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Site Reliability Engineer - Security Engineering

Job in London, Greater London, EC1A, England, UK
Listing for: TikTok
Full Time position
Listed on 2025-12-30
Job specializations:
  • IT/Tech
    Cloud Computing, Systems Engineer, IT Project Manager, SRE/Site Reliability
Job Description & How to Apply Below
Site Reliability Engineer - Security Engineering - London

Location:

London

Employment Type:

Regular

Job Code:

A38276

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Responsibilities

About The Team The security engineering team is missioned to build security services, 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 will also have opportunities to go through the whole lifecycle of security products or services, be encouraged to participate in each phase and each part of the projects to have the whole picture of what we 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, we are currently seeking experienced SRE to deliver insights from massive-scale security systems in real time. You will not only address those regular day-to-day technical problems but also are encouraged to bring fresh ideas, investigate the existing infrastructure, 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.

Responsibilities
- Lead or drive an SRE team to design and implement the security SRE framework for the company's security infrastructure, and build cutting-edge SRE technologies for system deployment, upgrade, capacity planning and rapid troubleshooting and disaster recovery.

- With cutting edge technologies, drive the implementation and the improvement of automation and the intelligence of the SRE infrastructure and evolve it into a platform; build 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.

- Drive the design and development of the SRE infrastructure and maintenance tools for the full lifecycle of security system development; support the rapid iteration and system reliability of the company's security services.

- Coordinate support to cross-functional teams and external customers with security products and services.

- Responsible for building, scaling, managing and coaching the SRE team, as well as driving technical decisions as a leader.

Qualifications

Minimum Qualifications
- Bachelor's degree in Computer Science or related fields, with minimum 3+ years of relevant experience in developing and maintaining large-scale distributed SRE platform/tooling with automation.

- Solid programming skills, mastering at least one of the programming skills such as Go/Java/Python/Shell, and being able to deliver high quality code;
Familiar with at least one of the web frameworks, such as Gin/Django/Spring, with a decent understanding of their design principles.

- Experienced and hands-on skills in debugging, troubleshooting and optimization of sophisticated distributed systems and platforms.

- Deep understanding of OS (Linux, windows), Network (TCP/IP, HTTP, etc), with good exposure to network, storage, as well as computer architecture.

- Familiar with Redis/MySQL/Postgre

SQL database architecture and working principle, familiar with daily operation and maintenance including but not limited to high availability cluster construction, monitoring, backup, fault handling, Performance optimization.

- Familiar with cloud native framework with experience in Kubernetes. Good experience with SRE tools such as Ansible, ELK, Prometheus and Grafana.

Preferred Qualifications
- Passionate about self-studying cutting edge technologies and staying relevant. Strong communication and collaboration skills, and willing to take ownership.

Job Information

About Tik Tok

Tik Tok is the leading destination for short-form mobile video. At Tik Tok, our mission is to inspire…

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