1 to 25 of 81 Remote/Hybrid Smart Contracts Jobs

Blockchain Security Architect, you will: Perform security architecture reviews for blockchain, distributed ledger, tokenization, and digital asset initiatives. Assess blockchain platforms, smart contracts, decentralized applications, and supporting infrastructure for security risks and design weaknesses. Partner with engineering, cloud, application, and cybersecurity teams to develop secure blockchain architecture … patterns and security controls. Conduct threat modeling and security assessments for blockchain platforms, smart contracts, digital asset custody solutions, and supporting services. Define security requirements for cryptographic key management, wallet security, node security, consensus mechanisms, and cross-chain integrations. Evaluate third-party blockchain platforms, vendors, and service ...

design, development, and deployment of Web3-native components and integrations that power Citi's digital asset infrastructure — spanning tokenization, smart contracts, on-chain settlement, and blockchain protocol integrations. You will work within a collaborative, globally distributed team of engineers, architects, and business technologists who are building … with enterprise-grade software standards. Key ResponsibilitiesDesign, develop, and deploy Web3 components and integrations for Citi's Digital Asset Platform, including smart contracts, on-chain event listeners, wallet integrations, and blockchain protocol connectorsBuild and maintain backend services that interface with public and permissioned blockchain networks (e.g., Ethereum ...

design, development, and deployment of Web3-native components and integrations that power Citi's digital asset infrastructure - spanning tokenization, smart contracts, on-chain settlement, and blockchain protocol integrations. You will work within a collaborative, globally distributed team of engineers, architects, and business technologists who are building … enterprise-grade software standards. Key Responsibilities Design, develop, and deploy Web3 components and integrations for Citi's Digital Asset Platform, including smart contracts, on-chain event listeners, wallet integrations, and blockchain protocol connectors Build and maintain backend services that interface with public and permissioned blockchain networks (e.g. ...

other engineering teams to deliver core banking capabilities across Lending and Savings. Key Responsibilities Design, develop and maintain Thought Machine Vault Smart Contracts for Lending and Savings products and associated product features. Translate business and product requirements into scalable and maintainable Smart Contract implementations. Develop … Product Owners to clarify requirements, identify edge cases and define expected product behaviour. Collaborate with architecture and engineering teams to ensure Smart Contracts integrate correctly with surrounding services and platforms. Develop comprehensive automated tests covering product rules, scenarios, boundary conditions and regression behaviour. Participate in code reviews ...

engineers, product managers and client stakeholders to deliver secure, scalable and high-performance decentralised applications. Key Responsibilities Design, develop and deploy smart contracts and decentralised applications across Ethereum, Hedera, Algorand and proprietary blockchain infrastructure. Develop blockchain solutions tailored to financial services and capital markets clients. Contribute … support delivery. About You Hands-on experience working with security tokens on distributed ledgers. Proven experience developing and deploying Ethereum smart contracts using Solidity. Experience with Hedera (Solidity/Hedera Token Service) or Algorand (PyTEAL/TEAL/ARC standards). Strong understanding of blockchain fundamentals, including ...

engineers, product managers and client stakeholders to deliver secure, scalable and high-performance decentralised applications. Key Responsibilities Design, develop and deploy smart contracts and decentralised applications across Ethereum, Hedera, Algorand and proprietary blockchain infrastructure. Develop blockchain solutions tailored to financial services and capital markets clients. Contribute … support delivery. About You Hands-on experience working with security tokens on distributed ledgers. Proven experience developing and deploying Ethereum smart contracts using Solidity . Experience with Hedera (Solidity/Hedera Token Service) or Algorand (PyTEAL/TEAL/ARC standards). Strong understanding of blockchain fundamentals ...

node connectivity, transaction submission, on‐chain event monitoring, and wallet interactions — using enterprise Java and Web3 libraries Write, test, and deploy smart contracts in Solidity or equivalent languages, following established security and quality standards Build and maintain APIs and microservices that expose blockchain functionality to upstream platform … Scrum is a plus Competencies/Skills Blockchain Development Proficiency: Practical, hands‐on ability to develop software that interacts with blockchain networks — from smart contract deployment to on‐chain/off‐chain data integration Strong Software Engineering Fundamentals: Solid command of data structures, algorithms, design patterns, and software ...

node connectivity, transaction submission, on-chain event monitoring, and wallet interactions — using enterprise Java and Web3 libraries* **Write, test, and deploy smart contracts** in Solidity or equivalent languages, following established security and quality standards* **Build and maintain APIs and microservices** that expose blockchain functionality to upstream platform … Scrum is a plus**Competencies/Skills*** **Blockchain Development Proficiency:** Practical, hands-on ability to develop software that interacts with blockchain networks — from smart contract deployment to on-chain/off-chain data integration* **Strong Software Engineering Fundamentals:** Solid command of data structures, algorithms, design patterns, and software ...

Platform. API Integration: Develop and consume RESTful or GraphQL APIs to connect different components of the ecosystem. Decentralized Technologies: Work with blockchain and smart contract technologies to create Web3 solutions. Collaboration: Work closely with designers, project managers, and other engineers to meet project goals. Code Quality: Ensure ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...

high-throughput event data from blockchains and financial markets. Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs). Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting. Secure … Experience with event-driven architecture and tools like Kafka Comfort working with gRPC, Protocol Buffers, and microservices Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus Solid experience with WebSockets and real-time messaging systems Proven ability to design ...