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Software Engineer - Blockchain & Digital Assets

N3xt

Salary not specified
Dec 18, 2025
Remote, US
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Liberating Money by building, scaling, and owning the public blockchain layer of the product offering

Requirements

  • Public Blockchain Mastery: Expert-level Solidity and experience with the Ethereum Virtual Machine (EVM).
  • Event-Driven Systems: Proficiency with high-throughput message brokers (e.g., Kinesis, PubSub, RabbitMQ) to manage the flow of finalized blockchain events.
  • Resilient Architecture: Strong understanding of Idempotency and Event Ordering to prevent race conditions during distributed state updates.
  • Blockchain Integration: Experience building distributed, fault-tolerant services that interact with blockchain nodes via JSON-RPC.
  • Identity & Compliance: Familiarity with on-chain whitelisting mechanisms using NFTs to enforce regulatory standards.
  • Familiarity with the FinTech, Blockchain, or Web3 ecosystems and concepts like smart contracts.
  • Knowledge of containerization and orchestration technologies like Docker and Kubernetes.

Responsibilities

  • Smart Contract Development: Build and deploy tokenized assets (ERC-20) and Identity NFT (ERC-721) contracts on public blockchains.
  • Finality-Aware Infrastructure: Develop chain-oriented services, ensuring the platform correctly handles probabilistic finality and chain reorganizations before notifying internal systems.
  • Real-Time Synchronization: Maintain and support reconciliation services to process on-chain events (mints, burns, transfers) and trigger corresponding updates in our internal systems.
  • Secure Mint/Burn Orchestration: Implement services utilizing Hardware Security Modules (HSMs) for secure, multi-party authorized on-chain transactions.
  • Inconsistency Detection: Implement Discrepancy Detection Services to verify fundamental system invariants.
  • System Scalability & Reliability: Gain a deep understanding of our cloud architecture to ensure the high availability and scalability of our APIs, data processing reactors, and ledger systems.
  • Mentorship & Collaboration: Act as a technical mentor for junior engineers and a subject-matter expert for business stakeholders, helping them effectively consume and interpret platform data.

Other

  • 3+ years of professional software engineering experience, with a significant focus on data engineering or backend systems.
  • A Bachelor's or Master's degree in Computer Science, Engineering, or a related field.
  • Excellent problem-solving skills and the ability to work independently in a fast-paced environment.
  • Previous experience mentoring junior engineers or acting as a tech lead on projects.
  • Competitive salary, benefits and professional development support.