Multi-Vendor Marketplace Development
A marketplace is two products, and the hard part sits between them
Buyers won't come without listings and vendors won't list without buyers, so the build has to earn its way out of that standoff. We work on the parts that decide it: onboarding a seller in minutes, splitting a payment three ways and paying it out on schedule, holding funds until delivery, resolving the order that went wrong, and ranking results so the good vendors surface.
Signing up the first vendors is harder than writing the code
A marketplace that launches empty on both sides stays empty. So the early build is shaped around whichever side you can seed first — bulk-importing a vendor's existing catalogue, seeding one city or one category deeply rather than the whole country thinly, and letting the platform fulfil the first orders itself if that is what keeps buyers coming back.
- Vendor onboarding with catalogue import and identity checks
- Split payments, escrow holds and scheduled payouts
- Commission, fee and refund rules the finance team can edit
- Search and ranking that new vendors can break into
- Dispute, cancellation and chargeback flows built in, not bolted on
The six systems every marketplace ends up needing
Vendor Onboarding & Catalogue
Sign-up with document and bank verification, CSV or API catalogue import, a category taxonomy vendors can actually map their SKUs onto, and moderation queues for listings that need a human eye.
Buyer & Seller Apps
Android and iOS builds for both sides of the market. Sellers live in the app more than buyers do, so notifications, order actions and offline tolerance matter more there than polish.
Web Storefront & Discovery
Server-rendered category and listing pages that indexable search can reach, with faceted filtering that stays fast as the catalogue grows past what a single query can scan.
Admin Console & Vendor Panel
The screens your operations team lives in: vendor approvals, commission and fee rules, refunds and credit notes, listing takedowns, and a payout run that reconciles against the ledger.
Split Payments, Escrow & Payouts
One buyer charge split across vendor, platform fee and tax, held until the delivery condition is met, then released on a payout schedule — with refunds and chargebacks unwinding it correctly.
Orders, Fulfilment & Returns
Multi-vendor carts that split into separate orders, carrier integration and tracking, partial cancellations, and a returns path that decides who absorbs the cost before the argument starts.
What a Marketplace Runs On
What we reach for most often. The choice per project follows the shape of the load — catalogue size, write volume at checkout, how much of the traffic is search — and what your own team can maintain after handover.
Frontend & Web
4 tools
- React
- Next.js
- Angular
- TypeScript
Mobile
4 tools
- Flutter
- React Native
- Swift
- Kotlin
Backend, Database & Cloud
4 tools
- Node.js
- Python
- MongoDB
- AWS
What building it with us actually changes
Marketplaces rarely come apart on the feature the pitch deck led with. They come apart on money that can't be reconciled, vendors who abandon onboarding halfway, and a results page nobody trusts. That is where we put the effort.
Both sides designed together
The seller experience gets the same attention as the buyer one. A vendor who can't fix a price, split a shipment or understand a payout statement stops listing, and no amount of buyer traffic fixes that.
Money on a ledger, not in a table
Every charge, fee, refund and payout is a double-entry movement you can replay. Card data stays inside the gateway's scope, and payout files reconcile against what the platform thinks it owes.
Three interfaces, one system
Buyer, seller and operations each get a real interface rather than one screen with permissions bolted on. The admin console is designed for the people who use it eight hours a day.
Shipped in slices you can launch
A category or a city at a time, each slice complete enough to take live orders. That is what gives you real vendor feedback before the expensive parts are locked in.
Support that includes operations
Post-launch work is rarely only bugs. It is a new payout schedule, a dispute policy change, a tax rule, a vendor tier — the running changes a live market keeps asking for.
Load that arrives all at once
Marketplace traffic is spiky and lopsided: one campaign, one seller, one category. We size read paths, search indexes and payout jobs for the peak, not the average.
Where a marketplace wins or loses people
Six things buyers judge you on within a session, and sellers judge you on within a week. Each one is a system with its own failure modes, not a checkbox.
Search & Ranking
Relevance is only half of it. Ranking also decides which vendor gets the sale, so it needs exploration for new listings, penalties for cancellations and late dispatch, and rules you can explain to a seller who asks why they dropped.
Recommendations From Your Own Signals
Co-views, repeat purchases and basket pairs from your data — with cold-start fallbacks for the listings that have no history yet, which on a young marketplace is most of them.
Notifications That Carry State
Order placed, payment captured, dispatch due, payout released. Delivered across push, email and SMS with retries and a preference layer, because a missed dispatch alert becomes a refund.
Reviews Tied to Real Orders
Ratings attached to a completed transaction, seller responses, and review-fraud checks. Also the part nobody plans for: how a vendor disputes a review and what happens while it's contested.
Multi-Currency & Locale
Prices held in minor units with the currency, rounding and tax rules applied per region, plus translated content and right-to-left layouts where you need them. Retrofitting this later is expensive.
Messaging With a Dispute Trail
Buyer-seller chat that support can join, with attachments and an immutable timeline. When a claim is raised, that thread is the evidence the resolution rests on.
Models We Build For
Retail & product marketplaces
Many sellers, one catalogue. The work is in taxonomy, duplicate listings and buy-box style ranking.
Service & booking marketplaces
Inventory is somebody's calendar. Availability, cancellation windows and no-shows drive the design.
B2B & wholesale
Negotiated pricing, quotes, purchase orders, tax registration checks and payment terms instead of cards.
Rentals & equipment hire
Deposits, damage claims, date-range availability and returning the item in the state it left.
Food & grocery delivery
Short order lifecycles, live courier state, substitutions and refunds settled within the hour.
Freelance & talent platforms
Milestones and escrow, scope disputes, and reputation that travels with the person, not the listing.
From First Conversation to First Payout
NDA and scoping
We sign an NDA before you walk us through the idea, then agree what the first launchable slice is and what it deliberately leaves out.
Market and money model
Who the two sides are, which one you can seed, and how money moves: commission, fees, taxes, escrow conditions, payout schedule, refund rules.
Flows and interface design
Wireframes for all three surfaces — buyer, seller, operations — then visual design. Seller and admin screens are designed, not left to a component library.
Build in launchable slices
Two-week iterations against a working environment, each ending with something you could put in front of a real vendor.
Testing, including the money paths
Functional and load testing, plus explicit runs at the cases that hurt: partial refunds, chargebacks, failed payouts, double dispatch, duplicate listings.
Launch, then operate
Vendor migration, monitoring on the transaction and payout jobs, and a support engagement that covers policy and rule changes as well as defects.
Got questions?
By picking a side and going narrow. Usually that means seeding supply first, because listings are easier to acquire than demand: importing vendors' existing catalogues, concentrating on one city or one category until it looks full, and in some cases having the platform itself fulfil early orders so buyers get a reliable experience before there are enough sellers to make that reliable on its own. The product work follows that choice — bulk import and vendor tooling come early, broad discovery comes later.
Vetted by the vendor, not just by us.
A partner badge is granted, not claimed. These came from Odoo.
- Odoo Partner
- Odoo Certified Consultants
Tell us what you're
trying to build
The problem, who it's for, and where you are now. That's enough for us to come back with something useful.
hello@aryavos.com
HQ
Noida, India & New York, USA
What happens after you send it
A developer reads it, not an auto-responder. Expect questions about scope and constraints first, then a suggested way to start.