Senior Ai-Native Engineer | Remote, High-Impact Saas

Fullstack; Ciudad de Mendoza; Remote; ARS 900,000 - 1,300,000; Full time

Job summary

Fullstack is seeking a hands-on Account Manager for multi-location clients in the US and Canada. You own accounts end-to-end, draft brand messaging in Claude, edit to client voice, and run SEO, social, and paid media with conversion tracking and ad-structure oversight.

You’ll build repeatable Claude workflows, briefs, calendars, and trackers, ensuring tone and trust across med spa and senior-living clients, and you’ll decide on budgets and performance with the team.

Job description

Our client is a digital marketing agency that helps multi-location businesses with a physical presence turn strong in-person operations into online revenue. Its clients include med spas and aesthetics practices, clinics, OB/GYN practices, senior living communities, and dispensaries across the US and Canada. They usually have good operations and good reviews, and little online presence.

The agency is AI-native. It runs on Claude and on its own internal operating system and client portal. Anything digital is in scope, from search, SEO, and visibility in AI answers to websites, booking paths, reviews, social, paid media, branding, and fractional CMO support.

Your Role

This is a hands-on account manager role. You own a set of client accounts end to end, from the first proposal through onboarding and the months after. You write the brand messaging and copy yourself, drafting in Claude and editing until it sounds like the client, and you run SEO, social, and paid media directly, including conversion tracking and ad account structure.

Part of the job is building. You'll convert repeated tasks into Claude tools and workflows (briefs, content calendars, trackers) and improve how the team works. Clients in med spas and senior living are particular about tone and trust, so every AI draft gets edited and checked before a client sees it.

This role suits someone who wants the whole account rather than a single channel, and who's comfortable building parts of the process as they go. If you'd prefer to hand execution to a team once the plan is written, it probably isn't the right fit.

You'll

Onboard new accounts and get the site, tracking, and channels live in about two weeks

Confirm conversion tracking counts real bookings before budget moves

Write brand messaging, location pages, and client updates, drafted in Claude and edited by you

Run SEO, social, and paid media hands-on, including ad account structure

Structure multi-location accounts so each location's numbers read clearly, then compare cost per booked appointment and shift budget

Convert repeated tasks into Claude workflows the team uses every week