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: As a Senior Full-Stack Engineer with a backend focus, you'll help shape the future of customer engagement through cutting-edge AI. You'll play a critical role in building products that deliver timely, actionable insights and measurable business value from day one. Our team is developing state-of-the-art AI-powered capabilities that equip contact center agents with knowledge-grounded, context-aware assistance and intelligent task automation before, during, and after customer interactions. Join us as we redefine how businesses connect with their customers at scale. Responsibilities: * Design, build, and maintain scalable backend services, APIs, and distributed systems that power our AI-driven products. * Partner closely with frontend engineers, machine learning engineers, data scientists, product managers, and designers to deliver end-to-end customer experiences. * Own the reliability, performance, and scalability of production systems, proactively identifying and resolving issues before they impact customers. * Write clean, maintainable, and well-tested code, following engineering best practices and contributing to a high-quality codebase. * Participate in architecture discussions, code reviews, testing, and continuous integration efforts to ensure engineering excellence. * Design and implement secure, resilient, and highly available services that meet the demands of enterprise customers. * Analyze and evolve system architecture to improve performance, scalability, reliability, and operational efficiency. * Drive technical decisions and contribute to the team's engineering culture through mentorship, knowledge sharing, and continuous improvement. QUALIFICATIONS WE VALUE: * Bachelor's degree in Computer Science, Software Engineering, or a related technical field. * 5+ years of experience building and operating backend systems, distributed systems, or cloud-native infrastructure in production environments. * Strong proficiency in backend programming languages such as Go and Python. * Experience designing, building, and maintaining RESTful APIs and service-oriented architectures. * Hands-on experience with Elasticsearch or similar search and indexing technologies for large-scale datasets. * Solid understanding of distributed systems, microservices architectures, and cloud platforms. * Experience troubleshooting and optimizing system performance, reliability, and scalability. * Strong analytical and problem-solving skills, with a focus on delivering pragmatic solutions. * Excellent communication and collaboration skills, with the ability to work effectively across engineering and cross-functional teams. Perks & Benefits: * We offer Cresta employees a variety of medical, dental, and vision plans, designed to fit you and your family’s needs * Paid parental leave to support you and your family * Monthly Health & Wellness allowance * Work from home office stipend to help you succeed in a remote environment Compensation for this position includes a base salary, equity, and a variety of benefits. Actual base salaries will be based on candidate-specific factors, including experience, skillset, and location, and local minimum pay requirements as applicable.  We have noticed a rise in recruiting impersonations across the industry, where scammers attempt to access candidates' personal and financial information through fake interviews and offers. All Cresta recruiting email communications will always come from the @cresta.ai domain. Any outreach claiming to be from Cresta via other sources should be ignored.  If you are uncertain whether you have been contacted by an official Cresta employee, reach out to recruiting@cresta.ai