Senior Software Engineer - Authentication

Cresta unlocks the true potential of the customer experience, turning every conversation into a competitive advantage. Cresta’s unified AI platform combines conversational AI agents, real-time human agent augmentation, and comprehensive conversation intelligence to drive revenue and efficiency gains across every channel. The world’s leading companies, including United Airlines, Cox Communications, and Marriott, use Cresta to power world-class customer experiences every day. Born from the Stanford AI Lab, Cresta has raised more than $270 million from the world’s leading investors, including a16z, Greylock, and Sequoia. Cresta’s leadership includes some of the leading minds in AI today. Our CEO, Ping Wu , founded and led Google's Contact Center AI and Vertex AI platforms before joining Cresta to build the future of AI-driven customer experiences. Over the next few years, AI is going to redefine how people all over the world interact with businesses every day. Come build that future at Cresta. About the role: Cresta’s Core Platform underpins the company’s entire product portfolio. Our long term vision is to build a robust, reliable, secure, and extensible foundation that supports continued innovation, satisfies enterprise customer requirements, and keeps operational costs in check. One critical component for that are scalable authentication systems, tools, processes and frameworks based on industry standards and security best practices. Our authentication team will be responsible for building, maintaining and delivering these requirements. The authentication team will work closely with our security team and the different teams that depend on these utilities and frameworks to meet Cresta’s diverse authentication and security needs for internal workflows and external customer facing integrations. Responsibilities: Play a substantial role in the platform frontend and authentication engineering team. Work with Cresta product and engineering teams, build and continuously improve the Cresta platform and new product requirements. Stay closely with customers and their requirements, analyze the technical tradeoffs, own the customer facing deliverables. Demonstrate the engineering best practices in deliverables and daily work. Uphold others to the same high standards. Technical ownership in a substantial part of the Cresta authentication stack. Contribute to building the best-in-class company in addition to building the best-in-class product. Full stack support for Cresta’s 1st party and 3rd party authentication systems (frontend and backend). The authentication team is responsible for building systems to authenticate users, service accounts, virtual agents, server workloads, cloud based authentication for external integrations, etc. Expanding Cresta’s BYOID (Bring Your Own Identity) repertoire. Securing sign-in (password authentication, multi-factor authentication, etc) and application access. Building customized, streamlined and frictionless customer-specific auto-login systems. Improving and migrating from legacy authentication systems to more modern industry-based, standardized and secure systems. What we are looking for: Bachelor’s degree in Computer Science or related field. Strong Computer Science fundamentals. 8+ years of experience in relevant domains (Identity and Access Management). Very solid coding skills. Experience in various authentication protocols (OAuth 2.0, OIDC, SAML 2.0, FIDO 2.0, etc). Golang for backend services (gRPC, Protobuffers). Postgres, Redis, Kubernetes, Cloud based services (AWS), etc. Familiar with React or Angular. Have used at least one of them in large scale consumer-facing products. Proficient in designing and maintaining clear end-to-end authentication systems. Experience as a technical lead of full stack supporting various authentication and security product features. Perks & Benefits: We offer Cresta employees a variety of medical, dental, and vision plans, designed to fit you and your family’s need