Mastering the Art of Prescreening: Key Questions to Ask Web3 Developer for Better Results

What is your prior experience in Web3 development?

This question is vital to understanding the potential candidate’s hands-on experience with Web3 development and their familiarity with its real-world applications. It should help employers gauge not only the extent of their technical understanding but also their practical problem-solving abilities.

What programming languages are you proficient in?

A variety of programming languages are used in the field of Web3 development. A clear understanding of the candidate's proficiency in these will give a hint of their ability to navigate different technical frameworks and challenges.

How familiar are you with Solidity?

Solidity is the most popular language for writing smart contracts for Ethereum. Therefore, a degree of familiarity is crucial to creating productive and secure smart contracts.

Can you explain what Smart Contracts are and how they work?

The efficacy of a developer is pinned to their understanding of Smart Contracts. This will unveil the functionality, benefits, and restrictions of these contracts, and thus, their aptitude in this area.

Do you have experience in token development?

Token development forms an important part of Web3 development, whether it's for ICOs, utility tokens, or fungible/non-fungible tokens. The experience in this field can demonstrate both technical expertise and an understanding of token economics.

Do you have any published DApps that you can show us?

This question serves as a form of tangible proof of the candidate's experience in Web3 development and can provide insight into their coding abilities, style, creativity, and the real-world impact of their projects.

Do you have experience integrating Web3.js or Eth.js?

Web3.js and Eth.js are important libraries for interacting with Ethereum's smart contracts. Candidates with experience in these tools may be more capable and efficient in developing and maintaining DApps.

Can you explain what gas in Ethereum is?

Understanding the concept of 'gas' is fundamental to Ethereum development as it’s the mechanism of action behind transaction processing. This question tests the candidate’s knowledge of Ethereum's architecture and their capability in optimising transactions to minimise gas fees.

Can you explain the key differences between Web2 and Web3?

Understanding the transition from Web2 to Web3 is vital to any developer working in this area. It signifies how well they understand the changes and improvements Web3 brings and how they can contribute towards further innovations.

What methods have you used in the past for debugging Smart Contracts?

Debugging is a key skill for any developer. This question addresses the ability to approach a problem critically within the specific context of Smart Contracts.

Do you have experience in using Truffle or Hardhat development environment?

Truffle and Hardhat are popular development environments for Ethereum. Knowing these tools indicates a practical understanding and experience in the development, testing, and deployment of DApps on the Ethereum blockchain.

Are you familiar with IPFS? Can you provide instances where you have used it?

A working knowledge of the InterPlanetary File System (IPFS), a decentralized network protocol, is important as it demonstrates understanding of data storage and retrieval in the context of decentralized applications.

How experienced are you with blockchain technologies?

Blockchain forms a significant part of Web3, understanding blockchain technologies involves understanding the capabilities and limitations of blockchain, along with an awareness of its technological subtleties, benefits, and potential pitfalls.

What decentralized blockchain platforms have you previously used in your projects?

The answer to this will speak volumes about the candidate’s experience and understanding of associate development platforms and their respective languages, tools, and protocols.

Do you understand what DAO is? Can you tell us more about it?

Digital Autonomous Organizations (DAOs) are a critical component of the decentralised Web3 vision. A developer who understands DAOs will likely have a deeper understanding of decentralised governance and the applications of Web3 tech beyond coding.

How familiar are you with Non-Fungible Tokens (NFTs)?

With the rise in popularity of NFTs, having experience of developing and working with them showcases a developer’s relevant and market-friendly skills.

What encryption methods are you familiar with, in the context of blockchain technology?

Encryption forms the foundation of blockchain's security and privacy. A familiarity with cryptographic principles and techniques reveals a strong understanding of security protocols.

Do you have experience working with Layer-2 scaling solutions?

Layer-2 solutions are critical for alleviating the congestion and scalability issues on main blockchains. An experienced candidate should be familiar with these solutions, reflecting an understanding of the pressing issues and potential answers within the crypto space.

Can you describe the security considerations needed when developing a Smart Contract?

Code vulnerabilities and insufficiencies can lead to significant financial losses in Smart Contracts. Thus, understanding the security considerations is absolutely necessary for any application involving monetary transactions or sensitive data.

Do you have experience in conducting tests for Smart Contracts? What frameworks do you use for testing>

Testing is a critical aspect of any software development, more so in blockchain due to the irreversible nature of deployments. The choice of testing frameworks and methodologies indicates carefulness, attention to detail and a professional approach towards work.