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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!


  • Participate in the full Software Development life cycle, collaborating closely with the CTO
  • Contribute to building the product roadmap and executing it effectively
  • Engage in recruitment activities to expand the engineering team
  • Perform code reviews and provide constructive feedback to improve code quality
  • Contribute to product design and architecture decisions
  • Develop robust and interactive websites and web applications
  • Utilize frontend technologies such as VueJS, NuxtJS, React, or Angular
  • Apply backend experience with NextJS, Express, or Koa
  • Demonstrate expertise in JavaScript, with some knowledge of Typescript
  • Integrate with external REST APIs and implement GraphQL solutions
  • Write comprehensive unit, integration, and end-to-end tests to ensure code quality

What they are looking for:

  • Proven experience in building and developing robust and interactive websites and web applications
  • Proficiency in frontend technologies such as VueJS, NuxtJS, React, or Angular
  • Backend experience with at least one of NextJS, Express, or Koa
  • Strong command of JavaScript, with working knowledge of Typescript
  • Familiarity with the integration of external REST APIs and experience in writing GraphQL
  • Ability to write unit, integration, and end-to-end tests for quality assurance

What’s on offer:

  • Competitive salary up to £80,000 per year
  • Share options in a promising start-up
  • Fully remote working arrangement

Phone: 0207 265 7800


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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.

Matthew Horner

Consultant - Software Engineering