Software Development Engineer II (Full Stack) - Agency Module, Platform Billing, and Onboarding

About the Role

We’re looking for a Software Development Engineer II (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 SDE-2, you’ll work across the frontend and backend, building and delivering features across these systems. You’ll work on scalable APIs and services, data-driven workflows, integrations, and modern frontend experiences while developing a strong understanding of the products and systems you work on.

You’ll collaborate closely with Product Managers, Designers, and other Engineers to take features from requirements through implementation and production, contribute to technical discussions, and continuously improve the quality and reliability of the systems you work on.

Responsibilities

• Build and deliver features across the Agency Module, Agency Onboarding, and Platform Billing, contributing across both backend and frontend systems.

• Design and build scalable backend services, APIs, and integrations, working across internal microservices and third-party platforms such as Stripe, with a focus on reliability, security, and performance.

• Build performant and scalable frontend experiences for agency management, onboarding, and billing workflows using modern frontend frameworks and component-driven architecture with strong state management practices.

• Own features end-to-end, from understanding requirements and technical planning through implementation, testing, deployment, and production support.

• Leverage AI-first coding practices and AI tools (such as LLMs, Cursor, Claude Code, etc.) to write, refactor, test, and debug code efficiently, while maintaining strict guardrails for reliability and security.

• Design data models and build efficient queries across data stores such as MongoDB, ClickHouse, and Elasticsearch.

• Participate across the full Software Development Life Cycle (SDLC), from requirement analysis and implementation to deployment, monitoring, and production support.

• Write clean, efficient, secure, and testable code with appropriate unit and integration test coverage.

• Use logs, metrics, monitoring, and tracing to troubleshoot production issues and contribute to improving system reliability.

• Participate in code reviews, technical discussions, incident resolution, and operational support, including on-call responsibilities where applicable.

• Follow engineering best practices around security, scalability, maintainability, testing, documentation, and production readiness.

Requirements

• 2+ years of software engineering experience building and shipping production-grade full-stack applications.

• Strong hands-on experience with Node.js and TypeScript for backend development, including APIs and service integrations; NestJS experience is preferred.

• Strong frontend development experience with Vue.js, React, or Angular, with Vue.js preferred, and a good understanding of component-based development and state management.

• Experience building and consuming REST APIs and working with microservices and service-to-service integrations.

• Hands-on experience with MongoDB or similar databases, including data modeling, querying, and performance considerations.

• Experience with asynchronous and event-driven application patterns, using technologies such as GCP Pub/Sub, Kafka, RabbitMQ, or similar.

• Ability to debug and troubleshoot production issues across frontend, backend, databases, and integrations using logs and monitoring tools.

• Good understanding of software engineering practices including automated testing, code reviews, Git, CI/CD, and production deployment.

• Familiarity with AI-assisted development tools and the ability to use them effectively as part of day-to-day engineering workflows.

• Strong problem-solving, ownership, and collaboration skills, with the ability to independently take a feature from requirement understanding through implementation and production.

Preferred Experience

• Experience with AI tools and contributions to open-source projects, internal platforms, or engineering blogs.

• Experience with modern front-end frameworks (e.g., React, Vue, Angular) and building full-stack web applications.

• Familiarity with cloud-native development, specifically within the Google Cloud Platform (GCP) ecosystem.