Blockchain Engineer

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Description

Blockchain Engineer Remote (U.S.) — Full Time The Cari Network is building a blockchain-based payment system powering real-time, 24/7 movement of digital money across the traditional finance and digital asset ecosystems. A pre-launch startup, we're creating an entirely new category of financial infrastructure that brings cash on chain through tokenization while powering the full spectrum of payments for our network—banks, digital asset exchanges, and, most importantly, the customers they serve. About the Role You'll work within the systems that take a payment instruction and turn it into an immutable, on-chain record—implementing features and extensions within an established transaction pipeline architecture, alongside senior engineers who own its design. That means building out pieces of the integration layer between our backend services and our institutional custody platform, and contributing to transaction integrity from calldata construction through on-chain finality on our private ZKsync-based L2. You'll also work directly in our smart contract suite, extending existing contracts under established upgrade-safety and role-governance patterns, and building the audit trail and compliance evidence that regulated bank partners require. What You'll Do Implement components of the transaction lifecycle: calldata construction, custody platform signing requests, nonce handling, L2 submission, and finality confirmation, working within the pipeline architecture senior engineers on t

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