Senior Software Engineer - L3

Senior Software Engineer – L3

4+ years of experience writing production-grade backend code in a modern programming language (e.g., Golang, Python, Java, Scala, or similar)
Strong fundamentals in distributed systems, event-driven architectures, and database design
Experience working with AWS cloud-based infrastructure
Well-versed in designing and building high-scale, low-latency services/APIs
Solid grasp of Linux systems and networking concepts
Strong debugging and troubleshooting skills for complex distributed applications
Effective communication skills and ability to collaborate in a fast-paced team environment
Comfortable with ambiguity and problem-solving in a rapidly growing company

Design, develop, and maintain backend services that power Twilio Segment’s high scale data platform
Build scalable and high-performance APIs and data pipelines to support customer data orchestration
Improve the reliability, scalability, and efficiency of Segment’s backend systems
Collaborate with cross-functional teams including product, design, and infrastructure to deliver customer-focused solutions
Drive best practices in software engineering, including code reviews, testing, and deployment processes
Ensure high operational excellence by monitoring, troubleshooting, and maintaining always-on cloud services
Contribute to architectural discussions and technical roadmaps that align with Twilio’s CXaaS vision and Segment’s strategic initiatives

Experience working with event streaming technologies (Kafka, SQS, or similar)
Experience with database technologies like DynamoDB, PostgreSQL, or Databricks SQL
Familiarity with containerization and orchestration tools (Docker, Kubernetes)
Background in building multi-tenant SaaS platforms at scale
Experience working with observability tools such as Prometheus, Grafana, or Datadog
Experience working in a geographically distributed team