Software Engineer II

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

Career Opportunities with ProService Hawaii

Rated One Of Hawaii's Best Places To Work for 18 Years

Share this with your network or join our talent commnunity!

At ProService Hawaii, we're not just another company-we're a tribe of passionate people committed to empowering employers and their employees across Hawaii. People are at the heart of everything we do. We know that running a business in Hawaii comes with challenges-from regulatory complexity to high costs. That's why we're dedicated to supporting both our clients and our team, fueling the \"Why\" behind everything we do.

We're the largest local HR partner trusted by over 3,000 employers and 50,000 employees, providing expert HR consulting, training, benefits, payroll, risk support, and more. We help organizations effectively hire, manage, and grow their teams with confidence. Headquartered in Hawaii with offices on Oahu, Maui, Kauai, and the Big Island, we've been voted Best Place to Work for over 18 years. Join our diverse and resilient team, and together, we'll make an impact.

At ProService, we exist to empower employers to succeed in Hawai?i. More than 3,000 local businesses rely on us for payroll, HR, and benefits, and many run their day on tools like Toast, QuickBooks Online, and NetSuite. When those systems talk cleanly to ours, a restaurant owner closes payroll without re-keying hours. When they don’t, a small business loses time it doesn’t have.

This role owns that connection. You’ll build and run the integrations marketplace that links our customers’ business systems to our HR platform, blending strong engineering with real product ownership. Success looks like customers connecting in minutes, data that stays accurate without manual work, and problems fixed before anyone has to report them.

IN THIS ROLE YOU WILL

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

IS THIS ROLE RIGHT FOR YOU?

This is an ownership role, not a ticket queue. You’ll ship at least one production-ready integration per quarter and keep owning it after launch, including joining the on-call rotation to resolve critical issues within hours. You’ll also talk directly with customers and partners to shape what gets built next. These expectations are not optional — they’re the job. You’ll share them with a team that reviews each other’s code and treats incidents as chances to learn, not to assign blame.

The role also takes patience. Partner APIs change, certifications move at their own pace, and many decisions are judgment calls between fast and durable. The team works on Hawai?i Standard Time, so Southern California candidates should expect a workday that starts mid-morning and runs into the early evening.

WHAT YOU’LL BRING TO THE TEAM

You’ve shipped production-grade software in a SaaS or product-driven environment, and you’ve built third-party integrations that stay reliable. That means 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. So is experience with partner certification programs or with AI/LLM APIs for data mapping.

You’re probably a fit if:

You enjoy the detective work of making systems agree. You trace a mismatched record through logs, payloads, and mappings to its root cause, so the customer’s numbers line up every time after.

You make sound calls between fast and durable. When an API change collides with a deadline, you weigh a quick patch against a retry-safe fix and choose the path that keeps customer data safe.

You keep your commitments when priorities compete. You juggle a new build, a production fix, and a partner certification, and everyone waiting on you knows when their piece is coming.

You adjust quickly when the ground shifts. When a vendor deprecates an endpoint mid-sprint, you re-plan and keep customers connected without them noticing.

You translate between technical and non-technical worlds. You explain trade-offs in plain language and bring Product, Support, and customers in early, so what you ship solves the real problem.

WORK LOCATION

Honolulu, Hawaii — Hybrid | Orange County or Los Angeles, CA — Remote

We welcome applications from candidates based in Hawaii, who would work a hybrid schedule out of our Honolulu office, as well as fully remote candidates based in Orange County or Los Angeles. Hawaii-based candidates are preferred, followed by candidates in Orange County. Remote candidates must be available during Hawaii Standard Time (HST / UTC-10) business hours.

Hawaii (Hybrid): In office Tuesday – Thursday | Option for Remote Monday & Friday
Southern California (Remote): Hours: Hawaii Standard Time (HST / UTC-10)

COMPENSATION

The base compensation for this position is $110,000.00 – $137,000.00 per year depending on experience and qualifications.

WHY PROSERVICE

ProService is a Hawaii-based PEO combining payroll, HR, and benefits expertise with purpose-built technology — all backed by the best local service in the islands. Backed by Silver Lake and recognized as one of Hawai?i’s Best Places to Work for 20 consecutive years, we’re a team of high performers united by one mission: Empowering Employers to Succeed in Hawaii.

A PROhana unlike any other. We assume the best in each other, give feedback focused on what’s right—not who’s right—and show up every day. This isn’t just a workplace. It’s a community.

Do work that matters. You’ll see exactly how your contributions move the needle—meaningful problems, real decisions, and a seat at the table.

Grow without a ceiling. Internal roles post first, and we reimburse certifications, conferences, and memberships. Your growth is our growth.

Compete, collaborate, and win together. High expectations, real accountability, and a team of experts ready to help you push through any obstacle.

Total rewards built around your whole life. Fully paid healthcare, 401(k) matching, paid parental leave, student loan assistance, employee assistance programs, and paid time off—just to name a few.