Software Development Engineer III - Core CRM at HighLevel – Anywhere in the World | Jobyssey

Headquarters: India
URL:

About HighLevel:
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.
Learn more about us on our YouTube Channel or Blog Posts

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)
CI/CD and containerization familiarity

Nice to Have:

Pub/Sub or message queue experience
Event-driven systems exposure
Domain-driven design familiarity
Performance optimization work
Experience reducing infra costs

#LI-Remote #LI-NJ1

EEO Statement:

The company is an Equal Opportunity Employer. As an employer subject to affirmative action regulations, we invite you to voluntarily provide the following demographic information. This information is used solely for compliance with government recordkeeping, reporting, and other legal requirements. Providing this information is voluntary and refusal to do so will not affect your application status. This data will be kept separate from your application and will not be used in the hiring decision.

We encourage you to review our before submitting your application

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

To apply:

Software Development Engineer III - Core CRM

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