API and Legacy Systems Integration Engineer

HushOne, Inc.; Kirkland (WA); Hybrid; USD 120,000 - 180,000; Full time

Job summary

HushOne, Inc. is hiring a focused integration engineer to connect communications, calendars, commerce, and business systems using supported APIs, webhooks, and event streams. You will handle OAuth, quotas, schema changes, and duplicate events while ensuring reliability and operability of integrations.

We value depth in REST, GraphQL, gRPC, SOAP, SQL, messaging, or enterprise integration tools and seek someone who can leave integrations that others can operate and maintain.

Qualifications

• Strong application integration experience with production systems behind it.
• Depth in REST, GraphQL, gRPC, SOAP, SQL, messaging or enterprise integration tooling.
• You make an unreliable interface reliable through retries, idempotency and reconciliation.
• You leave integrations somebody else can operate.

Responsibilities

• Build integrations for communications, calendars, commerce and business systems using supported APIs, webhooks and event streams.
• Handle OAuth, quotas, schema changes and duplicate events.
• Use narrowly scoped browser automation only where authorized and appropriate.

Skills

Application integration

REST

GraphQL

gRPC

SOAP

SQL

Messaging

Enterprise integration tools

Reliability engineering (retry/idempot

Tools

REST API

GraphQL

gRPC

SOAP

SQL

Messaging

Job description

You connect a person's agent to the services that already run their life and business: the bank, the calendar, the practice-management system, the thing the accountant insists on. Making an ordinary workflow dependable across interfaces that were never designed for this is the work, and it is mostly about failure handling rather than the first successful call. Depth matters far more here than familiarity with every format.

The work:

Build integrations for communications, calendars, commerce and business systems using supported APIs, webhooks and event streams. Handle OAuth, quotas, schema changes and duplicate events. Use narrowly scoped browser automation only where authorized and appropriate.

What good looks like:

In your first 90 days, deliver one complete workflow across two selected services with retries, reconciliation and an understandable audit trail.

Evidence we look for:

Bring strong application integration experience. Relevant work may involve REST, GraphQL, gRPC, SOAP, SQL, messaging or enterprise integration tools; depth matters more than knowing every format.

Required:

• Strong application integration experience, with production systems behind it
• Depth in some of REST, GraphQL, gRPC, SOAP, SQL, messaging, or enterprise integration tooling
• You make an unreliable interface reliable through retries, idempotency, and reconciliation
• You leave integrations somebody else can operate

Nice to have:

• Legacy enterprise systems specifically
• Event-driven architecture
• You have integrated something with no usable documentation

The exercise:

Design a booking flow where one service succeeds and another fails, without misleading the user about the final state.

How we work:

We work together in the office, five days a week, and you can be based at any of our garages: Kirkland Garage (Kirkland, WA); UAE Garage (Dubai, Dubai). We hire across the United States, India and the UAE. We are remote-friendly around family: if you need to work from home some days to look after the people you love, we arrange that with you one person at a time, and we encourage people to use it rather than tough it out.

Pay:

We publish what we pay. Indicative ranges by market and level are on our compensation page, and they are realistic going market rates rather than headline numbers. Wherever we hire we pay at least the local market rate, and for full-time roles our floor is a living wage, never the statutory minimum. Compensation is reviewed every year and on promotion.

Equity:

Every full-time teammate gets stock options. Four-year vesting with a one-year cliff, sized to role, level and impact, and confirmed in writing at offer. High performers earn refresh grants.

Bonus and commission:

An annual performance bonus tied to clear company and personal goals, indicatively 10 to 20 percent of base for non-sales roles. Customer-facing roles carry on-target earnings, typically a 50/50 split of base and variable, with uncapped commission and accelerators above quota.

Health and peace of mind:

Medical, dental and vision for you and your family, plus life and disability cover. We have chosen the highest plan tier available to us rather than the cheapest one that clears the bar, because the point of this is that you never have to think about it. The specific plan numbers are confirmed in your offer letter.

401(k) with company matching:

A 401(k) with a company match, so the years you spend here compound into something that is yours whatever happens next. The match formula is confirmed in your offer letter.

AI tokens:

A budget of AI tokens of your own, because a company that says you should own your AI cannot be the company that rations it. Use them on the work and on whatever you are curious about.

Gym, and the everyday things:

A gym membership, and a corporate benefits programme with its own app, where you redeem real discounts with a long list of retailers on the ordinary purchases of a life.

Family:

We are remote-friendly around your family, arranged one person at a time, and we would rather you took it than toughed it out.

Referrals:

Refer someone we hire full-time who stays a year and you get $1,000 plus $10,000 in referral stock-based equity, on top of your own package.