In Progress

Ethereum smart contract ERC20 for Pre-ICO & ICO Phase


Experience in creating complex smart contracts on Ethereum platform is needed.

Should have prior experience in initial coin offering projects and blockchain based products.


Solidity, Ethereum Virtual Machine (EVM), NodeJS, Geth, TestRPC, Truffle v4, Atom, web3 JS API, MetaMask/MIST, Html, Css, Javascript frameworks, SQL Server 2012


- Design, develop & test the Dapps built using Webpack Truffle boxes & front-end technologies.

- Use Ethereum contract design patterns (such as Self-destruct, race condition, safe math Factory, Name registry, Mapping Iterator, etc.).

- Built, deploy and thoroughly test the smart contracts in various test environments – TestRPC, Geth private network and Ropsten test network/acceptance environment.

- Use Atom & Truffle’s Mocha Javascript testing framework & Chai behavior driven development assertions in TestRPC to test various test cases of test suite.

- Develop & test the token creation & token distribution smart contracts. For crowd-sale contract, develop & test the contribute, refund, funding status and payout functions.


1. Smart contracts -Pre ICO & ICO Phase

-Token creation

-Token distribution against incoming Ether address

- Ether current price based calculation to find how much token to be send to an incoming ETH payment

- In Pre-ICO stage there will be sale with 20-30% free token on each purchase.

2. Token Distribution for Bounty/AirDrop/PR campaigns, Somthing like - there will be a list of wallet addresses in database, we might be sending tokens to that list of addresses.

3. Integration with ICO website through web3 JS API


[login to view URL] should be listable in any exchange

Please share your experience on these skills and present reference implementations in your proposal.

It will be a long term work, if worked then you can work with us on our product dapp.

Skills: Blockchain, Ethereum, Git, HTML, jQuery / Prototype

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About the Employer:
( 7 reviews ) Chandigarh, India

Project ID: #16590462

Awarded to:


Hello, i'm a solidity developer and also create dapps. I can write your pre-ICO and ICO contracts with all your requirements, no matters the complexity. Please tell me why you require the freelancer to use atom? is More

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