Staff Software Engineer (L4)

See yourself at Twilio

Join the team as Staff Backend Engineer on Twilio’s Flex Engineering.

About the job

As a Staff Backend Engineer on the Twilio Flex Engineering team, you will set technical direction for the systems that power TaskRouter, the real time engine that decides how every contact center interaction reaches the right person. You will operate as the senior technical leader across multiple services, owning the architecture for problems that span multiple quarters and organizational boundaries, and you will be accountable for how the platform scales, performs, and stays available as customer demand grows. You will author and defend the designs that go to Twilio's architecture review boards, make tradeoff decisions that carry long term consequences, and raise the engineering bar across a team distributed across the world. Additionally, you will have significant influence on roadmap priorities and on how Flex delivers against Twilio's goal of being the world's most trusted customer engagement platform.

If you thrive in fast-moving environments, enjoy working on scalable systems, and are passionate about building high-performance backend services, this role is for you.

Responsibilities

In this role, you’ll:

• Design, develop, and maintain backend services that power Twilio Flex’s high scale TaskRouter system.
• Set and own the technical direction for a set of high scale, business critical backend services running on AWS, and hold the architectural vision as it evolves
• Lead the design of large distributed systems changes, covering scalability, data architecture, fault isolation, and migration strategy
• Raise availability and resilience for Tier 0 systems, and make deliberate tradeoffs between reliability, cost, and delivery speed
• Partner with peer engineering teams, platform teams, and product to align on designs and unblock shared dependencies
• Raise the engineering bar through design review, code review, and direct mentorship of senior and mid level engineers
• Drive operational excellence through observability, gamedays, incident response, and converting recurring issues into permanent fixes
• Influence roadmap priorities with engineering and product leadership, and represent the team's technical position across the wider organization

*Required:

• 8+ years of experience writing production-grade backend code in a modern programming language (e.g., Java, Golang, Python, Scala, or similar).
• Strong fundamentals and experience in building fault tolerant 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 APIs.
• Experience with database technologies like MySQL, PostgreSQL or DynamoDB.
• Strong debugging and troubleshooting skills for complex distributed applications.
• Experience shipping services (products) following the CI/CD development paradigm.
• Effective communication skills and ability to collaborate in a fast-paced team environment.
• Comfortable with ambiguity and problem-solving in a rapidly growing company.

Desired:

• Experience working with event streaming technologies (Kafka, Pulsar, or similar).
• Familiarity with containerization and orchestration tools (Docker, Kubernetes).
• Solid grasp of Linux systems and networking concepts.
• 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.

Location

This role will be remote, and based in India - Karnataka, Tamil Nadu, Telangana State, Maharashtra and New Delhi.