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Custom Shopify apps, inventory and returns workflows, AI product recommendations and the tooling behind a storefront at real scale.
Built for a US sports retailer
SHOPIFY ENGINEERING · RAILS SYSTEMS · INTEGRATIONS · PRACTICAL AI
We build, take over, and maintain the software your business runs on: custom Shopify apps, Ruby on Rails platforms, integrations, and practical AI.
////WE’VETRUSTED BY
SELECTED WORK
Custom Shopify apps, inventory and returns workflows, AI product recommendations, and the operational tooling behind a storefront that runs at real scale.
clients served since we started
building and running production software
EST + PST
working hours overlap with your team
see real work before you commit
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Custom Shopify apps, inventory and returns workflows, AI product recommendations and the tooling behind a storefront at real scale.
Built for a US sports retailer
Centralized portal, API connections, inventory and product sync, vendor workflows, combined orders.
Built for a fulfilment company · Rails middleware
Long-term Rails product engineering, MLS integrations, and automated marketing for a real estate platform agents rely on daily.
Built for a US real estate marketing platform
Trust compounding: one build for a national restaurant group grew into its youth sports, charity and internal apps.
Production scheduling, roles, locations, and operational workflows for studio operations at scale.
Built for a global film studio group (US and UK)
Property data, MLS integration, calculations, task scheduling, and payment tracking end to end.
Built for a real estate investment platform
THE PROBLEM
If more than a couple of these are true, your tools have started holding the business back instead of moving it forward.
0 / 8
Tick any that sound like your business.
WHAT WE DO
For real estate, insurance, e-commerce, fintech and more. Five things we do every day, from the first build to years of support.
01
Web apps, client portals and SaaS products for teams that have outgrown spreadsheets and off-the-shelf tools. We design it, build it and stay on to run it.
Where we’ve done it
Where we’ve done it
02
We learn the code, fix what is fragile, upgrade it without a rewrite and stay on as your team, so nothing depends on one person again.
Where we’ve done it
Where we’ve done it
03
Orders, stock, leads and numbers that don’t match across your tools. We connect them with APIs and middleware so data moves on its own and nobody re-types it.
Where we’ve done it
Where we’ve done it
04
Inventory, returns, fulfilment and reporting built around how your store runs, for brands selling at real volume.
Where we’ve done it
Where we’ve done it
05
Not a chatbot bolted onto your homepage. AI features connected to your real data, in the workflows your team and customers already use.
Where we’ve done it
Where we’ve done it
OUR STACK
Mainstream languages and frameworks, no lock-in to anything only we understand.
Languages
Back end
Front end
Commerce
Data
Cloud & DevOps
AI & automation
INDUSTRIES
Listing, marketing and MLS tools for brokerages and their agents.
Built for A US agent marketing platform · 20,000+ agents
Agency CRMs that keep quotes, policies and renewals in one place.
Built for US insurance agencies
Stores where inventory, orders and returns match across every channel.
Built for Multi-channel US retailers
Real-time market data and trading tools that have to stay up.
Built for A crypto trading platform
Drops, sizing and multi-store stock for brands that sell fast.
Built for Fast-moving fashion brands
Budgets, approvals and reporting across every franchise location.
Built for A national franchise group
Booking and operations software for production studios.
Built for A global studio group in the US and UK
Platforms that guide students from planning to applications.
Built for US college planning platforms
Load, carrier and dispatch tools that cut the manual work.
Built for A US freight platform
Funding applications and review workflows for charities.
Built for A charity funding platform
Team kit ordering and delivery for clubs and associations.
Built for Hockey and soccer clubs
Product and dashboard work for security software teams.
Built for A security software company
Also: home and furniture, pet products, legal, cloud and DevOps
WHAT CLIENTS SAY
Farooq is an exceptional engineer and a pleasure to work with!
Upwork client
Ruby on Rails engineering contract, 2022-2023
Verified on Upwork
WHY CHOOSE STACKWORX
Most US owners have been burned once: a freelancer who disappeared, an agency that sold seniors and staffed juniors, code nobody else could touch. We set up every engagement so that can’t happen to you.
clients served
building software
US agents on a platform we run
Judge us on real work in your codebase, not on a sales call.
A 30-min call with a senior engineer. We look at your system or idea with you.
A written plan and estimate. Scope, timeline and cost in plain English.
The first week of development, free. Real tickets shipped, not a demo.
Then hourly or monthly. Pick what suits you. Stop anytime.
No contract. If it isn’t a fit after week one, you walk away and keep the work.
Live calls, Slack and fixes during the US day, Eastern to Pacific. No waiting overnight for an answer.
Your lead engineer
Writes the code, joins the calls. Same person every week.
Senior engineers with 8+ years on Rails, React and Shopify do the work you’re paying for. Nothing gets lost in a hand-off.
Code in your repo, servers in your accounts, every decision written down. Leave whenever you want and nothing is held hostage.
Stackworx LLC
Registered in Wyoming, USA. US contracts, USD invoices.
Contract, NDA and payment under US terms, with no overseas wires. Hourly or monthly, and you can stop anytime.
“Communication was clear, deadlines were met.”
Shopify store owner, US
One ordering platform for hockey and soccer clubs across Canada. Associations order team kits, track every order and get it delivered, without spreadsheets or email chains.
Hockey & soccer
Clubs and associations
Order to delivery
In one platform
Kits & sizes
Products, suppliers, shipping
HOW IT STARTS
No long proposals. No three-month discovery phase.
Talk to a senior engineer, not a salesperson. Get an honest answer on what it will take.
Scope, timeline and cost on one page, in phases so you can start small.
Real work shipped in your codebase. Continue, or walk away and keep it.
We maintain, upgrade and improve what we build. Scale up or down anytime.
You only pay from week 2, and only if you continue.
Book a free 30-min reviewTHE TEAM
Senior engineers who stay on your systems for years — not a rotating cast of contractors.
CEO & Founder
FAQS
We build and take ownership of the systems your business runs on: custom Shopify apps, Ruby on Rails platforms, third-party integrations, and practical AI workflows. Most clients come to us when off-the-shelf apps and quick fixes stop scaling.
Both. A large part of our work is taking over existing Rails and Shopify codebases, stabilizing them, and then extending them. We start with a technical audit so you know exactly what you have before anything changes.
We add AI inside the systems you already run rather than bolting on a separate tool. Typical work includes content generation, document and data extraction, product recommendations, and support automation, shipped as a focused AI Integration Sprint with measurable outcomes.
Most clients start with a Technical Audit or an AI Integration Sprint. From there we move to an MVP build or a dedicated product team on a monthly retainer, depending on how much ongoing work you have.
Mostly ecommerce brands on Shopify and SaaS companies in PropTech, InsurTech, and FinTech. Our platforms have processed 32M+ transactions and serve 20,000+ real estate agents.
Our senior engineering team is based in Lahore, Pakistan, and we contract with US clients through Stackworx LLC, our Wyoming company. We work across time zones with regular overlap hours, async updates, and long-term ownership of the systems we build.
INTELLIGENT AUTOMATION
GLOBAL SUPPORT
CONTACT
OFFICES
G3 block, Johar town
Lahore, Punjab, PK
Stackworx LLC
Sheridan, Wyoming, USA