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Blockchain Developer


About The Position


The Sandbox is a virtual world where players can build, own and monetize their own voxel gaming experiences on the Ethereum blockchain, using NFTs and our main utility token $SAND.

We are building a deeply immersive gaming virtual world metaverse where creators get the chance to make games next to gaming giants and brands such as Atari, Rollercoaster Tycoon, Care Bears, The Smurfs, Shaun the Sheep and more gaming partners.

Join our dynamic team on our mission to empowering creators

- What is The Sandbox :

- Game Teaser :

- Website

We are looking for an experienced Ethereum/Polygon blockchain developer to join our engineering team and work with us on building a vision of the Metaverse where User-Generated Contents meets Non-Fungible Tokens (ERC-721 & ERC-1155). You will be developing Layer 2 integration, Staking, DeFi, DAO, NFT contracts in one of the most innovative stacks.

Your main responsibilities will be:

  • Write the Smart-Contracts code for the blockchain aspects of The Sandbox platform
  • Collaborate with other team members on the Architecture of the Smart-Contracts of the Blockchain components of the ecosystem
  • Collaborate with other team members on the Technical Aspects (technical stack, code reviews, choice of solutions etc)
  • Guarantee the implementation of secure and optimal smart-contract code
  • Participate actively in writing of the Technical Documentation of the code and systems developed for the platform
  • Communicate on regular basis with the team (using weekly reporting and scrum methodology) to follow the status and progress


  • Experienced profile with proven records of complex smart contract development (please join your github url)
  • Experience with Smart Contracts (Ethereum and Polygon)
  • Experience with non-fungible tokens
  • Obsessed by best practices and security
  • Ability to deep dive into unknown code and to analyze it quickly
  • Ability to write technical documentation
  • Experience on both Ethereum and Polygon networks
  • Flexible, with a capacity to synthesise encountered problems
  • Great autonomy and proactive
  • EMEA timezone
  • French speaking is a plus (but not mandatory)

Apply for this position