Senior Software Engineer

Responsibilities:

• Design and build complex resiliency features and automation solutions that protect T-Mobile's most critical systems across multiple datacenters.
• Take full ownership of workstreams end-to-end from design through delivery within the broader architecture and technical direction set by the team.
• Work across multiple technologies and applications, operating as a trusted technical partner to application owners and platform engineers.
• Contribute meaningfully to technical design discussions bringing well-reasoned proposals, raising risks, and helping the team make better decisions.
• Mentor junior and mid-level engineers through code reviews and hands-on guidance.
• Proactively engage application owners and drive conversations to unblock delivery.
• Design and implement observability solutions, build monitoring dashboards, alerting, and health-check mechanisms to provide real-time visibility into failover readiness and execution.
• Recommend and contribute to best practices: evaluate current processes, identify gaps, and propose improvements for failover patterns, automation standards, and operational runbooks.
• Document everything: create clear, comprehensive technical documentation, architecture diagrams, runbooks, and onboarding guides that enable team scalability and knowledge transfer.

Requirements:

• 5+ years of hands-on software engineering experience across multiple technologies, languages, and system layers.
• Strong first-principles understanding of distributed systems, fault tolerance, and failure modes not just framework familiarity, but genuine depth earned through production experience.
• Demonstrated ability to take ownership of complex features and deliver them end-to-end with minimal hand-holding.
• GitLab CI/CD expertise.
• Python/Bash scripting; strong YAML skills.
• AWS and Kubernetes experience at production scale.
• Familiarity with secret management solutions (CyberArk, Vault).
• Accountability mindset: you own problems end-to-end, you don't wait to be unblocked, and you escalate with context and a proposed path forward.
• Strong documentation skills: ability to translate complex systems into clear, actionable guides.

Nice-to-Have:

• Ansible and failover engineering experience.
• Telecom or large-scale enterprise environment experience.
• Experience with observability platforms (Splunk, Grafana, Prometheus, OTEL).
• Experience using AI coding tools (Claude, GitHub Copilot, ChatGPT) as a genuine productivity multiplier, not just having tried them, but having integrated them into your workflow.