Security by design
Transaction simulation before signing, explicit approval display, signature verification, and no private key exposure anywhere in the stack.
Blockchain Development Company in Bangalore
dApps, DeFi interfaces, smart contract integration, wallet connectivity, and on-chain data indexing. We build decentralised applications that users trust with their assets, because we treat security as a first-class engineering requirement.
EVM + Solana
Chain support
300+
Wallets supported
Multi-chain
Architecture approach
Security first
Engineering standard
Type-safe smart contract integration with viem
Multi-wallet support via WalletConnect v2
The Graph subgraph development
Transaction lifecycle UX management
DeFi protocol interface development
Wallet-agnostic
WalletConnect v2 + RainbowKit support for 300+ wallets. No MetaMask dependency that excludes mobile users.
Gas-efficient UX
Gas estimation with buffers, batch transaction design, and clear gas cost display before every user action.
Multi-chain ready
Chain-agnostic abstractions that support Ethereum, Polygon, Base, Arbitrum, and other EVM chains without architecture rewrites.
Type-safe contracts
Typed contract interactions with viem + generated ABIs, eliminating a class of runtime errors from contract integration code.
On-chain monitoring
Event monitoring, transaction success tracking, and anomaly detection for production dApps handling user funds.
Frontend & Wagmi
- Next.js
- React
- wagmi v2
- viem
- RainbowKit
- ConnectKit
Smart Contract Layer
- Solidity
- Hardhat
- Foundry
- OpenZeppelin
- Ethers.js
- ABI types
Data & Indexing
- The Graph
- Moralis
- Alchemy
- QuickNode
- Infura
- Dune Analytics
Wallets & Auth
- MetaMask
- WalletConnect v2
- Privy
- Dynamic
- Magic
- SIWE
Chains
- Ethereum
- Polygon
- Base
- Arbitrum
- Optimism
- Solana
Storage & Infra
- IPFS
- Arweave
- Pinata
- NFT.Storage
- Vercel
- Railway
01
Protocol Discovery
2–3 days
Target chain analysis, smart contract interface review, wallet strategy, and data access pattern mapping. Security considerations documented upfront.
02
Architecture Design
2–4 days
Frontend stack selection (Next.js + Wagmi), data layer design (The Graph vs. RPC), wallet strategy, and smart contract integration approach.
03
Smart Contract Integration
1–2 weeks
ABI integration, type-safe contract interactions, gas estimation, transaction lifecycle management, and proper error handling for on-chain failures.
04
Frontend Build
2–4 weeks
dApp frontend with wallet connection, transaction flows, confirmation UX, and real-time data updates. Security-conscious implementation at every step.
05
Testnet Validation
1 week
End-to-end testing on testnet, transaction flows, wallet disconnection handling, network switch handling, and gas spike scenarios.
06
Mainnet Launch
1–2 days
Mainnet deployment with monitoring for on-chain events, transaction failures, and contract interaction errors. Launch monitoring period.
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
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.
Retail loyalty consortium
- Challenge
- On-chain rewards without forcing all users to self-custody wallets.
- Simplileap solution
- ERC-1155 on Polygon, WalletConnect, and custodial fallback pool.
- Outcome
- 48,000 wallets in first campaign month; zero critical audit findings.
DAO tooling startup
- Challenge
- Governance token needed audit-ready test coverage and access controls.
- Simplileap solution
- Slither analysis, TimelockController, and expanded Hardhat suite.
- Outcome
- Mainnet on schedule; no post-deploy contract incidents in 90 days.
Currency
Package
Ideal for
Investment
Includes
Package
Smart contract development
Ideal for
Token & NFT projects
Investment
₹3L – ₹10L
Includes
- Solidity
- ERC-20 / ERC-721 / TRC-20
- Unit tests
- Testnet + mainnet deploy
Package
DApp / Web3 product
Ideal for
Consumer & B2B Web3
Investment
₹10L – ₹30L
Includes
- Frontend + contracts
- Wallet connect
- Fireblocks custody optional
- Indexer integration
Package
Custody & API integration
Ideal for
Fintech
Investment
Scoped per integration
Includes
- Fireblocks patterns
- Webhook reconciliation
- Multi-sig flows
- Compliance hooks
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
- LLPIN
AAU-8582
- Startup India
DIPP83124Karnataka Startup
- Founded
November 2020
- Office
Residency Rd, Bengaluru, India
Common questions about Web3 development
EVM-compatible chains (Ethereum, Polygon, Base, Arbitrum, Optimism, BNB Chain) and Solana. Multi-chain within a single dApp is supported through chain-agnostic abstractions.
We conduct internal security reviews on all contracts we integrate with. For contracts we write, we recommend third-party audits for any contract handling significant value before mainnet deployment.
No, we implement WalletConnect v2 which supports 300+ wallet apps. For mainstream audiences, we can implement embedded wallets (Privy, Dynamic) that use email/social login without requiring any wallet installation.
Yes, we build protocol interfaces for existing deployed contracts. We need the contract ABIs, deployment addresses, and protocol documentation to scope the integration.
The Graph subgraphs for indexed historical data (fast, cost-free queries), Moralis Streams or WebSocket subscriptions for real-time events, and polling with SWR/React Query for current state that changes periodically.
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