Senior Frontend Engineer

About the role

We're making energy fair, clean, and simple for all using technology. Octopus Energy started with a bold idea: to build Britain’s first truly digital energy supplier. By combining world-class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we made it happen and in 2025, we became Britain’s largest energy supplier. Octopus Energy Group is a global energy transition collective. 10 businesses working across 4 continents to tackle energy transformation at nearly every front. And we constantly push to make energy better. Tirelessly campaigning for fair protections for customers.

What you’ll do

• Acting as the flexibility team’s first frontend engineer, establish the team’s frontend capability, lead the team’s frontend technical direction and represent the team to the cross-team community of frontend engineers
• Build and own a diverse range of customer-facing user journeys, enabling customers to onboard, control, and analyse their low carbon tech
• Build and own internal-facing interfaces for stakeholder-collaborators and experimental prototypes
• Interface with established mobile teams by providing WebViews for emerging mobile customer journeys
• Collaborate with our internal design team to integrate our designs into the wider Octopus design system ‘Coral’
• Carry out product discovery by working closely with our Product Manager and stakeholders from across the organisation
• Build highly reusable interfaces that enable rapid response to new opportunities