Software Engineer, Aether (London)
About Aether
Aether is building a comprehensive AI-driven platform for the built world. Our core software is used by solar , roofing and heat pump companies to deliver advanced 3D modeling, simulation, quoting, and financing tools – all in one powerful interface. We combine deep technical rigor with real-world utility, leveraging physics-based modeling, AI, and scalable infrastructure.
Founded by alumni of UC Berkeley, École Polytechnique, and ETH Zurich, we bring experience from leading energy and software companies.
Aether is a recent graduate of YCombinator, and has raised over $6M in funding.
Check us out: https://www.aethergtm.com
About the Role
We’re looking for an experienced Backend Engineer to take a lead role in developing our core platform. You’ll work closely with the founders and product team to architect and build high-performance APIs, structure complex business logic, and contribute to systems that simulate solar energy, manage 3D projects, and power customer proposals.
This isn’t a feature-factory job – you’ll own major parts of the backend, help shape system design, and solve difficult problems from day one. Ideal candidates are scrappy, fast, and thoughtful: you write elegant code, fix problems at the root, and care about building software that lasts.
Who You Are
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You thrive in early-stage, fast-moving environments.
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You are technically sharp, deeply curious, and own outcomes.
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You know when to ship fast and when to be rigorous.
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You love solving real-world problems and optimizing complex systems.
Required Qualifications
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3+ years of backend experience in a production environment
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Strong proficiency in Python and Django (or equivalent frameworks)
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Deep understanding of relational databases and data modeling (PostgreSQL preferred)
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Experience building and scaling REST APIs
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Familiarity with cloud platforms (GCP preferred), containers, CI/CD
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Fluent in English, with excellent written and verbal communication
Nice to Have
We don’t expect you to check every box, but the more of these you bring, the better:
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Background in engineering, physics, math, or computational science
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Experience with asynchronous tasks (Celery, task queues), Redis, and performance optimization
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Familiarity with solar energy systems, CAD/3D modeling, or simulation software
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Strong debugging skills and architectural instincts
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Comfort working with modern frontend stacks (React/Next.js) or APIs consumed by them
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Experience building B2B SaaS tools, quoting systems, or real-time apps
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Contributions to infrastructure/DevOps, Pulumi, or observability tools
Why Join Aether
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You’ll work directly with experienced founders on ambitious technical challenges
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You’ll be part of a mission-driven company shaping the future of energy and the built world
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You’ll have autonomy and impact from day one – we ship fast and iterate constantly
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London-based office, with flexibility for hybrid/remote if you're a strong independent operator
How to Apply
Send us your resume and a short note about why you're interested. Bonus if you include links to past work (GitHub, portfolio, blog, etc). We move quickly.
Software Engineer, Back-End in London employer: Aether
Aether is an exceptional employer located in the vibrant city of Oxford, offering a unique opportunity to work within a passionate team dedicated to tackling climate change and environmental issues. With a strong focus on employee well-being, professional development, and a collaborative work culture, Aether provides a supportive environment where your contributions truly matter. Enjoy the flexibility of hybrid working options, generous pension contributions, and the chance to engage in meaningful projects that promote a healthier planet.
