Recherche actuelle

23 Résultats de la recherche

For Freelance In London

Solidity Engineer - Blockchain

England, London

  • £400 to £450 GBP
  • Developer Role
  • Skills: Blockchain | Smart Contracts | Solidity | Ethereum | Node.js
  • Seniority: Mid-level

Description du poste

The Role

The client's goal is to build the tools to make the decentralised economy a reality and accessible to all. We have spent a considerable amount of time and resources in building a tooling infrastructure and a consumer facing wallet to achieve our goal.

Our consumer facing infrastructure framework is packaged as an SDK, Etherspot, which can be included by any dApps, wallets, and services seeking to utilise Smart Contract wallet technologies in their offerings over a multi-chain setting.

We are seeking an exceptional solidity/full stack developer inherently aligned to our core values.


* Passionate about decentralized applications, open-source software, and DeFi
* Passionate
* An experienced DeFi and cryptocurrency user
* Minimum 1-year experience in a similar role
* Experience in working in an agile environment to quickly iterate and deliver features to users.
* 1+ years of writing code in Solidity
* 2+ years of wiriting code using js
* 2+ years of experience in software development
* Follow test-driven deployment approach
* Experience building and consuming APIs to interact with other protocols
* Experience with Ethereum development (Ethers, Web3)
* Familiarity with code versioning tools (git) and repo management
* Reactjs frontend development experience is a big plus
* Hardhat knowledge is a big plus
* Note: If you do not meet 100% of these qualifications, we still strongly encourage you to apply.

If interested, get in touch!

☎️ 0203 879 8394


Back End Developer | SC Cleared | Node.js | React | Remote

England, London

  • £500 to £600 GBP
  • Developer Role
  • Skills: Back End Developer | SC Cleared | Node.js | React | Remote
  • Seniority: Senior

Description du poste

Back End Developer | SC Cleared | Node.js | React | Remote

Jefferson Frank are working with a leading technology partner who are seeking to on board a SC Back End Engineer.

Successful Engineer must have valid SC clearance and be skilled with working as part of a talented Development team and have the ability to network and leverage ideas and solutions to key project stakeholders.

Key Duties:

1 Develop software for users which are allocated to you in accordance with development guidelines.
2 Unit test the software you have developed to ensure that it is high quality, error free and meets the requirements laid out.
3 Upload the software into the code repository ensuring that any issues identified following the automated testing are fixed.
4 Provide support during system testing and accessibility testing fixing code issues identified promptly.

Successful Engineer with have experience or have touched on the following:

* HTML, CSS, JavaScript, JQuery
* Node.JS 8+ JavaScript experience
* Experience of developing front end in ReactJS
* Experience of specifying REST API's
* Experience of using Bootstrap
* Experience of working with Docker containers
* GraphQL
* Git
* Understanding of Document management and streaming technologies
* Experience in integration - Integrating large scale components in a Web Application development environment

Please apply, or feel free to get in touch directly at

Back End Developer | SC Cleared | Node.js | React | Remote