Seller onboarding & verification
Vendor sign-up, KYC and identity verification, and approval flows so you control who can sell and stay compliant with payment-provider requirements.
Ecommerce Development · Online Marketplaces · AI-First · Results-Driven
Online Marketplace DevelopmentMulti-Vendor Platforms With Payouts and Seller Tools
Short answer: An online marketplace is a multi-vendor platform where many independent sellers list products or services and the platform owner takes a commission on each sale. Beyond a normal store, it needs seller onboarding, per-vendor dashboards, split payments with automatic payouts, commission handling, and search across a shared catalog. Zen in Tech builds marketplaces on platforms like Sharetribe and Medusa or as a custom headless build, typically from around $18k, with the seller tools and payment splitting built in-house in Houston.
The platform where other people do the selling
An online marketplace is a multi-vendor platform: instead of selling your own catalog, you host many independent sellers, connect them with buyers, and take a commission on each transaction. Think of the model behind Etsy, Airbnb, or a niche B2B marketplace. The value you create isn't inventory — it's the two-sided network, the trust layer, and the payments that let strangers transact safely. For a Houston founder, that means the build is as much a payments and operations product as it is a storefront.
Marketplaces carry mechanics a normal store never touches: seller onboarding and verification, per-vendor dashboards for listings and orders, split payments that route each sale to the right seller minus your commission, automatic or scheduled payouts, refund and dispute handling across vendors, ratings and reviews, and search that ranks a catalog you don't control. Get the payment splitting or payout logic wrong and you have a compliance and trust problem, not just a bug — so this is the part we design first.
Because our team builds the buyer storefront, the seller tools, and the payment-splitting and payout logic in-house here in Houston, one team owns both sides of the network and the money flow between them. There's no gap between a front-end shop and a separate payments integrator when a payout schedule or commission rule needs to change — and the platform, code, and data stay yours.
What we cover
What we build into a marketplace
Vendor dashboards & listing tools
Per-seller portals to manage listings, inventory, orders, shipping, and payouts — so vendors run their own storefront inside your platform.
Split payments & automatic payouts
Stripe Connect (or similar) routes each sale to the right seller minus your commission, with scheduled or on-demand payouts and clear ledgers.
Commission & fee logic
Flexible commission rates, listing or subscription fees, and promotional rules so you can price your take rate by category, tier, or seller.
Ratings, reviews & trust
Buyer and seller reviews, dispute and refund flows, and messaging so the two-sided trust layer that makes a marketplace work is built in.
Search & discovery across vendors
Faceted search, category browsing, and ranking across a shared multi-vendor catalog with Algolia or similar so buyers find the right listing fast.
Services
How we build your marketplace
From the two-sided model to a live platform with real payouts — here's how a marketplace build comes together with our in-house Houston team.
1. Model & payments design
We map your two-sided model, commission structure, and payout rules, then design the payment-splitting flow first because it drives compliance and trust.
2. Platform decision
We recommend a marketplace platform like Sharetribe or Medusa, or a custom headless build, based on your niche, scale, and how custom the seller tools need to be.
3. Buyer & seller experiences
We build the buyer storefront and search alongside per-vendor dashboards, so both sides of the network get an experience tuned to what they need.
4. Payments & payouts
We implement split payments and automatic payouts with Stripe Connect or similar, plus commission logic, refunds, and dispute handling across vendors.
5. Testing & launch
We test onboarding, real transactions, payout runs, and refund edge cases end to end, then launch with your first cohort of sellers onboarded.
6. Scale & ongoing support
We add seller tools, categories, and payment features as the network grows, and keep the platform and integrations healthy on a care plan.
Tools & platforms
The marketplace stack we build on
The exact toolset depends on your goals — these are the platforms we use most, and we work with whatever your team already relies on.
Marketplace platforms
SharetribeMedusacustom headless commerceCS-Cart
Split payments & payouts
Stripe ConnectPayPal for MarketplacesAdyen
Front end
Back end & data
Search & discovery
Hosting & DevOps
Chosen per project — not a fixed menu. Have a preferred tool or platform? We’ll work with it.
Built to last
Secure, Fast & Conversion-Ready
Every store is PCI-conscious with secure checkout, trusted payment gateways and encrypted customer data — built to protect shoppers and pass a security review.
We optimize for speed and conversion: fast Core Web Vitals, clean product schema and a checkout tuned to reduce drop-off, on cloud hosting that scales through your busiest sale days.
Who we work with
Industries We Build Stores For
20+ years across sectors — in Houston and internationally.
Transparent pricing
Estimate your project in seconds
Pick what you’re building for an indicative range, then request an exact quote. No email wall.
Simple prices for typical tasks
- Shopify storefrom $6k
- WooCommerce storefrom $7k
- Headless commercefrom $18k
- Store migrationfrom $4k
- Care planfrom $500/mo
Proof
700+ projects, 20+ years
See the products and growth work we’ve shipped across industries — and request a case study relevant to yours.
How we work
Fixed scope. Sprints. Working software.
- 01
Scope & fixed estimate
A short discovery call turns your idea into a clear spec and a firm range — free.
- 02
Design & architecture
UX, data model and stack chosen for your scale, not ours.
- 03
Build in sprints
Working software every 1–2 weeks — you see progress, not promises.
- 04
Launch & scale
We ship, measure and keep improving with care plans.
FAQ
Online marketplace questions
How much does it cost to build an online marketplace?
Marketplaces are more involved than a single-vendor store because of seller tools and split payments, so builds typically start around $18k and rise with the complexity of onboarding, payouts, and custom seller features. Use the estimator for an indicative range, then book a free call for a firm quote scoped to your model.
What is an online marketplace?
An online marketplace is a multi-vendor platform where many independent sellers list products or services and buyers purchase from them, with the platform owner taking a commission on each sale. Beyond a normal store, it needs seller onboarding, vendor dashboards, split payments and payouts, commission handling, and cross-vendor search.
How do payments and payouts work in a marketplace?
We implement split payments with a provider like Stripe Connect: when a buyer pays, the sale is automatically routed to the correct seller minus your commission, with scheduled or on-demand payouts and a clear ledger. Seller identity verification (KYC) is part of onboarding so the payment provider's compliance rules are met.
Should I use a marketplace platform or a custom build?
Platforms like Sharetribe or Medusa get a marketplace live faster and suit standard models; a custom headless build suits unusual mechanics, large scale, or highly custom seller tools. We recommend the path that fits your niche, budget, and how much of the experience needs to be bespoke, rather than defaulting to one.
How long does a marketplace take to build?
A focused marketplace MVP commonly takes about 3 to 4 months, since both the buyer and seller experiences plus payments and payouts have to work before launch. We build in 1 to 2 week sprints and often launch a lean version to a first cohort of sellers, then expand features as the network grows.
Can you handle seller onboarding, reviews, and disputes?
Yes. We build vendor sign-up with identity verification and approval, per-seller dashboards, buyer and seller ratings, messaging, and refund and dispute flows across vendors — the trust and operations layer that makes a two-sided marketplace actually function.
Can I set different commission rates or listing fees?
Yes. We build flexible monetization: commission rates that vary by category, tier, or seller, plus listing fees or seller subscriptions if that fits your model. You control your take rate and can adjust it as the marketplace matures.
Do you build marketplaces for businesses outside Houston?
Yes. We're based at 9800 Richmond Ave in Houston (Westchase / Energy Corridor) and build multi-vendor marketplaces for founders and companies across Texas, the USA, and internationally, with local clients able to meet us in person.
Ready to build your two-sided platform?
Book a free scoping call — we'll map your marketplace model, commission and payout logic, and give you a firm price. Marketplace builds typically start around $18k, with seller tools and split payments built in-house in Houston.
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