Full Stack Engineer - Persana AI

Full Stack Engineer - Persana AI About Persana Persana AI (YC W23) is revolutionizing how companies execute their go-to-market strategies with our innovative GTM agents. Our proprietary AI technology analyzes billions of data points across professionals, companies, and market signals to help sales teams identify high-probability prospects, engage the right decision-makers, and create personalized outreach that gets responses. Companies using our platform see 3-5x higher conversion rates while their sales teams spend 70% less time on prospecting. The Opportunity As we scale our platform and expand our AI agent capabilities, we're looking for a talented Full Stack Engineer to join our founding engineering team. This is a unique opportunity to work on cutting-edge AI applications in a high-growth environment where your contributions will directly impact our product and business trajectory. What You'll Build Advanced interfaces for our GTM agents that make complex AI capabilities intuitive for sales professionals Scalable backend systems that process and analyze massive datasets to power our recommendation engines Real-time monitoring and feedback systems to continuously improve agent performance Integration layers that connect our platform with CRMs, sales engagement tools, and other customer systems New agent capabilities across our core embedding search technology (PersanaVector™) Your Impact Shape the architecture and technical direction of a fast-growing AI startup Build features that directly improve the effectiveness of sales teams at our customer companies Work closely with our AI/ML team to bring cutting-edge language and embedding models into production Contribute to a product that's changing how businesses discover and connect with each other What We're Looking For 3+ years of experience building production web applications Strong proficiency in modern JavaScript/TypeScript and React Experience with backend technologies like Node.js, Python, or similar Familiarity with database design, SQL, and NoSQL solutions Strong computer science fundamentals and problem-solving skills Experience with cloud services (AWS, GCP, or Azure) Interest in AI/ML applications and data-intensive applications Bonus Points For Experience building applications that integrate with LLMs or other AI models Knowledge of sales tech, CRMs, or B2B prospecting workflows Background in search, recommendation systems, or information retrieval Experience at fast-growing startups or YC companies Contributions to open source projects Why Persana? Work with a founding team that combines domain expertise from LinkedIn, Shopify, and Element AI Solve challenging technical problems at the intersection of AI, search, and B2B sales Join at an inflection point - we're well-funded and scaling rapidly Competitive compensation Flexible work environment with the resources you need to do your best work Our Stack Frontend: React, TypeScript, TailwindCSS Backend: Node.js, Python, BullMQ for job queueing Database: PostgreSQL, MongoDB, OpenSearch AI/ML: PyTorch, Hugging Face, proprietary embedding models Infrastructure: AWS (Lambda, S3, ECS, CloudFront), Docker, Kubernetes Location San Francisco Bay Area in person Persana is an equal opportunity employer committed to building a diverse and inclusive team. We encourage candidates from all backgrounds to apply.