HighLevel is an AI powered, all-in-one white-label sales & marketing platform that empowers agencies, entrepreneurs, and businesses to elevate their digital presence and drive growth. We are proud to support a global and growing community of over 2 million businesses, comprised of agencies, consultants, and businesses of all sizes and industries. HighLevel empowers users with all the tools needed to capture, nurture, and close new leads into repeat customers. As of mid 2025, HighLevel processes over 4 billion API hits and handles more than 2.5 billion message events every day. Our platform manages over 470 terabytes of data distributed across five databases, operates with a network of over 250 microservices, and supports over 1 million hostnames.
Our People
With over 1,500 team members across 15+ countries, we operate in a global, remote-first environment. We are building more than software; we are building a global community rooted in creativity, collaboration, and impact. We take pride in cultivating a culture where innovation thrives, ideas are celebrated, and people come first, no matter where they call home.
Our Impact
As of mid 2025, our platform powers over 1.5 billion messages, helps generate over 200 million leads, and facilitates over 20 million conversations for the more than 2 million businesses we serve each month. Behind those numbers are real people growing their companies, connecting with customers, and making their mark - and we get to help make that happen.
About the Role:
We are building systems that operate at scale - high write volumes, real-time state sync, and burst traffic that doesn’t politely warn before it arrives. We are looking for engineers who love owning systems end-to-end, care deeply about performance and reliability, and want to build things that don’t just work - but last. This is not a ticket-execution role, its a system ownership role.
Responsibilities:
Backend System Ownership:
Design and evolve Node.js / NestJS services powering systems that operate at scale
Take architectural decisions that balance scale, cost, and long-term maintainability
API Craftsmanship:
Build well-typed, thoughtful REST contracts for high volume flows
Think in versioning, backward compatibility, and clean boundaries
Data at Scale:
Model and optimize MongoDB / Firestore schemas for high read/write workloads
Design atomic updates and consistency strategies for distributed systems
Scalability & Resilience:
Implement queues, caching layers, and rate limiting to handle burst traffic gracefully
Design for failure modes before they happen
Frontend Integration:
Ship modular Vue 3 UIs that efficiently consume APIs
Optimize realtime updates and state management (Pinia)
Improve Core Web Vitals and perceived performance
Observability & Production Ownership:
Instrument logs, metrics, traces, and alerts
Participate in on-call
Debug real production issues
Drive post-mortems to meaningful closure (not just documents)
Mentorship & Leverage:
Review code thoughtfully
Support junior engineers
Raise engineering standards across the team
Requirements:
4+ years of professional engineering experience
Strong backend-heavy fullstack background
Deep comfort with Node.js + TypeScript
Experience building and scaling microservices (NestJS / Express)
Modern frontend experience (Vue 3 or similar)
Strong understanding of: API design, Data modeling, Distributed systems tradeoffs, Concurrency & rate limiting
Real production debugging experience
Comfortable in cloud-native environments (GCP / AWS)