Blockchain Development Services

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SemBricks builds blockchain applications including wallets, trading tools, DeFi integrations, smart contracts, and on-chain automation for EVM and Solana.

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Discover our full range of blockchain development services services. Click any topic below to learn more about how SemBricks can help.

  • Crypto Wallet Development — SemBricks builds custom cryptocurrency wallets for desktop, browser, and mobile. Secure key management, multi-chain support, and beautiful UX.
  • Desktop Crypto Wallet Development — SemBricks develops secure desktop crypto wallets with C# or Rust. Local key storage, transaction signing, and portfolio overview.
  • Browser Extension Wallet Development — SemBricks builds browser extension crypto wallets like MetaMask alternatives. dApp connectivity, transaction approval, and secure key management.
  • Mobile Crypto Wallet Development — SemBricks develops mobile crypto wallets for iOS and Android. Biometric security, WalletConnect support, and seamless token management.
  • Hardware Wallet Signing Integration — SemBricks integrates hardware wallets (Ledger, Trezor) into your applications. Secure transaction signing without exposing private keys.
  • On-Chain Trading Tools — SemBricks builds on-chain trading tools for DEX trading, portfolio tracking, P&L calculation, and tax reporting across blockchains.
  • On-Chain Trading Bot Development — SemBricks develops on-chain trading bots for DEX sniping, arbitrage, and automated swaps. MEV-aware, gas-optimized, and configurable.
  • DEX Integration Development — SemBricks integrates decentralized exchanges into your applications. Uniswap, PancakeSwap, Jupiter, and more with optimal routing.
  • Crypto Portfolio Tracker Development — SemBricks builds crypto portfolio trackers that aggregate holdings across wallets and exchanges. Real-time valuations and performance analytics.
  • Crypto P&L Calculator Development — SemBricks develops P&L calculators for crypto traders. Track realized and unrealized gains across DEX swaps, CEX trades, and DeFi positions.
  • Crypto Tax Reporting Software — SemBricks builds crypto tax reporting tools that calculate taxable events across chains. Generate reports compliant with your jurisdiction's requirements.
  • EVM Development Services — SemBricks builds EVM-based solutions: smart contract tooling, event listeners, custom RPC tools, and NFT infrastructure for Ethereum and L2 chains.
  • Smart Contract Tooling — SemBricks builds tooling around EVM smart contracts. Deployment scripts, verification, interaction UIs, and monitoring dashboards.
  • Blockchain Event Listener Development — SemBricks builds event listener services that monitor smart contract events and trigger actions. Real-time indexing and webhook notifications.
  • Custom RPC Tooling — SemBricks develops custom RPC tooling for EVM chains. Load balancers, caching layers, and specialized endpoints for your blockchain infrastructure.
  • NFT Tooling Development — SemBricks builds NFT tooling for minting, metadata management, marketplace integration, and collection analytics on EVM chains.
  • Solana Development Services — SemBricks builds on Solana: program clients, RPC tooling, token infrastructure, and NFT platforms leveraging Solana's high throughput.
  • Solana Program Client Development — SemBricks develops client applications for Solana programs. TypeScript and Rust SDKs, transaction builders, and instruction wrappers.
  • Solana RPC Tooling — SemBricks builds Solana RPC infrastructure: WebSocket subscriptions, geyser plugins, and custom RPC proxies for high-performance applications.
  • Solana Token Tooling — SemBricks builds SPL token tooling: token creation, distribution, vesting schedules, and token account management on Solana.
  • Solana NFT Development — SemBricks develops NFT solutions on Solana using Metaplex and custom programs. Minting, collection management, and marketplace integration.
  • DeFi Development Services — SemBricks builds DeFi tools: yield dashboards, liquidity monitoring, and position management for decentralized finance protocols.
  • DeFi Yield Dashboard Development — SemBricks builds yield dashboards that track farming positions, APY, and rewards across DeFi protocols. Multi-chain, real-time, and comprehensive.
  • DeFi Liquidity Monitoring — SemBricks develops liquidity monitoring tools for DeFi pools. Track TVL, depth, and price impact across AMMs and lending protocols.
  • DeFi Position Management Tools — SemBricks builds position management tools for DeFi. Monitor, adjust, and automate your lending, farming, and LP positions across protocols.
  • On-Chain Automation — SemBricks builds on-chain automation systems: keepers, automated transactions, and scheduled contract interactions that run reliably.
  • Multi-Chain Development — SemBricks builds multi-chain applications that work across Ethereum, Solana, and other blockchains. Unified interfaces for cross-chain operations.
  • Blockchain Data Indexing — SemBricks builds blockchain data indexing solutions. Index on-chain events, transactions, and state changes into queryable databases.
  • Crypto Tax Software Development — SemBricks develops crypto tax software that classifies transactions and calculates obligations. Support for DeFi, NFTs, and multi-chain activity.
  • Account Abstraction Development — SemBricks builds account abstraction solutions using ERC-4337. Smart accounts, bundlers, paymasters, session keys, and gasless transaction flows.
  • ERC-4337 Implementation — SemBricks implements ERC-4337 account abstraction for your dApp. UserOperation flow, EntryPoint integration, and compliant smart accounts.
  • Smart Account Development — SemBricks develops smart contract accounts with modular validation, recovery mechanisms, and custom execution logic.
  • Bundler Development — SemBricks develops and operates ERC-4337 bundler infrastructure. Reliable UserOperation submission with MEV protection and gas optimization.
  • Paymaster Development — SemBricks develops paymaster contracts for gas sponsorship and ERC-20 gas payment. Enable gasless transactions for your users.
  • Session Key Implementation — SemBricks implements session keys for account abstraction. Grant temporary, scoped permissions without repeated wallet approvals.
  • Social Recovery Implementation — SemBricks implements social recovery for smart accounts. Guardian-based wallet recovery without seed phrases for better user experience.
  • Gasless Transaction Implementation — SemBricks implements gasless transaction flows for your dApp. Users transact without holding ETH through paymaster sponsorship or meta-transactions.
  • EIP Standards Implementation — SemBricks implements Ethereum Improvement Proposals (EIPs) in your applications. From token standards to signing schemes, we build to spec.
  • EIP-712 Typed Data Signing — SemBricks implements EIP-712 structured data signing for readable transaction approvals and off-chain signature verification.
  • ERC-721 NFT Implementation — SemBricks implements the ERC-721 non-fungible token standard for unique digital assets, collectibles, and proof of ownership.
  • ERC-1155 Multi-Token Implementation — SemBricks implements ERC-1155 multi-token contracts for efficient management of fungible and non-fungible tokens in a single contract.
  • EIP-1559 Fee Market Integration — SemBricks integrates EIP-1559 fee market mechanics into your applications. Dynamic base fee handling, priority fees, and gas estimation.
  • EIP-2612 Permit Implementation — SemBricks implements EIP-2612 permit for gasless ERC-20 approvals. Users sign permits off-chain, eliminating separate approval transactions.
  • EIP-3009 Transfer With Authorization — SemBricks implements EIP-3009 for authorized token transfers using off-chain signatures. Delegated transfers without prior approval.
  • EIP-4337 Account Abstraction Standard — SemBricks implements the full EIP-4337 stack: smart accounts, bundlers, paymasters, and the EntryPoint contract for next-gen wallet UX.
  • ERC-4626 Tokenized Vault Implementation — SemBricks implements ERC-4626 tokenized vaults for yield-bearing tokens. Standardized deposit/withdraw with share-based accounting.
  • ERC-6900 Modular Account Implementation — SemBricks implements ERC-6900 modular smart accounts with pluggable validation and execution modules for maximum flexibility.
  • Paymaster Development Services — SemBricks develops paymaster solutions for gas sponsorship, ERC-20 gas payment, and custom fee logic across EVM chains and L2 networks.
  • Gas Sponsorship Paymaster — SemBricks implements gas sponsorship paymasters that cover transaction fees for your users.
  • Token Paymaster Development — SemBricks develops token paymasters that let users pay gas fees in ERC-20 tokens instead of native ETH.
  • ERC-20 Gas Payment — SemBricks implements ERC-20 gas payment flows so users never need to hold ETH for transactions.
  • Custom Paymaster Development — SemBricks builds custom paymaster contracts with your specific business logic for gas payment policies.
  • zkSync Paymaster Development — SemBricks develops paymasters for zkSync's native account abstraction. Leverage zkSync's built-in paymaster support for gasless UX.
  • Stackup Paymaster Integration — SemBricks integrates Stackup's bundler and paymaster services into your account abstraction stack.
  • Biconomy Paymaster Integration — SemBricks integrates Biconomy's smart accounts and paymaster for gasless and seamless Web3 experiences.
  • Alchemy Gas Manager Integration — SemBricks integrates Alchemy's Gas Manager for gas sponsorship policies with usage limits and analytics.
  • Blockchain Signing Solutions — SemBricks implements signing solutions: EIP-712, meta-transactions, permit signatures, multisig, and threshold signing for secure blockchain interactions.
  • EIP-712 Typed Signing — SemBricks implements EIP-712 typed signing for human-readable signature prompts.
  • Meta-Transaction Development — SemBricks implements meta-transactions (ERC-2771) for gasless user interactions with your smart contracts.
  • Gasless Signing Flows — SemBricks builds gasless signing flows where users sign messages off-chain while a relayer submits the transaction.
  • Permit Signature Implementation — SemBricks implements EIP-2612 permit signatures for one-step token approvals and transfers.
  • Multisig Wallet Development — SemBricks builds multisig wallets for shared fund management. M-of-N signature schemes for teams and organizations.
  • Threshold Signature Schemes — SemBricks implements threshold signature schemes (TSS) for distributed key management without single points of failure.
  • Blind Signing Prevention — SemBricks implements blind signing prevention for safer wallet interactions. Transaction simulation and human-readable descriptions.
  • Layer 2 Development Services — SemBricks builds on Layer 2 networks: zkSync, Arbitrum, Optimism, Base, Polygon, and StarkNet. Faster, cheaper blockchain applications.
  • zkSync Development — SemBricks develops on zkSync Era with native account abstraction and paymaster support.
  • Arbitrum Development — SemBricks builds on Arbitrum One and Arbitrum Nova for fast EVM-compatible applications with lower gas costs.
  • Optimism Development — SemBricks develops on Optimism and the OP Stack for scalable Ethereum applications.
  • Base Chain Development — SemBricks builds on Base (Coinbase L2) for consumer-ready blockchain applications with mainstream adoption potential.
  • Polygon Development — SemBricks develops on Polygon PoS and Polygon zkEVM for high-throughput EVM applications.
  • StarkNet Development — SemBricks builds on StarkNet using Cairo for provable computation and scalable decentralized applications.
  • Cross-Chain Bridge Development — SemBricks builds cross-chain bridge integrations for asset and message transfer between L1 and L2 networks.
  • Layer 2 Tooling Development — SemBricks builds L2-specific tooling: gas estimators, bridge monitors, cross-chain indexers, and deployment automation.
  • Smart Contract Development — SemBricks develops secure, gas-optimized smart contracts. Upgradeable patterns, access control, multisig, timelocks, and custom token contracts.
  • Smart Contract Auditing Support — SemBricks provides auditing support for smart contracts. Code review, test coverage analysis, and remediation of discovered vulnerabilities.
  • Upgradeable Smart Contracts — SemBricks implements upgradeable smart contract patterns for long-lived on-chain applications that need future improvements.
  • Smart Contract Proxy Patterns — SemBricks implements proxy patterns for smart contract upgradeability: UUPS, Transparent, Beacon, and Diamond proxies.
  • Smart Contract Access Control — SemBricks implements access control for smart contracts. Role-based permissions, ownership management, and function-level restrictions.
  • Multisig Smart Contracts — SemBricks develops multisig smart contracts for shared control of funds and critical operations.
  • Timelock Smart Contracts — SemBricks implements timelock contracts for delayed execution of governance decisions and contract upgrades.
  • Custom Token Contract Development — SemBricks develops custom ERC-20, ERC-721, and ERC-1155 token contracts with your specific business logic and tokenomics.

Why SemBricks

With years of experience across industries and technologies, SemBricks combines deep technical expertise with a pragmatic, results-driven approach. We don't just build software — we engineer solutions that grow with your business.

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Ready to explore how SemBricks can help? Contact us today for a free consultation about your blockchain development services needs.