Join the team as a Software Engineer for Stytch, where you'll shape the next generation of identity products. As a Fullstack Software Engineer, you will shape the next generation of the Stytch product as we bring Stytch’s capabilities to Twilio’s full customer base, delivering secure, developer-first identity experiences. Your focus will be the onboarding and integration experience for our customers - you’ll make it fast and delightful for developers to integrate Stytch and for end users to complete authentication and authorization flows, including emerging agentic and non-human identity use cases. This is a rare chance to operate like a startup within Twilio: you’ll work in a high-ownership environment with startup speed, backed by Twilio’s reach and scale. Responsibilities: Design, build and own the onboarding and integration experience for our customers, including intuitive, reliable SDK APIs that make our product easy to adopt for developers. Partner closely with Product, Design, and Engineering leadership to shape the team’s roadmap, prioritize high-impact work, and deliver features that unlock customer value quickly. Build in ambiguity: break down complex authentication and identity problems, make pragmatic tradeoffs, and deliver incremental milestones to production. Raise the bar for the quality of the products you work on through testing, versioning, documentation, backward compatibility, and smooth migration paths. Improve performance, reliability, and security of client-side flows, especially those on customers’ critical paths. Mentor and support other engineers through pairing, feedback, and knowledge-sharing, helping raise the team’s technical bar and culture. Qualifications: 3+ years of experience as a fullstack engineer delivering customer-facing web products in production using modern frontend technologies (Next.js experience is a must) Experience developing and maintaining complex web applications and/or public-facing web SDKs. Experience building developer-first APIs and tools, with a focus on integration experience. Proven ability to ship high-quality, reliable software that runs across browsers and environments. Excellent written and verbal communication skills; comfortable writing design docs and leading technical discussions. Bachelor’s degree in Computer Science or equivalent practical experience. Schedule: ability to work non-standard, on-call rotation weekend and holiday hours. Desired: Experience owning or contributing to open-source libraries or SDKs. Familiarity with authentication, identity, security, or fraud-adjacent client-side flows. Experience supporting public SDKs: release automation, semantic versioning, deprecations, and long-term maintenance. Interest in emerging identity patterns, including agentic/non-human identity and new auth workflows.
Excellent written and verbal communication skills
Authentication, identity, security, or fraud-adjacent client-side flows
Public SDKs: release automation, semantic versioning, deprecations, and long-term maintenance
Emerging identity patterns, including agentic/non-human identity and new auth workflows