3,145 Crypto & Web3 jobs
Open tech roles at companies in crypto, blockchain and web3.
Blockchain Backend Engineer - Secure APIs & Smart Contracts
Placements24 is hiring a Backend Blockchain Developer in East London, South Africa to design backend services and APIs that securely interact with blockchain networks, implement smart contracts, and support scalable financial applications. Requires strong Go/Node.js/Python/Java skills plus cloud and containerization experience.
Director of Software Engineering
Lead a distributed team of backend engineers supporting BIT's (formerly Matrixport) crypto asset-management systems, owning the technical roadmap, engineering standards, and delivery quality. Core stack: Golang or Rust, MySQL, AWS, and large-scale distributed systems.
Senior Software Engineer - Detection
At Hypernative, a Web3 security company, you'll build and own real-time detection systems that identify malicious blockchain activity — designing and testing heuristics, analyzing large datasets, and running detection services in production. Core skills are Python and SQL with anomaly/scoring logic.
Senior Full Stack Engineer
Senior Full Stack Engineer at Hypernative, a proactive onchain security platform for institutions. You own end-to-end WebApp features, implementing both Node.js backend and React frontend components while shaping architecture in an early-stage product team working with product and design.
Full-Stack Engineer
Build and scale core components of a blockchain security platform using React/TypeScript (frontend) and Python (backend), owning features end-to-end.
Full Stack Developer (Blockchain)
Hybrid full stack developer role in Guadalajara building web applications that integrate blockchain functionality: frontend and backend development, smart contract design and integration, plus APIs and databases. Stack spans HTML/CSS/JavaScript with React/Angular/Vue, Node.js/Python/Java/Go, SQL/NoSQL, and Solidity with Truffle/Hardhat.
Senior DevOps Engineer: Multi-Cloud Platform Lead
First dedicated DevOps engineer at 0G, owning the multi-cloud platform end to end — from edge networking to cost management. Day to day: keeping Kubernetes clusters healthy across Google Cloud, Alibaba Cloud, and AWS, driving CI/CD (Jenkins/GitHub Actions/GitLab CI), and building IaC (Terraform/Pulumi), observability, security, and incident response.
Senior DevOps Engineer
Senior DevOps Engineer at Blockaid, a web3/on-chain security company based in Tel Aviv. The role designs and maintains scalable cloud infrastructure on AWS and GCP, builds CI/CD pipelines, monitors systems with Datadog, manages security/IAM, and shares on-call duty supporting development teams.
Senior Full-Stack Blockchain Developer (Remote)
Fully remote senior full-stack blockchain developer at a blockchain platform focused on digital identity and verifiable credentials. Day to day: build Solidity smart contracts, develop back-end services/APIs and responsive dApp front-ends, integrate them via Web3 libraries, and mentor junior developers on a distributed international team.
Remote Full-Stack Blockchain Developer
Fully remote role building blockchain-powered dApps end to end: designing and deploying smart contracts (Solidity/Ethereum), backend APIs (Node.js/Go/Python), and responsive front-ends (React/Vue). Seeks a developer with 4+ years of full-stack experience, including 2 years in blockchain.
Full Stack Blockchain Developer (Remote)
Fully remote full-stack blockchain developer building smart contracts, backend services/APIs, blockchain node infrastructure, and user-facing frontends for a tech-finance client in the crypto space. Core stack spans Solidity, Node.js/Python/Go, React/Vue/Angular, and web3 libraries like Web3.js and Ethers.js.
Full Stack Blockchain Developer
Fully remote full-stack blockchain developer building end-to-end dApps: writing smart contracts (Ethereum, Polygon, Solana), crafting front-end UIs, and building backend services/APIs. Listed by placement firm Placements24 for a crypto-focused client, with flexible hours and possible crypto-based pay.
Remote Blockchain Full-Stack Engineer — Smart Contracts
Placements24 is hiring a remote full-stack blockchain developer to design and build blockchain-based fintech applications, working across front-end and back-end and integrating smart contracts and Web3 technologies within a globally distributed team.
Remote Senior Backend Engineer: Blockchain API & Systems
Senior Backend Engineer at Placements24 designing, building, and maintaining backend systems that power core applications and blockchain integrations. Day to day involves implementing APIs, managing SQL/NoSQL data, and optimizing performance of scalable, secure services on cloud platforms.
Senior Backend Engineer - Blockchain Infrastructure
Senior Backend Engineer designing, building, and scaling high-performance backend services for blockchain infrastructure on a fully remote team. Core stack includes Go, Rust, or Node.js, APIs/microservices, cloud platforms, Docker/Kubernetes, and IaC with Terraform or Ansible.
Senior Backend Engineer - Blockchain Integration
Senior Backend Engineer building and maintaining backend systems that integrate core applications with blockchain protocols (Ethereum, Polygon, Solana) via APIs and microservices, for a company bridging traditional finance and blockchain. Fully remote role using Node.js, Python, or Go with SQL/NoSQL databases and cloud platforms.
Software Engineer II
Software Engineer II on Ripple's Financial Core team builds and ships backend services and internal tools that automate settlement, funding, and liquidity management across Ripple's global custodian network. The stack is Java/Spring Boot and Postgres on the backend, React/TypeScript for internal tools, deployed on Kubernetes.
Lead, Market Data Engineering (Crypto & TradFi)
Selby Jennings is hiring a senior Market Data Engineering Lead in London to own data strategy, governance and cost optimisation across crypto and traditional finance assets. They will lead a small team and build a central Market Data API ensuring data quality, security and performance for trading, research and risk platforms.
Real-Time Crypto Data Engineer | Backend & Analytics
Dormont Manufacturing Co is hiring a backend data engineer in London to design and scale real-time crypto analytics infrastructure. Day to day you build reliable, low-latency pipelines over high-throughput blockchain data, using strong backend engineering skills and familiarity with crypto technologies.