escrow

Production-grade car-pooling platform with an on-chain escrow payment path. Native Android + iOS clients, Java/Struts2 REST API, Solidity RideEscrow contract, and a zero-dependency JSON-RPC verifier — no web3j bloat.

Backend Java Spring Boot Connected with smartcontracts

Secure Skill Exchange Platform with Wallet & Escrow System built using Spring Boot, JWT, RBAC, MySQL, and Docker. Focused on transactional safety and real-world backend workflows.

Escrow payment platform with double-entry ledger, idempotent money APIs, pessimistic locking, and a transactional outbox — Spring Boot 3 + PostgreSQL

Marketplace de plantão técnico para incidentes críticos, com matching, escrow, chat e reviews em Spring Boot, PostgreSQL e Next.js.

A Java-based console application simulating a secure Escrow / Middleman online payment system. Implementing core OOP principles (Inheritance, Polymorphism, and Encapsulation) with multi-role access control for Buyers, Sellers, and Admins.

Simple application for interacting with Sberbank via API.

Conditional settlement platform.