Mum & You
United Kingdom · Eco baby care
Zerodata lost in a live-store migration
A Magento to Shopify Plus migration, a redesign and a bundles app.
Read the Mum & You caseShopify builds, without the agency layer.
One senior developer from brief to launch.
For brands that have outgrown theme tweaks, app stacking and agency hand-offs.
“Migrations are where we normally lose money. Tanuj moved us from Magento to Shopify with none of it, and sales grew after.”
Brands shipped62+
On Shopify5+ yrs
Countries served7
Shopify stores, custom apps and dashboards for D2C brands, plus MVPs and Chrome extensions for founders.
tanuj rajput
Senior Shopify and web developer
India, IST (UTC+5:30) · calls in your working hours
You talk to the person writing the code.
I’m Tanuj. I build Shopify stores and the apps, dashboards and AI-search setup around them, plus MVPs and Chrome extensions for founders. I scope it, write it and answer for it, including the parts AI helps write.
For Shopify brands
Shopify stores and migrations
New builds, redesigns, speed work and moves from Magento, WooCommerce or Wix.
- Shipped
- Mum & You, redesign, Magento to Shopify Plus and a bundles app, UK
- Mahina, +28% average order value
Custom Shopify apps
Private apps for what themes and App Store apps can’t do: pricing rules, ERP and accounting sync, checkout extensions. You own the code.
- Shipped
- WeMust, a DTF print-ordering platform with live formula pricing and custom ops apps, Canada
Dashboards on your Shopify data
Replace the spreadsheet with one screen: what to reorder, what to stop buying, where margin is real, and a brief every Monday.
- Shipped
- NutriStar, BrandDesk, a merchandising tool on about 2,000 products and 100,000+ orders
Showing up in ChatGPT and AI search
Product data, feeds, policies and pages that ChatGPT, Gemini and Google’s AI Mode can read, quote and send buyers to.
- Shipped
- This site, several of my clients found me through AI citations
For founders
MVPs and web apps
A first version with accounts, payments and AI features, or finishing an app you started in Lovable or Bolt.
- Shipped
- ShopMyESIM, an eSIM comparison platform with traveller accounts and an operations console
Chrome extensions
Built on Manifest V3 and published to the Chrome Web Store, with the listing and review handled.
- Shipped
- preprompt, a prompt-rewriting extension for ChatGPT, Claude, Gemini and Perplexity that I co-founded and built, now in beta
Five products. I built and shipped every one.
Every one is live, and every one is the kind of thing I build for clients. If you run a Shopify store, start with the first two: check your store with ClearAudit right here, free, and have your developer run Theme Audit, or I’ll run it for you.
tanuj rajput
Free for your Shopify store
Theme Audit
Claude Code skill
Find the issues. Ship faster.
80+ checks on a Shopify theme: speed, accessibility, conversion, app overhead, search and AI-search visibility. Every finding names the file and the line, with a fix.
ClearAudit
Web app
Know what to fix first.
Turns any store page into a ranked list of conversion fixes you can ship this week. A full SaaS with accounts and paid plans, built solo.
AI tools and extensions
preprompt
Chrome · VS Code · MCP
Better prompts. Sharper results.
Type a prompt the way you normally would and hit Rewrite. It sends a sharper version to ChatGPT, Claude, Gemini or Perplexity, with context and format added. I co-founded it and built it.
Enough
Claude skill
Turn messy scope into clarity.
Tells you the truth about your scope, cuts it to the version that ships, and remembers what it cut.
Alter
macOS
Clipboard, without the clutter.
A clipboard manager with AI one keystroke away from any app. Free.
What changed for them.
Fourteen of the 62+ brands I’ve shipped for, each with a written case: what was wrong, what I built, what changed. I wrote the code on every one, and led the developer team at Mahina and Lilliput.
All case studies
NutriStar
India · Sports nutrition
20releases to the live store, each backed up first
A growth role across the store, the sale campaigns and the catalogue.
Read the NutriStar case
WeMust
Canada · Custom print and decoration
+20%checkout rate
A formula-priced DTF print-ordering platform on Shopify.
Read the WeMust caseEleven more, each with its case
- MahinaGurgaon, India+28% average order value
- Bloom BodysuitsUnited States+22% revenue, month on month
- LilliputDelhi, IndiaCustom theme from scratch, launched in about 4 months
- NicobarNew Delhi, IndiaStalled build to launch-ready in about 2 months
- Label NATAGurgaon, IndiaDesigned and built from scratch to launch in 2 months
- Rock Paper ScissorsIndiaLive in one week, against 20 to 30 days asked
- Peekaboo PatternsChennai, IndiaCatalogue rebuilt around how shoppers browse
- ManovyaIndiaProof moved next to Add to Cart on 7 product pages and 5 sets
- Craft & GloryGurgaon, IndiaSale pages matched to each Meta and Google Ads campaign
- Matrix ForexNew Delhi, IndiaLive rates and quote forms, built on Shopify
- ShopMyESIM7 brands, 5,000+ plans, 190+ countries
And 48+ more brands across India, the US, the UK, Canada, the UAE, Singapore and Turkey: under NDA, or shipped white-label.
Official Shopify Partner · verified listingWhy solo
Same scope. Half the layers.
You’re not paying for craft; you’re paying for coordination. Here’s what disappears when there’s one operator instead of a tower of them.
Typical agency
With me
Operator- Communication path
Typical agency
Account manager → PM → devWith me
You ↔ me. Direct.- Decision turnaround
Typical agency
3–5 days, after the sprint reviewWith me
Same day, often same hour- Who writes the code
Typical agency
A vendor you'll never speak toWith me
The person you briefed- Scope creep
Typical agency
Change order. Five-figure addendumWith me
Negotiated in Slack. Quoted once.- Post-launch ownership
Typical agency
Off the contract, off the radarWith me
One operator, before and after launch- True cost
Typical agency
Hidden coordination overheadWith me
What I quoted is what you pay
Some agencies do this right. Most don’t. If yours does, that’s great — keep them.
From brief to launch, with no one in between.
One operator across the whole engagement. This is what the next few weeks look like once you send a brief.
Start a projectDay 0
You send the brief
What you need, what is blocking you, and the budget range. Use the intake on this site, or email.
Within one working day
I reply myself
A scope estimate and a slot for a 30-minute call. The person on the call is the person who will build it.
After the call
A written proposal
A fixed price or a retainer rate, a timeline, and a definition of done. If we agree, I start. No long sales cycle.
Before the build
Shape
Define the revenue goal, customer path, content model, app constraints, and launch risks before the build starts.
Usually 3–6 weeks
Build
Turn the plan into clean Shopify sections, app logic, responsive interfaces, and reusable systems your team can control.
Go-live
Launch
QA mobile states, browsers, speed, tracking, forms, redirects, and handoff details before the store goes live.
7 reviews. 4.7 average.
Collected directly from the teams I built for, with the rating each one gave.
- United States · Furniture4.7
“We kept Tanuj on a monthly retainer because he actually moved our metrics. He did more than build a theme — he built the bundle logic that lifted our AOV, and reworked the checkout based on real data. While he was managing the site, our sales grew meaningfully. The retainer works because he stays with it until the numbers rise, not just until launch.”
BBBug Beater Chairs
Founder & CEO
- United Kingdom · Baby & Parenting4.8
“Migrations are where we normally lose money — data loss, broken links, downtime. Tanuj moved us from Magento to Shopify with none of it. He built a redirect map to preserve our SEO, migrated every customer and order record, and rebuilt our subscription flow inside three months. Sales grew after the migration. He is the cool head in a hot mess of a migration.”
Mum & You
Technical Director
- United States · Shapewear4.5
“We chose Tanuj to own the page and the traffic together. Usually the CRO person does not care about the ads and the ads person does not care about the UX. Tanuj cared about both. He built the theme for our US expansion, ran the CRO tests, and directed the Meta ads team at the same time — so we could change the landing pages in step with ad performance.”
BLBloom Bodysuits
Head of Digital Growth
- Turkey · Multi-reseller eSIM platform4.8
“We wanted a multi-reseller platform on a single Shopify backend, where every reseller has their own storefront, their own pricing and their own payouts. No off-the-shelf solution could give us that. Tanuj built the entire system from scratch — the storefronts and all of the backend logic behind them.”
AEEda Şeker Baydar
Founder & CEO · Adventur eSIM
- United Kingdom · Premium Christian lifestyle4.8
“Tanuj created our brand identity and our Shopify Plus site from scratch — design through to Printful fulfilment. He understood our aesthetic vision and delivered an elite look and feel online. He is detailed and precise.”
SASanctified
Brand Director
- India · Gurgaon · Period care4.5
“We hired Tanuj to deliver inside six months, and he had the build done and launched ahead of that. He gave us an immaculate handoff from Figma to Shopify theme and set up our acquisition funnels quickly, without compromising on quality. Efficient, prompt, and he gets the job done.”
Mahina
Operations Manager
- India · Delhi · Forex and travel insurance4.7
“Tanuj built a genuinely complex system for us. On Matrix Forex he designed a travel insurance comparison and quote flow wired into our CRM, and handled the data and the quote logic cleanly. It proved he can build real web applications on Shopify, not just merchandise products.”
MFMatrix Forex
CTO
Reviews and ratings were given directly by each client team. Quotes are lightly edited for length and readability; outcomes described are as reported by the client.
What could go wrong, and what I do about it.
Hiring one developer instead of an agency carries real risks. These are the ones worth asking about before you brief me. Something else on your mind? Send me the question.
- You’re one person. What if you’re unavailable halfway through?
- Work in progress lives in your own Shopify store and your own GitHub from day one, not on my machine. Payment comes in three parts: 30% to start, 30% at the milestone agreed in the written scope, and 40% at delivery. The service agreement assigns all code, theme files and IP to you on final payment.
- Will you break my live store?
- At NutriStar and Manovya, every change was built on a copy of the theme first. At NutriStar that meant 20 releases from a separate draft theme, each changing only the files involved, with a backup taken first. At Manovya nothing reached the live store until the brand approved it. How the NutriStar releases ran
- Will the price change once we start?
- What I quote is what you pay. The written scope fixes the price, the timeline and the definition of done before any work starts, and the pricing page publishes a price range for every service, in INR, USD or both. If what you need is smaller than my smallest job, I’ll say so and point you to a template or an app instead. See the price ranges
- You’re in India. Will the time zone slow us down?
- Calls happen in your working hours, and the build moves while you’re offline. I work from New Delhi on IST (UTC+5:30), reply within one working day (Monday to Saturday, IST), and have shipped for brands in the US, the UK, Canada, the UAE, Singapore and Turkey.
- Is the code just written by AI?
- You’re paying for the decisions about what to build, and for one person who’s accountable when something breaks. I use AI coding tools every day, and they make me faster.
- Will it drag on for months?
- The written scope fixes the timeline before any work starts. A theme fix, single feature or speed pass usually takes 1 to 2 weeks. Migrations run 2 to 8 weeks depending on catalogue and integrations. Most builds take 45 to 60 days, whether that’s a custom store, a custom app, a dashboard or an MVP.
