Integrations Engineer - SaaS & AWS Serverless

ProService Hawaii; Los Angeles (CA); Hybrid; USD 110,000 - 137,000; Full time

Job summary

ProService Hawaii is hiring to own and grow the integrations marketplace that connects our customers’ business systems to the ProService HR platform. You’ll design, build, and operate integrations with platforms like Toast, QuickBooks Online, and NetSuite using OAuth 2.0, webhooks, and polling.

You’ll work end-to-end on the catalog, health, and flows; architect serverless AWS patterns with Python, TypeScript, and React/Next.js, and collaborate with customers and vendor programs for sandbox

Qualifications

• You’ve shipped production-grade software in a SaaS or product-driven environment.
• You’ve built third-party integrations that stay reliable, with data mapping.
• Proficiency with OAuth 2.0 token lifecycle, webhooks, pagination, data mapping, and vendor API versioning.
• Fluent in AWS serverless, Python, TypeScript, React/Next.js, and Git-based Agile workflows.
• Accounting, POS, time and labor, or payroll familiarity is a strong plus.

Responsibilities

• Design, build, and launch integrations with platforms like Toast, QuickBooks Online, and NetSuite using OAuth 2.0, webhooks, and polling.
• Own the integrations marketplace end to end, including the catalog, connect/disconnect flows, connection health, and a roadmap prioritized with Product.
• Architect reusable serverless patterns on AWS (Lambda, EventBridge, SQS, DynamoDB) in Python, TypeScript, and React/Next.js so each integration ships faster.
• Partner directly with customers on bespoke integrations with ProService APIs, and with vendor developer programs on sandbox access, certification, and API changes.
• Build monitoring and alerting that catches sync failures before customers notice.
• Uphold code quality through testing, code reviews, and CI/CD, and support production reliability through on-call rotations.

Skills

OAuth 2.0

Webhooks

Data mapping

Vendor API versioning

AWS serverless

Python

TypeScript

React/Next.js

Git-based Agile workflows

Accounting/Payroll familiarity

Tools

AWS

Git

OAuth tooling

REST APIs

Job description

ProService Hawaii is hiring to own and grow the integrations marketplace that connects our customers’ business systems to the ProService HR platform. You’ll design, build, and operate integrations with platforms like Toast, QuickBooks Online, and NetSuite using OAuth 2.0, webhooks, and polling.

You’ll work end-to-end on the catalog, health, and flows; architect serverless AWS patterns with Python, TypeScript, and React/Next.js, and collaborate with customers and vendor programs for sandbox