Head of reliability

TMUS), headquartered in Bellevue, Washington, is America’s supercharged Un-carrier, connecting millions through its strong nationwide network and flagship brands, T-Mobile and Metro by T-Mobile. Customers benefit from an unmatched combination of value, quality, and exceptional service experience. TMUS Global Solutions is a world-class technology powerhouse accelerating the company’s global digital transformation. With a culture built on growth, inclusivity, and global collaboration, the teams here drive innovation at scale, powered by bold thinking. TMUS India Private Limited is a subsidiary of T-Mobile US, Inc. and operates as TMUS Global Solutions. The Principal Engineer, Site Reliability (SRE) will play a critical role in ensuring the stability, scalability, and operational excellence of Accounting and Finance platforms. This role is focused on leading the operational health of these platforms, ensuring the delivery of highly reliable financial applications and data services that meet the demanding requirements of accuracy, compliance, and availability to support business operations. As a Principal SRE, you will build automation, implement monitoring, improve incident response, and champion Dev Ops practices that enable Finance and Accounting systems to operate with consistency and trustworthiness, while also coaching and mentoring junior SREs to ensure overall operational excellence. Operational Oversight: Own day-to-day operations for Accounting and Finance applications and data platforms, ensuring they run smoothly and meet business expectations. Ensure Accounting and Finance platforms meet defined SLAs, SLOs, and SLIs for performance, reliability, and uptime. Automation & Efficiency: Build automation for deployments, monitoring, scaling, and self-healing capabilities to reduce manual effort and operational risk. Observability & Monitoring: Implement and maintain comprehensive monitoring, alerting, and logging for accounting applications and data pipelines (e.g., Snowflake, dbt workflows, ERP integrations). Incident Response: Lead and participate in on-call rotations, perform root cause analysis, and drive improvements to prevent recurrence of production issues. Establish and enforce best practices for capacity planning, performance tuning, disaster recovery, and compliance controls in financial systems. Collaboration with Engineering & Finance: Partner with software engineers, data engineers, and Finance/Accounting teams to ensure operational needs are met from development through production. Manage workload, priorities, and escalations for operations staff and partner teams, ensuring alignment with SLAs and compliance requirements. Security & Compliance: Ensure financial applications and data pipelines meet audit, compliance, and security requirements. Drive post-incident reviews, implement lessons learned, and proactively identify opportunities to improve system resilience. Ensure operational practices meet internal controls, audit requirements, and financial compliance standards. Bachelor’s in computer science, Engineering, Information Technology, or related field (or equivalent experience). ~12-15 years of experience in Site Reliability Engineering, Dev Ops, or Production Engineering, ideally supporting financial or mission-critical applications. ~ Strong experience with monitoring/observability tools (Datadog, Prometheus, Grafana, Splunk, or equivalent). ~ Hands-on expertise with CI/CD pipelines, automation frameworks, and Ia C tools (Terraform, Ansible, Git Hub Actions, Azure Dev Ops, etc.). ~ Familiarity with Snowflake, dbt, and financial system integrations from an operational support perspective. ~ Strong scripting/programming experience (Python, Bash, Go, or similar) for automation and tooling. ~ Experience ensuring compliance, security, and audit-readiness in enterprise applications. SQL Snowflake OR Databricks Dev Ops OR CICD OR Git Hub Actions monitoring/observability tools (Datadog, Prometheus, Grafana, Splunk, or equivalent)Automation Experience supporting financial applications (ERP, revenue recognition systems, accounting platforms). Exposure to Fin Ops practices for optimizing cloud spend in finance-related platforms. Familiarity with containers and orchestration (Docker, Kubernetes). Experience building resilience into data pipelines and ensuring auditability for accounting data. Strong communication skills to articulate operational issues and risks to both technical and non-technical stakeholders.