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- Nederland - Deutschland - España - Nederland - Deutschland - España Head of Performance Marketing & SEO With fifty percent market share and a processed volume of over one hundred billion euros in 2024, Bitvavo…
Senior Software Engineer on Anza's block production team, working on the Agave Solana client — designing, optimizing, and hardening the pipeline for block production, scheduling, and verification. Core stack is systems programming in Rust/C/C++ with distributed systems and performance engineering.
Senior engineer hardening Anza's Agave validator client and the broader Solana network: analyzing and debugging core blockchain code, building adversarial testing frameworks, and benchmarking performance and reliability improvements. Core work is systems programming (Rust/C++) on distributed systems and consensus.
Coinbag, a well-funded crypto startup building automated cross-chain crypto interest optimization, is hiring a fully remote Machine Learning Engineer. The role is language- and technology-agnostic: building ML/mathematical models, smart contracts, infrastructure, and security across a Scala, Node.js, Python, Haskell, and multi-blockchain stack.
At Coinbag, a well-funded crypto startup building automated cross-chain crypto interest optimization, full stack engineers work across every layer of the product — smart contracts (Solidity), backend services (Scala, Node.js, Python, Haskell), blockchain integrations, cost-efficient infrastructure, automation, and security.
Full-stack/blockchain engineer at Coinbag, a well-funded startup building automated cross-chain crypto interest optimization. You work across the entire codebase — smart contracts, infrastructure, automation, and security — in a language-agnostic way using Scala, Node.js, Python, Solidity, and Haskell across chains like Ethereum, Terra, Cardano, Solana, and more. 100% remote.
Job Description: Vice President Trading Engineering Role Note: Fidelity will not provide immigration sponsorship for this position The Role Vice President Trading Engineer will be working in development and delivery of…
Full-stack developer at Catallaxy, a Montreal blockchain consultancy, building web applications and APIs for blockchain products with Node.js, React and SQL/NoSQL databases. Day to day: design, develop and ship tested, scalable code while joining scrums, code reviews and tech-stack decisions.
Builds high-load full-stack products with Node.js/Express on the backend and React (Vite, Tailwind CSS, Zustand) on the frontend, backed by MySQL/PostgreSQL, Docker/Nginx infrastructure, Redis/RabbitMQ queues and real-time components (Socket.IO). Daily work spans undocumented/Telegram API integrations, security hardening and AI-assisted development with Claude/ChatGPT.
Full-stack developer building high-load systems with Node.js/Express backends and React/Vite frontends. Daily work spans MySQL/PostgreSQL optimization, real-time messaging (WebSocket, Socket.IO, Centrifugo), Docker/Nginx/Redis/RabbitMQ infrastructure, security hardening, and Telegram Bot API/TDLib integrations, with AI tools used in development.
Tetra Digital Group is Canada's leading institutional digital asset infrastructure provider, and right now, we're at an inflection point five years in the making. As Canada's first and only regulated…
Who We Are Tetra Digital Group is Canada's leading institutional digital asset infrastructure provider, and right now, we're at an inflection point five years in the making. As Canada's first and only…
Senior DevOps Engineer owning the AWS/Terraform platform, CI/CD, observability, incident response, and secrets/key management for a regulated Canadian digital asset custodian and its CAD stablecoin payment rail. The role emphasizes audit-ready infrastructure, compliance automation, and 24/7 reliability in a small high-ownership team.
Senior blockchain backend engineer on the VIMWorld ecosystem (hiring entity CREAM, LLC) in Las Vegas, designing NFT features and cross-chain architecture. Day to day is hands-on Solidity smart-contract development with a security focus, work across Ethereum, VeChain, and BSC, and leading integrations plus SDK builds for the platform's APIs.
Senior blockchain/backend engineer building VIMworld's smart NFT ecosystem: leading cross-chain integrations and token bridges, developing Solidity smart contracts, and building integration libraries/SDKs and APIs. Core stack includes VeChain, Ethereum, Binance Smart Chain, Solidity, TypeScript, Web3.js, React/React Native, and Unity.
Sr. Backend/Blockchain Engineer at CREAM, LLC (VIMworld) in Las Vegas building smart NFT product functionality and cross-chain integrations across VeChain, Ethereum, and Binance Smart Chain. Day to day: developing Solidity smart contracts, integration libraries/SDKs for servers and APIs, and leading technical roadmaps.
Builds and maintains high-load web platforms end to end: Node.js/Express backends with Sequelize, React/Vite/Tailwind frontends, and MySQL/PostgreSQL with heavy attention to transactions and concurrency. The role also covers Docker/Nginx/Redis/Elasticsearch/Prometheus infrastructure, real-time via WebSocket, security, Telegram integrations and daily AI-assisted development.
The 4 biggest blockchain strengths are also its weakness Permissionless nature leads to fragmentation of meaning Decentralization leads to too many standards Immutability leads to exponential data + query…
Executive role owning OpenZeppelin's entire information security program end-to-end: strategy and governance, SOC 2/ISO 27001 compliance, privacy (GDPR/CCPA), AI governance, incident response, bug bounty, and IT/identity infrastructure. Fully remote, supporting deepening enterprise and regulated financial clients.
Program Manager on OpenZeppelin's Customer Success team, owning end-to-end delivery of strategic client engagements — security audits, smart contract library work, and web3 tooling — from kickoff through renewal and expansion. Requires blockchain/smart-contract fluency, program governance rigor, and tools like GitHub, Notion, Linear, Slack, and HubSpot in a fully remote, async-first environment.
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