Staff Software Engineer (L4)
Twilio · Posted Oct 6
Cloud-based customer engagement platform providing APIs for messaging, voice, email, and customer data orchestration
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About the role
Twilio's Flex Engineering team builds the cloud contact center platform that helps businesses deliver personalized customer experiences, with this role centered on TaskRouter, the real-time engine that decides how every contact center interaction reaches the right person. The team builds high-scale, fault-tolerant, event-driven backend services running on AWS. As Staff Backend Engineer, you will set technical direction across multiple services, lead large distributed systems design, and drive availability and resilience for Tier 0 systems.
What you will do
- 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
Skills used in this role
What the employer is looking for
- 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.
Preferred qualifications
- 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.
Benefits and support
- competitive pay
- generous time off
- parental and wellness leave
- healthcare
- retirement savings program
About Twilio
Twilio is a cloud communications platform-as-a-service company that allows software developers to programmatically make and receive phone calls, send and receive text messages, and perform other communication functions using its web service APIs. The company also offers customer engagement software and a customer data platform, Twilio Segment, to help businesses personalize interactions at scale. Today, it operates as a key infrastructure provider powering digital communications for brands worldwide.
- Industry
- Cloud Communications
- Company size
- 5000-10000 employees
- Founded
- 2008
- Location
- San Francisco, California, USA
- Funding stage
- Public Company
Funding
Public Company · $240M raised
- 2021-07-31Post IPO Debt
- 2018-05-01Post IPO Equity
- 2015-07-31Series E
Leadership
Chief Executive Officer
Chief Financial Officer
Chief Administrative Officer
President, Twilio Segment / Chief Revenue Officer
Chief Marketing Officer
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