Key takeaways
  • INSO redesigned a Shopify app for Goodfair to bundle multiple SKUs into single listings, and revamped the theme across the product, brand, and home pages.
  • The engagement ran November 2020 to October 2021 and was delivered ahead of schedule, per the client's own account.
  • A former Goodfair Product Manager left a verified, 5.0-scored review on Clutch (posted Nov 21, 2023), calling INSO "devoted to getting the job done and highly skilled in their field."
  • INSO's own site separately credits a Goodfair checkout redesign with a 10% lift in conversion rate and average order value — a related but distinct claim, made by INSO rather than by the Clutch reviewer.
  • Two Goodfair team members — a Product Manager and an Operations Executive — left Verified testimonials on Upwork (Oct 2021), and the public Upwork contract record shows 1,131 hours at 5.0 over Aug 2020 – Oct 2021.
  • In the public feedback on that contract, the client writes that the complete website redesign and checkout flow "has since boosted conversion and AOV by 15%" — a client-stated figure on an Upwork-verified contract, reported here separately from INSO's own 10% claim.

01 Introduction

Between November 2020 and October 2021, INSO ran a Shopify engineering and design engagement for Goodfair, a secondhand clothing eCommerce company. The work centered on two things: redesigning a Shopify app so it could bundle multiple SKUs into a single listing, and revamping the theme across the product, brand, and home pages. The engagement is documented in a Verified review on Clutch, posted by a former Goodfair Product Manager on November 21, 2023 — two years after the project wrapped.

This case study sticks to what's independently checkable: the scope and outcome described in that review, two Verified client testimonials and the public contract record on Upwork, and the one performance figure INSO's own site attributes to the broader Goodfair relationship. Nothing here goes beyond those three sources.

02 The client

Goodfair is an eCommerce company selling secondhand clothing, based in Houston, Texas, with 11–50 employees. The Clutch review is titled "Shopify Dev & Design for Clothing Company" and categorizes the engagement under Custom Software Development, E-Commerce Development, and Web Development.

i
Note

A resale/secondhand clothing catalog is exactly the kind of inventory where a single Shopify listing needs to represent several distinct SKUs at once — which is the problem the bundling app was built to solve.

03 The challenge

Goodfair needed a Shopify app that could bundle multiple SKUs together, so that a group of items could be sold and managed as a single listing rather than as separate products. Alongside that, the storefront's theme needed a redesign — not a patch to one template, but a revamp that carried through the product pages, the brand pages, and the home page.

04 What we built

The engagement covered two workstreams, both named directly in the Clutch review.

Bundling app redesign

INSO redesigned the Shopify app responsible for bundling multiple SKUs into a single sellable listing. This is app-layer engineering, not theme customization — it's the logic that lets a group of individual products be represented, priced, and sold as one unit on the storefront.

Theme revamp

Alongside the app work, INSO revamped Goodfair's Shopify theme across the product pages, the brand pages, and the home page. The review does not specify further template-level detail beyond those three page types, so this case study doesn't either.

05 Outcome

Three outcomes are documented, from three different sources.

First, per the Clutch review, INSO delivered the engagement ahead of schedule. That's the client's own characterization of the timeline, not an internally-tracked metric.

Second — and this is the strongest number on this page, because the client wrote it, not INSO — the public feedback on the Upwork contract (checked August 31, 2026) states that Alex "has owned our complete website redesign and checkout flow, which has since boosted conversion and AOV by 15%." A client-stated performance figure on a platform-verified contract is rare; most agency case-study numbers are self-reported, so this one is quoted verbatim and attributed rather than rounded or merged with anything else.

Third, separate from both third-party records, INSO's own site states: "a Goodfair checkout redesign that lifted conversion and average order value by 10%." That 10% is INSO's self-published figure and the client's 15% is the client's — they were written independently, plausibly about overlapping-but-not-identical slices of the work (INSO's copy names the checkout redesign; the client's review names the complete website redesign and checkout flow). As with the timeline discrepancy noted below, the two figures are reported as-is, side by side, rather than reconciled into one number.

ClaimSourceStatus
Bundling app redesign, theme revamp, delivered ahead of scheduleClutch review, Nov 21 2023Verified (third-party, Clutch-authenticated)
Website redesign & checkout flow "boosted conversion and AOV by 15%"Client feedback on the public Upwork contract (captured Aug 31, 2026)Client-stated (third-party, on an Upwork-verified contract)
SKU bundling app rebuild, custom sections, returns handling; 1,131 hours at a 5.0 ratingUpwork testimonials + public contract record (captured Aug 31, 2026)Verified (third-party, Upwork-authenticated)
Custom replacements & returns portal (Node.js, React, AWS Lambda, DynamoDB, Klaviyo)INSO portfolio credit "Custom Returns Portal for Shopify" (captured Aug 31, 2026)Self-published; scope corroborated by Tim J.'s Verified testimonial
10% lift in conversion rate and average order valueINSO site copy (content.ts)Self-reported

06 The verified review

The full review is public at clutch.co/profile/insocodes. It was left by a former Product Manager at Goodfair and scored the engagement 5.0 across every category Clutch tracks.

They are devoted to getting the job done and are highly skilled in their field.
— Former Product Manager, Goodfair, via Clutch (Nov 21, 2023, Verified)
DetailValue
Review titleShopify Dev & Design for Clothing Company
Service linesCustom Software Development, E-Commerce Development, Web Development
Project timelineNov 2020 – Oct 2021
Budget band$50,000 – $199,999
Scores5.0 across every category
Review statusVerified, posted Nov 21, 2023

The engagement also appears on INSO's Upwork portfolio (upwork.com/ag/infinite), which lists a showcase item titled "Goodfair.com Shopify Development."

07 What the Goodfair team says

The Clutch review isn't the only third-party record. Two members of the Goodfair team left Verified testimonials — both titled "Shopify Development for Goodfair.com" and dated October 2021 — on the public Upwork profile of INSO's engineering lead (checked August 31, 2026). The Product Manager's testimonial independently names the same scope the Clutch review describes, in more detail:

Alex was a rockstar Shopify developer who helped us scale up our engineering team from the very beginning. Alex and his team… was able to staff all engineering roles we had and execute on our entire product roadmap & vision efficiently and in the highest of quality. The projects that Alex worked on were: setting up all development processes for our Shopify store; rebuilding our SKU bundling Shopify application; constructing new customizable Shopify sections across different pages; liaison between 3rd party integration engineers & myself; how we programmatically handled returns & replacements. I am incredibly proud of the work we were able to accomplish together.
— Tim J., Product Manager, Goodfair · Upwork testimonial, Oct 2021, Verified
Alex was an exceptional engineer. His wide array of skills allowed us to use him to both execute on our internal needs and lead technical integrations with 3rd parties. He was instrumental to our development team, and I would highly recommend him!
— Emily B., Operations Executive, Goodfair · Upwork testimonial, Oct 2021, Verified

The same profile's public work history carries the contract itself, and the client's feedback on it opens by identifying the company: "For context, I was the Product Manager for Goodfair, a leading online thrift store hosted on Shopify." The same feedback (5.0, checked August 31, 2026) describes how the engagement grew — from initial one-off projects to leading all of Goodfair's engineering efforts — and names further scope in the client's own words: building Goodfair's own customer-facing Shopify applications "to remove reliance on 3rd parties," custom landing pages, and a deep Slack integration. It also carries the page's headline metric:

…has owned our complete website redesign and checkout flow, which has since boosted conversion and AOV by 15%.
— Client feedback on the public Upwork contract record, 5.0 · checked Aug 31, 2026

The feedback closes with a direct recommendation: the reviewer writes they "would recommend them for any Shopify stores that need engineering."

DetailValue (public Upwork contract record, checked Aug 31, 2026)
Contract titleLead Shopify Engineer Needed for Hypergrowth eCom Thrift Company
TimelineAug 7, 2020 – Oct 20, 2021
Hours logged1,131
Billed$50,902.50 at $45.00/hr
Rating5.0
Client endorsementsCommitted to Quality, Clear Communicator, Reliable, Accountable for Outcomes, Collaborative
i
Note

The Upwork contract ran Aug 2020 – Oct 2021, while the Clutch review dates the engagement Nov 2020 – Oct 2021. The two records were written independently, years apart, by different platforms' verification flows — the three-month difference at the start is reported as-is rather than reconciled.

One more record fills in a piece of scope both testimonials gesture at. INSO's own Upwork portfolio carries a client-named credit titled "Custom Returns Portal for Shopify" (published mid-2023, checked August 31, 2026), which describes how the relationship started and what one of its custom builds was: "Initially, they invited our team to create a custom reporting tool for KPIs, but so soon we moved to full-time cooperation… One of custom features we developed for Goodfair.com is a completely custom replacements & returns portal." To be clear about provenance: that credit is INSO's own portfolio copy, not a client-verified record — but the scope it names is exactly the "programmatically handled returns & replacements" line in Tim J.'s Verified testimonial above, so the self-published and third-party records corroborate each other.

08 Tech stack

The Clutch review lists the following technologies for the engagement:

  • Shopify — the storefront and app platform.
  • Node.js — backend/app-layer logic.
  • Ruby on Rails — backend services.
  • HTML5 — markup for the theme rebuild.
  • JavaScript and TypeScript — front-end and app logic.
  • React — front-end interface work.

The returns-portal portfolio credit (self-published, see above) adds serverless detail for that specific build: alongside Node.js, React, and Shopify, it lists AWS Lambda, Amazon DynamoDB, and Klaviyo — a picture of the portal as a serverless service sitting beside the store rather than inside the theme.

09 Conclusion

The Goodfair engagement is the rare project with two independent, third-party records of scope and outcome: a Clutch review the client left two years after the work shipped (a bundling app redesign, a theme revamp, ahead of schedule, 5.0 across the board), and a Verified Upwork trail — two client testimonials plus a public 1,131-hour contract record, also rated 5.0 — that names the same scope in the client's own words and carries the client-stated result: a 15% boost to conversion and AOV from the website redesign and checkout flow. Combined with the one performance figure INSO publishes on its own site, it's a case study built entirely from checkable sources rather than internal claims alone.

Need Shopify app or theme work done by a team that ships ahead of schedule? Tell us about the project.

07 Frequently asked questions

What did INSO build for Goodfair?
Per the verified Clutch review, INSO redesigned a Shopify app so it could bundle multiple SKUs into a single listing, and revamped Goodfair's theme across the product, brand, and home pages. The engagement ran from November 2020 to October 2021.
Is the Goodfair engagement independently verified?
Yes. A former Product Manager at Goodfair — an eCommerce company based in Houston with 11–50 employees — left a Verified review on Clutch (clutch.co/profile/insocodes) on November 21, 2023, scoring the engagement 5.0 across every category Clutch tracks.
What did the Goodfair reviewer say about INSO?
The review states: "They are devoted to getting the job done and are highly skilled in their field." The same review notes INSO delivered the work ahead of schedule.
What technologies did INSO use on the Goodfair project?
The Clutch review lists Shopify, Node.js, Ruby on Rails, HTML5, JavaScript, TypeScript, and React as the technologies used.
Are there client testimonials for the Goodfair work?
Yes. Two Verified testimonials titled "Shopify Development for Goodfair.com" (Oct 2021) are public on the Upwork profile of INSO's engineering lead: one from Tim J., Product Manager, and one from Emily B., Operations Executive. The same profile's public work history shows the Goodfair contract at a 5.0 rating over 1,131 logged hours.
Did INSO build a returns portal for Goodfair?
Yes, per two mutually corroborating records: INSO's own client-named portfolio credit "Custom Returns Portal for Shopify" describes "a completely custom replacements & returns portal" built for Goodfair.com (listing Node.js, React, AWS Lambda, Amazon DynamoDB, Klaviyo, and Shopify), and Tim J.'s Verified Upwork testimonial independently mentions the programmatically handled returns & replacements. The portfolio credit is self-published; the testimonial is Upwork-verified.
Did the Goodfair project improve conversion or average order value?
Yes, per the client's own words: the public feedback on the Upwork contract (checked Aug 31, 2026) states the complete website redesign and checkout flow "has since boosted conversion and AOV by 15%." Separately, INSO's own site credits a Goodfair checkout redesign with a 10% lift in both metrics — a self-published figure. The two numbers come from different authors describing overlapping slices of the work, so this page reports them side by side rather than merging them.
AM
Alex Mashkovtsev
Founder · Engineering Lead at INSO

Alex leads engineering at INSO, an AI-native product & commerce studio. He's shipped custom Shopify apps, checkout redesigns, and theme architecture for brands across the US and EU.