Backend Engineer — TypeScript, AWS, Event-Driven, Scalable

Kaluza Ltd.; Bristol; On-site; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Pension Scheme

Discretionary Bonus Scheme

Private Medical Insurance + Virtual GP

Life Assurance

Monthly flex fund

26 days holiday

Flexible Bank Holidays

Progressive Leave Policy

Personal Learning Budget

Home Office Budget

Job summary

Kaluza Ltd. is hiring a senior backend engineer to design, build and maintain scalable services using TypeScript. You will work with event-driven architectures, queues and cloud infrastructure (AWS) to power real-time features and services.

You'll own end-to-end services from architecture to production monitoring, focusing on performance, data design and reliability. The role emphasises collaboration, mentoring, and delivering customer-focused solutions at scale.

Qualifications

• Solid experience developing backend applications, ideally in TypeScript or quickly pick it up.
• Understanding of event-driven systems and queues.
• Extremely comfortable working with cloud infrastructure (AWS preferred), serverless technologies.
• Experience with database design, optimisation, and maintenance (SQL or NoSQL).
• Passionate about high-quality software and solving real customer problems.
• Strong communication and collaboration skills, including mentoring and knowledge sharing.
• Proactive mindset and ability to thrive in ambiguity.

Responsibilities

• Join Kaluza's Technology community to build and maintain the Energy Retail platform.
• Contribute to scalable backend services, end-to-end ownership from architecture to production monitoring.
• Collaborate with product managers, designers, and other engineers to deliver customer-focused solutions.

Skills

TypeScript

Backend development

Event-driven systems

Message queues

AWS

Serverless

SQL/NoSQL

Cloud infrastructure

Mentoring

Communication

Tools

Kafka

Terraform

GitActions

Kubernetes

Docker

GraphQL

Job description

Kaluza Ltd. is hiring a senior backend engineer to design, build and maintain scalable services using TypeScript. You will work with event-driven architectures, queues and cloud infrastructure (AWS) to power real-time features and services.

You'll own end-to-end services from architecture to production monitoring, focusing on performance, data design and reliability. The role emphasises collaboration, mentoring, and delivering customer-focused solutions at scale.