About HighLevel:HighLevel is a cutting-edge, AI-driven white-label sales and marketing platform designed to empower agencies, entrepreneurs, and businesses in enhancing their digital footprint and achieving sustainable growth. Proudly serving a vibrant community of over 2 million businesses worldwide, we offer comprehensive tools that enable users to capture, nurture, and convert leads into loyal customers. As of mid-2025, HighLevel processes over 4 billion API requests and manages more than 2.5 billion messaging events daily, with a robust infrastructure comprising over 470 terabytes of data spread across five databases and supported by a network of over 250 microservices.Our PeopleWith a diverse team of over 1,500 members across 15+ countries, we thrive in a global, remote-first environment. We believe in building not just software, but a global community characterized by creativity, collaboration, and meaningful impact. Our culture fosters innovation, encourages the celebration of ideas, and prioritizes people, regardless of where they are located.Our ImpactAs of mid-2025, our platform facilitates over 1.5 billion messages, aids in generating over 200 million leads, and supports more than 20 million conversations for the diverse businesses we serve monthly. Behind these impressive metrics are real individuals driving their companies forward, connecting with customers, and making their impact felt - and we are privileged to play a role in that journey.Role Summary:We are seeking a Senior Full Stack Engineer to architect, build, and scale the backend systems and frontend interfaces that power the Threads & Composer experience within HighLevel Conversations. Your primary focus will be on backend and API design, optimizing data flows, and enhancing performance, while also taking full ownership of the Vue 3 UI layer. Your contributions will be vital in managing critical processes that handle billions of messages each month, ensuring they are reliable, high-throughput, and accurate at scale.Team & System Overview:The Conversations team drives multi-channel communication across SMS, Email, WhatsApp, and DMs, managing over 2 billion messages monthly. The Threads & Composer team is responsible for the inbox and composer interfaces, as well as the backend services that facilitate and archive these interactions. You will engage with Node.js microservices, Google Cloud Platform (GCP) infrastructure (including GKE, Pub/Sub, and Cloud Tasks), and utilize MongoDB/Firestore for data storage, ensuring every message is processed smoothly.
Dec 18, 2025