Kaluza on cord

Kaluza

Staff Engineer

External position
Hiring internally for Kaluza?
EnviroTech · Software Development
The intelligent software platform powering the future of energy.
Active
over 6 months ago
Posted
4 days ago
Checked
cord regularly checks that external positions are still open
2 days ago

Skills & Experience

Job roles: Back End
Experience level: Senior, Lead
Core skills considered: APIs, System Configuration, Software Architecture, Cloud Computing, Agile
Other skills considered: Scrum, Data Analysis, Artificial Intelligence, Machine Learning, Technical Direction

Logistics

Base salary: £95K - £120K
Employment type: Permanent
Remote working: Hybrid (up to 2 remote days p/w)
Visa sponsorship: Not available

Job Description

Kaluza runs the billing and payments engine behind some of the world's biggest energy retailers. This role builds and evolves the platform other engineering teams build on top of: the shared APIs, integration patterns, and technical standards that let billing and payments capability get built once and reused everywhere, instead of 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, having a consistent, well-designed API platform is what lets new capability get adopted quickly and safely across every team that needs it, rather than each team solving integration and standards problems on its own. Getting this right directly shapes how fast Kaluza can extend billing and payments capability to new markets and clients.

We're also in the middle of reorganising how this part of the business works, moving toward one shared global core that every market configures rather than rebuilds. This role's remit, API platform and standards, is one of the technical foundations that shift depends on.


Responsibilities

  • You'll own system design and architecture for the API Platform and Standards squad, not just a single service.
  • You'll create and challenge product and engineering proposals, backing design trade-offs with data.
  • You'll diagnose and resolve complex technical and product issues, including in areas outside your immediate domain.
  • You'll establish architectural patterns and technical standards that other teams build on top of.
  • You'll take ambiguous, loosely-defined technical requirements and turn them into a concrete plan others can execute against.
  • You'll influence engineering leadership, product, and adjacent squads to bring clarity and alignment on technical direction.
  • You'll mentor and upskill engineers beyond your immediate team, contributing to a wider learning culture.

Requirements

  • Have deep technical expertise applied to system design and architecture ownership across a squad, not just a single team or service.
  • Be able to create and challenge product and engineering proposals and make design trade-offs, backed by data.
  • Have a track record diagnosing and resolving complex technical and product issues, including in domains you aren't already close to.
  • Be skilled at establishing and driving adoption of architectural patterns and technical standards that other teams build on top of.
  • Be comfortable taking ambiguous, loosely-defined technical requirements and turning them into a concrete plan others can execute against.
  • Be accomplished at influencing both upwards and outwards, bringing clarity and alignment to engineering leadership, product, and adjacent squads on technical direction.
  • Have a track record mentoring and upskilling other engineers, and fostering a learning culture beyond your own immediate team.
  • Be comfortable operating in a high-integrity data domain (billing or payments), where reliability, security, and auditability come before speed.
  • Have demonstrable customer obsession and a working-backwards practice: start from the problem other engineering teams or end customers have, and design the simplest platform capability that solves it.
  • Have a demonstrable record of applying AI/LLMs to deliver customer impact, not just adopting AI tooling internally.

What will set you apart

  • Direct experience with API gateway, versioning, or developer-experience standards work at scale.
  • Direct experience in billing, payments, or financial-services 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).

Company Benefits

Core Benefits:
  • Life Assurance
  • Private Medical Insurance
  • Virtual GP
  • Employee Assistance Programme
  • Mortgage Advice
Flex Benefits:
  • Health and Wellbeing
  • Finance and Protection
  • Green Benefits
  • Lifestyle
Progressive Policies:
  • Flexible UK Bank Holidays
  • Family Leave
  • Sick Pay
  • Compassionate and Bereavement Leave
  • Moments That Matter Leave
  • Career Break
Staff Engineer at Kaluza
Position posted 4 days ago

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Starling Bank on cord

Starling Bank

Full Stack Engineer (ML Ops)

London, UK
FinTech · Banking · Finance
A better bank for everyone
Active
over 6 months ago
Responds to
0% of requests
Responds in
1h 55m
Requests
7 pending

Skills & Experience

Job roles: Full Stack
Experience level: Mid, Senior
Core skills considered: Java, React, Redux, AWS, JavaScript

Logistics

Base salary: £70K - £110K
Employment type: Permanent
Remote working: Hybrid (up to 2 remote days p/w)
Visa sponsorship: Not available

Job Description

Starling is the UK’s first and leading digital bank on a mission to fix banking! Our vision is fast technology, fair service, and honest values. All at the tap of a phone, all the time.

Starling is the UK’s first and leading digital bank on a mission to fix banking! We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way.

We’re a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. We’re a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices.

Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech. We operate a flat structure to empower you to make decisions regardless of what your primary responsibilities may be, innovation and collaboration will be at the core of everything you do. Help is never far away in our open culture, you will find support in your team and from across the business, we are in this together!

The way to thrive and shine within Starling is to be a self-driven individual and be able to take full ownership of everything around you: From building things, designing, discovering, to sharing knowledge with your colleagues and making sure all processes are efficient and productive to deliver the best possible results for our customers. Our purpose is underpinned by five Starling values: Listen, Keep It Simple, Do The Right Thing, Own It, and Aim For Greatness.

Hybrid Working

We have a Hybrid approach to working here at Starling - our preference is that you're located within a commutable distance of one of our offices so that we're able to interact and collaborate in person. We don't like to mandate how much you visit the office and work from home, that's to be agreed upon between you and your manager.

Our Data Environment

Our Data teams are excited about the value of data within the business, powers our product decisions to improve things for our customers and enhance effective and agile decision making, regardless of what their primary tech stack may be. Hear from the team in our latest blogs or our case studies with Women in Tech.

We are looking for talented data professionals at all levels to join the team. We value people being engaged and caring about customers, caring about the code they write and the contribution they make to Starling. People with a broad ability to apply themselves to a multitude of problems and challenges, who can work across teams do great things here at Starling, to continue changing banking for good.

Requirements

We have built our entire banking platform in house and mostly in Java. We are looking for people who want to work on building the tooling that is used by our engineers on a daily basis.

We are looking for people who are truly full stack, and are as comfortable polishing their javascript front end as they are debugging the innards of their java applications database interactions, or standing up infrastructure with terraform. We are looking for people who can:

  • Design REST apis.
  • Code backend services, ideally using Java, or another other server side compiled language.
  • Develop modern front ends, ideally using React and Redux.
  • Get their code into the cloud and support it there, ideally on AWS.
  • Believe in clean coding, simple solutions, automated testing and continuous deployment.
  • Like to take ownership of a feature from the original idea through to live.
  • Think (like us) that a small number of empowered developers is the right way to deliver software.

Company Benefits

  • 33 days holiday (including flexible bank holidays)
  • An extra day’s holiday for your birthday
  • 16 hours paid volunteering time a year
  • Part-time and/or flexible hours available for most roles
  • Salary sacrifice, company enhanced pension scheme
  • Life insurance at 4x your salary
  • Hybrid/remote working
  • Private Medical Insurance with VitalityHealth including mental health support and cancer care. Partner benefits include discounts with Waitrose, Mr&Mrs Smith and Peloton
  • Generous family-friendly policies
  • Varied social groups set up and run by our employees
  • Perkbox membership giving access to retail discounts, a wellness platform for physical and mental health, and weekly free and boosted perks
  • Access to initiatives like Cycle to Work, Salary Sacrificed Gym partnerships and Electric Vehicle (EV) leasing

Full details are available on our careers site

Interview Process

Interviewing is a two way process and we want you to have the time and opportunity to get to know us, as much as we are getting to know you! Our interviews are conversational and we want to get the best from you, so come with questions and be curious. In general you can expect the below, following a chat with one of our Talent Team:

  • Stage 1 - 30 mins with one of the team
  • Stage 2 - Take home challenge
  • Stage 3 - 90 mins technical interview with two team members
  • Stage 3 - 45 min final with an executive and a member of the people team
Alex Yeates on cord
Message Alex Yeates at Starling Bank
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