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// Build

dApp Development

Decentralised applications combine the trust of blockchain with the experience quality of modern web applications. We build dApps that are secure, performant, and usable, not just functional on-chain.

// Key benefits

What makes this service valuable

Smart contract integration

We connect your frontend to on-chain contracts using ethers.js or viem, with robust error handling, gas estimation, and transaction lifecycle management.

Multi-wallet support

MetaMask, WalletConnect, Coinbase Wallet, and Phantom. We implement wallet connection using RainbowKit or wagmi with a consistent UX across all connector types.

Multi-chain architecture

Ethereum, Polygon, Base, Arbitrum, Solana, and others. We design dApp architecture for multi-chain operation with consistent UX across network switches.

// Details

Building the decentralised web layer

dApp development requires expertise in both traditional web development and blockchain protocols. Most dApp UX problems come from treating Web3 as just an API, without understanding gas, transaction confirmation times, and wallet state management.

We architect dApps with proper loading states for on-chain actions, clear transaction lifecycle communication, and graceful degradation when wallets are not connected.

// What this includes

  • React / Next.js frontend with Wagmi v2 and Viem
  • Multi-wallet connection (RainbowKit)
  • Smart contract interaction and ABIs
  • Transaction lifecycle management
  • The Graph or Moralis for on-chain data indexing
  • IPFS / Arweave for decentralised storage
  • Multi-chain network support

// Deliverables

What you receive

Every engagement produces clear, documented deliverables. Here is exactly what is included in our dapp development service.

  • 01Production dApp frontend (Next.js + Wagmi)
  • 02Smart contract integration and ABI documentation
  • 03Multi-wallet connection implementation
  • 04On-chain data indexing setup
  • 05Test suite for contract interactions
  • 06Deployment and CI/CD configuration

// In practice

How dapp development engagements run

We typically anchor the first sprint on smart contract integration. Decentralised applications combine the trust of blockchain with the experience quality of modern web applications. We build dApps that are secure, performant, and usable, not just functional on-chain. On Residency Road engagements, discovery maps dependencies and success metrics before sprint one. Architecture choices, API contracts, and observability hooks are documented before the first production deploy.

// Stack & frameworks

Stack we use for this

Smart contracts

  • Solidity / Hardhat
  • OpenZeppelin
  • Audit prep
  • Testnet deployment

dApps

  • ethers.js / wagmi
  • Wallet connect
  • IPFS metadata
  • Indexers

Custody & APIs

  • Fireblocks patterns
  • Tatum integrations
  • Webhook reconciliation
  • Multi-sig flows

// Delivery

Simplileap execution framework

01

Architecture mapping

Dependencies, API contracts, compliance constraints, and performance budgets documented before sprint one.

02

Secure sprints

Two-week increments with GitHub access, demo recordings, and QA checkpoints, client visibility at every stage.

03

QA & handover

Automated tests on critical paths, security review, runbooks, and knowledge transfer to your team.

// Proof

Real deployments from Bangalore

Retail loyalty consortium

Challenge
Reward minting required multisig upgrades and metadata pinning.
Simplileap solution
ERC-1155 contracts, Timelock, and IPFS + CDN fallback.
Outcome
48k wallets minted; external audit passed.
Read full case study ›

// Engagement models

How teams engage us

Currency
PackageIdeal forInvestmentIncludes
Smart contract developmentToken & NFT projects₹3L – ₹10L
  • · Solidity
  • · ERC-20 / ERC-721 / TRC-20
  • · Unit tests
  • · Testnet + mainnet deploy
DApp / Web3 productConsumer & B2B Web3₹10L – ₹30L
  • · Frontend + contracts
  • · Wallet connect
  • · Fireblocks custody optional
  • · Indexer integration
Custody & API integrationFintechScoped per integration
  • · Fireblocks patterns
  • · Webhook reconciliation
  • · Multi-sig flows
  • · Compliance hooks

// Company and service positioning

Company and Service positioning is reviewed for production delivery standards by Harsha Parthasarathy (Co-Founder, Strategy & Operations 24+ years IT veteran, IBM, Global Delivery, Program Management) and Keshav Sharma (Co-Founder, Engineering and Lead Architect, Full-stack engineering, product delivery and technical standards).

// Verified entity

Simplileap Digital LLP

// Recognition

Featured in QuickNode Feature Fridays

CIN

AAU-8582

Startup India

Founded

November 2020

Office

Residency Rd, Bengaluru, India

// FAQ

Common questions about dapp development

What blockchain networks do you build for?+

We build for EVM-compatible chains (Ethereum, Polygon, Base, Arbitrum, Optimism, BNB Chain) and Solana. Multi-chain support is available within a single dApp using chain-agnostic abstractions.

Do you audit smart contracts?+

We conduct internal security reviews but recommend independent third-party audits for production contracts handling significant value. We work with audit firms and can facilitate that process.

Ready to get started with dapp development?

Share your requirements with our team. We respond within one business day with a clear plan from discovery to delivery.