Engineering

Staff Engineer (Global Billing, Payments & API)

Kaluza · Bristol, Edinburgh +1

Kaluza builds the software energy suppliers like OVO, AGL and ENGIE use to run their businesses and move to clean energy. This staff engineer leads design for the API Platform and Standards squad, shaping the shared APIs and integration patterns that every billing and payments team builds on as Kaluza moves to one global core.

Apply on Kaluza

Company: Kaluza
Where: Bristol, Edinburgh +1
Function: Engineering
Posted: 5 weeks ago

The role

What you’ll do

Own system design and architecture for the API Platform and Standards squad
Set technical standards that other billing and payments teams adopt
Turn vague requirements into clear plans and win support from leaders and nearby teams
Mentor engineers well beyond your own squad

What you’ll need

Deep system design expertise and a record of untangling hard technical problems
Experience getting architectural changes adopted across teams
Comfort in high-integrity domains such as billing or payments
A track record of using AI or LLMs to deliver real customer impact

Good to know: £97,000 to £122,000 plus discretionary bonus. Hybrid from London, Bristol or Edinburgh, three or more office days a week. No visa sponsorship; UK right to work needed.