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Registrar & DNS Integrations Engineer

Engineering Full-time

Owns every DNS provider adapter and registrar integration

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This is the domains role. The product connects any domain on any provider, and that only works because someone owns the 25 plus DNS provider adapters and the registrar integrations behind them. You will be that person. You will write and maintain the adapters that read and write records across providers, build the provider OAuth and provider-hosted one-click setup rails that let an end-user approve records without leaving the flow, and own domain search, buy, and transfer through registrar APIs. When a provider changes an API or an apex behaves oddly, this is your problem to solve.

What you will do

Build and maintain the DNS provider adapters that detect a domain's provider and write the correct records across more than 25 integrations.
Own the provider OAuth flows and the provider-hosted one-click setup rails so an end-user can approve records in place instead of copying values by hand.
Integrate registrar APIs for domain search, purchase, and transfer, and keep those flows honest about pricing and availability.
Handle the hard cases: apex domains, CNAME flattening, ALIAS and ANAME records, TTLs, and the quirks each provider ships.
Track propagation and verification so the product knows a record is really live, not just submitted, and reflect that truthfully in the widget and API.

What we are looking for

You have built integrations against many third-party APIs and you are patient with their inconsistencies, undocumented behavior, and rate limits.
You know DNS record types cold and understand why apex handling and propagation are the parts that break.
You are comfortable in Go and TypeScript, and you can build an OAuth flow that is secure and does not annoy the user.
You test against real provider behavior, not just the happy path, because these adapters run in production for every customer.

Bonus

You have worked with registrar APIs for domain search, registration, or transfer.
You have shipped provider-hosted one-click DNS setup or similar record-approval flows.
You have maintained adapters against a large set of providers and have a system for keeping them from rotting.

Ready when you are

Apply for this role

Takes about five minutes. A real person reads every application.

The team

Small, fully remote, senior. You will ship in your first week and own real surface area from day one.

Work location

You choose remote, hybrid, or onsite when you apply. It does not filter you out of any role.

How we hire

You apply. A real person on the team reads it, usually within a week.
A first call. Thirty minutes to trade context, no trick questions.
A focused exercise close to the real work, scoped to a few hours and paid if it runs long.
A final conversation with the people you would work with, then a decision we do not sit on.

Where we stand

Equal opportunity employer

We hire on merit and welcome everyone.

Reasonable accommodations

Available for disability and pregnancy, on request.

Participates in E-Verify

We confirm work authorization only after you accept an offer.

No salary history asked

We never ask what you earned before.

Your data, protected

Applicant privacy notice covering GDPR and CCPA.

Custom Domain is an equal opportunity employer. We do not discriminate in hiring or employment on the basis of race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, genetic information, or any other characteristic protected by applicable federal, state, or local law. All employment decisions are based on qualifications, merit, and business need.

Custom Domain participates in E-Verify. We provide the U.S. Department of Homeland Security and the Social Security Administration with information from each new employee's Form I-9 to confirm authorization to work in the United States. We use E-Verify only after you have accepted a job offer and completed Form I-9.

If you need a reasonable accommodation to take part in the application or interview process, write to accommodations@customdomain.ai. We will work with you on accommodations for qualified individuals with disabilities and for known limitations related to pregnancy, childbirth, or related medical conditions.

Applicants have rights under federal employment laws. See the EEOC Know Your Rights notice, and review our Applicant Privacy Notice. We do not ask for your salary history.