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Web3 & Blockchain

Crypto Wallet Development Services

Secure Crypto Wallet Development

Quecko builds wallet infrastructure that users trust with their assets. From non-custodial mobile wallets and browser extensions to MPC-powered institutional custody solutions, we engineer wallets with the security architecture, UX polish, and multi-chain support that the market demands.

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400+clients across 20+ countries
$300M+in funds generated
250+products built
150+engineers worldwide
400+clients across 20+ countries
$300M+in funds generated
250+products built
150+engineers worldwide
400+clients across 20+ countries
$300M+in funds generated
250+products built
150+engineers worldwide
400+clients across 20+ countries
$300M+in funds generated
250+products built
150+engineers worldwide
The Challenge

A wallet is the first thing users touch — and the last thing they'll forgive if it fails.

Wallet development sits at the intersection of cryptography, UX design, and multi-chain infrastructure — and getting any one of those wrong means losing users or losing funds. Most teams either build wallets with poor key management that creates security vulnerabilities, or over-engineer the security to the point where the UX becomes unusable. Quecko builds wallets that balance institutional-grade security with consumer-grade simplicity — HD key derivation, multi-party computation, biometric authentication, and seamless multi-chain support, all wrapped in interfaces that non-technical users can navigate without a tutorial.

The Solution

Engineering Production-Grade Crypto Wallet Development Services Infrastructure

1

Wallet Architecture & Key Management Design

We define the custody model (custodial, non-custodial, MPC), key derivation paths, backup/recovery flows, and multi-chain support requirements.

2

Core Wallet Development

Key generation, transaction signing, chain-specific integrations, token management, and UI/UX implementation. For mobile: native iOS/Android or cross-platform (Flutter/React Native).

3

Security Hardening & Penetration Testing

Key storage encryption validation, transaction simulation testing, phishing protection, biometric auth testing, and full penetration testing by our security team.

4

Launch & Ecosystem Integration

App store submissions, browser extension publishing, dApp ecosystem integrations, user onboarding flows, and post-launch monitoring.

Capabilities

Comprehensive Wallet Engineering

Explore our technical specialties, engineering practices, and developer skills.

Non-Custodial Wallet Development

Self-custody wallets where users own their keys. We implement HD wallet derivation (BIP-32/39/44), encrypted local key storage, seed phrase backup flows, and recovery mechanisms that balance security with usability.

Custodial & Institutional Wallet Solutions

Enterprise-grade custody infrastructure with HSM integration, multi-signature authorization, role-based access control, and full audit trails. Built for institutions that need compliance-ready asset management.

MPC Wallet Architecture

Multi-party computation wallets that eliminate single points of failure. We implement threshold signature schemes where no single party holds the complete private key — combining institutional security with seamless UX.

Multi-Chain Wallet Support

Unified wallet interfaces supporting EVM chains, Solana, Bitcoin, Cosmos, and custom networks. We handle chain-specific transaction signing, gas management, and token standard compatibility across ecosystems.

Browser Extension & Web Wallets

Chrome/Firefox extension wallets with dApp injection, transaction simulation, and phishing protection. We build extensions that integrate seamlessly with DeFi, NFT, and Web3 applications.

Wallet-as-a-Service (WaaS) Infrastructure

White-label wallet SDKs and APIs for platforms that need embedded wallet functionality — social login onboarding, gasless transactions, and session key management for Web3 apps.

Ecosystem Interoperability

Wallet Solutions

Development of custom, white-label, custodial, and non-custodial wallet infrastructure.

Digital Wallet

Consumer Asset Portal

Digital Wallet

Custom client-facing wallet applications for secure asset storage and transfers.

Development Scope

  • BIP-39 mnemonic setup
  • Quick QR-code transfers
  • EVM/Non-EVM assets feed
  • Local encrypted storage

White Label Wallet

Configurable Wallet Engine

White Label Wallet

Customizable, production-ready wallet templates for rapid rebranding and distribution.

Development Scope

  • Custom color theme setup
  • Standard API connector hooks
  • Pre-connected node cluster
  • Ready-to-publish client builds

Super App

Consolidated Web3 Ecosystem

Super App Development

Consolidated portal combining wallets, messaging, dApp browsers, and payment gateways.

Development Scope

  • In-app dApp browser sandbox
  • Built-in chat communications
  • Integrated payment routes
  • Multi-tenant feature panels

DeFi Wallet

Non-Custodial Yield Interface

DeFi Wallet

Non-custodial wallets tailored for seamless interactions with Web3 yield and liquidity platforms.

Development Scope

  • Direct yield pool connectors
  • Automated token swap routing
  • Custom gas fee adjustment
  • DEX aggregation tools

Web3 Wallet

Decentralized App Connector

Web3 Wallet

Secure browser extensions and mobile clients built to authenticate and interact with decentralized networks.

Development Scope

  • Browser extension options
  • EIP-1193 provider standards
  • Multi-network session sync
  • Secure transaction simulation

Multicurrency Wallet

Cross-Chain Asset Hub

Multicurrency Wallet

Cross-chain wallet systems supporting Bitcoin, Ethereum, EVM networks, and non-EVM chains under one seed phrase.

Development Scope

  • HD address derivation rules
  • Unified chain balance dashboard
  • Automatic token indexers
  • Custom network configuration

TRON Wallet

Optimized TRON Ecosystem

TRON Wallet

High-speed wallet architectures specialized for the TRON network, bandwidth, and energy models.

Development Scope

  • TRX resource staking controls
  • TRC-10 & TRC-20 transfers
  • Energy & Bandwidth tracking
  • SunSwap integrations

MPC Crypto Wallet

Multi-Party Custody Trust

MPC Crypto Wallet

Multi-Party Computation wallets eliminating single points of failure by splitting private keys.

Development Scope

  • Key share split generation
  • Social network key recovery
  • Threshold signature checks
  • Enterprise custody controls

AI Crypto Wallet

Intelligent Portfolio Management

AI Crypto Wallet

Smart wallet implementations with integrated AI assistants to analyze gas, portfolio trends, and automate transfers.

Development Scope

  • Automated rebalance indicators
  • Gas cost forecasts
  • Natural language command checks
  • AI transaction simulations
Execution Blueprint

From Day 1 to Day 90: What Wallet Execution Looks Like

How we take your Crypto Wallet Development Services requirements from day 1 to production delivery.

Discovery
Design & Build
Delivery & Launch
Architecture & Key DesignDay 1–15
Day 1–15 — Architecture & Key Design

Custody model selection, key derivation design, multi-chain support mapping, UI/UX wireframes, and security requirements documentation.

Core DevelopmentDay 16–45
Day 16–45 — Core Development

Key management implementation, transaction signing for target chains, token display/management, send/receive flows, and backup/recovery UX.

Security & TestingDay 46–75
Day 46–75 — Security & Testing

Penetration testing, key storage audits, transaction simulation testing, phishing protection, biometric integration, and cross-chain transaction validation.

Launch & IntegrationDay 76–90
Day 76–90 — Launch & Integration

App store/extension publishing, dApp connector integration, user onboarding optimization, monitoring setup, and documentation.

1

Day 1–15 — Architecture & Key Design

Custody model selection, key derivation design, multi-chain support mapping, UI/UX wireframes, and security requirements documentation.

2

Day 16–45 — Core Development

Key management implementation, transaction signing for target chains, token display/management, send/receive flows, and backup/recovery UX.

3

Day 46–75 — Security & Testing

Penetration testing, key storage audits, transaction simulation testing, phishing protection, biometric integration, and cross-chain transaction validation.

4

Day 76–90 — Launch & Integration

App store/extension publishing, dApp connector integration, user onboarding optimization, monitoring setup, and documentation.

Technology

Technologies We Master

Tools, frameworks, and protocols we use to build secure and scalable solutions.

Key Management

BIP-32/39/44BIP-32/39/44
ECDSAECDSA
EdDSAEdDSA
Shamir's Secret SharingShamir's Secret Sharing
MPC (TSS)MPC (TSS)

Mobile

Swift (iOS)Swift (iOS)
Kotlin (Android)Kotlin (Android)
FlutterFlutter
React NativeReact Native

Web/Extension

ReactReact
TypeScriptTypeScript
Chrome Extension APIsChrome Extension APIs
Web3ModalWeb3Modal
WalletConnectWalletConnect

Chains

EthereumEthereum
PolygonPolygon
ArbitrumArbitrum
OptimismOptimism
SolanaSolana
BitcoinBitcoin
CosmosCosmos
BSCBSC
AvalancheAvalanche
custom chainscustom chains

Security

HSM integration (AWS CloudHSM, Azure HSM)HSM integration (AWS CloudHSM, Azure HSM)
Secure EnclaveSecure Enclave
biometric APIsbiometric APIs

Infrastructure

Node.jsNode.js
GoGo
PostgreSQLPostgreSQL
RedisRedis
AWS KMSAWS KMS
Our Edge

Your Wallet Guards Every Asset Your Users Own. We Build It Like That Matters.

Our wallet engineers understand HD derivation, threshold signatures, and key management at a cryptographic level — not just at an API level.

Cryptography-First Engineering

Our wallet engineers understand HD derivation, threshold signatures, and key management at a cryptographic level — not just at an API level.

Multi-Chain Native

We don't bolt on chain support as an afterthought. Our wallets are architected for multi-chain from day one — EVM, Solana, Bitcoin, Cosmos, and beyond.

Security Without UX Sacrifice

Institutional-grade key management wrapped in interfaces that non-crypto-native users can navigate. Security and usability aren't trade-offs — they're both requirements.

250+ Products Shipped

From consumer mobile wallets to institutional MPC custody, we've built wallet infrastructure trusted with real assets at scale.

Our Work

Our Projects

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Social Proof

“With hard work, determination, and an amazing team at Quecko, we can overcome any obstacle and achieve anything we set our minds to.”

Mateen O Dawood

Stable33 Protocol
Engagement

How We Collaborate

Dedicated Wallet Pod

Full-time mobile/web engineers, cryptography specialists, and security testers working as your wallet development team.

Project-Based Delivery

End-to-end wallet development from architecture to app store launch, with security audit included.

Wallet-as-a-Service SDK

White-label wallet infrastructure delivered as an embeddable SDK for your existing platform.

FAQ

Frequently Asked Questions

We build non-custodial mobile wallets, custodial enterprise wallets, MPC wallets, browser extensions, hardware wallet integrations, and embedded wallet SDKs (Wallet-as-a-Service). We support all major chains and token standards.

Depending on the custody model, we implement encrypted local storage with Secure Enclave/Keystore, HSM-backed custody, or MPC threshold signatures. Every implementation undergoes penetration testing and security audit.

Yes. Our wallets support EVM chains (Ethereum, Polygon, Arbitrum, etc.), Solana, Bitcoin, Cosmos ecosystem chains, and custom networks — all from a unified interface with chain-specific transaction signing.

Yes. We build native iOS and Android wallets, cross-platform wallets (Flutter/React Native), Chrome/Firefox browser extensions, and web-based wallets — all sharing a common key management backend.

Blogs

Latest Stories from Quecko

Ready to build a wallet your users will trust?

Whether you need a consumer mobile wallet, institutional MPC custody, or an embedded wallet SDK — Quecko's engineers build wallet infrastructure with the security and UX your users and assets deserve.

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