Senior Cloud Network Architect – Hybrid & Multi-Cloud

T-Mobile; Bellevue (WA); On-site; USD 98,000 - 177,000; Full time

Benefits offered by this job

Stock grant

Employee stock purchase plan

401(k)

Paid time off and holidays

Job summary

T-Mobile is seeking a Sr. Systems Design Engineer (Cloud Network) in the Bellevue area to design, implement, and operate hybrid cloud network infrastructure connecting multi-cloud environments to on-premises datacenters.

Role focuses on hub-spoke topology, BGP routing, DNS, IaC with Terraform, and network automation using Python. You will own reliability, drive automation, and participate in on-call duties to ensure robust, secure cloud networking services.

Qualifications

• Bachelor’s degree plus 5 years of related work experience or advanced degree with 3 years.

Responsibilities

• Design and implement hub-spoke cloud network topologies across AWS, GCP and Azure, including Transit Gateway, Cloud router, Virtual WAN, and shared VPC/subnet architectures
• Own hybrid DC interconnect — design, deploy, and operate AWS Direct Connect, GCP interconnect and Azure ExpressRoute circuits in active-active and active-passive configurations
• Configure and troubleshoot BGP routing policies (AS path prepending, local preference, MED, community strings) across cloud-to-datacenter interconnects
• Design and maintain hybrid DNS architecture using Route 53 Private Resolver, Azure DNS Private Resolver, GCP DNS zones, conditional forwarding, and split-horizon DNS
• Configure and manage Azure, AWS and GCP firewalls and troubleshoot and fix the issues
• Author and maintain Terraform modules for network infrastructure; enforce IaC state management, remote backends, and peer-reviewed change processes
• Automate network operational tasks using Python and Boto3/Azure SDK (cross-account security group audits, routing validation, connectivity checks)
• Own SRE and on-call responsibilities for cloud network functions; drive post-incident root cause analysis and eliminate recurring manual remediations
• Collaborate asynchronously with distributed teams (US principal engineers, India peers, datacenter network teams) using documented designs, Confluence/Jira, and structured async handoffs
• Supervise and mentor associate engineers; contribute to runbook development and knowledge documentation
• Also responsible for other duties/projects as assigned by business management as needed

Skills

Hub-Spoke Cloud Network

BGP Routing

Hybrid DC Interconnect

SRE On-Call

Python Scripting

Terraform

Cloud Networking

Async Collaboration

Education

Bachelor’s Degree in CS/CE/Network Eng

Advanced degree (MS/PhD) in related field

Tools

AWS

Azure

GCP

Terraform

Job description

T-Mobile is seeking a Sr. Systems Design Engineer (Cloud Network) in the Bellevue area to design, implement, and operate hybrid cloud network infrastructure connecting multi-cloud environments to on-premises datacenters.

Role focuses on hub-spoke topology, BGP routing, DNS, IaC with Terraform, and network automation using Python. You will own reliability, drive automation, and participate in on-call duties to ensure robust, secure cloud networking services.