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 15 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 domain names.
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:
This role leads the evolution of our massive real-time messaging platform, powering billions of messages across SMS, Email, WhatsApp, and more. You’ll improve core delivery, retry, and storage systems across Node.js, Firestore, Mongo, and ClickHouse, while shaping backend architecture and patterns. Operating at large scale — 50+ workloads, thousands of pods, and event-driven pipelines — you’ll make our infrastructure easier to operate, safer to change, and built to scale.
Requirements:
7+ years in backend engineering; proven experience scaling systems with massive throughput
Deep expertise in databases: Firestore, MongoDB, ElasticSearch, ClickHouse
Hands-on experience with Kubernetes, GCP (or AWS), and event-driven infra
Clear understanding of distributed systems principles: CAP tradeoffs, consistency, rate limiting, retries, idempotency
Strong API and system boundary design in micro-services ecosystems
Crisp communication — technical leadership without posturing
Responsibilities:
You write clean, observable, and testable backend code
Architect and scale backend systems for message ingestion, delivery, storage, and retries
Lead re-architecture efforts to improve reliability, latency, and observability
Drive infra decisions across GCP, Kubernetes, Pub/Sub, Cloud Tasks, and custom queueing models
Own core services: delivery guarantees, message deduplication, state transitions, retry semantics
Partner with platform and SRE teams to ensure autoscaling, fault tolerance, and production readiness
Guide API boundaries, system interactions, and contracts across services
Mentor engineers in distributed systems, data models, and real-world scale
Own incidents, root cause, recovery, and prevention — not just alerts
EEO Statement:
At HighLevel, we value diversity. In fact, we understand it makes our organisation stronger. We are committed to inclusive hiring/promotion practices that evaluate skill sets, abilities, and qualifications without regard to any characteristic unrelated to performing the job at the highest level. Our objective is to foster an environment where really talented employees from all walks of life can be their true and whole selves, cherished and welcomed for their differences while providing excellent service to our clients and learning from one another along the way! Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.
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