Paydece · 2022–2025

I designed the entire platform so that trading on blockchain feels trustworthy.

Skip the walkthrough

  1. The P2P flow: posting an ad.

    I improved the ad-posting experience to guide newcomers without getting in the way of experienced users.

    before · one form
    Paydece, before: a single form to create the ad
    before · one form after · four steps
    Paydece, posting an ad, step 1 of 4: choose between a buy ad and a sell ad
    Paydece, posting an ad, step 2 of 4: the network, the digital asset, the currency and the payment methods
    Paydece, posting an ad, step 3 of 4: the available amount, the price and the offer limits
    Paydece, posting an ad, step 4 of 4: the preview before posting
  2. May 2023500 usersUSD 1.5M traded

  3. Communities.

    I proposed and designed them: groups with their own identity and reputation, for trading with people you know. It was the feature that brought in the most users.

    Paydece: the community finder, each one on a card with its description, social links, members and how much it has traded
  4. July to December 2023more than 3,300 new usersand close to 30% of the financial growth (USD 1.8M)

  5. Ad management.

    Every ad, active or paused, with its history in view: more control for those who post every day.

    Paydece: the My ads screen, with every ad sorted by status
  6. May 20246,000 usersUSD 7.47M traded

  7. P2P as an SDK.

    The entire platform in 900 × 600 px and unbranded, so other platforms can add it to their own.

    Paydece: the P2P platform as an unbranded SDK, to add it to another platform

  8. Point of Cash.

    Face-to-face exchanges: how to meet up while protecting each person's location.

    Paydece, Point of Cash: a map with the meeting points and the list of ads
  9. April 20257,195 usersUSD 23M traded
  • RoleUX/UI Designer
  • Timeline2 years and 11 months
The problem

Exchanging pesos or dollars for digital assets with a stranger.

One person posts an ad and another one takes it.

What I did

The interfaces, the documentation and the visual QA.

The result

A blockchain platform that feels easy for thousands of users.

From 500 to more than 7,000 users between May 2023 and April 2025.

Tools: Figma, Notion and Slack.

The P2P flow

The trade, step by step and with chat.

Before

After

The chatIt helped prevent many scams and made the exchanges more credible.“The seller put the crypto in escrow.”“You have transferred the fiat.”“The seller released the crypto; the transaction was completed successfully.”

Communities

Trade with people from your group.

To build trust and create incentive programs, each community shows who its members are and how much it trades.

After launch

×3

interaction between users. Well-known communities started using them.

Paydece: the “My community” screen, with the members, all-time and monthly volume, social links and each member's activity
For the community leader, every member's performance data.
Paydece: the top of the marketplace, with the “Best community” card and the “Communities: members only” filter
In the marketplace: a featured community, with its link to join, and the filter to trade only among members.

Trust, screen by screen.

In 2023, exchanging money with a stranger on blockchain took a lot of trust. I built it with clear states, one action per step, the chat inside the trade, and communities. Users praised every improvement and pointed out how easy everything was to understand.

I made my first USDT purchase and didn't have to ask anything 🙌

🙌 8👍 5

The built-in chat is great for coordinating and speeding up the transaction.

🔥 6

I was nervous about exchanging money on blockchain, but here it was really easy.

❤️ 12

Every update gets clearer. Congrats to the team 👏

👏 9
Recreated messages