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T-Mobile Logo T-Mobile · IT - Software Development

Sr Engineers, Software

United States, Bellevue Employment contract 212202.00 - 217202.00 USD / Year · Job Posted July 03, 2026
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Job Description

Sr Software Engineers located in Bellevue, WA will architect, develop, and implement cloud-native applications and scalable telemetry solutions using Golang, Kubernetes, and related technologies.

Job Responsibility

  • Responsible for building 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

Requirements

  • Experience utilizing multiple programming languages including Python, Go, Java, and JavaScript, with production-level development
  • and experience 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 microservices that are stateless and configurable, connecting 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
  • 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
  • At least 18 years of age
  • Legally authorized to work in the United States

What we offer

  • Annual stock grant
  • employee stock purchase plan
  • 401(k)
  • access to free, year-round money coaches
  • medical, dental and vision insurance
  • flexible spending account
  • employee stock grants
  • paid time off and up to 12 paid holidays
  • paid parental and family leave
  • family building benefits
  • back-up care
  • enhanced family support
  • childcare subsidy
  • tuition assistance
  • college coaching
  • short- and long-term disability
  • voluntary AD&D coverage
  • voluntary accident coverage
  • voluntary life insurance
  • voluntary disability insurance
  • voluntary long-term care insurance
  • mobile service & home internet discounts
  • pet insurance
  • commuter and transit programs
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