related fields
- Ability to work as intern for 10-24 weeks
- Familiar with at least one of the programming languages such as Golang, Python, C, C++, or Java
- Strong written and verbal communication skills

Preferred Qualifications:
- Proficient in Golang
- Security domain knowledge and understanding in various disciplines below: threat intelligence, IAM, applied cryptography, key management systems, data security, application security, web security, security protocols, operating system internals and hardening (e.g., Linux, Android, OS X), network security, hardware security, vulnerability management, etc.
- Solid background and experience working with one or more of the following: large scale distributed or parallel systems, microservice architecture, data pipeline, query engines, developing large software systems, and/or security software development.
TikTok 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 TikTok, our mission is to inspire creativity and bring joy. 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.

TikTok 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://shorturl.at/cdpT2

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