Lead Engineer - Email Builder at gohighlevel

About HighLevel HighLevel is an AI powered, all-in-one white-label sales & marketing platform that empowers agencies, entrepreneurs, and businesses to elevate their digital presence and drive growth. We are proud to support a global and growing community of over 2 million businesses, comprised of agencies, consultants, and businesses of all sizes and industries. HighLevel empowers users  with all the tools needed to capture, nurture, and close new leads into repeat customers. As of mid 2025, HighLevel processes over 4 billion API hits and handles more than 2.5 billion message events every day. Our platform manages over 470 terabytes of data distributed across five databases, operates with a network of over 250 microservices, and supports over 1 million hostnames. Our People With over 1,500 team members across 15+ countries, we operate in a global, remote-first environment. We are building more than software; we are building a global community rooted in creativity, collaboration, and impact. We take pride in cultivating a culture where innovation thrives, ideas are celebrated, and people come first, no matter where they call home. Our Impact As of mid 2025, our platform powers over 1.5 billion messages, helps generate over 200 million leads, and facilitates over 20 million conversations for the more than 2 million businesses we serve each month. Behind those numbers are real people growing their companies, connecting with customers, and making their mark - and we get to help make that happen. Learn more about us on our YouTube Channel or Blog Posts About the Role We’re looking for an Email Builder Full Stack Tech Lead to own and scale one of our most critical customer-facing platforms. This role sits at the intersection of product, design, and engineering, leading the architecture and evolution of a highly scalable Email Template Builder that powers tens of millions of emails every day. You’ll guide technical direction, mentor engineers, and build resilient, high-performance systems that help customers create beautiful, on-brand email experiences with confidence. Responsibilities • Lead the design, architecture, and delivery of core Email Builder sub-modules from concept to production. • Build and scale a highly reliable Email Template Builder platform supporting ~30 million emails per day. • Own sprint planning, estimation, prioritization, and execution for assigned modules. • Drive system scalability, performance, security, and reliability using sound architectural principles and modern development practices. • Provide technical leadership through high-quality code reviews, mentoring, and hands-on guidance for engineers. • Collaborate closely with Product, Design, QA, DevOps, and other engineering teams to deliver cohesive solutions. • Act as the primary point of contact for owned modules, coordinating design discussions, releases, and post-launch improvements. • Design and maintain reusable, themeable, and extensible UI components for email and template workflows. • Scale and optimize shared sub-modules such as countdown timers, Brand Board, and cross-platform branding tools. • Monitor production systems, troubleshoot complex cloud-hosted issues, and lead root-cause analysis and remediation. • Drive data-backed engineering decisions by defining metrics, dashboards, and feature attribution. • Take end-to-end ownership of features post-release, including monitoring, debugging, and iterative enhancements to improve user experience. • Continuously identify bottlenecks and propose long-term, scalable improvements across frontend and backend systems. Requirements • 6+ years of experience in a full-stack engineering role, with demonstrated technical leadership or tech lead experience. • Strong proficiency in JavaScript, TypeScript, Node.js, Vue.js, and NestJS. • Solid experience building and scaling high-traffic, customer-facing web applications. • Deep understanding of system design, scalable architectures, and design patterns. • Experience designing, building, and maintaining distributed systems with high availability and reliability. • Hands-on experience with MongoDB, including schema design and query optimization; familiarity with Firestore and ClickHouse is a plus. • Practical experience with caching, performance optimization, and latency reduction using tools such as Redis and CDN strategies. • Experience working with message queues and event-driven systems (Pub/Sub, Kafka, RabbitMQ, or equivalents). • Strong frontend fundamentals, including HTML5, CSS3, component architecture, and frontend performance optimization. • Experience troubleshooting and debugging complex cloud-hosted environments using logs, metrics, and monitoring tools. • Familiarity with observability and monitoring tools such as Grafana, Sentry, or similar platforms. • Ability to collaborate effectively in a remote, cross-functional environment with Product, Design, QA, and DevOps teams. • Strong communication skills with the ability to articulate technical decisions and trade-offs clearly. • Product-minded engineer with a keen eye for UX, design systems, and user flows. • Ownership mindset with the ability to take features end-to-end, from design through post-release maintenance. • Comfortable working as a generalist across frontend, backend, and supporting systems to solve complex problems. • Empathy for users and teammates, with a passion for building high-quality, delightful experiences. • ••Nice-to-have: Experience with email rendering standards, MJML, email client quirks, and AI/LLM integrations. Preferred Experience • Experience with AI Tools and contributions to open-source tools, internal platforms or engineering blogs EEO Statement: At HighLevel, we value diversity. In fact, we understand it makes our organisation stronger. We are committed to inclusive hiring/promotion practices that evaluate skill sets, abilities, and qualifications without regard to any characteristic unrelated to performing the job at the highest level. Our objective is to foster an environment where really talented employees from all walks of life can be their true and whole selves, cherished and welcomed for their differences while providing excellent service to our clients and learning from one another along the way! Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions. #LI-Remote #LI-RS1