Principal Software Engineer

Join the team as Twilio's next Principal Software Engineer.

This position is needed to lead the planning, design, development, and testing of large-scale software systems and new product capabilities, including cloud and internet-facing services. You'll set technical direction, drive delivery using modern engineering practices, and ensure what we ship is secure, compliant, and production-ready.

Responsibilities:

• Lead architecture and system design for complex, distributed software systems; guide teams toward scalable, maintainable solutions.
• Design, implement, and review high-quality code for core services, APIs, platforms, and/or user-facing applications.
• Translate business goals into technical roadmaps, identify tradeoffs, and align stakeholders on solution direction.
• Improve system resiliency, latency, throughput, and cost efficiency; establish SLOs/SLAs and operational practices.
• Drive standards for coding, testing, CI/CD, observability, security, and documentation; champion automation and quality.
• Partner with engineering managers, staff engineers, and product leaders to coordinate delivery across multiple teams.
• Coach and mentor engineers at all levels; lead design reviews, incident postmortems, and technical deep dives.
• Identify technical risks early (security, scalability, compliance) and drive mitigation plans.

Qualifications:

• 12+ years of experience designing and developing highly-available, high-scale, secure, mission critical native cloud enterprise SaaS applications in Java, Go or Python.
• Knowledge of architectural patterns and archetypes for building mature services, especially for distributed and multi-regional deployments.
• Excellent abilities in high level service design - modeling interfaces and internals in a proper modular, composable, and extensible way.
• Experience with AWS, GCP or other public cloud infrastructure platforms. Multi-region deployment is a plus.
• Experience building distributed systems at scale based on microservices architecture.
• Extensive experience with REST API design and implementation.
• Experience working with data architecture such as Clickhouse, Lakehouse, Snowflake.
• Experience with SQL/NoSQL databases and caches.
• Familiarity with streaming systems such as Kafka, Flink, Spark.
• Experience with container technologies - Docker/Kubernetes.
• Experience implementing modern automated testing and CI/CD pipelines.

Salary Range: Competitive pay

Experience Level: Senior

Employment Type: Full-time

Workplace Type: Remote

Category: Engineering

Industry: Technology

Salary Currency: USD

Salary Period: Year

Required Skills:

• Java
• Go
• Python
• Cloud infrastructure
• Microservices architecture
• REST API design
• Data architecture
• SQL/NoSQL databases
• Caches
• Streaming systems
• Container technologies

Preferred Skills:

• None