Sr. SDE (Email)

About us HighLevel is an AI-powered business operating system that gives agencies, entrepreneurs and SMBs the infrastructure to build, automate and scale. Today, HighLevel supports SMBs across 150+ countries, fueling community-driven growth rooted in real customer outcomes. To date, businesses operating on HighLevel have generated over $7 billion in ecosystem value, demonstrating the impact of shared infrastructure at scale. By centralizing conversations, automation and intelligence into one system, we help businesses move faster, reduce complexity and execute efficiently. Behind the platform, HighLevel powers more than 4 billion API hits and 2.5 billion message events daily. With 250 terabytes of distributed data, 250+ microservices and over 1 million domain names supported, our architecture is built for performance, resilience and long-term scalability. Our people With over 2,000 team members across 10+ countries, HighLevel operates as a global, remote-first organization built for speed and ownership. We value initiative, clarity and execution, creating space for ambitious people to build systems that support millions of businesses worldwide. Here, innovation thrives, ideas are celebrated and people come first, no matter where they call home. Our impact Every month, HighLevel enables more than 1.5 billion messages, 200 million leads and 20 million conversations for the more than 1 million businesses we support. Behind those numbers are real people building independence, expanding opportunity and creating measurable impact. We’re proud to be a part of that. Learn more about us on our YouTube Channel or Blog Posts About the Team: The Email team owns the Email platform behind HighLevel's email experience, which powers 40M+ emails a day. We own the full path from compose to inbox, so the reliability, speed and quality of what we ship directly decide whether emails from over a million businesses land in the inbox. We are responsible for: Email Platform: The Vue.js apps used to design, compose and send emails, plus the Node.js/NestJS services behind them. Sending Infrastructure & Deliverability: IP pools, dedicated IPs, dedicated domains and shared domain pools. These let new users send from day one, while we stay accountable for getting their email into the inbox. API-First Platform: Every capability is exposed through APIs, so email can be built into any product or workflow that needs it. Scale & Reliability: Keeping throughput high at peak load, with high uptime and send success rates. Email Statistics & Analytics: Integrating email stats with internal teams and making every release measurable on our dashboards. AI in Email: Bringing LLM-powered capabilities into email creation, while weighing token cost, latency and quality Impact & Scale Email is one of the most critical channels on HighLevel. When it works, businesses grow; when it breaks, their customers stop hearing from them. That's the weight this role carries. Businesses: Every one of the 1M+ businesses on HighLevel relies on email to reach their customers. Sub-accounts: Your work runs across 1.6M+ sub-accounts, from solo operators to agencies managing hundreds of clients. End users: What you ship reaches end users through 1.2B+ emails every month. Volume: 40M+ emails a day flow through the systems you'll own, so a 1% gain in reliability or deliverability affects hundreds of thousands of emails daily. Blast radius: One change can affect every business on the platform at once, which is why we care so much about reliability, data integrity and security. How we work Iterate fast: Go from idea to prototype to production in days, not quarters. Ship small, measure, learn and improve. Use AI well: Use AI across the whole cycle (design, coding, testing, reviews and debugging) to move faster without lowering the quality bar, and pick the right model for each job based on quality, latency and cost. About the Role: The traditional model of siloed product managers, designers and engineers is too slow for AI-native development. At HighLevel, every engineer owns a product outcome end to end, from idea to prototype to production to scale. You will operate as a Team of One. With AI tooling and strong engineering infrastructure, one engineer can now build what used to take a whole squad. You won't be implementing tickets. You'll own the product. #LI-Remote #LI-RS1 EEO Statement: The company is an Equal Opportunity Employer. As an employer subject to affirmative action regulations, we invite you to voluntarily provide the following demographic information. This information is used solely for compliance with government recordkeeping, reporting, and other legal requirements. Providing this information is voluntary and refusal to do so will not affect your application status. This data will be kept separate from your application and will not be used in the hiring decision. We encourage you to review our Privacy Policy before submitting your application