Software Development Engineer III - Custom Objects (Backend)
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AI Summary
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 peopleWith 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 impactEvery 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
The Contacts Team is central to our CRM platform, powering contact records, segmentation, filters, and views used across all product surfaces. As a Frontend Developer, you will focus on building high-performance, scalable, and intuitive user interfaces that handle large datasets and complex workflows. You will work closely with backend, product, and design teams to deliver seamless user experiences at scale.
\nBackend System Ownership
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Design and evolve Node.js / NestJS services powering systems that operate at scale
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Take architectural decisions that balance scale, cost, and long-term maintainability
API Craftsmanship
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Build well-typed, thoughtful REST contracts for high volume flows
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Think in versioning, backward compatibility, and clean boundaries
Data at Scale
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Model and optimize MongoDB / Firestore schemas for high read/write workloads
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Design atomic updates and consistency strategies for distributed systems
Scalability & Resilience
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Implement queues, caching layers, and rate limiting to handle burst traffic gracefully
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Design for failure modes before they happen
Frontend Integration
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Ship modular Vue 3 UIs that efficiently consume APIs
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Optimize realtime updates and state management (Pinia)
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Improve Core Web Vitals and perceived performance
Observability & Production Ownership
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Instrument logs, metrics, traces, and alerts
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Participate in on-call
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Debug real production issues
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Drive post-mortems to meaningful closure (not just documents)
Mentorship & Leverage
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Review code thoughtfully
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Support junior engineers
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Raise engineering standards across the team
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4+ years of professional engineering experience
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Strong backend-heavy fullstack background
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Deep comfort with Node.js + TypeScript
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Experience building and scaling microservices (NestJS / Express)
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Modern frontend experience (Vue 3 or similar)
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Strong understanding of:
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API design
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Data modeling
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Distributed systems tradeoffs
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Concurrency & rate limiting
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Real production debugging experience
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Comfortable in cloud-native environments (GCP / AWS)
CI/CD and containerization familiarity
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Pub/Sub or message queue experience
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Event-driven systems exposure
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Domain-driven design familiarity
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Performance optimization work
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Experience reducing infra costs
Frontend: Vue 3, Pinia, Vite / Webpack, Tailwind
Storage: MongoDB, Firestore, Redis, ElasticSearch
Infra: GCP (GKE, Pub/Sub, Cloud Tasks)
CI/CD: GitHub Actions, Docker, Kubernetes
Testing: Jest, Vitest
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Ownership of real systems
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Complex problems worth solving
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Exposure to scale
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High engineering bar
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A team that values thoughtful design over rushed patches
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