Software Engineer, Kaluza

• Professional experience developing backend applications
• Experience with TypeScript, or strong experience in another language and a desire to work with TypeScript
• Some experience or exposure to event-driven systems or message queues (e.g. Kafka, SQS)
• Familiarity with cloud environments, ideally AWS
• Comfortable working with databases (SQL or NoSQL) and an understanding of basic trade-offs
• A collaborative team player who communicates clearly and enjoys problem-solving with others
• Curious, motivated, and keen to grow as an engineer
• We are going through a period of significant evolution which is exciting and with it brings lots of opportunity and challenging work, which is not for everyone. To be successful in this role, you will be excellent at operating in ambiguous, changing environments, balancing multiple priorities simultaneously and get enjoyment from making the complex, simple
• 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

Desirable

• Reporting to: Software Engineering Manager
• You’ll be joining the Kaluza Technology community. We're a large team of engineers building data-led and product-focused software at scale. We care deeply about engineering quality and collaboration, and we support each other in continuously improving how we build and operate our systems
• In this role, you’ll work on Kaluza’s Energy Retail platform, a SaaS product that helps energy retailers operate more effectively and supports the decarbonisation efforts of Kaluza’s customers. The platform is built with scalability and reliability in mind, and you’ll contribute to systems that are used in production at meaningful scale
• You’ll focus primarily on building and improving backend services, working alongside experienced engineers who will support your development and growth. You’ll collaborate closely with product and engineering partners to deliver reliable, well-designed solutions
• Our tech stack evolves over time, but you can expect to work with technologies such as:
• TypeScript, Node.js, GraphQL, Kafka, AWS, Terraform, Docker, Kubernetes, and CI tooling
• Build, maintain, and improve backend services using TypeScript
• Contribute to event-driven systems that process data reliably and in near real time
• Work closely with product managers, designers, and other engineers to deliver user-focused features
• Write clean, well-tested code and take part in code reviews to uphold high engineering standards
• Take ownership of well-defined services or components, with support from more experienced engineers
• Work with SQL and NoSQL databases to store and retrieve data effectively
• Help deploy and operate services on cloud platforms, particularly AWS and serverless infrastructure
• Contribute positively to team culture through collaboration, knowledge sharing, and continuous learning

• Initial Call with Talent Acquisition (30 minutes)
• A short introductory call to tell you more about Kaluza, the team, and the role, and to check that this opportunity is a good mutual fit
• First Stage Interview (1 hour)
• A conversation with a hiring manager from one of our engineering teams. This interview covers both technical topics and mindset. It also includes a short 15 minute coding exercise, so please be prepared to share your screen and write some code
• Final Interview Loop (up to 3 hours total)
• The final stage consists of three interviews. These are usually scheduled across multiple sessions, though we can accommodate completing them in a single day if you prefer
• Behavioural Interview
• Focuses on collaboration, problem-solving, and how you deliver value for customers, using real examples from your experience
• System Design Interview
• Explores how you approach complex, large-scale problems, such as designing scalable, reliable, and secure systems
• Pairing Interview
• A collaborative session where you’ll work through a practical task with one of our engineers, focusing on problem-solving, clean code, and communication