Principal, Software Engineer (L5) (Fully Remote)

Twilio Inc.; United States; Remote; USD 180,000 - 240,000; Full time

Job summary

Twilio is seeking a Senior Staff Engineer for the Super Network team to design and deliver major components of the carrier test and observability platform. You will build data and alerting systems that surface actionable signals and extend LLM-based troubleshooting with guardrails across our global cloud infrastructure, helping ensure reliable voice and messaging worldwide.

This remote-first role requires exceptional technical leadership, deep distributed-systems expertise, and a track record of

Qualifications

• 12+ years of software engineering at scale, including staff or principal level.
• Strong distributed systems and cloud infra expertise.
• Ability to influence through design reviews and architecture discussions.

Responsibilities

• Design and deliver major components of the carrier test and observability platform.
• Build data and alerting systems that surface actionable signals.
• Extend LLM systems for automated troubleshooting with guardrails.

Skills

Distributed systems

Event streaming

Cloud infrastructure

Communication & design reviews

Tools

LLM systems

Job description

• Twilio's Super Network team tests and assures global carrier connection quality.
• We monitor voice and messaging reliability worldwide and build operational tools.

What You'll Do:

• Design and deliver major components of the carrier test and observability platform.
• Build data and alerting systems that surface actionable signals.
• Extend LLM systems for automated troubleshooting with safe guardrails.

Who You Are:

• 12+ years of software engineering at scale, including staff or principal level.
• Deep expertise in distributed systems, event streaming, and cloud infrastructure.
• Strong communication and influence through design review.

Twilio is a customer engagement platform that delivers innovative communications solutions to hundreds of thousands of businesses and empowers millions of developers worldwide. The company is remote-first, values connection and global inclusion, and has a vibrant culture where diverse employees make a global impact.