Your browser cookies must be enabled in order to apply for this job. Please contact if you need further instruction on how to do that.

Mid-Senior Blockchain Developer (Ethereum/Solidity/L2 Scaling)

Engineering | Remote | Full Time

Job Description

JOB TYPE: Freelance, Contract Position - No agencies (See notes below)

LOCATION: Remote (TimeZone: 4 to 5 hours working hours overlap with Europe timezone)

HOURLY RANGE: Our client is looking to pay $80 - $110 USD / HR

ESTIMATED DURATION: 40Hrs/Week - Long Term, ongoing


Braintrust ( is a user-controlled talent network, where you keep 100% of what you earn and actually get to own the platform. We've been onboarding some big clients and specifically need a Blockchain Developer for our client.  

About the Role/Project

We are looking for a Mid-Senior Ethereum/Solidity Developer to join our existing team and play a key role in developing the blockchain layer and smart contracts underlying the web3 platform.

The ideal candidate is someone with a deep understanding and passion for blockchain, DeFi and NFTs. You will need to be very experienced in Solidity and writing smart contracts from the bottom up.

First Few Deliverables

  1. Adapt current Hyperledger Fabric based logics to Ethereum L2 scaling (zksnarks etc) 
  2. Improve performance of Ethereum based business logics in relation to HLF based ones
  3. Build new logics native to substrate like cross chain communication and decentralized search 

Must Haves

  • 2 to 3 years experience in:
    • Ethereum
    • Solidity
    • Layer 2 scaling solutions
  • 4 to 5 hours working hours overlap with Europe timezone
  • Availability for at least 2 months minimum
  • Strong communication skills
  • Team player
  • Ready to change the world and excited to be rewarded for it


Qualified candidates will be invited to do a screening interview with the Braintrust staff. We will answer your questions about the project, and our platform.  If we determine it is the right fit for both parties, we'll invite you to join the platform and create a profile to apply directly for this project.  

C2C Candidates: This role is not available to C2C candidates working with an agency. If you are a professional contractor who has created an LLC/corp around their consulting practice, this is well aligned with Braintrust and we’d welcome your application.  

Braintrust values the multitude of talents and perspectives that a diverse workforce brings. All qualified applicants will receive consideration for employment without regard to race, national origin, religion, age, color, sex, sexual orientation, gender identity, disability, or protected veteran status.