Sr Engineer, Site Reliability [T500-21295]

About T-Mobile T-Mobile US, Inc. (NASDAQ : 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.

About TMUS Global Solutions

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. :

About the Role

The Senior Systems Reliability Engineer (SRE) ensures the stability, performance, and reliability of IT services and infrastructure. This role combines software engineering and operations expertise to build and maintain highly available, scalable systems. As a leader in DevOps and cloud reliability practices, the engineer supports continuous improvement of automation, deployment pipelines, observability, and incident management, while mentoring junior engineers and optimizing production workflows.

The position plays a critical part in enabling software to be delivered faster, better, and more reliably to support business and customer needs.

What You’ll Do :

Design and maintain CI / CD pipelines and DevOps automation solutions

Guide incident response and improve system resiliency and performance

Build monitoring tools, dashboards, and proactive alerting for non-production environments

Create and maintain infrastructure as code (IaC) for scalable environments

Work with containerization and microservices in cloud-native platforms

Mentor junior engineers and collaborate across teams on cloud and DevOps initiatives

Improve software delivery processes through automation, cloud migration, and service orchestration

Perform other duties and technical projects as assigned

What You’ll Bring :

Bachelor’s degree in Computer Science, Software Engineering, or related field (Master’s preferred)

4–7 years of experience in systems reliability, DevOps, or cloud infrastructure engineering

Experience with CI / CD tools like Jenkins, GitLab CI, or CloudBees

Familiarity with infrastructure and configuration management tools (Ansible, Chef, Puppet)

Hands-on knowledge of public and private cloud platforms

Experience with application performance monitoring (APM) and log aggregation tools

Proven experience working in Agile and DevOps environments

Must Have Skills :

Programming language : ( Python (Java / JavaScript)

Cloud platforms, (AWS / Azure / GCP)

Understanding of infrastructure Automation with IaC (Terraform, CloudFormation, Pulumi, Ansible)

CI / CD pipelines (GitHub Actions, GitLab CI, Jenkins, Argo CD).

Containers (Dockers, Kubernetes),

Observability : Prometheus, Splunk Grafana,

Nice To Have :

Experience with Kubernetes, Docker, or other container technologies

Familiarity with AppDynamics, Splunk, ELK, Prometheus, or Grafana

Understanding of service-level objectives (SLOs), SLIs, and error budgets

Experience in cloud migration and cloud-native systems architecture

Background in performance, security, or availability testing practices

ITSM framework.

CloudWatch, Datadog,