TikTok Security Software Engineer Intern, London, 2025
Company
Location
London, England, United Kingdom
Posted At
5/13/2025
Advertise with us by contacting: [email protected]
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Description
Responsibilities
About the Team
FIDO stands for Fast Identity Online. It is the state-of-the-art authentication that is arguably the most secure of all currently available authentication methods. Our team's mission is to protect both internal and external users across all company applications with secure and user-friendly FIDO2 authentication. We have a variety of tech stacks, including WebAuthN server, mobile and web SDK, tools, and other components that implement FIDO2 and support its use.
There are two major initiatives in our team, mainly separated by the different types of customers we serve:
Minimum Qualifications:
About TikTok
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 we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.
Why Join Us
Inspiring creativity is at the core of TikTok's mission. Our innovative product is 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 bring joy - a mission we work towards every day.
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. Every challenge is an opportunity to learn and innovate as one team. We're resilient and embrace challenges as they come. 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
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.
About the Team
FIDO stands for Fast Identity Online. It is the state-of-the-art authentication that is arguably the most secure of all currently available authentication methods. Our team's mission is to protect both internal and external users across all company applications with secure and user-friendly FIDO2 authentication. We have a variety of tech stacks, including WebAuthN server, mobile and web SDK, tools, and other components that implement FIDO2 and support its use.
There are two major initiatives in our team, mainly separated by the different types of customers we serve:
- Internal ToE(nterprise): Empower every employee as a phishing-resistant user.
- External ToC(onsumer) and ToB(usiness): Deliver a seamless and secure FIDO2 authentication experience across all company products.
- Support as a technical expert for requirements, design and implementation of FIDO2 services and products across TikTok's suite of products.
- Assist with the design, develop and onboard FIDO2 service with all the company services, including but not limited to compute, storage, DB systems.
- Partner with Product, Operation team, Security/Legal/Compliance and other engineering teams to identify and address authentication related security issues.
- Play a critical role in influencing cross functional partners and roadmaps to continuously tighten the security posture of overall TikTok's Infrastructure.
- Technology:
- Cloud-based microservice architecture in Golang
- Highly distributed system with data centers in multiple countries
- Data pipelines and query engines
- More specifically include
- Golang, Python and other common object-oriented programming language
- MySQL, Redis, Elastic Search, Kafka
- Grafana, Hive
- Thrift RPC, Service Mesh, Consul, TLS, mTLS
- React, Vue, Angular, NodeJS or other common web framework
- Native Android and iOS client
Minimum Qualifications:
- Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, or other relevant majors.
- Available to start immediately for 9-12 week duration.
- Proficiency in English to enable ongoing collaboration and communication within the team.
- Experience with OAuth, FIDO2, and Passkey, and the application of security technologies such as Android TEE and Strongbox, Apple SEP, and TPM.
- Experience with iOS development (Swift and/or Objective-C) is a plus.
- Experienced in the design and implementation of large scale distributed system
- Creative problem-solving skills and excellent troubleshooting and debugging skills
- Strong written & verbal communication and excellent teamwork skills
About TikTok
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 we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.
Why Join Us
Inspiring creativity is at the core of TikTok's mission. Our innovative product is 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 bring joy - a mission we work towards every day.
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. Every challenge is an opportunity to learn and innovate as one team. We're resilient and embrace challenges as they come. 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
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.
Advertise with us by contacting: [email protected]
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