Engineer II, Kaluza
£53.5-72k
+ Discretionary Bonus Scheme
More information about location
1+ day a week in office
Intelligent software platform powering the future of energy
Be an early applicant
Intelligent software platform powering the future of energy
501-1000 employees
Be an early applicant
£53.5-72k
+ Discretionary Bonus Scheme
More information about location
1+ day a week in office
501-1000 employees
Company mission
To help decarbonise the world.
Role
Who you are
- Experience developing backend applications — ideally using TypeScript, or a strong interest in learning it
- Some familiarity with event-driven systems and message queues (e.g. Kafka, SQS)
- Hands-on experience with cloud technologies — AWS and serverless a plus
- Comfortable working with databases (SQL or NoSQL) and understanding trade-offs
- A collaborative team member who communicates clearly and enjoys solving problems together
- Curious and self-motivated — you seek out opportunities to learn and grow
- Passionate about writing high-quality software that makes a real difference to users
- Bonus: exposure to frontend development (e.g. React)
What the job involves
- Reporting to: Software Engineering Manager
- You'll be joining the Kaluza Technology community. We’re a large team of both data-led and product focused Software and Production Engineers, pushing the boundaries of technology and working at an extraordinary scale
- As a collective we strive for engineering greatness and by ensuring best practices across the board of the community
- More specifically, you’ll be working on Kaluza’s Energy Retail platform. This is a SaaS technology platform that aims to revolutionise the operating platforms for energy retailers globally. This platform has been built with scale and technical quality in mind and is the foundation for decarbonisation efforts by Kaluza’s customers
- Our tech stack is very fluid, but broadly you can find yourself working with:
- Typescript, Node JS, Terraform, Gitactions, Kubernetes, Docker, AWS, Kafka, GraphQL
- Contribute to the design, development, and maintenance of scalable backend services using TypeScript
- Help build event-driven systems that process data reliably and in real-time
- Collaborate with product managers, designers, and engineers to build thoughtful, user-focused features
- Write clean, maintainable code and participate in code reviews to support high engineering standards
- Take ownership of smaller services or components, contributing to their delivery, performance, and improvement
- Work with SQL or NoSQL databases to store and retrieve data effectively
- Build and deploy services using cloud platforms, particularly AWS and serverless infrastructure
- Share knowledge and contribute to a positive, inclusive team culture
Application process
- Our Software Engineering Interview Process:
- Initial call with our Talent Acquisition team (30 minutes)
- This short call is designed to tell you more about Kaluza and the specific team you’ll be joining, as well as to ensure that the role is the right fit for you
- First stage interview (1 hour minutes)
- This interview will be with a hiring manager from one of our engineering teams, this interview will cover both mindset and technical questions. We will also incorporate a 15 coding exercise, so have your screen ready to do some coding
- Final Interview Loop (3 hours)
- Three hours sounds like a long time, but we don’t expect all of these to be completed across one day, but we can support that if you so wish, the three sessions cover the following:
- Behavioural - We use behavioural interviews to understand how you collaborate, solve problems, and build value for customers through real-world examples
- System Design - Our system design interview explores how you approach complex, high-scale problems — from handling real-time data to building reliable, secure, and scalable systems
- Pairing - Our pairing interview focuses on problem-solving, clean code, and real-time collaboration — you'll work through a practical task with one of our engineers
Salary benchmarks
Our take
The energy landscape is one of the most dynamic and fast-evolving sectors in the world. More and more energy retailers are looking to move further toward digitisation and reap the benefits of modern technology in an increasingly connected world. But many are struggling with the transition, held back by legacy operating systems which slow them down, drain resources, and hamper innovation.
This is where Kaluza comes in. An ecosystem of platforms whose services range from energy billing to smart electric vehicle charging, Its real-time cloud platforms transform supplier operations, reducing the cost to serve and boosting customer engagement. Essentially, its platform is aimed at helping businesses streamline their operations, saving them time, effort, and money which can be better invested elsewhere.
Kaluza is riding the momentum of a growing desire for sustainable business and services. Its program relating to electric car charging, for example, will be able to capitalise on huge new demand in that sector - over 100,000 electric cars are already on the roads in the UK, and Bloomberg New Energy Finance has predicted that electric cars will account for over 50% of new global car sales by 2040. As the globe moves further towards sustainable use of energy in the coming years, Kaluza could be very well positioned to capitalise.
Freddie
Company Specialist at Welcome to the Jungle
Insights
33% employee growth in 12 months
Company
Funding (1 round)
Jun 2024
$100m
LATE VC
Total funding: $100m
Company 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
Company HQ
Kensington, London, UK
Articles
Leadership
Melissa Gander
(CEO)Initially joined Kaluza as COO before becoming CEO in 2024. Previously worked at OVO Energy in a number of roles, including Managing Director of Smart Metering and Group COO. Prior to that, they worked at INEXUS as a Process and Performance Analyst and a Customer Manager.
People progressing
Joined as Senior Technical Product Manager in 2017, promoted after 2 years to Head of Product, promoted again in 2024 to their current position as Director of Product.
Joined Kaluza in 2020 as a Software Engineer, and in less than 2 years was promoted to Software Engineering Manager and again promoted in 2023 to Senior Software Engineer.
Diversity, Equity & Inclusion at Kaluza
- We are developing an dedicated Early Talent programme with a focus on underrepresented groups, offering different training opportunities within the business
- Our applicant tracking system, Greenhouse, also anonymously tracks the diversity of each candidate pipeline, so we can proactively take action when a pipeline needs to be more diverse
- We invest in tools, like Textio, and focused diversity job boards to help us reduce bias in our job postings and recruitment activity
- Commitment in improving diversity across our Tech Teams and working with companies to improve the tech ecosystem as a whole, specifically have committed to 25% Women in Tech by 2025
- We've signed up to numerous charters, like the Tech Talent Charter, Race at Work Charter and Trans in the City, to show our continuing commitment to improving I&D within Kaluza and the wider community
- Within Kaluza we have belonging communities set up, to offer support and forums for everybody
- We run monthly Inclusive Hiring Skills & Bias training that are open to all Kaluza employees
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