Kaluza

Staff Engineer (Global Billing, Payments & API)

Kaluza
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14 hours ago
Edinburgh, United Kingdom +2 moreStaff+

Responsibilities

  • Own system design and architecture for the API Platform and Standards squad.
  • Create and challenge product and engineering proposals using data-backed design trade-offs.
  • Diagnose and resolve complex technical and product issues, including beyond the immediate domain.
  • Establish architectural patterns and technical standards adopted by other engineering teams.
  • Turn ambiguous technical requirements into concrete execution plans.
  • Influence engineering leadership, product, and adjacent squads on technical direction.
  • Mentor and upskill engineers beyond the immediate team and contribute to a broader learning culture.

Requirements

  • Deep technical expertise in system design and architecture ownership across a squad.
  • Experience creating and challenging proposals and making data-backed design trade-offs.
  • A track record of resolving complex technical and product problems across domains.
  • Experience establishing and driving adoption of architectural patterns and technical standards.
  • Ability to turn loosely defined requirements into executable plans and align senior stakeholders.
  • Experience mentoring and upskilling engineers across teams.
  • Comfort operating in billing or payments environments requiring reliability, security, and auditability.
  • Demonstrable customer-focused, working-backwards product development practice.
  • A demonstrable record of applying AI or LLMs to deliver customer impact.
  • API gateway, API versioning, or developer-experience standards experience at scale is advantageous.
  • Billing, payments, financial-services, or global-core/configurable-edge platform experience is advantageous.

Benefits

  • Hybrid working in London, Bristol, or Edinburgh, with an expectation of at least three office days per week.
  • Pension scheme, discretionary bonus scheme, private medical insurance, virtual GP, and life assurance.
  • Climate action app access, free mortgage advice, eye tests, and retail discounts through Perks at Work.
  • 5% Flex Fund, 26 days of holiday, progressive family leave, personal learning budget, and home office budget.

Categories

Kaluza

About Kaluza

501-1,000 employees

Kaluza builds an energy software platform for utilities and suppliers to run billing, smart EV charging, and real-time demand response across homes, devices, markets and grids. It sells its platform and services to energy companies and OEM partners; customers include OVO, AGL and ENGIE, with collaborations with Volvo and Volkswagen. Headquartered in London and B Corp‑certified, Kaluza operates across Europe, North America, Asia and Australia, including a joint venture with Mitsubishi in Japan.

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