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  • Application deadline: 3 weeks
    C

    Software Developer – Early Career

    Crypto.comFULL_TIMENA

    Job description
    Crypto.com is a global digital asset platform operating products used by a large international user base. This role sits within an engineering team responsible for building and maintaining software for venture-style projects that extend beyond the company’s core offerings. The position involves contributing across the application stack, including user-facing interfaces...
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    Explanation:
    BFT-based (Byzantine Fault Tolerant) consensus mechanisms achieve instant or near-instant finality by requiring agreement among validators in just one round of communication, allowing transactions to be finalized in seconds—faster than PoW, PoS, or DPoS.
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  • Application deadline: 1 month
    B

    Cyber Security Analyst

    Blockchain.comFULL_TIMENA

    Job description
    Blockchain.com is seeking a Cyber Security Analyst to support its security operations as the company continues scaling its global digital asset platform. The role involves working within the internal security team to safeguard systems, employees, and users across a distributed financial environment. This includes monitoring threats, managing endpoint protection, responding...
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  • Difficulty - Medium
    Total Plays - 23
    Allowed Time - 10 sec
    Best time - 1.968 sec

    What is a rollup?

    Tip: Click "Play" to reveal options and start playing.
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    Explanation:
    Rollups are Layer 2 blockchain scaling solutions that bundle multiple transactions off-chain and then post cryptographic proofs to the main chain. This reduces gas fees and increases transaction speed while maintaining the security and decentralization of the base blockchain. Rollups are key to Ethereum scalability and the future of high-performance Web3 applications.
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