Site Reliability Engineer, Network and Traffic - USDS

Responsibilities
The infrastructure team of US Tech Services Department at TikTok supports the company's fast growth by building and operating hyper-scale datacenters, managing the life cycle of server fleet, providing cloud solutions, and developing various infrastructure services and making sure they are scalable and are reliable.

Site Reliability Engineering (SRE) combines software and systems engineering to build and run large-scale, massively distributed infrastructures. Our SREs are tasked to ensure the infrastructure services are reliable, fault-tolerant, efficiently scalable and cost-effective.

In order to enhance collaboration and cross-functional partnerships, among other things, at this time, our organization follows a hybrid work schedule that requires employees to work in the office 3 days a week, or as directed by their manager/department. We regularly review our hybrid work model, and the specific requirements may change at any time.

Responsibilities
- Design, build, operate and optimize TikTok network, not limited to, backbone, public cloud and Edge/CDN.
- Design, manage, operate and contribute to the development of our Layer7 Load Balancer, CDN origin and DNS.
- Troubleshoot network and / or traffic issues in partnership with our Data Center Partners.
- Work with cross-functional teams including but not limited to compute, storage, database, application teams to drive the innovation and evolution of TikTok network.
- Work with external vendors and ISPs for device and carrier selection, perform testing and verification.
- Participate in the global oncall rotation to support production traffic and networking issues.

Qualifications
Minimum qualifications:
- Good understanding of network protocols including TCP/IP, RSVP, DHCP, BGP, OSPF/IS-IS and MPLS related technologies.
- Good understanding of network monitoring protocols and tools, such as SNMP, Sflow/netflow, Telemetry.
- Hands on experience with one or more of the following: Load Balancers, DNS, CDN origin, Datacenter networking.
- Familiar with data center network architecture, such as CLOS.
- Self-motivated, good communication, written skills and team player.
- Bachelor's in Computer Science or a related field, or experience of three or more years in related field.

Preferred qualifications
- Significant experience configuring and optimizing Nginx.
- In-depth knowledge of network protocols and implementation in hyper-scale data center networks.
- In-depth knowledge of public cloud architecture, such as AWS, GCP, Azure, Ali Cloud, OCI, etc.
- Good understanding of IPv6 and IPv4-IPv6 co-existence technologies.
- Programming/scripting in Python, Go or other languages.

As a condition of employment, all successful candidates must be able to establish authorization to work in the United States. For this position, the Company does not provide sponsorship for any immigration-related benefits.

About USDS
TikTok is the leading destination for short-form mobile video. Our mission is to inspire creativity and bring joy. U.S. Data Security (“USDS”) is a subsidiary of TikTok in the U.S. This new, security-first division was created to bring heightened focus and governance to our data protection policies and content assurance protocols to keep U.S. users safe. Our focus is on providing oversight and protection of the TikTok platform and U.S. user data, so millions of Americans can continue turning to TikTok to learn something new, earn a living, express themselves creatively, or be entertained. The teams within USDS that deliver on this commitment daily span across Trust & Safety, Security & Privacy, Engineering, User & Product Ops, Corporate Functions and more.


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.


USDS Reasonable Accommodation
USDS 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/USDS-RA


Job Information
【For Pay Transparency】Compensation Description (Annually)
The base salary range for this position in the selected city is $118657 - $259200 annually.
Compensation may vary outside of this range depending on a number of factors, including a candidate’s qualifications, skills, competencies and experience, and location. Base pay is one part of the Total Package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and restricted stock units.
Benefits may vary depending on the nature of employment and the country work location. Employees have day one access to medical, dental, and vision insurance, a 401(k) savings plan with company match, paid parental leave, short-term and long-term disability coverage, life insurance, wellbeing benefits, among others. Employees also receive 10 paid holidays per year, 10 paid sick days per year and 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure).
The Company reserves the right to modify or change these benefits programs at any time, with or without notice.
For Los Angeles County (unincorporated) Candidates:
Qualified applicants with arrest or conviction records will be considered for employment in accordance with all federal, state, and local laws including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Our company believes that criminal history may have a direct, adverse and negative relationship on the following job duties, potentially resulting in the withdrawal of the conditional offer of employment:
1. Interacting and occasionally having unsupervised contact with internal/external clients and/or colleagues;
2. Appropriately handling and managing confidential information including proprietary and trade secret information and access to information technology systems; and
3. Exercising sound judgment.