Software Development Engineer III - Core CRM

HighLevel; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

HighLevel is a remote-first AI-powered business operating system used by agencies, entrepreneurs, and SMBs to build, automate, and scale. You will own systems end-to-end, focus on performance and reliability, and contribute to both backend services and frontend integration with Vue 3.

The role emphasizes scalable Node.js/TypeScript microservices, API design, data modeling with MongoDB/Firestore, and observability in a fast-moving, owner-driven team.

Qualifications

• 4+ years of professional engineering experience.
• Backend-heavy fullstack with Node.js/TypeScript.
• Experience scaling microservices (NestJS/Express) and cloud native (GCP/AWS).
• Proficient in API design and data modeling; production debugging.

Responsibilities

• Design and evolve Node.js/NestJS services powering scalable systems.
• Build well-typed REST contracts for high volume flows.
• Model MongoDB/Firestore schemas for high read/write workloads.
• Implement queues, caching, and rate limiting for burst traffic.
• Ship Vue 3 UIs consuming APIs and improve Core Web Vitals.
• Instrument logs, metrics, traces, and alerts; participate in on-call.

Skills

Node.js

TypeScript

API design

Data modeling

Distributed systems

Concurrency control

Cloud (GCP/AWS)

CI/CD

Containerization

Production debugging

Vue 3

Tools

NestJS

Express

Vue.js

MongoDB

Firestore

Job description

Headquarters: India URL: http://gohighlevel.com

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.