Software Development Engineer II – Backend
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Job Description
Backend engineer building scalable Node.js and TypeScript services for HighLevel’s AI-powered business operating system. Optimizing APIs, databases, and distributed systems at internet scale.
Responsibilities:
- Design, develop, test, and maintain scalable backend services using Node.js and TypeScript
- Build and maintain REST APIs consumed by multiple HighLevel products and services
- Write clean, maintainable, testable, and production-quality code
- Work with high-volume datasets and optimize database queries and data-access patterns
- Develop asynchronous processing flows using queues and event-driven architecture
- Identify API and database performance bottlenecks
- Work with caching, indexing, batching, and asynchronous processing patterns
- Improve service latency, throughput, and scalability
- Monitor production services and investigate failures using logs, metrics, traces, and observability platforms
- Debug and resolve production issues
- Participate in on-call and incident-resolution processes
- Contribute to root-cause analysis and sustainable fixes
- Write unit and integration tests for new functionality
- Participate in code reviews
- Follow secure coding and engineering best practices
- Improve existing code through refactoring and technical-debt reduction
Requirements:
- 3+ years of backend development experience
- Strong hands-on experience with Node.js and TypeScript/JavaScript
- Experience designing and consuming REST APIs
- Good understanding of microservices
- Experience with relational and/or NoSQL databases
- Understanding of database indexing and query optimization
- Familiarity with asynchronous processing and message queues
- Experience with Git, CI/CD and automated testing
- Familiarity with Docker
- Exposure to AWS/GCP or another major cloud platform
- Strong debugging and problem-solving skills
- Ability to independently design, develop, test, and deploy scalable backend solutions
- Ability to work effectively across engineering, product, and infrastructure teams
Benefits:
- Build products used by millions of businesses worldwide
- Work with modern technologies in a highly distributed architecture
- Remote-first engineering organization
- Continuous learning opportunities
- Opportunity to build systems handling billions of API requests and message events every day
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