Why you should use Blockchain Developer Test?

The Blockchain Developer Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects: Understanding and implementing blockchain basics Writing and deploying smart contracts Building decentralized applications (DApps) Knowledge of various cryptocurrencies and their functionalities Ensuring blockchain security measures are in place Understanding different consensus mechanisms Working with distributed ledger technology Familiarity with different blockchain platforms Utilizing blockchain development tools Creating and managing tokenization mechanisms

Blockchain Developer Test

Q: What topics are covered in the Blockchain Developer Test?

Blockchain Basics Smart Contracts Decentralized Applications Cryptocurrency Blockchain Security Consensus Mechanisms Distributed Ledger Technology Blockchain Platforms Blockchain Development Tools Tokenization Blockchain Integration Blockchain Scalability

About the test:

The Blockchain Developer Online Test uses scenario-based multiple choice questions to evaluate candidates on their technical knowledge and practical skills related to blockchain development, covering topics such as blockchain architecture, consensus algorithms, smart contracts, cryptocurrency, token economics, decentralized applications (dApps), and blockchain security. The test aims to determine candidates' ability to build innovative blockchain solutions that solve real-world problems and meet business needs.

Covered skills:

Blockchain Basics
Decentralized Applications
Blockchain Security
Distributed Ledger Technology
Blockchain Development Tools
Blockchain Integration

Smart Contracts
Cryptocurrency
Consensus Mechanisms
Blockchain Platforms
Tokenization
Blockchain Scalability

Preview this test

View sample scorecard

9 reasons why

Adaface Blockchain Developer Assessment Test is the most accurate way to shortlist Blockchain Developers

Reason #1

Tests for on-the-job skills

The Blockchain Developer Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Understanding the basics of blockchain technology
Building and deploying smart contracts
Developing decentralized applications on blockchain platforms
Understanding the concepts of cryptocurrencies
Implementing security measures in blockchain applications
Knowledge of various consensus mechanisms
Understanding distributed ledger technology
Working with different blockchain platforms
Using blockchain development tools effectively
Understanding the process of tokenization
Integrating blockchain into existing systems
Managing scalability challenges in blockchain development

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

Preview this test

View sample scorecard

Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this Blockchain Developer Test will be non-googleable.

🧐 Question
Medium 51% Attacks	Solve
A 51% attack is perhaps the most discussed threat to any public Blockchain asset. A 51% attack happens when a certain miner or mining pool, that owns more than 50% of all the network’s hashing power, acts maliciously to disturb the network’s operation. For example: Two Bitcoin Cash mining pools, carried out a 51% attack on the Bitcoin Cash blockchain in order to stop an unknown miner from taking coins that they weren’t supposed to have access to, while the network forked. Which of the following CAN be done by a miner employing a 51% attack? A: Double spend their coins B: Reverse confirmed transactions C: Steal funds from a certain address D: Prevent transactions from being confirmed E: Create false transactions that never happened
Easy Evidence	Solve
Breed Chasing, solo engineer is planning to create new cryptocurrency, NEWCRAIGLIST and build a blockchain that facilitates buying and selling second-hand items with NEWCRAIGLIST from each other. Breed expects the platform to be used for international transactions and devised the following process: - Before a transaction is considered complete, the purchaser must put the funds in an escrow service - The sender must enter the courier tracking number into that same escrow Palmart, toy store giant in US is asked by lawmakers to provide evidence that proves the store’s toys are not produced through child labour. Palmart’s toys are transferred between 7 parties between creation and placement at the store. Palmart is considering using blockchain to solve this problem. Discretion in the reading and writing of transactions is highly important to the store chain to protect its proprietary interests. Review the following possible solutions and pick the best approach that solves Palmart’s problem: Option A: Use a public blockchain that supports assets. Then create a new toy asset for each item created. When the toy is transferred to the next party, mandate that the associated blockchain asset to be transferred to the next party's blockchain account with required metadata. Lawmakers can now view transactions and transfers at any time. Option B: Use a permissioned blockchain. Require that every party involved in the process to host a node on the Palmart's network. Create a new toy asset for each item created. When the toy is transferred to the next party in the process, have the previous party use a web portal to initialize a chain code Smart Contract to transfer control of the asset. When the next party receives the asset have them use a web portal to initialize a chain code Smart Contracts to acknowledge receipt of the asset. Provide read-only permissions to the lawmakers so they can receive the evidence they are looking for.
Medium Blockchain Interoperability Smart Contract Logic Interoperability Decentralized Applications	Solve
Consider a blockchain ecosystem where a decentralized application (dApp) is designed to operate across two different blockchains: Blockchain A, which uses a unique smart contract language and execution environment, and Blockchain B, which supports Ethereum Virtual Machine (EVM) compatible smart contracts. The dApp includes a cross-chain functionality where certain actions triggered in Blockchain A's smart contract result in specific operations in a smart contract on Blockchain B. The interoperability is facilitated through a decentralized oracle that verifies and relays information between the two blockchains. Given this setup, which of the following statements most accurately reflects the challenges and considerations in implementing this dApp's cross-chain functionality? A: Cross-chain functionality cannot be achieved due to the different smart contract languages and execution environments. B: The decentralized oracle introduces a single point of failure, compromising the security of the dApp. C: Synchronizing state between the two blockchains is seamless and does not introduce any additional latency. D: The dApp can maintain consistency and atomicity in transactions across the blockchains, but it faces challenges in data validation and oracle reliability. E: Smart contract execution on Blockchain B is entirely dependent on the state of the smart contract on Blockchain A. F: The interoperability poses no significant challenges, as EVM compatibility ensures seamless cross-chain communication.
Medium Strategic Tokenomics Tokenomics Cryptocurrency Economics	Solve
A new cryptocurrency, CryptoX, has a fixed total supply of 100 million tokens. Its initial release of 40 million tokens is distributed as follows: 10 million for development, 15 million for a decentralized autonomous organization (DAO) treasury, and 15 million for staking rewards. The remaining 60 million tokens are locked, with a scheduled release decreasing by 10% each year. CryptoX also has a deflationary mechanism where 0.1% of each transaction is burned. During a market downturn, CryptoX's price drops by 30% in a month. Market analysis attributes this drop primarily to increased token selling by short-term holders, influenced by a broader market downturn in cryptocurrencies. CryptoX's community is considering responses to stabilize the price and reassure long-term investors. Two strategies are proposed: 1) Increase the transaction burn rate to 0.2%, hoping to reduce the circulating supply faster and create a deflationary pressure. 2) Maintain the current tokenomics, believing that the downturn is part of normal market fluctuations and that the existing mechanisms are robust enough for long-term stability. Given the market analysis and the nature of the downturn, which strategy is more likely to effectively stabilize CryptoX’s price while maintaining long-term value? A: Increase the transaction burn rate to 0.2%. B: Maintain the current tokenomics without any changes. C: Temporarily suspend the transaction burn mechanism. D: Increase the release rate of the locked tokens. E: Implement a dynamic burn rate that adjusts with market conditions. F: Introduce a temporary buyback and burn program.

	🧐 Question	🔧 Skill
	Medium 51% Attacks	3 mins Blockchain	Solve
A 51% attack is perhaps the most discussed threat to any public Blockchain asset. A 51% attack happens when a certain miner or mining pool, that owns more than 50% of all the network’s hashing power, acts maliciously to disturb the network’s operation. For example: Two Bitcoin Cash mining pools, carried out a 51% attack on the Bitcoin Cash blockchain in order to stop an unknown miner from taking coins that they weren’t supposed to have access to, while the network forked. Which of the following CAN be done by a miner employing a 51% attack? A: Double spend their coins B: Reverse confirmed transactions C: Steal funds from a certain address D: Prevent transactions from being confirmed E: Create false transactions that never happened
	Easy Evidence	3 mins Blockchain	Solve
Breed Chasing, solo engineer is planning to create new cryptocurrency, NEWCRAIGLIST and build a blockchain that facilitates buying and selling second-hand items with NEWCRAIGLIST from each other. Breed expects the platform to be used for international transactions and devised the following process: - Before a transaction is considered complete, the purchaser must put the funds in an escrow service - The sender must enter the courier tracking number into that same escrow Palmart, toy store giant in US is asked by lawmakers to provide evidence that proves the store’s toys are not produced through child labour. Palmart’s toys are transferred between 7 parties between creation and placement at the store. Palmart is considering using blockchain to solve this problem. Discretion in the reading and writing of transactions is highly important to the store chain to protect its proprietary interests. Review the following possible solutions and pick the best approach that solves Palmart’s problem: Option A: Use a public blockchain that supports assets. Then create a new toy asset for each item created. When the toy is transferred to the next party, mandate that the associated blockchain asset to be transferred to the next party's blockchain account with required metadata. Lawmakers can now view transactions and transfers at any time. Option B: Use a permissioned blockchain. Require that every party involved in the process to host a node on the Palmart's network. Create a new toy asset for each item created. When the toy is transferred to the next party in the process, have the previous party use a web portal to initialize a chain code Smart Contract to transfer control of the asset. When the next party receives the asset have them use a web portal to initialize a chain code Smart Contracts to acknowledge receipt of the asset. Provide read-only permissions to the lawmakers so they can receive the evidence they are looking for.
	Medium Blockchain Interoperability Smart Contract Logic Interoperability Decentralized Applications	3 mins Blockchain	Solve
Consider a blockchain ecosystem where a decentralized application (dApp) is designed to operate across two different blockchains: Blockchain A, which uses a unique smart contract language and execution environment, and Blockchain B, which supports Ethereum Virtual Machine (EVM) compatible smart contracts. The dApp includes a cross-chain functionality where certain actions triggered in Blockchain A's smart contract result in specific operations in a smart contract on Blockchain B. The interoperability is facilitated through a decentralized oracle that verifies and relays information between the two blockchains. Given this setup, which of the following statements most accurately reflects the challenges and considerations in implementing this dApp's cross-chain functionality? A: Cross-chain functionality cannot be achieved due to the different smart contract languages and execution environments. B: The decentralized oracle introduces a single point of failure, compromising the security of the dApp. C: Synchronizing state between the two blockchains is seamless and does not introduce any additional latency. D: The dApp can maintain consistency and atomicity in transactions across the blockchains, but it faces challenges in data validation and oracle reliability. E: Smart contract execution on Blockchain B is entirely dependent on the state of the smart contract on Blockchain A. F: The interoperability poses no significant challenges, as EVM compatibility ensures seamless cross-chain communication.
	Medium Strategic Tokenomics Tokenomics Cryptocurrency Economics	2 mins Blockchain	Solve
A new cryptocurrency, CryptoX, has a fixed total supply of 100 million tokens. Its initial release of 40 million tokens is distributed as follows: 10 million for development, 15 million for a decentralized autonomous organization (DAO) treasury, and 15 million for staking rewards. The remaining 60 million tokens are locked, with a scheduled release decreasing by 10% each year. CryptoX also has a deflationary mechanism where 0.1% of each transaction is burned. During a market downturn, CryptoX's price drops by 30% in a month. Market analysis attributes this drop primarily to increased token selling by short-term holders, influenced by a broader market downturn in cryptocurrencies. CryptoX's community is considering responses to stabilize the price and reassure long-term investors. Two strategies are proposed: 1) Increase the transaction burn rate to 0.2%, hoping to reduce the circulating supply faster and create a deflationary pressure. 2) Maintain the current tokenomics, believing that the downturn is part of normal market fluctuations and that the existing mechanisms are robust enough for long-term stability. Given the market analysis and the nature of the downturn, which strategy is more likely to effectively stabilize CryptoX’s price while maintaining long-term value? A: Increase the transaction burn rate to 0.2%. B: Maintain the current tokenomics without any changes. C: Temporarily suspend the transaction burn mechanism. D: Increase the release rate of the locked tokens. E: Implement a dynamic burn rate that adjusts with market conditions. F: Introduce a temporary buyback and burn program.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	51% Attacks	Blockchain	Medium	3 mins	Solve
A 51% attack is perhaps the most discussed threat to any public Blockchain asset. A 51% attack happens when a certain miner or mining pool, that owns more than 50% of all the network’s hashing power, acts maliciously to disturb the network’s operation. For example: Two Bitcoin Cash mining pools, carried out a 51% attack on the Bitcoin Cash blockchain in order to stop an unknown miner from taking coins that they weren’t supposed to have access to, while the network forked. Which of the following CAN be done by a miner employing a 51% attack? A: Double spend their coins B: Reverse confirmed transactions C: Steal funds from a certain address D: Prevent transactions from being confirmed E: Create false transactions that never happened
	Evidence	Blockchain	Easy	3 mins	Solve
Breed Chasing, solo engineer is planning to create new cryptocurrency, NEWCRAIGLIST and build a blockchain that facilitates buying and selling second-hand items with NEWCRAIGLIST from each other. Breed expects the platform to be used for international transactions and devised the following process: - Before a transaction is considered complete, the purchaser must put the funds in an escrow service - The sender must enter the courier tracking number into that same escrow Palmart, toy store giant in US is asked by lawmakers to provide evidence that proves the store’s toys are not produced through child labour. Palmart’s toys are transferred between 7 parties between creation and placement at the store. Palmart is considering using blockchain to solve this problem. Discretion in the reading and writing of transactions is highly important to the store chain to protect its proprietary interests. Review the following possible solutions and pick the best approach that solves Palmart’s problem: Option A: Use a public blockchain that supports assets. Then create a new toy asset for each item created. When the toy is transferred to the next party, mandate that the associated blockchain asset to be transferred to the next party's blockchain account with required metadata. Lawmakers can now view transactions and transfers at any time. Option B: Use a permissioned blockchain. Require that every party involved in the process to host a node on the Palmart's network. Create a new toy asset for each item created. When the toy is transferred to the next party in the process, have the previous party use a web portal to initialize a chain code Smart Contract to transfer control of the asset. When the next party receives the asset have them use a web portal to initialize a chain code Smart Contracts to acknowledge receipt of the asset. Provide read-only permissions to the lawmakers so they can receive the evidence they are looking for.
	Blockchain Interoperability Smart Contract Logic Interoperability Decentralized Applications	Blockchain	Medium	3 mins	Solve
Consider a blockchain ecosystem where a decentralized application (dApp) is designed to operate across two different blockchains: Blockchain A, which uses a unique smart contract language and execution environment, and Blockchain B, which supports Ethereum Virtual Machine (EVM) compatible smart contracts. The dApp includes a cross-chain functionality where certain actions triggered in Blockchain A's smart contract result in specific operations in a smart contract on Blockchain B. The interoperability is facilitated through a decentralized oracle that verifies and relays information between the two blockchains. Given this setup, which of the following statements most accurately reflects the challenges and considerations in implementing this dApp's cross-chain functionality? A: Cross-chain functionality cannot be achieved due to the different smart contract languages and execution environments. B: The decentralized oracle introduces a single point of failure, compromising the security of the dApp. C: Synchronizing state between the two blockchains is seamless and does not introduce any additional latency. D: The dApp can maintain consistency and atomicity in transactions across the blockchains, but it faces challenges in data validation and oracle reliability. E: Smart contract execution on Blockchain B is entirely dependent on the state of the smart contract on Blockchain A. F: The interoperability poses no significant challenges, as EVM compatibility ensures seamless cross-chain communication.
	Strategic Tokenomics Tokenomics Cryptocurrency Economics	Blockchain	Medium	2 mins	Solve
A new cryptocurrency, CryptoX, has a fixed total supply of 100 million tokens. Its initial release of 40 million tokens is distributed as follows: 10 million for development, 15 million for a decentralized autonomous organization (DAO) treasury, and 15 million for staking rewards. The remaining 60 million tokens are locked, with a scheduled release decreasing by 10% each year. CryptoX also has a deflationary mechanism where 0.1% of each transaction is burned. During a market downturn, CryptoX's price drops by 30% in a month. Market analysis attributes this drop primarily to increased token selling by short-term holders, influenced by a broader market downturn in cryptocurrencies. CryptoX's community is considering responses to stabilize the price and reassure long-term investors. Two strategies are proposed: 1) Increase the transaction burn rate to 0.2%, hoping to reduce the circulating supply faster and create a deflationary pressure. 2) Maintain the current tokenomics, believing that the downturn is part of normal market fluctuations and that the existing mechanisms are robust enough for long-term stability. Given the market analysis and the nature of the downturn, which strategy is more likely to effectively stabilize CryptoX’s price while maintaining long-term value? A: Increase the transaction burn rate to 0.2%. B: Maintain the current tokenomics without any changes. C: Temporarily suspend the transaction burn mechanism. D: Increase the release rate of the locked tokens. E: Implement a dynamic burn rate that adjusts with market conditions. F: Introduce a temporary buyback and burn program.

Reason #4

1200+ customers in 75 countries

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!

Brandon Lee, Head of People, Love, Bonito

Preview this test

View sample scorecard

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Blockchain Developer Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Blockchain Developer Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

View sample scorecard

Preview this test

View sample scorecard

Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

Learn more

Preview this test

View sample scorecard

About the Blockchain Developer Online Test

Why you should use Pre-employment Blockchain Developer Test?

The Blockchain Developer Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

Understanding and implementing blockchain basics
Writing and deploying smart contracts
Building decentralized applications (DApps)
Knowledge of various cryptocurrencies and their functionalities
Ensuring blockchain security measures are in place
Understanding different consensus mechanisms
Working with distributed ledger technology
Familiarity with different blockchain platforms
Utilizing blockchain development tools
Creating and managing tokenization mechanisms

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Blockchain Developer Test?

Blockchain Basics
Blockchain basics refer to the fundamental concepts and principles of blockchain technology, such as distributed ledger, decentralization, and immutability. This skill is measured in the test to gauge the candidates' understanding of the core foundations of blockchain before diving into more advanced topics.
Smart Contracts
Smart contracts are self-executing contracts with predefined conditions written in code, which automatically enforce the terms of the agreement. Testing this skill in the assessment ensures that the candidates possess the necessary knowledge to develop and deploy smart contracts on a blockchain network.
Decentralized Applications
Decentralized applications (DApps) are applications that run on a peer-to-peer network of computers instead of a central server. Testing this skill helps recruiters assess the candidates' ability to design, develop, and deploy decentralized applications using blockchain technology.
Cryptocurrency
Cryptocurrency refers to digital or virtual currencies that use cryptography for security and operate independently of a central bank. Including this skill in the test allows recruiters to evaluate the candidates' understanding of cryptocurrency concepts, such as blockchain-based currencies, wallets, transactions, and mining.
Blockchain Security
Blockchain security involves protecting blockchain networks and applications from various threats such as hacking, data breaches, and malicious activities. Assessing this skill helps recruiters identify candidates who are knowledgeable about security best practices within the blockchain ecosystem.
Consensus Mechanisms
Consensus mechanisms determine how participants in a blockchain network agree on the validity of transactions and maintain the integrity of the ledger. Measuring this skill in the assessment ensures that candidates have a comprehensive understanding of different consensus algorithms, such as Proof of Work (PoW) and Proof of Stake (PoS).
Distributed Ledger Technology
Distributed ledger technology (DLT) is the underlying technology of blockchain that enables the decentralized and transparent storage of data across multiple nodes. Assessing this skill allows recruiters to assess the candidates' understanding of the fundamental principles and implementation of DLT in blockchain systems.
Blockchain Platforms
Blockchain platforms are software frameworks or infrastructures that provide the necessary tools and functionalities for building and deploying blockchain applications. Including this skill in the test helps recruiters evaluate candidates' knowledge of popular blockchain platforms like Ethereum, Hyperledger, and Corda.
Blockchain Development Tools
Blockchain development tools are software applications and libraries that facilitate the creation, testing, and deployment of blockchain-based applications. Measuring this skill allows recruiters to assess the candidates' familiarity with tools such as Solidity (for Ethereum smart contract development) and Truffle (for blockchain development and testing).
Tokenization
Tokenization refers to the process of converting real-world assets or rights into digital tokens on a blockchain. Testing this skill helps recruiters evaluate the candidates' understanding of tokenization concepts, token standards like ERC-20, and the integration of tokens within blockchain applications.
Blockchain Integration
Blockchain integration involves connecting existing systems and applications with blockchain networks to leverage the benefits of decentralized, transparent, and secure data storage and transactions. Assessing this skill helps recruiters identify candidates who can effectively integrate blockchain technology into various industries and use cases.
Blockchain Scalability
Blockchain scalability refers to the ability of a blockchain network to handle increasing transaction volumes and user demands without compromising performance and efficiency. Testing this skill in the assessment allows recruiters to evaluate the candidates' knowledge of scalability solutions like sharding, layer 2 protocols, and off-chain transactions.
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Blockchain Developer Test to be based on.
Blockchain fundamentals
Blockchain architecture
Smart contract programming
Blockchain protocols
Cryptocurrency mining
Decentralized storage
Ethereum blockchain
Hyperledger Fabric
EOS blockchain
Stellar blockchain
Solidity programming language
Web3.js library
Truffle framework
Ethereum Virtual Machine
Token standards (ERC20, ERC721, etc.)
ICO development
Oracles and external data feeds
Consensus algorithms (Proof of Work, Proof of Stake, etc.)
Cross-chain interoperability
Distributed ledger technology frameworks
Permissioned vs permissionless blockchains
Blockchain security best practices
Double spending problem
Private and public key cryptography
Secure key storage
Digital signatures
Blockchain auditing
Hash functions
Peer-to-peer networks
Blockchain data structures
Token economics
Web 3.0 and decentralized web
Zero-knowledge proofs
Sidechains and off-chain transactions
Scalability solutions (sharding, layer 2 protocols, etc.)
Enterprise blockchain solutions
Blockchain as a service
Smart contract testing
Web application integration with blockchain
Consensus protocol performance
Blockchain use cases in supply chain management
Identity management on blockchain
Privacy in blockchain
Blockchain for financial applications
Smart contract vulnerabilities
Gas and transaction fees
Interplanetary File System (IPFS)
Tokenization of assets
Blockchain governance
Decentralized autonomous organizations (DAOs)
Cryptographic hash functions
Blockchain regulation and compliance
Blockchain scalability testing
Blockchain development frameworks
Blockchain analytics
Decentralized finance (DeFi)
Non-fungible tokens (NFTs)
Blockchain consensus upgrades
Cross-border payments on blockchain
Blockchain marketplace development

Preview this test

View sample scorecard

What roles can I use the Blockchain Developer Test for?

Blockchain Developer
Smart Contract Developer
Blockchain Engineer
Cryptocurrency Developer
DApp Developer
Blockchain Consultant

How is the Blockchain Developer Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Integrating blockchain technology into existing systems
Designing solutions for blockchain scalability challenges
Staying up-to-date with the latest developments in blockchain technology
Implementing encryption techniques and cryptographic protocols
Analyzing and optimizing blockchain performance
Troubleshooting and debugging blockchain applications
Auditing and assessing the security of blockchain networks
Implementing multi-signature and threshold signature schemes
Integrating off-chain solutions with on-chain transactions
Designing and implementing consensus protocols for private blockchains
Managing and monitoring blockchain network nodes and transactions

Preview this test

View sample scorecard

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.

85%

reduction in screening time

View Full Case Study

Blockchain Developer Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

Non-googleable questions
IP proctoring
Screen proctoring
Web proctoring
Webcam proctoring
Plagiarism detection
Secure browser
Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.