How to Hire a Part-Time Marketing Assistant Who Uses AI

Write a job description around outcomes and hours, such as 12 hours a week for social posts, the newsletter and review replies, name the AI tools they'll use on company accounts, and test shortlisted candidates with a paid two-hour task that requires using AI and then fixing its output. Hire the best editor and fact-checker, not the fastest prompter.

AI has made marketing volume cheap. Anyone can produce thirty captions in a minute. What's still scarce is judgement: knowing which post suits your customers, spotting the invented detail before it's published, keeping your voice consistent, and knowing when not to post at all. A part-time assistant who uses AI well can cover more ground in twelve hours than someone working without it, but only if you hire for that judgement and set up the tools and rules properly. The employment side (contract, pay, holidays, the right to work) follows the usual rules where you are, so check anything unfamiliar with an adviser.

Follow me on Instagram@sagnikteaches

The example throughout is an independent café with a small events programme: acoustic evenings, a monthly quiz and seasonal menus. The owner had been doing the marketing in snatched minutes and wanted someone for about twelve hours a week.

Connect on LinkedInSagnik Bhattacharya

Decide what twelve hours a week should produce

Start with the output, not the job title. Listing each task with a realistic time, and the part AI can take, gives you the hours, the job description and later the measures of success. If you're still deciding whether to hire at all, AI marketing tools vs hiring a marketer compares the costs.

Subscribe on YouTube@codingliquids

Twelve hours, and notice that a third of them are things AI can barely help with: taking photos on site, attending the check-in, being present at events. That's why the role still needs a person, and why the person needs to be good at the parts AI can't do.

The marketing assistant job description, filled in for a café

A marketing assistant job description for this role should state the AI expectations plainly, so candidates who dislike AI and candidates who'd let it run everything both rule themselves out. Here's the café's version, with the pay rate left for you to set from local pay data. For a general method of drafting job descriptions with AI, see writing job descriptions with AI that attract good hires.

Part-time Marketing Assistant (12 hours a week)

About us
An independent café with a busy events programme: acoustic evenings,
a monthly quiz and seasonal menus. We want more regulars at our
events and a steadier Instagram presence.

What you'll do
- Plan and publish three Instagram posts a week, plus stories
- Write and send our monthly email newsletter
- Post updates on our Google Business Profile and draft review replies
- Promote each event: poster copy, listings, reminder posts
- Take photos and short videos on site at least twice a week
- Share a short weekly summary of what worked

How we use AI
You'll use AI tools on company accounts to draft captions, emails and
replies, and to plan content. You are responsible for everything
published: every price, date and claim must be checked, and you'll
follow our brand voice guide. Customer details never go into AI tools.

You'll be good at
- Writing short, warm copy that sounds like a person
- Spotting mistakes, including confident ones
- Taking decent phone photos of food and people
- Working to a simple weekly plan without close supervision

Hours and pay
12 hours a week, including some evening events.
Rate: [your rate] per hour. Trial period: [length].

To apply
Send a short note (not a CV alone) telling us one thing you'd change
about our Instagram, and why.

The final line is doing a lot of work. It asks for something only a person who has actually looked at your account can write, which filters out mass applications, whether written by AI or not.

Freelancer or part-time employee?

Twelve hours a week can be filled either way, and the choice changes more than the paperwork. Whether someone counts as employed or self-employed depends on the real working arrangement, such as who sets the hours and who controls how the work is done, and the rules differ from place to place, so take advice if you're unsure. The practical differences for a marketing role are these:

• Tools and accounts. A freelancer usually brings their own AI and design subscriptions, which is convenient until they leave with your templates and prompt library inside their accounts. An employee uses yours by default.
• Presence. The café's role needed someone on site at events and busy lunchtimes to take photos. That regular, scheduled presence fits employment more naturally than freelancing.
• Cost per hour. Freelancers typically charge more per hour than the equivalent wage, because they cover their own equipment, gaps between clients and holidays; employees cost you employer contributions, holiday pay and training time instead. Compare the full cost of each, not the headline rate.
• Breadth. An experienced freelancer may bring ideas from other clients; a part-time employee grows into your business and knows your regulars by name.

The café chose a part-time employee because being on site mattered most. A business that needs occasional campaigns rather than weekly presence might sensibly choose the opposite.

Sifting applications, including the AI-written ones

Expect many applications to be drafted with AI. That's not a problem in itself; a marketing assistant who uses AI to write a cover note is doing what you're hiring them to do. The question is whether they edited it into something specific. Compare two illustrative openings the café received:

Generic: "I am a passionate and creative marketing professional with a proven track record of driving engagement and elevating brand presence across multiple social media platforms."

Specific: "Your acoustic nights look great, but I only found out about the September one from a poster on your door. The Instagram post went up the same day. I'd post a week ahead, then a reminder on the day with a clip from the last one."

The first could have been sent to any business in the world. The second shows the applicant looked, noticed a real gap and proposed a fix. The café shortlisted five people from 38 applications, using three questions: did they answer the "one thing you'd change" question specifically, is there evidence they can take a decent photo, and does their writing sound like a person?

A paid test task that shows how someone uses AI

Interviews reveal how people talk about AI. A short, paid task shows how they use it. Pay for the time, even if the amount is modest, because it's real work and it attracts better candidates. The café's brief:

Test task (2 hours, paid)

We're running a quiz night on Thursday 23rd, 7.30pm, $5 per person,
teams of up to 5, winning team gets a $40 tab. Our autumn menu
launches the same week (pumpkin and sage soup, chai latte, apple
crumble slice).

Please send us:
1. Two Instagram captions (quiz night, and autumn menu launch).
2. A 120-word newsletter section covering both.
3. A reply to this real review: "Lovely coffee but waited 20 minutes
   for a sandwich on Saturday. Staff seemed stressed."
4. The prompts you used, the raw AI output, and a line on what you
   changed and why.

Use any AI tools you like. Don't invent details we haven't given you;
if you need something, list it as a question.

Item 4 is the heart of the test. Seeing the raw AI output next to the final version shows exactly how much judgement each candidate applied. The café scored each submission out of 20:

Two submissions show why the rubric matters. Candidate A returned polished work in 40 minutes. Her quiz caption called the café "the town's favourite quiz venue", used twelve hashtags where Instagram now allows five, and her review reply offered "a free lunch on us next time", something the owner would never have approved. Her notes said she'd "tidied the AI's wording". Score: 9. Candidate B took the full two hours. Her captions used four hashtags and nothing the brief didn't contain, her review reply apologised for the wait and mentioned the café's new Saturday rota without offering anything, and she asked whether the quiz tab included alcohol. Her notes listed six specific edits, including removing an AI-invented "vegan option available" from the soup. Score: 18. Candidate B was hired.

Interview questions that test judgement with AI

Keep the interview practical. These questions work well, with the kind of answer that suggests good judgement in brackets. More ways to test AI skills in interviews are in how to test job candidates' AI skills.

1. "Walk me through your test task: what did the AI get wrong?" (Specific errors, not "it was fine".)
2. "What would you never let AI write for us?" (Complaint replies without approval, anything with prices they haven't checked, anything pretending to be a customer.)
3. "How would you make AI sound like us rather than like everyone else?" (A voice guide, examples of past posts in the prompt, heavy editing.)
4. "A customer posts that they found a hair in their soup. What do you do?" (Tell the owner first; don't reply until agreed.)
5. "Which AI tools do you use, and which have you stopped using?" (Real tools and reasons; ask a follow-up about one to check. If someone says they rely on LinkedIn's built-in AI post writer, for instance, note that LinkedIn's own help page currently describes that tool as not available.)
6. "What would you do in your first two weeks?" (Look before posting: learn the customers, the menu and the regulars.)

Accounts, access and rules before the first shift

Most problems with part-time marketing help start with accounts in the wrong name. Set these up before day one, following the fuller checklist in onboarding new hires onto your AI tools and rules.

• An AI account the business owns. ChatGPT Business and Claude Team both need at least two seats, so a small business pays for two (about $40-$50 a month) or uses an individual plan in the business's name. Either way, the business holds the login. Business plans don't train on your content by default; on individual plans, switch model training off in the privacy settings.
• Design tools on the business's plan. If you use Canva, its AI features draw on a monthly allowance, so one shared business account is easier to manage than a personal one.
• Social and email access through proper roles. Add the assistant as a user or admin on the business's accounts rather than sharing your own password, so access can be removed cleanly later.
• A one-page brand voice guide. Five words that describe your tone, five you never use, and three past posts you love. See building a brand voice guide AI can follow.
• Approval rules in writing. For the café: anything mentioning a price, an allergen, a complaint or a promise needs the owner's sign-off; routine posts don't.

The first 90 days: the café's numbers

The café set a few simple measures before the assistant started and checked them monthly. The figures below are illustrative; the point is to record your own starting numbers so you can judge the hire on evidence.

• Consistency: Instagram went from about four posts a month, at random, to twelve to fourteen, planned a fortnight ahead.
• Events: quiz night attendance rose from around 18 people to around 30 over three months, and the assistant could show that most new faces mentioned Instagram or the newsletter.
• Reviews: average reply time on the Google Business Profile fell from "whenever the owner remembered" to within two days, with every complaint reply approved first.
• Owner time: about three hours a week of marketing work handed over, plus the 30-minute weekly check-in.

The weekly check-in kept these numbers honest without turning into a meeting for its own sake. The café's 30-minute agenda, filled in for a typical week:

• Last week (5 minutes): 3 posts and 6 stories published; quiz reminder reached noticeably more people than the menu post; one review reply waiting for approval.
• Checks (5 minutes): owner spot-reads two posts and the newsletter draft for accuracy and tone.
• Next week (15 minutes): agree the three posts, the event to push, and any photos to take on Saturday.
• Anything odd (5 minutes): complaints, tricky messages, or AI output the assistant wasn't sure about.

Costs were easy to add up. In this illustration the café paid $20 an hour, so twelve hours a week came to about $1,040 a month (12 × $20 × 52 ÷ 12), plus two ChatGPT Business seats at about $40 a month on annual billing, one for the owner and one for the assistant. Against that sat an extra dozen quiz-goers a month spending on food and drink, and three hours of the owner's week back. Set your own rate from local pay data and run the same sum.

Warning signs in the first month

A few early warning signs, with illustrative examples of how each showed up:

• Invented details. A post for the autumn menu described "our famous homemade scones", which the café doesn't sell. It came straight from an AI draft. Raise it the same day and ask the assistant to explain their checking routine.
• Personal tools creeping in. The assistant pasted a list of customer emails into a personal AI account "to tidy the formatting". Customer data stays out of AI tools; say so again, kindly and clearly.
• Volume over quality. Five posts a day, all similar, with engagement falling. More isn't better; agree the plan and stick to it.
• Everything needs your approval. If you're approving every story, the rules are too tight or trust hasn't formed yet. Loosen routine approvals once the first month goes well.

When the arrangement ends: getting everything back

Part-time marketing roles turn over more often than most, so plan the exit on day one. When the café's first assistant eventually left for a full-time job, the handover took an hour because these were already in place:

• Every social, email and review account belonged to the business, with the assistant added as a user, so removing access was a few clicks rather than a password hunt.
• The prompt library (the dozen prompts the assistant had refined for captions, newsletters and review replies) lived in a shared business document, not a personal AI account.
• Designs and templates sat in the business's design account, and the photo archive in the business's cloud storage.
• The last two weeks included a short written note: what's scheduled, what's working, what to stop doing.

The prompt library turned out to be the most valuable thing left behind. The next assistant started from prompts that already produced the café's voice, instead of from scratch.

If the role grows beyond marketing into general admin, the related tutorial on writing a job advert for an AI-savvy admin assistant covers that broader hire.

Further reads

• How to Plan a Month of Marketing Content With AI in One Hour — A monthly planning routine to hand your new assistant.
• Social Media Pre-Publish Checklist for AI-Drafted Posts — The checklist their AI-drafted posts should pass.
• How to Write an AI Usage Policy for Your Small Business — Put the rules they work within in writing.
• How to Write Job Adverts With ChatGPT Without Biased Language — Keep the advert itself free of biased wording.
• How Much Time Can AI Save on Social Media Management? — Realistic time savings to plan their hours around.
• How to Choose a Marketing Agency That Uses AI Responsibly — If an agency starts to look like the better option.
• AI Assistant vs Virtual Assistant: Which Should You Pay For? — A side-by-side comparison, a food truck owner's week sorted task by task, real costs of each and when a small business needs both.
• Can a One-Person Business Automate Its Marketing With AI? — What a solo owner can hand to AI and automation, what should stay personal, a worked week with costs, and the checks that stop silent failures.
• AI Tools and AI Development: The Complete 2026 Guide — the AI hub, including every tutorial in the AI-for-business series.

Sources: the series fact sheet for ChatGPT Business and Claude Team seat minimums and prices, Instagram's hashtag limit, Canva's AI allowance and LinkedIn's AI writing tool status.