Shopify Development
Ready to Migrate or Refresh Your Shopify Store?
Our team of Shopify specialists, designers, and developers is here to help you every step of the way. As trusted partners, we provide the technical expertise, strategic guidance, and hands-on support merchants rely on. Whether you’re moving to Shopify or revamping an existing store, we’ll make sure you have the right people, tools, and solutions in place to drive consistent, sustainable growth.
All-Inclusive Shopify Development Services
Shopify Store Setup & Launch01
Our Shopify store setup service gets your store live fast, fully configured to your brand and goals. We handle theme selection, installation, layout, apps, payment gateways, and domain/SSL setup, so you launch a secure, high-performing Shopify site in days, not months.
Custom Shopify Theme Development02
We design and develop custom, conversion-focused Shopify themes that look great and load fast. Our team codes pixel-perfect layouts in clean HTML, CSS, and Liquid, integrates essential third-party apps and APIs, adds advanced sections and interactions, and optimizes UX, navigation, and search to help customers find products and convert.
Shopify App Integration & Custom Solutions03
We extend your Shopify store with powerful app integrations and custom solutions. From Shopify Admin, POS, and Online Store apps to Klaviyo, Mailchimp, Google Shopping, reviews, wishlists, email/SMS and more, we design, configure, and optimize everything to match your workflows and growth goals.
Shopify 2.0 & Shopify Plus Migration04
Upgrade to Shopify 2.0 or Shopify Plus with safe data migration, mobile-first themes, and practical, role-based training tailored to your team. We migrate products, customers, orders, content, and URLs with redirects and SEO best practices, then show your staff how to manage sections, templates, apps, and advanced features for long-term growth and success.
Headless Shopify & Composable Commerce05
Unlock headless Shopify and composable commerce to gain full frontend freedom and blazing-fast performance. Use modern frameworks like React or Next.js for custom storefronts, connect web, apps, and kiosks in one unified stack, and keep Shopify as your secure, scalable ecommerce engine.
Our Proven Shopify Development Process
No matter your goal, Shopify migration, redesign, or a brand-new build, our Shopify development process is structured, transparent, and optimized to launch fast without sacrificing quality.
01. Discovery & Project Requirements
Are you switching from WooCommerce, Magento, or another platform? Refreshing an underperforming Shopify store? Or launching a completely new Shopify website? We start by gathering detailed business, design, and technical requirements. This helps us define the most efficient, scalable, and cost-effective approach tailored to your store’s growth goals.
02. Clear Estimates & Roadmap
Once the scope is agreed, we share a clear project estimate covering design, development, QA, and launch. You’ll receive a transparent timeline, milestones, and a Shopify project roadmap. We also set up weekly check-ins so you can review progress, ask questions, and give feedback in real time.
03. Shopify Store Development
Guided by the project plan, our Shopify developers get to work. We customize or build themes, integrate and configure apps, and develop any required custom features. All tasks are tracked in a project management tool, so you always know what’s in progress, what’s completed, and what’s coming next.
04. Rigorous QA & Cross-Device Testing
Our QA team validates every release in parallel with development. They test each page and feature across major devices and browsers to ensure flawless layouts, smooth user journeys, and bug-free functionality. We aim for pixel-perfect implementation so your Shopify store looks and works exactly as intended.
05. Analytics & Marketing Tag Implementation
We configure essential tracking and marketing tags, such as Google Analytics, Google Tag Manager, Meta (Facebook) Pixel, and other performance or remarketing tools. Our team verifies that events and conversions fire correctly so you can trust the data powering your marketing and CRO decisions.
06. Post-Launch Support & Optimization
After your Shopify site goes live, we don’t disappear. We provide ongoing support to handle updates, performance improvements, Shopify app changes, conversion rate optimization, and A/B testing. As your business grows, we help you roll out new features and enhancements to keep your store competitive and conversion-focused.
Why Choose Mondaysys for Your Shopify Development?
01. Dedicated Shopify Engineers
Our certified Shopify developers live and breathe the platform. They understand what’s possible, what’s practical, and how to deliver scalable Shopify solutions while keeping your development and maintenance costs under control.
02. Performance-Optimized, Clean Themes
We build fast, SEO-friendly Shopify themes with clean code—no bloated apps, no unnecessary scripts. The result? Quicker load times, better Core Web Vitals, and an improved user experience that boosts conversions.
03. Rigorous QA on Every Release
Every feature, page, and integration is thoroughly tested across devices, browsers, and screen sizes. Our QA team checks functionality, layout, and tracking so your Shopify store is stable, bug-free, and ready for real customers.
04. Transparent, Collaborative Workflow
We work with you, not just for you. You’ll get regular updates, demos, and honest recommendations, especially when there’s a smarter, more cost-effective way to achieve your Shopify goals.
05. High Quality, Cost-Effective Delivery
You get premium Shopify development without enterprise-level pricing. We agree the scope and costs upfront, with no hidden fees, so you always know exactly what you’re paying for.
06. Trusted by Growth-Focused Brands
Leading companies rely on us for Shopify development, optimization, and QA. Our long-term partnerships and high client satisfaction are proof that we deliver results, not just websites.
What Our Clients Say About Working With Us
From Shopify store builds to performance-driven CRO and custom development, our clients trust us to ship reliable, high-converting solutions on time and on budget. Read how brands like yours have improved site speed, boosted conversions, and scaled revenue with our team by their side.
“We launched a clean Shopify migration in 5 weeks no downtime and saw +27% revenue over BFCM.”
Our legacy store crashed under promo traffic. Mondaysys planned a phased cutover, live-synced inventory, and rehearsed rollback paths. Launch day felt boring in the best way and BFCM finally scaled without firefighting.
“The LLM chatbot deflects 38% of tickets and cut first response time to under a minute.”
Support was drowning in “Where’s my order?” tickets. Mondaysys trained an LLM on our policies, added guardrails, and integrated with Helpdesk for order status and refunds. Agents now handle the hard stuff; the bot handles the rest, fast.
“Their QA discipline drove defect escape below 0.8% releases are finally boring (in the best way).”
We shipped features but also bugs. Mondaysys built a risk-based test plan, added Playwright automation, a11y checks, and data-layer contracts. A pre-release gate stopped regressions cold users noticed stability, not slips.
“Cloud cost down 35%, deployments moved from weekly to daily, Mondaysys modernized our DevOps fast.”
Infra spend climbed while deploys lagged. Mondaysys right-sized clusters, set autoscaling, codified everything in IaC, and rebuilt CI/CD with canary releases. Teams ship daily now and finance finally smiles at the bill.
“The mobile app relaunch cut crash rate by 70% and bumped ratings from 4.2 to 4.8.”
Crashes spiked during peak hours. Mondaysys instrumented the app, traced memory leaks, added offline caching and progressive sync, and simplified onboarding. The app feels instant; reviews turned into referrals.
“Attribution finally makes sense, CAC down 15% after Mondaysys fixed our GA4 and data layers.”
Our channels argued over credit; budgets were blind. Mondaysys audited tags, moved us to server-side, deduped events, and standardized UTMs. Now we fund what works—and cut what doesn’t.
“Mondaysys tripled our A/B test velocity and delivered a 22% conversion lift in six weeks.”
Our tests were stuck behind dev queues and a messy data layer. Mondaysys set up a reusable experiment library, fixed analytics contracts, and created a QA checklist so releases didn’t stall. We went from 2 to 6+ tests/month and finally learned what moved revenue.
“Their MondayPOS ERP rollout gave us 98.5% inventory accuracy and cut checkout time by 40%, game changer.”
Shrink and price disputes were draining margins. Mondaysys ran a full stock audit, mapped barcodes to variants, and enforced pricing rules at POS. Cashiers stopped overriding prices; managers got real-time stock lines got shorter, errors vanished.
“Personalized recommendations from Mondaysys boosted AOV by 18% and repeat purchases by 12%.”
Customers couldn’t find the right shades, so carts stayed small. Mondaysys cleaned our catalog, trained an AI ranker on purchase + browse signals, and launched bundles for cold-start users. Discovery felt human, baskets grew overnight.
Got Questions? We’ve Got Answers
What is A/B testing (in one sentence)?
A controlled experiment that splits traffic between two (or more) versions to measure which one improves a target metric (e.g., conversion rate, revenue per visitor).
Why is A/B testing important for my website?
It turns guesses into measured wins, reduces redesign risk, and compounds revenue by shipping only what proves to lift your KPIs.
How long should a test run?
Often 1–2 weeks (sometimes longer) to cover behavior cycles and reach a trustworthy sample; exact duration depends on traffic, baseline conversion, and expected lift.
Will A/B testing hurt my SEO?
No—when done correctly (no cloaking, use 302s for temporary redirects, use rel=canonical, don’t run tests for excessive durations). This is straight from Google’s guidance.
Can I still use Google Optimize?
No, Google Optimize sunset on September 30, 2023. We migrate clients to platforms like Optimizely, VWO, Convert, AB Tasty, LaunchDarkly, or Statsig.
What if my site has low traffic can I still test?
Yes: run higher-impact changes, use site-wide tests, combine micro-conversions, or use methods like sequential analysis and Bayesian approaches; supplement with research (surveys, recordings, heuristic reviews).
What does your “A/B Test Development” include?
End-to-end build: spec → design → engineering (platform-agnostic) → analytics tagging → cross-device QA → launch → monitor → analyze → ship winner → document learning.
Do you handle QA and analytics?
Yes. We pressure-test variants across devices/browsers, validate events (GA4/Segment/Adobe), and share QA checklists and test readouts.
Can Mondaysys work with our existing team?
Absolutely. We plug in as an experimentation pod or augment design/engineering/analytics to increase velocity without disrupting your process.
What tools do you support?
Optimizely, VWO, Convert, AB Tasty, Dynamic Yield, Adobe Target, Kameleoon, LaunchDarkly/Statsig (feature flags), and custom frameworks. We integrate with GA4, Segment, Adobe, Looker, and your data warehouse.
How do I get started with Mondaysys?
Book a quick discovery. We’ll run a rapid audit (traffic, analytics, tech stack), propose a 90-day experiment plan, and start with a pilot test.
How do I hire a great Shopify developer (fast checklist)?
Look for: (1) theme & Liquid mastery, app/extensibility, and Shopify CLI; (2) performance (Lighthouse, LCP/CLS), accessibility, and SEO basics; (3) experience with Shopify Plus, checkout extensibility, Scripts/Functions; (4) analytics/GA4 events; (5) clear comms, clean Git habits, and QA discipline. Ask for code samples and shipped storefronts.
Can you A/B test on Shopify?
Yes, theme variants, templates, sections, PDP, cart, and (with Plus/eligible setups) certain checkout experiences via approved methods or platform tools; Shopify publishes guidance for merchant-assigned testing in specific components.
Do you build custom Shopify features too?
Yes. We handle theme builds, app integrations, performance tuning, internationalization, subscriptions, and CRO-driven UX updates.
How much do your services cost?
We scope to your goals and traffic. Typical models: (1) Experimentation Pod (monthly retainer) for steady velocity; (2) Fixed-fee pilot (audit + 1–2 launches); (3) Project-based Shopify builds. Request a tailored plan after a 30-min discovery.
Do you support Bayesian or frequentist analysis?
Both, we choose based on your data volume, decision cadence, and stakeholder preference, and we document assumptions either way.
What if a test is inconclusive?
We capture the learning, refine the hypothesis, and iterate (bigger change, better targeting, or different step in the funnel).
How many conversions do I need to trust a result?
There’s no single magic number it depends on baseline rate and desired lift. We estimate sample size up front and won’t call a winner before confidence thresholds are met.
How quickly can you launch the first test?
Commonly 1–2 weeks after access and audit (faster if your tagging and environments are ready).
Will experiments slow down my site?
Our builds are performance-first (async loads, minimal blocking, code splitting). We monitor Core Web Vitals on variant and control.
Do you migrate teams off Google Optimize?
Yes, assessment, tool selection, event parity, QA, and phased cutover from Optimize to an enterprise-grade platform.
Can you coordinate with our SEO team during tests?
Yes, we follow Google’s testing guidance (302s, rel=canonical, no cloaking) and share test scopes/URLs so SEO stays healthy.
How many conversions do I need to trust a result?
There’s no single magic number it depends on baseline rate and desired lift. We estimate sample size up front and won’t call a winner before confidence thresholds are met.
What if a test is inconclusive?
We capture the learning, refine the hypothesis, and iterate (bigger change, better targeting, or different step in the funnel).
How quickly can you launch the first test?
Commonly 1–2 weeks after access and audit (faster if your tagging and environments are ready).
Will experiments slow down my site?
Our builds are performance-first (async loads, minimal blocking, code splitting). We monitor Core Web Vitals on variant and control.
Do you migrate teams off Google Optimize?
Yes, assessment, tool selection, event parity, QA, and phased cutover from Optimize to an enterprise-grade platform.
Can you coordinate with our SEO team during tests?
Yes, we follow Google’s testing guidance (302s, rel=canonical, no cloaking) and share test scopes/URLs so SEO stays healthy.
