Staff, Software Engineer (L4)

Twilio is a company shaping the future of communications, empowering businesses and developers worldwide. They are seeking a Staff Software Engineer for the Stytch team to design and implement backend systems for secure identity experiences, collaborating closely with product and engineering leadership.

Responsibilities:

• Build and own backend product capabilities for Stytch’s identity platform on Twilio—shipping new API surfaces and core authentication flows, including agentic and non-human identity use cases
• Design, implement, and maintain scalable, reliable distributed services, optimizing for security, latency, and developer experience
• Partner with Product and Engineering leadership to set direction, translate customer needs into technical plans, and deliver high-impact roadmap features
• Collaborate across Twilio and Stytch teams to align on architecture, integrate platform capabilities, and unblock cross-team initiatives
• Operate with deep technical ownership: author design docs, drive key technical decisions, review code, and stay close to the systems you ship
• Build in ambiguity—break down complex problems, make pragmatic tradeoffs, and adopt new technologies or strategies when they improve outcomes
• Improve production quality and resilience through strong observability, incident response and remediation
• Mentor and support other engineers through pairing, feedback, and knowledge-sharing, helping raise the team’s technical bar and culture

Requirements:

• 7+ years experience in designing, building and operating high-scale, mission critical cloud based production systems
• Familiarity with a production-grade code base in a modern programming language, applying best practice coding standards and writing high quality code
• Experience designing technical services and leading teams through implementation
• Extensive experience with RESTful API design and development
• Bachelor's degree in Computer Science or related industry experience
• Excellent written and verbal communication skills
• Schedule: ability to work non-standard, on-call rotation weekend and holiday hours
• Familiarity with Go, Kubernetes, and DynamoDB
• Experience building developer tools and/or internal platforms that improve velocity and reliability
• Experience designing and building highly reliable back end systems
• Builder at heart. Through a hobby or your profession, you are passionate about being hands on and seeing your work come to life