Software Development Engineer III - Location

HighLevel is a cloud-based marketing and sales platform that empowers businesses to enhance their digital presence. The Software Development Engineer III will take ownership of features end-to-end, working on both backend architecture and frontend delivery to ensure a seamless experience for users.

Responsibilities:

• Own feature delivery from concept to production for the Sub-Accounts platform — design APIs, implement backend logic, and build clean, responsive frontend experiences (any modern UI framework; Vue.js experience is a big plus)
• Build and evolve highly scalable, performant microservices using Node.js, MongoDB, Redis, and event-driven patterns running on Kubernetes and GCP
• Proactively hunt down and fix systemic issues (race conditions, deadlocks, memory leaks, timeouts, data inconsistencies) across the sub-accounts hierarchy and permissions system
• Drive performance and cost optimizations — query tuning, intelligent caching, indexing strategies, and GCP cost reduction without sacrificing speed or reliability
• Ruthlessly reduce technical debt through refactoring, improving test coverage, and eliminating anti-patterns in both backend and frontend code
• Strengthen security at every layer — RBAC/ABAC enforcement, tenant isolation, audit trails, rate limiting, secrets management, and input validation
• Improve observability across the stack — meaningful logs, metrics, distributed tracing, and alerts that make incidents easy to debug in real time
• Work hand-in-hand with QA from day one: review test cases, give live demos during QA handover, and resolve feedback quickly
• Build internal tools, scripts, and automation that accelerate development, testing, and deployment cycles for the entire team
• Actively pair with teammates, share knowledge, conduct code reviews, and help unblock others
• Participate in on-call rotation and own incident resolution for the sub-accounts services you build
• This is a hands-on individual contributor role where you’ll write production code daily, ship complete features fast, and directly shape how thousands of agencies and resellers experience our platform
• If you love end-to-end ownership and want to make multi-account management feel effortless and bulletproof — this is your role

Requirements:

• 4–7 years of hands-on engineering experience with proven exposure to scale (high TPS, large datasets, or complex multi-tenant/multi-account systems)
• Expert-level Node.js and a strong habit of writing clean, modular, reusable code
• Deep expertise with MongoDB (complex schemas, aggregation framework, indexing, sharding, change streams)
• Solid production experience with Redis (caching, rate-limiting, pub/sub, distributed locks, session management)
• Real-world experience building and operating microservices on Kubernetes (deployments, services, configmaps, helm, basic troubleshooting)
• Strong hands-on experience with any major cloud provider (GCP, AWS, or Azure) – you know how to use managed services for containers, queues, caches, serverless, and databases effectively
• Comfortable building responsive, high-quality UIs with any modern frontend framework (Vue.js is a big plus; React or Angular experience works perfectly too)
• You've shipped and supported large-scale, mission-critical systems that stayed stable under heavy load
• You're passionate about modular architecture, obsess over performance and GCP cost optimization, and can seamlessly jump into the frontend to deliver complete, polished features
• Experience with AI Tools and contributions to open-source tools, internal platforms or engineering blogs
• NestJS or Express.js experience
• Elasticsearch for advanced search/filtering use cases