Senior Network Engineer - IT Infra Global - London

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 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 products are built to help imaginations thrive. This is doubly true of the teams that make our innovations possible. Together, we inspire creativity and enrich life - a mission we aim towards achieving every day. To us, every challenge, no matter how ambiguous, 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 users we serve. Join us.

Team Introduction
The IT Infra Global Network Engineering team is responsible for the architecture, design, vendor selection, implementation & operation of the global enterprise network solution consisting of enterprise wide design standards, global backbone, co-location facilities, internet peering, regional branch office WAN services and other subsidiaries.

The role of the Network Engineer is to establish design solutions, standards, documentation & tools to improve the Bytedance network infrastructure so it can be run as a reliable quality user service. Expectations of the role are to enhance infrastructure reliability, quality, user experience across Bytedance, Corporate network, colocation facilities, office wireless service, and NaaS customers.

The successful candidate will have a strong technical background experienced in designing & deploying network LAN, WAN, WiFi, firewall & VPN solutions across global office & backbone infrastructure. They must be experienced in driving technology enhancements & direction to drive service improvements to scale a global enterprise network over time as an organization rapidly grows.


Responsibilities
- Develop standards-based network designs for the company's office and backbone infrastructure.
- Delivery of robust and comprehensive design documentation, incorporating best practices which address disaster recovery, incorporate test / compliance cycles and ensure as-build deployments meet design specs.
- Familiarity with design and deployment of controller based WLAN architecture, as well as cloud-based/controller-less enterprise WiFi solutions; experience with WiFi planning, post-install verification testing and user experience monitoring / modeling.
- Experience with network security, authentication and identity for wired and wireless 802.1X clients; Preferred background with Cisco ISE (Identity Services Engine).
- Evaluate new products, features and technologies which improve service availability and reduce costs, while providing comprehensive analysis and detailed implementation recommendations.
- Drive an embedded and pervasive security model into all aspects of network and voice infrastructure, site / backbone interconnectivity and to partner managed sites.
- Perform as Tier 3 escalation in support of IT operational organization during complex highly impactful outages that can cross multiple functional domains, involving chronic recurring problems, vendor product bugs and other critical network functionality.
- Participate in following the sun on-call rotation.
- Vendor Management - maintain relationships with major product manufacturers and service providers, understanding product capability and placement; driving QBR content/direction and influencing service and product capabilities and roadmaps.
- Produce quality detailed documentation through the entire project delivery life-cycle and lead by example producing best-in-class design, deployment and operational documentation to cover all aspects of infrastructure systems ... from architecture, topology, support models, maintenance, troubleshooting runbooks, deployment cookbooks, disaster recovery, technotes, testing, etc.
- Automation - Drive simple and scalable approach to new technology solutions using automation to enable the organization to easily deploy and operate new features, capabilities and functionality.
- Coach, mentor, and motivate team members and contractors, providing positive career and personal growth.
- Capacity Management - Drive development of capacity planning model and tools, including ownership of decisions regarding upgrade planning and contract negotiations
- Working globally - Ability to work effectively as a regional/remote team member, owning tasks to completion and socializing across team(s) to gain feedback
- Set, own and continually manage technology project expectations with team members and stakeholders.
- Assist with identifying and screening future team members.Minimum Qualifications
- 5+ years combined experience with networking, firewall, standards, certification testing, design life-cycle and documentation.
- In-depth experience and understanding of WAN, ISP peering, BGP, QoS, IPv4/IPv6, DNS/DHCP, firewalls, wireless and L2 switching.
- Experience with Cisco , Fortinet and Velocloud SDWAN design , troubleshooting and deployment
- Must have design and deployment experience with Cisco routing and switch products and beneficial to have Cisco 802.1x wired/ wireless, Aruba Wireless
- On-call rotation and occasional domestic and international travel will be necessary.
- Strong technical leadership, teamwork, collaboration and communication skills.
- Must have automation/scripting skills - proficiency in Python, Ansible or Terraform.

Preferred Qualifications
- Cisco and Palo Alto Certifications: CCNP, CCDP, CCIE, PCSNE.
- Zero trust proxy solutions
- Hybrid data center and multi-cloud routing
- Experience with DDoS protection and mitigation
- Hamina or Ekahau wifi survey and design
- Experience with Fortinet, Ruijie, Palo Alto, and Juniper Firewall

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.