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T-Mobile Logo T-Mobile · IT - Administration

Sr Administrators, Database

United States, Atlanta Employment contract 127878.00 - 135000.00 USD / Year · Job Posted May 04, 2026
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Job Description

T-Mobile is America’s supercharged Un-carrier, delivering an advanced 4G LTE and transformative nationwide 5G network that will offer reliable connectivity for all. Sr Administrators, Database is located in Atlanta, GA and will apply deep understanding of Datastax Enterprise Cassandra architecture and internal frameworks to architect scalable distributed and geo-redundant Cassandra database solutions to handle millions of transactions per hour.

Job Responsibility

  • Install, configure, apply patches and upgrade binaries of Datastax Enterprise Cassandra database software on Linux Servers
  • Configure backup, restore and monitor the backup jobs using Cohesity tool
  • Apply experience in configuring and using Datastax Opscenter, Prometheus, Grafana tools to setup effective monitoring for alerts, cluster availability, performance and capacity analysis and take preventive actions based on alerts
  • Configure and tune the Database and Operating system environment for optimal performance and resource utilization and guide developers on optimal schema designs for better performance and scalability
  • Administer Datastax Enterprise Cassandra clusters in support of T-Mobile business including adding/bootstrapping/removing nodes, consistency tuning, replication and multi-DC configuration
  • Enforce enterprise security policies and procedures on databases by creating key spaces, users and managing the user connections, passwords
  • Apply advanced knowledge of various troubleshooting and tuning tasks, including Latency Analysis, Thread state Analysis, cassandra.yaml parameter changes, JVM tuning, compaction and repair with emphasis on issue resolution under 90 minutes
  • Apply advanced knowledge of shell scripting, including command line applications, and batch files to write and maintain shell and CQL scripts in support of database operations

Requirements

  • Bachelor’s degree or foreign equivalent in Computer Science, Computer Programming, Computer Engineering, or related, and 5 years of relevant work experience OR Master’s degree or foreign equivalent in Computer Science, Computer Programming, Computer Engineering, or related, and 3 years of relevant work experience
  • Database administration with Datastax Enterprise Cassandra which includes DSE components (DSE Core, Search, Analytics/Spark, Graph), Security Management(LDAP, SSL/TLS, Role Based Access(RBAC), audit logging, encryption at rest/in transit), Backup and disaster recovery, planning and testing Datacenter failover procedures. Analyzing logs and metrics for root cause analysis of latency, timeouts, and node failures. Rolling upgrades, patch management, and minimizing downtime in Production
  • Design, configure and manage highly available, scalable and fault-tolerant Datastax Enterprise Cassandra clusters on on-prem and AWS EC2 instances using Ansible, Terraform and AWS Cloud Formation
  • Writing and optimizing CQL scripts, including UDF's(User-Defined functions), Materialized Views and Schema changes ensuring better performance and availability using CQLSH, DataStax Studio, DBeaver, Liquibase
  • Automating administrative and operational tasks using Linux/Unix Shell, Python, Ansible scripts. Enabling streamlined system management, configuration, and deployment processes across distributed environments
  • Advanced performance tuning and troubleshooting of Datastax Enterprise Cassandra clusters including JVM tuning, GC tuning, thread management and disk I/O optimization using nodetool, JConsole and DSE Metrics Collector
  • Monitoring and visualizing database performance, replication health, and cluster metrics using tools Prometheus, Grafana, DataStax OpsCenter
  • Deploying and managing Datastax Enterprise Search (SOLR integration) for implementing full-text search capabilities on NoSQL datasets, including configuring schema.xml, solrconfig.xml, and managing SOLR cores for optimized indexing and querying
  • At least 18 years of age
  • Legally authorized to work in the United States

What we offer

  • competitive base salary
  • annual stock grant
  • employee stock purchase plan
  • 401(k)
  • access to free, year-round money coaches
  • annual bonus or periodic sales incentive or bonus
  • medical, dental and vision insurance
  • flexible spending account
  • paid time off
  • 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
  • access to commuter and transit programs
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