Senior Software Engineering Manager

Who you are

• Have a proven track record leading engineering team(s) through complex, ambiguous, cross-squad initiatives — not single-team delivery
• Have experience owning technical and product strategy across multiple domains or services simultaneously
• Have a track record of diagnosing systemic or organisational issues and resolving them with deep domain knowledge, not just fixing team-level technical problems
• Be a strong cross-functional stakeholder manager, working with Product, Delivery, and adjacent engineering teams to align roadmap and trade-offs
• Have full people-leader experience: goal-setting, performance and pay conversations, hiring and recruitment for the team(s) you lead
• Be comfortable operating in a high-integrity data domain (billing or payments), where quality and reconciliation matter as much as delivery speed
• Have a demonstrable record of applying AI/LLMs to deliver customer impact, not just adopting AI tooling internally
• Have demonstrable customer obsession and a working-backwards practice: start from the customer problem and ship the simplest solution that solves it, rather than the most sophisticated one available
• Have a track record of successfully navigating complex stakeholder and leadership dynamics, influencing the wider organisation beyond your direct scope to improve product quality and team experience
• Direct experience in billing, payments, or API platform domains
• Experience operating a "global core, configurable edge" or multi-market platform model (one engine, configuration at the edge, no client-specific forks of core logic)
• Experience mentoring senior engineers toward people-leadership roles
• We understand some people may not apply for jobs unless they tick every box. But 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

What the job involves

• 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:
• You'll lead engineering across two GBPA domains through complex, ambiguous, cross-squad initiatives
• You'll own technical and product strategy across both domains simultaneously, rather than handing strategy off to a single team
• You'll diagnose systemic and organisational issues using deep domain knowledge, not just resolve team-level technical problems
• You'll manage cross-functional stakeholders across Product, Delivery, and adjacent engineering teams to align roadmap and trade-offs
• You'll carry full people-leader ownership for both teams: goal-setting, performance and pay conversations, hiring and recruitment
• You'll operate in a high-integrity data domain (billing and payments) where reliability and reconciliation come before speed

Benefits

• Progressive leave policies - including leave dedicated to the moments that matter to you the most
• Annual discretionary bonus
• Dedicated personal learning and home office budgets
• Flexible working — we trust you to work in a way that suits your lifestyle
• 26 days holiday
• Kaluza Share Scheme