Senior Software Development Engineer (Agency Success)

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. 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. 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. We're looking for a Senior Software Development Engineer (Full Stack) to join our Agency Module, Platform Billing, and Onboarding team. These products form a critical part of HighLevel's Agency ecosystem, enabling agencies to seamlessly create and manage their accounts, onboard onto the platform, manage subscriptions and billing, and scale their businesses. Today, 100K+ agencies use HighLevel, collectively serving 2M+ businesses of all sizes, primarily SMBs. The systems we build support critical parts of the agency lifecycle and directly contribute to agency growth by making onboarding, account management, and billing experiences reliable and seamless. The team builds and scales key capabilities across Agency Signup and Company Management, Platform Billing, and Agency Onboarding. Our onboarding experiences help new agencies get started with HighLevel, configure their accounts, discover and adopt key platform capabilities, and move from signup to successfully using the platform. Together, these systems provide the foundation for agencies to onboard, operate, and grow their businesses on HighLevel. As an Sr. SDE, you'll play a key role in building and evolving these systems across the frontend and backend, while contributing to technical architecture and engineering decisions. You'll work on challenges involving scalable APIs and services, distributed systems, data architecture and modern frontend experiences — with a strong focus on reliability, scalability, and performance. You'll collaborate closely with Product Managers, Designers, and other Engineers to take features from requirements and technical planning through implementation and production, while contributing to technical decisions and continuously improving the systems you own.