How do you handle fraud and fake listings?

Fraud prevention is built into seller onboarding and transaction monitoring: identity verification at signup, listing review for new sellers, velocity checks on transactions, and automated flags for patterns that indicate coordinated fraud. We design for it before launch rather than responding to it after the first incident.

Can you build a marketplace for physical goods?

Yes. Product marketplaces with seller listings, inventory management, order fulfilment tracking, shipping integration, and return processing are a distinct build from service marketplaces. We scope product and service marketplace architectures separately since the transaction flow, the trust requirements, and the fulfilment logic differ considerably.

How do you handle the worker classification risk?

For service marketplaces, whether providers are independent contractors or employees under DOL guidance has significant legal and cost implications. That is a question your employment counsel needs to answer before you design the provider relationship. We build the compliance features the legal position requires, but the classification decision itself belongs with your lawyer.

How is this different from your On-Demand Marketplaces page?

The On-Demand Marketplaces industry page focuses on on-demand services: ride-sharing, home services, food delivery adjacent. This page covers marketplace apps broadly — product platforms, professional service networks, B2B procurement, and rental marketplaces — at the level of build specifics rather than industry context.

Marketplace App Development Company

Building a marketplace is twice the product problem of building a regular app, because both sides have to find the platform valuable enough to stay. A product marketplace with no buyers has no sellers. A service marketplace with no providers has no clients. The technology has to serve both sides simultaneously, earn the trust of both sides independently, and generate enough transactions to keep both sides returning.

Off-the-shelf marketplace platforms handle the standard model. A niche vertical with specific matching logic, a trust requirement that standard platforms do not address, or a payment structure that does not fit the default split-payment template needs purpose-built engineering. The gap between a working marketplace demo and a platform that retains both sides past the first transaction is almost entirely in the payment infrastructure and the trust layer, not the listing interface.

01

Search and Discovery Engine

Relevant search results with category filters, personalised recommendations, and a discovery experience that surfaces the right listing before a buyer decides to look elsewhere.

02

Payments, Escrow, and Payouts

Split payment processing, escrow release on transaction completion, platform fee deduction, seller payout scheduling, and the 1099-K tax form generation that gig economy income reporting requires.

03

Trust, Ratings, and Reviews

Two-sided review systems, identity verification, background check integration, dispute resolution workflows, and seller and provider credentialing tools that let both sides transact with confidence.

Buyers purchasing goods from multiple sellers on one platform, with seller onboarding, product listing management, order fulfilment tracking, and split payment processing and seller payouts.

Clients hiring service providers for skills, professional services, or gig work, with project scoping, proposal or fixed-price flows, escrow release on completion, and two-sided rating.

Businesses purchasing from other businesses, with bulk order management, invoice billing, approved supplier lists, contract pricing, and the procurement workflow an enterprise buyer requires.

A buyer who shops on Etsy or hires through Upwork arrives at a new marketplace with a baseline that applies regardless of the category. Search results that are relevant to the query rather than paid for. A payment that does not release to the seller until the transaction is complete or the service is delivered. A review that reflects a real experience rather than a platform with no mechanism to filter fake ones. Missing any of those three loses both sides of the marketplace simultaneously.

The compliance obligations arrive from two directions. Payment infrastructure has to satisfy PCI DSS for card data handling and, for platforms facilitating service income, the 1099-K reporting thresholds the IRS sets for marketplace facilitators. Service marketplaces also face the worker classification question — whether providers are independent contractors or employees under DOL guidance — which has significant cost and legal implications that belong with legal counsel before the platform goes live.

05 features

Search with relevance ranking and filters
Seller and provider profile and review view
Secure in-platform payment and receipt
Order and project status tracking
Dispute submission and resolution workflow

Core listing, search, and payment flows for a defined category with a limited seller base. These typically fall in the mid five-figure range and take fourteen to twenty weeks to build.

Complete marketplace with trust and safety tooling, review systems, seller onboarding, and advanced payment flows. These sit in the high five-figure range with a twenty to twenty-eight week build.

B2B procurement or multi-category platforms with approval workflows, contract pricing, and enterprise integration. These run into the six-figure range and are scoped individually.

These are market ranges, not fixed quotes. We give you an itemized number after a short discovery call.

01Discovery

We map both sides of your marketplace, your matching and payment logic, your trust requirements, and your compliance obligations before any design decisions are made.

02Design

We prototype the buyer and seller experience separately before development starts, because the friction points on each side are different and require different solutions.

03Development

We build in sprints with regular check-ins, with payment infrastructure and trust tooling built alongside the listing and search features rather than added after.

04Testing

Every build goes through end-to-end transaction testing with real payment flows before release so escrow, payout, and fee deduction logic is validated before real money moves.

We build marketplace apps in React Native for iOS and Android and React for web. The backend runs on Node.js with PostgreSQL for listings, orders, and transaction records. Search and discovery is powered by Algolia or Elasticsearch depending on catalogue size and filter complexity. Payments process through Stripe Connect for split payments, escrow, and seller payouts. Media storage runs on AWS S3 with CloudFront for listing images and seller-generated content.

React Native
React
TypeScript
JavaScript
Node.js
PostgreSQL
Redis
GraphQL
Elasticsearch
Stripe Connect
AWS S3
CloudFront

01

Payment and Escrow Infrastructure Built First

02

Both Sides Scoped And Designed Together

03

Trust Layer Present Before The First Transaction

04

Support Through Every Category And Regulatory Change

Marketplace apps fail most often not at the interface but at the payment flow or the trust layer. We build both as primary engineering problems from the first sprint, not as features added after the core is complete.

Marketplace apps fail most often not at the interface but at the payment flow or the trust layer. We build both as primary engineering problems from the first sprint, not as features added after the core is complete.

Marketplace apps fail most often not at the interface but at the payment flow or the trust layer. We build both as primary engineering problems from the first sprint, not as features added after the core is complete.

Marketplace apps fail most often not at the interface but at the payment flow or the trust layer. We build both as primary engineering problems from the first sprint, not as features added after the core is complete.

01

Payment and Escrow Infrastructure Built First

02

Both Sides Scoped And Designed Together

03

Trust Layer Present Before The First Transaction

04

Support Through Every Category And Regulatory Change

We use Stripe Connect as the payment infrastructure for most marketplace builds. Buyers pay into the platform, the commission is deducted automatically, and seller payouts are scheduled and processed through the same system without manual reconciliation or a separate payout tool.

Marketplace
App Development

Why The Marketplace App Market Needs The Right App