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Lunar Energy Logo Lunar Energy · IT - Software Development

Senior Software Engineer - Internal Tools

United Kingdom · Job Posted December 10, 2025

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Job Description

At Lunar Energy, we're on a mission to transform the way we power our homes by building an ecosystem of all-electric products, starting with a next-generation home battery system and a cloud PaaS to manage large fleets of Distributed Energy Resources (DER) assets. Comprising a team of visionary entrepreneurs and dedicated technology and industry experts, we're united by our shared vision of deploying and building products to electrify homes that are connected through an integrated software platform. We are seeking a Senior Software Engineer to work on our internal engineering ecosystem. You will join a focused, collaborative team that designs and builds high-leverage tools and automation that directly multiply the productivity of our cross-atlantic teams, ensuring we succeed in our mission.

Job Responsibility

  • Developing software tools to manage internal processes such as production lines, hardware procurement or component design
  • Work across multiple teams in the organisation to gather requirements, architect and deliver end-to-end software tools and cloud services used by the Lunar teams
  • Define data access patterns and storage models for internal databases and processes, including the company Data Lake, to enhance their efficiency

Requirements

  • Good experience in developing Python
  • Good experience using relational databases
  • Good experience using infrastructure as code
  • Experience with Data Warehousing and Data Lakes
  • Experience integrating internal systems and processes with third-party APIs
  • A proven track record of at least 3 years’ of developing and architecting software, encompassing the full lifecycle from prototype to production
  • Ability to gather requirements from non-technical users and use them to drive the development of end-to-end solutions

Nice to have

  • Good experience with backend TypeScript or another statically typed language
  • Direct experience with functional programming
  • Good experience with Postgres
  • Good experience using CloudFormation and AWS
  • Interest in the energy sector or IoT

What we offer

  • Competitive salary and stock options package
  • Private Medical Insurance scheme through BUPA (medical history disregarded)
  • A wellbeing and lifestyle benefits plan through Medicash
  • 5% employer contributions pension matching
  • A budget for work-related training of £1,000 per financial year and an allowance of 4 training days
  • Cycle To Work scheme and Workplace Nursery benefit
  • Access to Spill - Mental Health Support platform
  • Enhanced Maternity + Paternity Pay
  • 25 days annual holiday entitlement + 8 Bank Holidays
  • Flexible start and finish times, fully remote working or hybrid depending on preferences
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