Software Development Engineer III - Full Stack Development (Platform Experience)

Responsibilities

• Design and build highly reliable, scalable systems to ensure mission-critical applications maintain near 100% uptime.
• Proactively identify, debug, and eliminate performance bottlenecks and production issues.
• Drive incident prevention through root cause analysis and systemic fixes.
• Own end-to-end feature delivery from design to production.
• Establish and enforce high coding standards, review practices, and clean architecture principles.
• Practice and promote Test-Driven Development (TDD).
• Collaborate with product and data teams to measure, analyze, and optimize conversion funnels.
• Contribute to long-term technical vision and architectural decisions.
• Drive cross-team collaboration to improve platform-wide engineering standards.
• Identify opportunities to implement AI-driven bots, intelligent workflows, and automation systems to improve customer productivity and internal efficiency.
• Integrate AI capabilities within Onboarding, Launchpad, and Global Search to enhance user experience and personalization.

Requirements

• 5+ years of full-stack engineering experience with significant backend/system design exposure.
• Deep expertise in distributed systems and event-driven architecture.
• Strong experience with asynchronous job processing and background workers.
• Solid understanding of both relational and NoSQL databases (MongoDB, ClickHouse preferred).
• Strong experience with modern frontend frameworks (Vue.js, React, or Angular).
• Ability to design and optimize interactive dashboards and data-heavy UIs.
• Excellent understanding of software design patterns, API design, and microservices.
• Hands-on experience with CI/CD pipelines, TDD, and automated testing frameworks.
• Strong performance tuning, profiling, and optimization skills (especially Node.js).
• Experience with caching, rate limiting, and queuing systems.
• Strong knowledge of Elasticsearch for search, indexing, and analytics.
• Experience using Redis for caching, session storage, or background queues.
• Strong communication skills with the ability to work cross-functionally.
• Ability to make clear architectural trade-offs and guide team decision-making.

Bonus Skills

• Contributions to open-source tools, internal platforms or engineering blogs.
• Exposure to AI-driven content tools or automation systems.

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.