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Site Reliability Engineer - Security Engineering

London, United Kingdom


TikTok is the leading destination for short-form mobile video. Our mission is to inspire creativity and bring joy. TikTok has global offices including Los Angeles, New York, London, Paris, Berlin, Dubai, Singapore, Jakarta, Seoul and Tokyo.

Why Join Us
At TikTok, our people are humble, intelligent, compassionate and creative. We create to inspire - for you, for us, and for more than 1 billion users on our platform. We lead with curiosity and aim for the highest, never shying away from taking calculated risks and embracing ambiguity as it comes. Here, the opportunities are limitless for those who dare to pursue bold ideas that exist just beyond the boundary of possibility. Join us and make impact happen with a career at TikTok.

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About Security Team at TikTok
The security 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. You also have opportunities to go through the whole lifecycle of security products or services, are encouraged to participate in each phase, each part of the projects and have the whole picture of what you are working on.

We count on our Site Reliability Engineers (SREs) to empower our users with high availability and stellar performance level to pursue their missions from security perspective. As we expand our business in EMEA, we are currently seeking experienced SRE to deliver insights from massive-scale security systems in real time. Our challenges are not those regular day-to-day technical problems. Instead, you, together with your team members, are encouraged to bring fresh ideas, investigate the existing infrastructure of TikTok, identify problems, and develop new solutions to those challenges of a kind not previously addressed by big tech. We are moving fast while expanding on a large scale (1B+ users). This role assumes a huge impact and plays a key role in the company's business.

- Work with TikTok product engineering team and security software engineers on system design, software platforms, capacity planning and launch reviews throughout whole lifecycle of services; provide your expertise feedback, guidance, and recommend solutions on each phase of the project.
- With cutting edge technologies, build automation tools and solutions to measure and monitor availability, scalability, latency and overall system health of security products and services developed by partner teams, and improve the efficiency and sustainability of system maintenance.
- Partner with development teams to improve services through rigorous testing and release procedures
- Consistently evolve systems by pushing for changes that improve reliability, velocity and efficiency.
- Practice sustainable incident response and postmortems. Support product and security engineering teams identifying flaws and vulnerabilities in our systems.


- BS degree in Computer Science, Computer Engineering, Electrical Engineering or relevant majors with 2+ years of working experience.
- Excellent programming, debugging, and optimization skills in general purpose programming languages including but not limited to: Go, Python, C/C++, Java, or Rust.
- Experience of analyzing and investigating production issues at scale.
- Experience and understanding of infrastructure-as-code concepts, approaches, methods, and tooling.

Preferred Qualifications:
- Hands on experience with large cloud providers such as AWS, Azure, GCP, or OCI.
- Code Infrastructure with tools such as Kubernetes, Terraform, Ansible, Puppet, Chef or SaltStack.
- Secure infrastructure in a distributed system with automation or practice chaos engineering.
- Experience with two or more from the following areas: web application development, Unix/Linux environments, distributed and parallel systems, developing large software systems, mobile application development, and/or security software development.
- Background in cyber security, including but not limited to: threat intelligence, IAM, key management systems, data security, application security, applied cryptography.

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.

Client-provided location(s): London, UK
Job ID: TikTok-7103459925774944549
Employment Type: Other

Perks and Benefits

  • Health and Wellness

    • Health Insurance
    • Dental Insurance
    • Vision Insurance
    • HSA
    • Life Insurance
    • Fitness Subsidies
    • Short-Term Disability
    • Long-Term Disability
    • On-Site Gym
    • Mental Health Benefits
    • Virtual Fitness Classes
  • Parental Benefits

    • Fertility Benefits
    • Adoption Assistance Program
    • Family Support Resources
  • Work Flexibility

    • Flexible Work Hours
    • Hybrid Work Opportunities
  • Office Life and Perks

    • Casual Dress
    • Snacks
    • Pet-friendly Office
    • Happy Hours
    • Some Meals Provided
    • Company Outings
    • On-Site Cafeteria
    • Holiday Events
  • Vacation and Time Off

    • Paid Vacation
    • Paid Holidays
    • Personal/Sick Days
    • Leave of Absence
  • Financial and Retirement

    • 401(K) With Company Matching
    • Performance Bonus
    • Company Equity
  • Professional Development

    • Promote From Within
    • Access to Online Courses
    • Leadership Training Program
    • Associate or Rotational Training Program
    • Mentor Program
  • Diversity and Inclusion

    • Diversity, Equity, and Inclusion Program
    • Employee Resource Groups (ERG)

Company Videos

Hear directly from employees about what it is like to work at TikTok.