Senior SDE - Global Commerce & Payments Platform

HighLevel; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

HighLevel's Commerce & Payments team is building a global 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. You will work across backend Go services and frontend integration with Vue.js, delivering

Qualifications

• 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.

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

Skills

Software development

Distributed systems

Frontend integration

Debugging

Tools

Go

MongoDB

Firestore

Redis

Kafka

Pub/Sub

Kubernetes

GCP

Job description

HighLevel's Commerce & Payments team is building a global 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. You will work across backend Go services and frontend integration with Vue.js, delivering