Lead Engineer - LC Phone
Job Description
HighLevel is seeking a Staff Software Engineer to join their LC Phone Team, which is at the heart of their communication platform handling SMS, MMS, Voice Calls, WhatsApp, and RCS messaging. The platform processes over 15 billion API hits and 2.5 billion message events daily, managing 470+ terabytes of data across five databases with 250+ microservices.
As a Staff Engineer, you'll be responsible for leading the technical direction of a platform that handles 100M+ daily events across 15+ services. You'll work with cutting-edge technologies including NestJS, Firestore, MongoDB, PostgreSQL, and Redis, while mentoring 10+ engineers across 5 different product squads. The role combines hands-on technical leadership with strategic architectural planning.
The company operates in a global, remote-first environment with over 1,500 team members across 15+ countries. They serve more than 2 million businesses, processing over 1.5 billion messages and generating 200 million leads monthly. This position offers the opportunity to make a significant impact on a rapidly scaling platform while working with modern technologies and AI/LLM implementations.
The ideal candidate will bring strong expertise in distributed systems, proven experience with high-scale platforms, and the ability to balance technical excellence with practical execution. This role offers the chance to shape the future of a critical communication infrastructure while working with a global team in a remote-first culture focused on innovation and impact.
Responsibilities For Lead Engineer - LC Phone
- Lead architecture and scaling decisions for key Phone platform components
- Lead design and execution of cross-cutting initiatives to improve reliability, latency, and throughput
- Work hands-on with technologies like NestJS, Firestore, MongoDB, PostgreSQL, Redis, Queuing Systems
- Drive observability and resilience by evolving monitoring, alerting, and incident response strategies
- Leverage LLMs and AI tools to write, refactor, test, and debug code efficiently
- Partner with product, infra, and security teams to ensure data integrity
- Mentor and guide a team of high-performing engineers
- Stay on the bleeding edge of AI/LLM technology and development best practices
- Participate in design reviews, deep dives, and on-call rotations
Requirements For Lead Engineer - LC Phone
- 6+ years of backend engineering experience
- Deep expertise in distributed systems, event-driven architectures
- Proven experience optimizing availability, performance, and reliability
- Strong experience with relational and NoSQL data models
- Deep knowledge of Frontend Systems with any frameworks (Angular, VueJS, React)
- Familiarity with monitoring, SLOs, and root-cause analysis
- Familiarity with hallucination mitigation strategies
- Excellent communication and cross-functional collaboration skills
- A pragmatic, hands-on leader who balances long-term vision with iterative execution
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