kidsy startup horizon labs
Marketplace

Kidsy

Kidsy offers affordable, open-box and gently-used kids' gear from top brands, saving your wallet and the planet.

Visit client website
Kidsy product screenshot built by Horizon Labs

Case study

Problem

Kidsy is a resale marketplace for open-box and gently used kids’ gear. Resale marketplaces are operationally sensitive. Small UX or workflow failures quickly turn into customer support load, supply churn, and trust issues.

Common resale marketplace issues Kidsy needed to avoid:

  • Brittle listing and inventory states (available/sold/hidden/returned)
  • Inconsistent buyer experience (search, discovery, checkout edge cases)
  • Operational overhead (moderation, disputes, catalog quality)
  • Need for continuous iteration as real-world transactions reveal gaps

Solution

Horizon Labs provided hands-on engineering support to:

  • Ship and harden core marketplace flows end-to-end
  • Improve reliability and edge-case handling as transaction volume increased
  • Enhance operability so internal teams could manage growth without ballooning support headcount
  • Maintain delivery momentum with strong communication and embedded collaboration

Impact:

  • Stabilized and improved the buyer/seller marketplace loop as the platform grew
  • Reduced operational fragility by addressing real-world transaction edge cases
  • Increased internal confidence and velocity through an embedded engineering partner

Outcome

  • Core commerce loop (list, discover, transact) shipped and hardened end to end
  • Improved reliability across the flows where a failure costs a sale
  • Cut day-to-day support burden by building admin and support tooling into the product rather than into the team’s inbox
  • Engagement sustained past the two-year mark, with marketplace work continuing

Features & Tech Stack

  • Listing creation and management
  • Discovery/search improvements
  • Transaction and payment flow stability
  • Admin/support tooling improvements
  • Operational edge-case handling (refunds, disputes, item states)
"Horizon Labs is extremely communicative, talented, and reliable. They feel like part of our company, even though they’re outsourced."
Shraysi Tandon

Shraysi Tandon

Co-Founder & CEO

See what your project would cost.

Tell us what you're building. After an intro call with our founders, you'll hear back within 72 business hours: a written scope with an hour range and a hard ceiling, or the questions we need answered first.

Get an estimate
Book a call