# Semaphore/ZK-Groups candidate What We’re Looking For: * (5) Demonstrable experience of full-stack development (preferebly at least 3 years) * (5) Expert in JavaScript, Typescript, Node.js, git & command-line environment * (5) Experience in React (Nest.js is a plus) and testing techniques * (3) Experience with Docker and hosting backend services on AWS * (3) Experience with CI/CD tools (e.g. Github Actions) * (5) Familiarity with modern software architecture techniques for building modular and testable applications and for creating high quality and efficient code * (3) At least basic knowledge of Ethereum and blockchain concepts in general (Blocks, Transactions, SHA3) * (2) Basic knowledge of how smart contracts work We’d Also Like to See: * Love for open source code, Ethereum and privacy * Self-motivated, seld-directed & experience in working with small teams * Experience building applications that interact with blockchains > Priority for skill from 1 to 5