Software Engineer II

ProService Hawaii is hiring a Software Engineer II to build and operate an integrations marketplace connecting customers’ business systems with its HR platform. The role includes developing integrations, owning marketplace features and roadmap, partnering with customers and vendors, and maintaining integration reliability in production.

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 and 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 than the last
• 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

Requirements:

• You've shipped production-grade software in a SaaS or product-driven environment, and you've built third-party integrations that stay reliable
• experience with OAuth 2.0 token lifecycle, webhooks, pagination, data mapping, and vendor API versioning
• You're 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
• experience with partner certification programs or with AI/LLM APIs for data mapping
• Hawaii-based candidates are preferred
• candidates in Orange County