Senior Blockchain Engineer

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Beschreibung

Senior 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 own the systems that take a payment instruction and turn it into an immutable, on-chain record—as the trusted technical decision-maker for that domain. That means designing and extending the integration layer between our backend services and our institutional custody platform, and being accountable for transaction integrity from calldata construction through on-chain finality on our private ZKsync-based L2. You'll also own significant parts of our smart contract suite, maintaining upgrade safety, on-chain event integrity, and audit trails that satisfy the compliance and evidentiary requirements of regulated bank partners. What You'll Do Own the end-to-end transaction lifecycle as a domain: calldata construction, custody platform signing requests, nonce management, L2 submission, and finality confirmation Design the signing pipeline architecture — parallelization strategies, throughput management against custody platform rate limits, and async transaction su

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