Senior Software Engineering Manager (Global Billing, Payments & API)

About the Position

Senior Software Engineering Manager (Global Billing, Payments & API)

Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination. We help energy companies overcome today’s challenges while accelerating the shift to a clean, electrified future.

Our platform orchestrates millions of real-time decisions across homes, devices, markets and grids. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable, affordable and adaptive to everyday life.

With teams across Europe, North America, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan, we power leading companies including OVO, AGL and ENGIE, as well as innovators like Volvo and Volkswagen.

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Responsibilities

Kaluza runs the billing and payments engine behind some of the world's biggest energy retailers. Every bill sent and every payment collected across Kaluza's markets increasingly runs through one shared core platform, and GBPA exists to build and run that core, so foundational billing and payments capability gets built once and reused everywhere, rather than rebuilt separately for every new market or client relationship.

That matters because of where Kaluza is headed: as we grow into new markets and take on more of the world's largest energy retailers as clients, rebuilding core billing and payments capability separately for each one is slower, costlier, and more error-prone than building it once and configuring it at the edge. Getting this right directly shapes how fast Kaluza can bring new markets and clients onto the platform, and how reliable that platform is once they're on it.

We're also in the middle of reorganising how this part of the business works, moving from building billing and payments capability separately per area toward one shared global core that every area configures rather than rebuilds. Senior Engineering Managers across GBPA sit at the centre of that shift, each owning two domains rather than a single team. Responsibilities include:

• Lead engineering across two GBPA domains through complex, ambiguous, cross-squad initiatives.
• Own technical and product strategy across both domains simultaneously.
• Diagnose systemic and organisational issues using deep domain knowledge.
• Manage cross-functional stakeholders across Product, Delivery, and adjacent engineering teams.
• Carry full people-leader ownership for both teams.
• Operate in a high-integrity data domain (billing and payments).

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Requirements

• Proven track record leading engineering team(s) through complex, ambiguous, cross-squad initiatives.
• Experience owning technical and product strategy across multiple domains.
• Track record of diagnosing systemic or organisational issues and resolving them.
• Strong cross-functional stakeholder manager.
• Full people-leader experience.
• Comfortable operating in a high-integrity data domain.
• Demonstrable record of applying AI/LLMs to deliver customer impact.
• Customer obsession and a working-backwards practice.
• Successfully navigated complex stakeholder and leadership dynamics.

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Nice to Have

• Direct experience in billing, payments, or API platform domains.
• Experience operating a "global core, configurable edge" or multi-market platform model.
• Experience mentoring senior engineers toward people-leadership roles.

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We Offer

• Competitive salary: £100,000 - £125,000
• Flexible working with an expectation of 3 days a week in the office.
• Pension Scheme
• Discretionary Bonus Scheme
• Private Medical Insurance + Virtual GP
• Life Assurance
• Access to Furthr - a Climate Action app
• Free Mortgage Advice and Eye Tests
• Perks at Work - access to thousands of retail discounts
• 5% Flex Fund
• 26 days holiday
• Progressive Leave Policy
• Personal Learning Budget
• Home Office Budget

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About the Company

Kaluza is committed to building a diverse, global team and our sponsorship policy is evaluated on a role-by-role basis. We encourage you to keep an eye on our careers site to stay informed about future opportunities where we are able to offer visa sponsorship.

Here at Kaluza we have five core values that guide us as a business: Play to win, Solve the real problem, Build trust every day, Own the outcome, Go further together.

We’re keen to meet people from all walks of life - our view is that the more inclusive we are, the better our work will be. We want to build teams which represent a variety of experiences, perspectives and skills, and we recognise talent on the basis of merit and potential.

If you're excited about joining us and think you have some of what we're looking for, even if you're not 100% sure, we'd still love to hear from you.

Find out more about working in Kaluza on our careers page and LinkedIn.