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Sr. Blockchain Developer (Smart Contracts, Hyperledger Fabric, G

Engineering | Remote, - / +4 hrs from PDT | Contract | From $85.00 to $120.00 per hour

Job Description

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

LOCATION: Remote (TimeZone: BST, CST, EST)

HOURLY RANGE: Our client is looking to pay $85 - $120 USD / HR

ESTIMATED DURATION: 40Hrs/Week - Long-term, ongoing project


Braintrust ( is a user-controlled talent network, where you keep 100% of what you earn and get a say in how the network is run with the BTRST token. We've onboarded some of the world's most reputable brands and now we need a Sr. Blockchain Developer (Smart Contracts, Hyperledger Fabric, Go OR Python) for one of our clients.  



  • Bachelor’s degree in Information Technology, Computer Science or a related field
  • Experience working as a Blockchain Developer or a similar role in the IT department.
  • Experience writing smart contracts in Hyperledger, in Golang or Python.
  •  Experience leading to a complete understanding of the software development lifecycle
  •  Expertise in building robust systems (resiliency, fault tolerance, scalability) at scale
  • Demonstrate excellent ability to code in various languages such as NodeJs, Python, GoLang, Rust and others.
  •  Experience in working with various types of cryptography to secure data.
  •  Outstanding understanding of data structures and algorithms.
  •  Knowledge of various cybersecurity guidelines and protocols.
  •  Strong understanding and knowledge of various kinds of cyberattacks.
  • Ability to work in a team or individually as and when required.
  • Experience working with Cloud platforms such as MS Azure, AWS preferred


  • Architect, develop, and deploy decentralized applications providing permission access to data at both the smart contract and protocol level
  •  Develop & Interacting with Smart Contracts implemented on most common Blockchain/DLT technology platforms
  • Write smart contract code in a Hyperledger (Sawtooth and Fabric) ecosystem.
  • Oracle development (connecting "off-chain" data to the blockchain)
  •  Construct integration libraries to interface with our server and APIs
  • Collaborate closely with the rest of the engineering team to review application requirements, help plan implementation details and estimate delivery timelines
  • Provide mentorship to your peers in the engineering team through education on best practices
  • Preparing documentation on the blockchain development processes.
  • Adhering to all the rules and regulations of data protection for digital payments.
  • Staying updated with the latest crypto technologies for data protection

Job Description

The Blockchain Developer will represent the Digital Asset Innovation development team and play a key role supporting the digital transformation of assets and asset servicing functions leveraging emerging technologies such as cloud technologies, distributed ledgers, machine learning, cognitive algorithms etc., to position the client to be a key participant in the digital future.

As a Blockchain Developer, you are responsible for developing application features and interfaces using blockchain technology. You will be also responsible for designing and developing a system that is secure, reliable, and scalable.

Your primary goal for this job role will be designing, implementing, and administering a secure blockchain network. You should be highly knowledgeable about various blockchain technologies. You should also have an excellent understanding of cryptography and its uses in the blockchain network. You should be knowledgeable about packing & deploying apps via CI/CD pipelines to a cloud platform.

To succeed in this job role, you should possess excellent communication skills. You should also have a keen eye for details. You should be able to manage multiple projects simultaneously.


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. But if you are a professional contractor who has created an LLC/corp around your 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.