Software Development Engineer III - Full Stack
Description For Software Development Engineer III - Full Stack
HighLevel is seeking a Senior Software Engineer to join their Expansion Products team, specifically the Membership Team, working on a product with 750K+ MAU. This role combines backend (Node.js, Nest.js/Express.js) and frontend (Vue.js) development, building systems that process large amounts of data and handle thousands of requests per minute. The company, with 1000+ employees across 15 countries, serves over 60K agencies and 500K businesses globally, processing 3 Billion+ API hits and 2 Billion+ message events monthly.
The position involves designing, optimizing, and scaling the platform while collaborating with cross-functional teams. You'll work on high-performance web applications, efficient backend services, and real-time event-driven architectures. The role requires expertise in database optimization, cloud infrastructure, and security implementation.
HighLevel offers a remote-friendly environment with headquarters in Dallas, Texas. They emphasize strong company culture, creativity, collaboration, and work-life balance. The company handles massive scale with 80 Terabytes of data across 5 Databases and 25M daily customer page views.
As a senior team member, you'll guide other developers, drive technical decisions, and contribute to the platform's architecture. The ideal candidate will combine technical expertise with strong communication skills and a product-driven mindset. This is an opportunity to work on impactful projects at scale while helping shape the future of marketing technology.
Responsibilities For Software Development Engineer III - Full Stack
- Design, develop, and maintain scalable, high-performance web applications with responsive UIs
- Build efficient backend services and APIs, ensuring reliability and performance in a distributed system
- Optimize frontend performance, accessibility, and UX consistency using the design system
- Develop real-time, event-driven architectures with messaging systems
- Improve database performance, caching, concurrency, and scaling strategies for high-traffic systems
- Maintain and enhance CI/CD pipelines, cloud infrastructure, and deployment strategies
- Implement security best practices for authentication, authorization, and data protection
- Automate quality checks, monitoring, and alerts to drive data-driven decision-making
- Deeply understand the product, customers, and competitors to improve user experience
- Ensure test coverage (unit, integration, end-to-end) for system stability
- Address technical debt, maintain code quality, and enforce best practices
- Collaborate with product managers, designers, and engineers to deliver impactful features
- Mentor and guide team members, fostering technical growth
Requirements For Software Development Engineer III - Full Stack
- 3+ years of experience in full-stack development with a focus on scale
- Proficiency in Vue.js, Node.js, Nest.js/Express.js
- Strong understanding of databases (MySQL, MongoDB, ElasticSearch) and caching strategies (Redis)
- Experience handling high-scale traffic, distributed systems, and concurrency challenges
- Familiarity with cloud platforms (AWS, GCP, or Azure)
- Experience with messaging systems (Kafka, RabbitMQ, Google Pub/Sub etc.) for event-driven architecture
- Proficiency in testing frameworks for frontend and backend (e.g., Jest, Mocha, Cypress)
- Strong debugging, performance optimization, and problem-solving skills
- Ability to work autonomously and collaborate effectively in a remote environment
- Strong communication skills and a product-driven mindset to balance trade-offs efficiently
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