01
Architecture and token design
Contract architecture, roles and permissions, upgradeability decision and token standard selection.
Ethereum Development Services: Smart Contracts, dApps and DeFi
PerfectionGeeks designs, tests and deploys Ethereum smart contracts and decentralised applications in Solidity: tokens, DeFi protocols, NFT marketplaces, DAOs and wallets, on Ethereum mainnet, Layer 2 networks such as Base, Arbitrum and Optimism, or Polygon PoS. A basic ERC-20 token and simple dApp costs $20,000-$40,000; DeFi protocols $80,000-$200,000. Blockchain architecture is led by our founder, Shrey Bhardwaj, who works in protocol design and Solidity.
12+Years Building Software
200+Projects Delivered
4.9/5Clutch Rating (45+ Reviews)
- We build in Solidity with Foundry or Hardhat, OpenZeppelin libraries and test on the Sepolia testnet before any mainnet release.
- For most new dApps, a Layer 2 rollup (Base, Arbitrum, Optimism or zkSync) gives much lower fees than Ethereum mainnet while settling to Ethereum; Polygon PoS is a low-fee alternative with its own validator set.
- No contract that holds user funds goes to mainnet without full test coverage and an independent external audit.
- Typical budgets: token and simple dApp $20,000-$40,000; NFT marketplace $40,000-$100,000; DeFi protocol $80,000-$200,000; complex multi-contract systems $150,000-$300,000+.
- Blockchain architecture is led by founder Shrey Bhardwaj, with an in-house team in Gurugram, India.
Ethereum Development Cost by Project Type
External audit fees are quoted by the audit firm and depend on code size. Free project scoping within 24 hours.
| Project | Typical components | Budget at PerfectionGeeks |
|---|---|---|
| Token and simple dApp | ERC-20 token, staking or claim page, wallet connection | $20,000-$40,000 |
| NFT marketplace | ERC-721/ERC-1155 contracts, listing, auctions, EIP-2981 royalties, IPFS metadata | $40,000-$100,000 |
| DeFi protocol | AMM, lending or staking contracts, oracles, admin and risk controls | $80,000-$200,000 |
| Complex ecosystem | Multiple integrated contracts, governance, bridges and dashboards | $150,000-$300,000+ |
Our Ethereum Development Services
Smart contract development
Solidity contracts for tokens, vesting, escrow, subscriptions and on-chain business logic, built on audited OpenZeppelin libraries.
dApp development
Web and mobile front ends with wallet connection (MetaMask, WalletConnect), transaction status and clear error messages.
DeFi protocols
AMMs, lending, staking and vaults (ERC-4626), with oracle integration and emergency pause controls.
NFT platforms
Minting, marketplaces, lazy minting and royalty support with ERC-721, ERC-1155 and EIP-2981.
Smart accounts and wallets
Account abstraction (ERC-4337) and gas sponsorship so users can start without holding ETH.
Audit preparation and upgrades
Code review, test coverage, documentation for auditors and safe upgrade patterns.
Ethereum Mainnet vs Layer 2: Where Should Your dApp Run?
| Factor | Ethereum mainnet | Layer 2 (Base, Arbitrum, Optimism, zkSync) |
|---|---|---|
| Transaction fees | Highest | Much lower |
| Security | Ethereum consensus | Settles to Ethereum; depends on the rollup design |
| Liquidity and integrations | Deepest | Large and growing, varies by network |
| Best for | High-value assets and protocols that need mainnet liquidity | Consumer apps, games, NFTs and frequent small transactions |
How We Build and Ship Ethereum Projects
02
Development
Solidity contracts and the dApp front end, built in parallel against a shared specification.
03
Testing
Unit tests with Foundry or Hardhat, fuzz testing, mainnet fork tests and a public testnet deployment on Sepolia.
04
Audit
Independent external security audit; every finding is fixed or documented before launch.
05
Launch and monitoring
Mainnet or Layer 2 deployment with verified source code, multisig admin keys and on-chain monitoring.
Which Ethereum Token Standard Do You Need?
| Standard | Use it for |
|---|---|
| ERC-20 | Fungible tokens: utility, governance, stablecoin-style tokens |
| ERC-721 | Unique NFTs such as art, tickets or certificates |
| ERC-1155 | Many token types in one contract, common in games |
| ERC-4626 | Tokenised yield vaults in DeFi |
| ERC-1400 | Security tokens for regulated assets |
| EIP-2981 | NFT royalty information for marketplaces |
Related Services
Related Services
Scope Your Ethereum Project
Share your token, dApp or DeFi idea. We reply within 24 hours with an architecture outline, timeline and cost range.
Client Testimonials
PerfectionGeeks provided excellent service from start to finish. Their team was professional, easy to work with, and delivered exactly what we needed on time. We’re very pleased with the outcome and would gladly recommend them to others.
Thanaboon Mingkaew
CEO, SMART IOT
We partnered with PerfectionGeeks for a custom accounting automation software, and the experience was excellent. Their team delivered a high-quality solution that streamlined our operations and improved efficiency. Professional, skilled, and reliable — we’re already working with them on another project.
Saarthak Gupta
Founder, Ceos Accounting Services
As COO of TRP Construction Management, I’m proud of our growth from 300 to 16,000+ SKUs and 4,000+ vendors since 2022. Thanks to Shrey Bhardwaj and Perfection Geeks for delivering scalable, future-ready technology solutions that transformed our vision into a seamless pan-India platform. Highly recommended technology partner.
Mayank Pathak
COO, TRP Construction Management
PerfectionGeeks Technologies transformed our vision into reality with innovative technology solutions. Their professionalism, timely delivery, transparent communication, and commitment to quality made the entire collaboration smooth, reliable, and highly satisfying.
Armaan
Cofounder, Kzminer
I highly recommend PerfectionGeeks Technologies for mobile and web development services. Their expertise, dedication, creative ideas, and customer-focused approach helped our business achieve impressive digital growth successfully.
Chetna
Founder CEO , Klicked
Choosing PerfectionGeeks Technologies was the best decision for our company. Their skilled developers created a user-friendly platform, provided constant assistance, and ensured exceptional performance beyond our expectations every step.
Mark
CTO, IMSMART
Working with PerfectionGeeks Technologies was an excellent experience. Their team delivered our project on time with outstanding quality, smooth communication, innovative solutions, and professional support throughout the entire development process.
Naveen
Founder Director , Way2Kart
PerfectionGeeks Technologies delivered a smooth, professional experience with excellent communication and technical expertise. Their team understood project requirements clearly, provided timely updates, and ensured high-quality results that exceeded expectations.
Srinivasa Mothay
CTO, Sethu Fishries
PerfectionGeeks Technologies impressed with their innovative solutions, responsive support, and commitment to quality. The team handled every detail professionally, delivered on time, and created a seamless experience from start to finish.
Mervin
Cofounder & CTO, Clover Infinity
Frequently Asked Questions
How much does Ethereum development cost?
At PerfectionGeeks, a token and simple dApp costs $20,000-$40,000, an NFT marketplace $40,000-$100,000, a DeFi protocol $80,000-$200,000 and complex multi-contract systems $150,000-$300,000+. External audit fees are extra.
Should I launch on Ethereum mainnet or a Layer 2?
Most new consumer dApps launch on a Layer 2 such as Base, Arbitrum or Optimism because fees are much lower. Mainnet makes sense for high-value assets or protocols that need mainnet liquidity.
Which language is used for Ethereum smart contracts?
Solidity is the main language. We write Solidity contracts on audited OpenZeppelin libraries and test them with Foundry or Hardhat.
Do you audit smart contracts?
We test every contract thoroughly and prepare it for audit, but we always recommend an independent external audit before mainnet launch. No contract that holds user funds should launch without one.
Can users use my dApp without holding ETH for gas?
Yes. With account abstraction (ERC-4337) and a paymaster, your app can sponsor gas fees so new users can sign up and transact without buying ETH first.
Who leads blockchain work at PerfectionGeeks?
Blockchain architecture is led by founder and director Shrey Bhardwaj, who has 16+ years of experience and works in blockchain architecture, protocol design and Solidity.