Software Development Engineer II - Commerce

About the Role:

We’re building a global commerce platform to power $1T+ in annual transactions for millions of SMEs. As an SDE III, you’ll design core models—subscriptions, payments, reconciliation, and tax—plus the services around them. You’ll define event contracts, data policies, and consistency guarantees to ensure every transaction is correct by design, traceable, and delightful at scale.

Responsibilities:

• Design and ship multi-tenant services: checkout, subscriptions, payments orchestration, invoicing, tax hooks
• Integrate PSPs and local methods (UPI, wallets, BNPL, cards/3DS) with resilient webhooks and idempotent APIs
• Implement an append-only double-entry ledger; apply event sourcing/CQRS where it improves scale and correctness
• Write production-grade code with deep test coverage and OpenTelemetry instrumentation
• Operate on GKE with CI/CD, autoscaling, SLIs/SLOs, and on-call ownership
• Collaborate with PM/Design and mentor junior engineers

Requirements:

• 2+ years in software development
• Experience with MongoDB/Firestore, Redis, and event-driven systems (Kafka, Pub/Sub)
• Strong distributed systems fundamentals: idempotency, retries, ordering, concurrency, and consistency
• Hands-on experience with Kubernetes and GCP; familiarity with secrets/KMS and PCI basics
• Deep testing discipline: unit, integration, contract, and performance testing
• Schema design for scale and backward compatibility
• Excellent debugging and problem-solving skills
• Ability to build responsive, accessible, and performant UIs that integrate cleanly with backend APIs
• Familiarity with component-driven design, state management, and modern frontend tooling (Vite, ESLint, etc.)

Tech Stack:

• Backend: Go, ConnectRPC, Buf
• Frontend: Vue.js, Vite, Webpack MFA, TanStack Query
• Databases: MongoDB, Firestore, Clickhouse
• Cloud: GCP (GKE), Pub/Sub, Redis, OpenTelemetry

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.

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.