Senior Blockchain Developer

Salary: $58000 - 97000 per year Requirements: We need 10+ years of blockchain development experience and 10+ years working with Java Spring Boot. We require a strong command of the full software development lifecycle (SDLC). We are looking for hands-on expertise in blockchain architecture and decentralized application development. We expect extensive programming experience with Solidity, Java, Node.js, Python, Go, and Rust. We need deep knowledge of cryptography, data encryption, digital signatures, hashing algorithms, and secure key management. We require experience building highly available, fault-tolerant, and scalable distributed systems. We need advanced proficiency in data structures and algorithms. We expect strong understanding of cybersecurity frameworks, security protocols, blockchain security, and digital payment security standards. We require experience with smart contract development, oracle development, API integration, distributed ledger technologies, and CI/CD pipelines. We are looking for excellent problem-solving and software engineering skills. A bachelors degree in information technology, computer science, or a related field is preferred. Experience with AWS or Microsoft Azure, cloud deployment of blockchain applications, enterprise financial services platforms, modern DevOps practices, cloud-native architectures, and emerging Web3 technologies is preferred. We value excellent communication, interpersonal, analytical, organizational, and documentation skills. We need the ability to work independently and collaboratively, lead and mentor others, manage multiple priorities, and adapt quickly in fast-moving enterprise environments. Responsibilities: We architect, develop, and deploy decentralized applications with permissioned access to enterprise data. We design, implement, and support secure, scalable, and reliable blockchain networks. We build and interact with smart contracts across leading blockchain and distributed ledger platforms. We design blockchain protocols and application features. We develop oracle solutions that connect off-chain data sources to blockchain networks. We create integration libraries and APIs for enterprise systems and backend services. We engineer secure, fault-tolerant, and highly scalable blockchain solutions. We partner with engineering teams to define requirements, estimate effort, and deliver high-quality outcomes. We contribute to architecture reviews and technical design discussions. We mentor development teams on blockchain best practices and emerging technologies. We prepare and maintain technical documentation for blockchain development processes. We ensure compliance with digital payment security and data protection regulations. We deploy and manage applications through CI/CD pipelines and cloud platforms. We stay informed on new blockchain technologies, cryptographic methods, and cybersecurity trends. Technologies: API AWS Architect Azure Backend Blockchain CI/CD Cloud Cryptography DApps DevOps Support Java Oracle Python Rust Security Solidity Spring Spring Boot Web3 NodeJS Golang More: We are Northern Trust, hiring for a Senior Blockchain Developer role based in Chicago, IL on a 13-month W2 contract. We are seeking an experienced professional to help us build secure, enterprise-grade blockchain solutions, including dApps, smart contracts, integrations, and distributed ledger capabilities. Our team values strong technical depth, collaboration, and the ability to deliver resilient systems in a fast-paced environment. last updated 25 week of 2026