jStack

Startups

Launch financial products without building the entire stack first.

Use modular APIs for payments, wallets, cards, accounts and digital services so your team can focus on product and customer experience.

Talk to an Expert Explore Startup Infrastructure ↓
quickstart.tssandbox
// Create a wallet and collect a payment
const wallet = await jstack.wallets.create({
  owner_id: "usr_10482",
  currency: "USD",
});

const intent = await jstack.payments.create({
  amount: 4200,
  currency: "USD",
  destination: wallet.id,
});

Industry Challenge

Startups need speed without creating infrastructure debt.

  • Limited engineering teams and runway
  • Multiple financial integrations to maintain
  • Fast launch and iteration requirements
  • New business models still being tested
  • Scaling across products and markets
  • Replacing infrastructure later is expensive

What jStack Enables

Pick the modules your MVP actually needs.

Key Use Cases

From first prototype to production volume.

  1. 01Pick modules
  2. 02Integrate APIs
  3. 03Test in sandbox
  4. 04Launch MVP
  5. 05Add products over time

  • Fintech MVP

    Launch accounts, payments, wallet or card functionality faster.

  • Marketplace

    Add payment collection, seller balances and payouts.

  • Embedded Finance

    Put financial services inside an existing product.

  • Card Product

    Launch virtual or prepaid card experiences.

  • Consumer Wallet

    Create a stored-value or payment ecosystem.

  • Digital Marketplace

    Offer bills, airtime, gift cards or digital products.

Startup Architecture

Your product on top, rails underneath.

Product

  • Startup App / Platform
  • jStack APIs

Choose Modules

  • Payments
  • Wallet
  • Cards
  • Accounts
  • Payouts

Connected

  • Financial Rails
  • Supported Providers

Capabilities

Production infrastructure from day one.

  • Sandbox Environment
  • REST APIs
  • Webhooks
  • Wallet Balances
  • Payment Collection
  • Payouts
  • Virtual Accounts
  • Card Issuing
  • Ledger
  • Fees & Pricing Rules
  • Reporting
  • Reconciliation

Relevant jStack Products

The jStack products behind this solution.

Most teams begin with Payment Gateway and Wallet, then add Card APIs or BaaS as the product grows.

Business Benefits

Outcomes for early-stage teams.

  • Faster MVP

    Ship a working financial product sooner.

  • Lower Complexity

    One integration instead of many vendors.

  • Modular Architecture

    Start small, expand module by module.

  • API-First Development

    Sandbox, docs and webhooks from day one.

  • Scale Without Rebuilding

    The same core carries production volume.

  • Add Products Over Time

    Cards, accounts and payouts when you need them.

Who It's For

For teams building financial products fast.

  • Fintech Startups
  • SaaS Platforms
  • Marketplaces
  • Consumer Apps
  • Mobility Platforms
  • Digital Commerce Startups

Related Solutions

Related Industries

Build your product. Plug in the financial infrastructure.

Talk to our team about modules, sandbox access and launch timelines.

Build with jStack