Senior Software Engineer (Backend - Platform Team)

• 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
• Two critical components for that are agent assist backend services and scalable authentication systems, tools, processes and frameworks based on industry standards and security best practices
• This role is focused on building various backend systems needed to enable successful customer integrations:
• Enable agent assist integration for chat and email. This involves working with the frontend platform team, ML teams, infra team and other backend services
• Expand our backend agent assist services to meet customer requirements and feature requests
• Address any customer issues that block integrations, affect user experience or system performance
• Work with the auth and security team to meet Cresta’s diverse authentication and security needs for internal workflows and external customer facing integrations
• We are looking for strong versatile backend engineers who want to work at the intersection of distributed systems, real-time communication, enterprise integrations, and IAM systems
• Enterprise-Grade Integrations: Design robust integrations with major CCaaS platforms and customer systems
• Specialized Auth Experience: Join the Cresta auth team and help build specialized authentication systems to authenticate users, service accounts, virtual agents, server workloads, cloud based authentication for external integrations, etc
• Agent Assist Integrations: Work directly with the frontend platform team to build solutions for agent assist integrations for various channels such as chat and email and help rollout these integrations in customer environments
• Contribute to building the best-in-class company in addition to building the best-in-class product
• Architect systems that manage real-time conversation state, context propagation, and session lifecycle
• Play a substantial role in the agent assist integration process (chat and email) 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
• Ensure high availability, low latency, and strong observability for real-time conversation systems
• Implement authentication, authorization, compliance, and enterprise security best practices across integrations
• Drive improvements in reliability, performance, and scalability in production environments handling high interaction volumes

Benefits

• Weekly lunch & learn
• Work with an A+ team of ex-Founders, world leading scientists, and nationally competitive athletes
• Mentorship - A world class mentorship board advises and mentors our team-members to capture the opportunity ahead of us

• If you’re a strong backend engineer who wants to apply your expertise to real-world AI systems operating inside complex enterprise ecosystems, and expand your expertise in auth, this role offers that opportunity
• Strong experience designing and maintaining robust APIs (REST, gRPC)
• Solid understanding of distributed systems and real-time communication architectures
• Bachelor’s degree in Computer Science or related field
• Experience with containerized environments (Kubernetes, Docker)
• Experience with cloud platforms such as AWS, GCP, or Azure
• Experience working with CCaaS platforms or contact center systems is a strong plus
• 5+ years of experience building scalable backend systems in production environments
• Experience in building authentication systems is a plus
• Strong understanding of system reliability, observability, and security in enterprise environments
• Familiarity with AI Agents, Virtual Agents, or LLM-based systems is a plus
• Experience integrating with third-party enterprise platforms and APIs