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Agent One
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For Advisors & RIAFor BrandsFor Agent BuildersPartner with Hussh
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Connected systems · H48

Agent Interoperability Engineer

You make Private Agent One work with other agents and tools while keeping the user's authority intact. Everything on the other side of these connections is controlled by somebody else, changes without warning, and fails partially, so the interesting engineering is in the failure handling rather than the happy path.

Apply for this roleAll roles

Open for applications. Starts at: First team.

We are taking applications for this role now and building the pipeline for it. The stage above is when the work itself is expected to begin, which is something you deserve to know before you apply rather than after. It is context, not a gate.

Where

Kirkland GarageUAE Garage

In the office together five days a week, in one of our garages, and remote-friendly around your family, arranged one person at a time. We hire across the United States 🇺🇸, India 🇮🇳 and the UAE 🇦🇪.

The work

What this person actually does

Implement versioned MCP and A2A integrations alongside ordinary APIs. Build discovery, capability negotiation, authentication, task status and error handling. Maintain conformance tests and a support matrix; a protocol handshake must never be treated as blanket permission.

The milestone

What it looks like when it is working

In your first 90 days, demonstrate a local tool, an external service and an independent remote agent working through explicit permissions and cancellation.

Required

What we would not hire without

  • ▸Protocol, API, or distributed application engineering
  • ▸You handle version changes and partial failure deliberately, with examples
  • ▸You design against systems controlled by other organisations without trusting them
  • ▸You test interoperability rather than assuming it from a specification

Nice to have

What would be a bonus, not a gate

  • ▸MCP, A2A, or comparable agent interoperability rails
  • ▸You have written or implemented a public specification
  • ▸Contract or conformance testing

Evidence

What would show us you can do it

Bring protocol, API or distributed application engineering experience. Show how you handle version changes, partial failure and systems controlled by other organizations.

Evidence, not credentials. We are describing work you can point at, in whatever form it exists.

The exercise

How we would look at it together

Design an adapter for a remote agent that supports task creation but cannot guarantee cancellation after execution begins.

The package

What comes with the job

  • ▸Stock options for every full-time teammate, four-year vesting with a one-year cliff
  • ▸Annual performance bonus, or on-target earnings with uncapped commission for customer-facing roles
  • ▸Medical, dental and vision for you and your family, plus life and disability cover, on the highest plan tier available to us
  • ▸A 401(k) with company matching
  • ▸Pay reviewed every year and on promotion, benchmarked to your role and market
  • ▸A budget of AI tokens of your own
  • ▸Gym membership, and retailer discounts redeemed through our benefits app
  • ▸Remote-friendly around your family, arranged one person at a time
  • ▸$1,000 plus $10,000 in equity for a referral we hire who stays a year

Indicative pay ranges by market and level are on the compensation page. Plan numbers are confirmed in your offer letter.

Apply

Apply for Agent Interoperability Engineer

One short form. A person reads every application and you hear back either way. You will get your own link to check where things stand, and you can withdraw or delete your application from it at any time, without an account.

Apply for this job

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Agent Interoperability Engineer

Resume *

Any one of these. If you have not got a PDF to hand, paste the text - it is not a lesser way to apply.

That is everything we need. The rest is optional, and it helps.

Where your work lives

Any of these, none of these. Paste a link and we will look.

In a hundred words or so, the piece of work you are most proud of.

You get a reference number straight away.
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