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Full Stack Software Engineer - Bitcoin DeFi at IO Global. Who are we?. IOG, is a technology company focused on Blockchain research and development. We are renowned for our scientific approach to blockchain development, emphasizing peer-reviewed research and formal methods to ensure security, scalability, and sustainability. Our projects include decentralized finance (DeFi), governance, and identity management, aiming to advance the capabilities and adoption of blockchain technology globally.. We invest in the unknown, applying our curiosity and desire for positive change to everything we do. By fueling creativity, innovation, and progress within our teams, our products and services are designed for people to be fearless, to be changemakers.. What is Bitcoin DeFi:. Bitcoin DeFi is about unlocking real utility for the world’s most trusted digital asset without ever compromising user control. For developers and innovators, this means finding a way to use Bitcoin in decentralized finance without forcing holders to hand their BTC to a third party. Until now, most attempts at Bitcoin DeFi have relied on “wrapped” tokens that essentially represent a promise – you send your BTC away and trust someone else to issue a proxy token on another chain. In all these custodial models, users effectively give up custody of their bitcoin to an intermediary in exchange for a tokenized representation. This status quo runs counter to Bitcoin’s core ethos of self-sovereignty and security.. What the role involves:. As a Full Stack Software Engineer at IOG, you’ll do more than just write code—you’ll help shape the future of technology. You’ll be building high-quality software that combines cutting-edge research with real-world market needs, turning innovative ideas into impactful products.. You won’t be working in isolation—our collaborative environment means you’ll partner with brilliant Technical Architects, Product and QA. Together, you’ll solve complex problems, deliver reliable systems, and push the boundaries of what’s possible in our industry.. . Develop and maintain high-quality software following Agile practices.. . Collaborate with teams across multiple time zones.. . Contribute to algorithm design and implementation of efficient, clean code.. . Write and maintain unit, property, and integration tests.. . Participate in peer code reviews to ensure quality and consistency.. . Troubleshoot, optimize, and upgrade legacy systems as well as new solutions.. . Integrate third-party libraries and APIs, and work with distributed and concurrent systems.. . Document your code and support technical writing for user manuals.. . Be available for critical issue resolution when required.. . Who you are:. . Strong experience (3+ years) in TypeScript/JavaScript for front-end and Rust for back-end.. . Proficiency with Rust and Cargo for back-end services and APIs.. . Solid understanding of backend architecture, security practices, and database integration (SQL/NoSQL).. . Practical experience with modern front-end frameworks (React, Vue, etc.), HTML, CSS, SASS/LESS.. . Hands-on experience with build tools (NPM, Webpack, Gulp).. . Knowledge of Docker and containerized deployment.. . Comfortable with Git workflow, Agile processes, and cross-team collaboration.. . Understanding of both functional and object-oriented programming paradigms.. . Ability to troubleshoot and optimize performance across client and server systems.. . Nice to Have. . A degree in Computer Science or a related field.. . Awareness of UX and accessibility principles, with the ability to collaborate closely with designers.. . Company Location: United Kingdom.