Blockchain
Hire Blockchain Developers
Blockchain developers build applications on public chains: smart contracts, decentralised apps, wallet integrations and tools that read on-chain data.
The role
What blockchain developers do
Blockchain work spans contract development, front ends that connect to wallets, back-end services that index chain data, and integrations with payment or token systems. A good developer will also tell you when a normal database would serve you better.
Typical deliverables
- Smart contracts
- Web apps connected to wallets
- Indexers and on-chain data APIs
- Token or payment integrations
- Architecture advice for your use case
Tools you will see
- Ethereum and EVM chains
- Solana
- Solidity or Rust
- The Graph
- Wallet libraries
Choosing
How to choose blockchain developers
What to look for
- Shipped projects on the chain you plan to use.
- Security awareness around contracts and keys.
- Clear explanation of trade-offs and costs.
- Honesty about whether blockchain fits your problem.
Questions to ask
- 1Why does this project need a blockchain?
- 2Which chain would you use, and why?
- 3How do you handle private keys and security?
- 4What will transactions cost users?
Planning
Before you post the job
Does it need a chain?
Public blockchains suit shared, verifiable records and digital assets. Many business apps work better with a normal database.
What drives cost
Contract complexity, chain choice, security review and front-end work.
Hiring on Open Lance
- Posting a job and reviewing proposals are free.
- Each milestone is funded into escrow before work starts and paid when you approve it.
- Hire fixed-price, hourly, as a monthly Dedicated Hire, or buy a packaged Drop-In.
- Client fees are shown before you pay and added on top of the work.
FAQ
Questions about hiring blockchain developers
Ethereum or Solana?
Ethereum has a large ecosystem and EVM compatibility. Solana offers lower fees with a different programming model.
Are blockchain apps secure?
The chain may be secure, but contracts and apps can still have bugs. Testing and audits matter.
Do users need crypto wallets?
Usually, though some apps hide wallets behind easier sign-in methods.
Related
Related skills
Post a job for blockchain developers
Describe the work and compare proposals. You only fund the first milestone once you have chosen someone.