[Hiring] Software Development Engineer III @HighLevel

Role Description

We’re hiring a Software Development Engineer III (SDE III) who loves owning features end-to-end and can move seamlessly between backend architecture and frontend delivery.

What you’ll own (true full-stack impact):

• Join the Sub-Accounts team that powers the entire end-business layer — handling hierarchy, permissions, data isolation, reporting, and performance for over 2 million end businesses.
• Design and deliver new sub-account features from API to pixel-perfect UI.
• Build scalable microservices and event-driven workflows.
• Optimize performance, cost, and reliability across the entire stack.
• Harden security and access control at every layer.
• Reduce tech debt and improve observability (logs, metrics, tracing).
• Work directly with product and customers to ship experiences people love.
• Split your time roughly 50/50 backend ↔ frontend.

Qualifications

• Expert-level Node.js and deep hands-on experience with MongoDB (complex queries, aggregations, indexing, sharding).
• Strong production experience with Redis (caching, rate-limiting, pub/sub, distributed locks).
• Proven ability to build responsive, high-quality UIs with any modern framework (Vue.js is a big plus; React/Angular also perfectly fine).
• Real-world experience designing and running microservices on Kubernetes.
• Solid track record shipping scalable, reliable systems on any major cloud platform (GCP, AWS, or Azure).
• You write clean, modular, reusable code — on both backend and frontend.

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).
• 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.

Company Description

HighLevel is a cloud-based, all-in-one white-label marketing and sales platform that empowers marketing agencies, entrepreneurs, and businesses to elevate their digital presence and drive growth.

• Support a global and growing community of over 2 million businesses.
• Process over 15 billion API hits and handle more than 2.5 billion message events every day.
• Manage 470 terabytes of data distributed across five databases.
• Operate with a network of over 250 micro-services.
• Support over 1 million domain names.