PumpTap Crypto Wallet

Most crypto wallets force users to choose between simplicity and capability – basic wallets support 1-2 chains while power-user wallets overwhelm newcomers with 50+ settings screens. PumpTap needed a wallet that supports 20+ EVM-compatible chains with one-tap network switching and gas estimation, yet gets first-time users from download to their first transaction in under 3 minutes. The security constraint: biometric authentication and hardware key support with zero unauthorized access incidents – non-negotiable for a platform handling 100,000+ daily transactions.

The team aimed to:

• Enable secure storage and transfer of crypto assets across multiple blockchains.
• Provide real-time transaction status and balance updates.
• Simplify interactions with decentralized applications.
• Build a scalable foundation to support a growing user base.

We brought proven expertise in high-load Web3 systems and blockchain integrations. Our architecture streams blockchain events through Apache Kafka with Flink updating balances, transaction statuses and notifications in real time – so users always see current on-chain state without manual refreshes. We built a modular chain adapter system that integrates new networks and token standards rapidly, plus gas optimization through transaction batching and EIP-1559 fee prediction that reduces user costs by 15-30%.

The backend is built on Java and Spring Boot, providing a reliable foundation for wallet services, transaction management and API integrations. Apache Kafka streams blockchain events and user actions, while Apache Flink processes these streams in real time to update balances, transaction statuses and notifications. This setup ensures that users always have access to the most up-to-date on-chain information without any delays.

PumpTap features a sleek web-based interface built with React and NextJS, prioritizing clarity and user-friendliness. The UI emphasizes quick navigation, a detailed transaction history and straightforward asset management for both new and experienced crypto users.

Apache Cassandra stores wallet metadata, user settings and historical activity at scale. Apache Pinot powers real-time analytics for transaction monitoring and system health. Redis serves as a low-latency cache for balances and session data. The entire platform runs on Kubernetes, using Istio for traffic management and is deployed on AWS to ensure security, scalability and high availability.

PumpTap enables users to manage multiple assets across multiple blockchains from a single wallet without switching tools.

All transactions are monitored and updated in real time, providing immediate feedback on confirmations, fees and status.

The wallet connects to decentralized applications via secure APIs, enabling users to interact with DeFi, NFTs and other Web3 services directly from PumpTap.

We designed a wallet onboarding flow where users set up and make their first transaction in under 3 minutes. Our wallet supports 20+ EVM-compatible chains with one-tap network switching and gas estimation – proving that multi-chain access does not have to mean multi-step complexity.

We built infrastructure that processes 100,000+ transactions daily with 99.9% uptime. Our biometric authentication and hardware key support achieved zero unauthorized access incidents since launch – the security track record that builds the trust a daily-use crypto wallet requires.

We engineered a modular architecture that supports rapid integration of new chains and token standards. Our gas optimization reduces user costs by 15-30% through transaction batching and EIP-1559 fee prediction – turning a necessary cost into a competitive advantage that drives wallet adoption.