Sr Engineers, Software

Position

Sr Software Engineer located in Bellevue, WA responsible for architecting, developing, and implementing cloud-native applications and scalable telemetry solutions using Golang, Kubernetes, and related technologies.

Responsibilities

• Build reliable, distributed systems that deliver high performance, observability, and operational visibility at scale.
• Design and develop cloud-native infrastructure and APIs using Go and Python, building custom Kubernetes controllers and operators to automate platform operations.
• Develop microservices and APIs in Golang, enabling infrastructure self‑service and improving developer productivity using standards like Swagger and WSDL.
• Architect multi‑cloud infrastructure across AWS and Azure using EC2/VMs, VPC/VNet, Load Balancers, RDS/Azure SQL, S3/Blob Storage, KMS/Key Vault, and DNS/IAM services.
• Implement observability platforms using Prometheus, Thanos, Grafana, OpenTelemetry, Splunk, and Outcold for metrics and logging.
• Automate infrastructure provisioning and delivery with Terraform, Ansible, GitOps (Flux), and GitLab CI pipelines.
• Ensure security and compliance with OPA/Gatekeeper, Kubernetes network policies, and tools like Wiz.
• Manage Kubernetes workloads with Containerd, Istio, and NGINX Ingress; implement autoscaling (KEDA), progressive delivery (Flagger), disaster recovery (Velero, ETCD), and stateful storage management with Portworx.
• Architect and manage GPU‑optimized Kubernetes clusters for AI/ML workloads using NVIDIA GPU nodes; streamline multi‑cluster operations with platforms like Spectro Cloud.
• Troubleshoot and debug Linux environments using Bash, systemd, and journalctl to ensure stability and resolve issues in cloud‑native and containerized platforms.
• Telecommuting is permitted, but applicant must work from the worksite location at least 3–4 days per week.
• No additional national or international travel is anticipated.

Skill Requirements

• Experience utilizing multiple programming languages including Python, Go, Java, and JavaScript with production‑level development; designing RESTful APIs, gRPC services, and event‑driven applications.
• Experience deploying and managing Kubernetes clusters on AWS EKS, Azure AKS, and on‑premises using Kubeadm and Spectro Cloud; configuring ContainerD and Docker, RBAC, network policies, Istio and Cilium service meshes; and designing scalable micro‑services architectures.
• Experience designing and deploying cloud‑native software systems using 12‑Factor principles, including building stateless and configurable microservices that connect to external services.
• Experience utilizing Ubuntu, RHEL, and Flatcar Linux operating systems, including Bash scripting, troubleshooting kernel, network, and performance issues, and conducting root cause analysis of system and software failures.
• Experience utilizing DevOps tools including GitLab CI/CD for automated build, test, and deployment; Terraform and Ansible for Infrastructure‑as‑Code with reusable modules; and secrets management using Vault and KMS.
• Experience utilizing Prometheus and Grafana for monitoring, OpenTelemetry for tracing, Splunk for logging, and using observability data to improve performance and reliability.

Experience and Education Requirements

PRIMARY REQUIREMENTS: Bachelor’s degree in Computer Engineering or a related field, or the foreign equivalent, and 5 years of related work experience.

ALTERNATIVE REQUIREMENTS: Master’s degree in Computer Engineering or a related field, or the foreign equivalent, and 3 years of related work experience.

Additional

• Location: Bellevue, WA
• This position is eligible for the employee referral program.
• At least 18 years of age.
• Legally authorized to work in the United States.

Travel

No travel required.

Pay

Washington Pay Range: $212,202.00 to $217,202.00 per year.

EEO Statement

T-Mobile USA, Inc. is an Equal Opportunity Employer. All decisions concerning the employment relationship will be made without regard to age, race, ethnicity, color, religion, creed, sex, sexual orientation, gender identity or expression, national origin, religious affiliation, marital status, citizenship status, veteran status, the presence of any physical or mental disability, or any other status or characteristic protected by federal, state, or local law. Discrimination, retaliation or harassment based upon any of these factors is wholly inconsistent with how we do business and will not be tolerated.

Accommodation

If you are an individual with a disability and need reasonable accommodation at any point in the application or interview process, please let us know by emailing or calling 1‑844‑873‑9500. This channel is not a means to apply for or inquire about a position and we are unable to respond to non‑accommodation related requests.