Are you a talented JavaScript Engineer looking to make a significant impact in the energy space? Join a fast-growing start-up, which recently secured 500,000 in funding and has ambitious plans to expand across Europe and the US within the next few months! My client is seeking a skilled Mid/Lead JavaScript Engineer to be the first engineering hire, working alongside a visionary CTO to build innovative software solutions that enable companies to reduce their energy consumption by up to 20%.As a Mid/Lead JavaScript Engineer, you will have a unique opportunity to learn and grow under the guidance of the CTO while eventually transitioning into a leadership role. Your contributions will be instrumental in shaping the engineering team and setting the standards for future recruits. If you thrive on autonomy and want to play a pivotal part in a dynamic start-up environment, this role is tailor-made for you!Responsibilities:Participate in the full Software Development life cycle, collaborating closely with the CTOContribute to building the product roadmap and executing it effectivelyEngage in recruitment activities to expand the engineering teamPerform code reviews and provide constructive feedback to improve code qualityContribute to product design and architecture decisionsDevelop robust and interactive websites and web applicationsUtilize frontend technologies such as VueJS, NuxtJS, React, or AngularApply backend experience with NextJS, Express, or KoaDemonstrate expertise in JavaScript, with some knowledge of TypescriptIntegrate with external REST APIs and implement GraphQL solutionsWrite comprehensive unit, integration, and end-to-end tests to ensure code qualityWhat they are looking for:Proven experience in building and developing robust and interactive websites and web applicationsProficiency in frontend technologies such as VueJS, NuxtJS, React, or AngularBackend experience with at least one of NextJS, Express, or KoaStrong command of JavaScript, with working knowledge of TypescriptFamiliarity with the integration of external REST APIs and experience in writing GraphQLAbility to write unit, integration, and end-to-end tests for quality assuranceWhat’s on offer:Competitive salary up to 80,000 per yearShare options in a promising start-upFully remote working arrangementPhone: 0207 265 7800Email: ##### Digital are acting as an employment agency for this vacancy. To find out more about RedCat’s Privacy Policy and how your application is processed, please visit the following page: Privacy Policy.We are committed to creating a diverse and inclusive environment for ourselves and our clients. All qualified applicants will receive consideration for employment without regard to race, colour, religion, gender, gender identity/expression, sexual orientation, natural origin, genetics, disability, or age.