We build stores that turn browsing into buying.
Senior Shopify developers who ship fast, clean stores — on a fixed price, with zero handoffs.
Two Shopify apps, built for real merchant pain.
Reorderly
Reorder alerts, purchase orders, receiving, and stock counts — plus demand forecasting and one-click Stocky migration. Built for merchants who need their workflow back.
Learn moreAI Share of Voice
Track your brand's visibility in ChatGPT, Gemini, and Perplexity. Weekly benchmarking, citation logs, and a product fix list that tells you exactly what to improve.
Learn more
One senior developer on the call and the code.
Devmerx is a small Shopify & WordPress studio. No account managers, no handoffs — you talk to the person building your store. We scope in writing, ship in weekly sprints, and stay after launch.
- ✓Same developer from first call to launch
- ✓Fixed price, locked scope, no surprise invoices
- ✓30 days free support after every launch
One team for everything your store runs on.
From custom apps and themes to migrations and ongoing support — we handle the full stack so you can focus on selling.
Explore all servicesShopify app development
Custom apps that automate your operations or ship to the App Store — scoped, built and maintained by us.
Custom Shopify themes
Hand-coded Online Store 2.0 themes that load fast and look like your brand — not a template.
Store setup, migration & WordPress
Full builds from zero, or migration from WooCommerce and Wix — products, customers and SEO intact. Plus custom WordPress & WooCommerce sites.
From first call to launch, without the chaos.
Free consultation
A 20-minute call about your store, your problem and whether we're the right fit. No pitch deck.
Fixed scope & quote
Within 48 hours: a written scope, a fixed price and a realistic timeline. You approve before anything starts.
Launch & 30-day cover
We handle the go-live, monitor everything, and fix anything that comes up — free for 30 days.
Six promises. All measurable.
No vague agency talk — these are the six things every Devmerx project is judged against.
Revenue per visitor, up
UX + speed + CRO working together. We track meaningful lift with you.
PageSpeed 90+ target
Slow pages cost sales. We target 90+ on every build and track it.
Staging before production
No untested builds shipped to your live store. Ever.
Same developer, start to finish
No handoffs, no re-explaining context mid-project.
One price, in writing
Scope locks before a line of code is written. No surprise invoices.
Your team edits without code
CMS-native components so your team updates content in Shopify's editor.
Before you ask.
Most custom apps we build land between $3k and $15k depending on complexity. After the free call you get a fixed quote in writing — the number never moves without your sign-off.
Typically 3–6 weeks from kickoff to launch, including two feedback rounds. You'll see a working staging link at the end of every week.
Yes. We map every URL, set up 301 redirects, preserve metadata and structured data, and monitor Search Console for 30 days after the switch.
Yes — custom WordPress sites, WooCommerce stores, and moves in either direction. We'll recommend the platform that actually fits your business.
Every project includes 30 days of free support. After launch, most clients move to a monthly retainer or come back per-project. No lock-in either way.
Email plus a weekly check-in call, and you always have the developer's direct line. We reply within one business day, often same-day.
Still have questions? Email us directly
Find out what your store could do better.
A free 20-minute review call: we look at your theme, apps and speed, then send you our honest notes — whatever you decide to do next.
No pressure, no follow-up sequence — just one reply from a developer.