Hiring a developer is uncomfortable when you can't evaluate the work yourself. You're buying something you can't inspect, from someone whose skill you can't directly judge, and the failure mode is expensive — weeks lost and a store that's worse than when you started. The good news: most bad outcomes come from a handful of avoidable mistakes at the start, not from bad luck. Here's the sequence that avoids them.
Step 1: Write down the outcome, not the task
Most enquiries I get open with a proposed solution: "I need a custom app that does X." Sometimes that's right. Often the underlying goal is achievable a cheaper way the sender hadn't considered. So describe the outcome you want and let the developer propose the route:
- Weak: "I need a developer to build a bundling app."
- Strong: "I want customers to buy three items at a discount, and it has to show correctly in the cart and sync to our accounting."
The second version invites a real recommendation. The first one locks in an approach before anyone has looked at your store.
Step 2: Work out which kind of developer you need
"Shopify developer" covers several different jobs, and the wrong specialist is an expensive mismatch:
- Theme / front-end. Liquid, CSS and JavaScript. Layout, templates, storefront behaviour, small fixes.
- App / back-end. Private apps, the Admin API, automations, webhooks, admin tooling.
- Integrations. Making Shopify talk to an ERP, accounting system, 3PL or CRM.
- Migration. Moving a catalogue and its URLs from another platform without losing rankings.
Plenty of people do more than one. The point is to know which you're shopping for, so you can tell whether the portfolio in front of you is relevant.
Step 3: Look in the right places
Where you look shapes who you get. Referrals from other merchants are the highest-signal source by a distance — someone has already taken the risk for you. The Shopify Partner directory is useful for finding agencies and established freelancers. General freelance marketplaces surface a lot of people fast, but the screening burden lands entirely on you, and rock-bottom pricing there usually correlates with rework. Developers who write publicly about their work are also worth approaching: you can read how they think before you speak to them.
Step 4: Read the portfolio properly
Everyone's portfolio looks good — it's a selection of their best work. Read it for relevance, not polish:
- Have they done work like yours? A beautiful fashion theme tells you little about whether they can integrate an ERP.
- Are the stores live? Open them. Do they load fast, work on mobile, behave sensibly?
- Can they explain what they actually did on a project? "We built the site" is thin. "We built the subscription flow and the warehouse sync" is real.
- Watch for work presented in a way that hides their role — agency subcontractors sometimes show a full store when they built one section of it. Not dishonest, but ask.
The most useful question in any portfolio review: "What was the hardest problem on this project, and how did you solve it?" People who did the work have a specific answer. People who didn't, don't.
Step 5: Have a real conversation
A short call tells you more than a long email thread. You're checking three things: do they understand your business, do they explain things in language you follow without dumbing it down, and are they willing to push back? A developer who agrees with everything you suggest is either not listening or planning to bill you for your own mistakes. The good ones say "that'll work, but here's a cheaper way" — before you've paid them anything. There's a fuller list in the questions to ask.
Step 6: Start small if the project is big
For anything substantial, don't make your first commitment a twelve-week build. Start with a small paid piece of work — an audit, a bug, one contained feature. You learn how they communicate, how they estimate, whether they hit dates, and what their code looks like, for a fraction of the exposure. Any developer confident in their work will happily start this way. Reluctance to be evaluated on something small is itself information.
Step 7: Agree scope and price in writing
Before work starts you want, in writing: what's being built, what's explicitly not included, the price and payment schedule, the timeline, who owns the code, and what happens if something breaks after launch. This isn't distrust — it's how both sides stay out of an argument. Vague scope is the single biggest cause of projects that go over budget, because every ambiguity gets resolved in the middle of the build, under time pressure, by whoever is louder.
Also settle the boring logistics now: how you'll grant store access (a staff account with only the permissions needed, never your own login), where the code lives, and how you'll get it handed over at the end.
Bottom line
Describe the outcome rather than the solution, work out which specialism you need, weight referrals heavily, interrogate the portfolio for relevance, test with something small, and put the scope in writing. None of it requires you to be technical — it just requires you to be specific. That's most of the difference between a hire that works and one you regret.