Senior Engineer I - Bristol - Kaluza

Description

Join to apply for the IAM Engineer (Senior Engineer I) role at Kaluza

Job title: IAM Engineer

Location: London / Bristol / Edinburgh – Hybrid

Salary: £63,000 – £81,000

Team: Identity & Access management team

Reporting To: Software Engineering Manager

This role is based in the UK and requires existing right to work in the UK. At this time, we are not able to offer visa sponsorship for this role. We are committed to building a diverse, global team and our sponsorship policy is evaluated on a role‑by‑role basis. We encourage you to keep an eye on our careers site to stay informed about future opportunities where we are able to offer visa sponsorship.

Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination. We help energy companies overcome today's challenges while accelerating the shift to a clean, electrified future. Our platform orchestrates millions of real‑time decisions across homes, devices, markets and grids. By combining predictive algorithms with human‑centred design, Kaluza makes clean energy dependable, affordable and adaptive to everyday life.

With teams across Europe, North America, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan, we power leading companies including OVO, AGL and ENGIE, as well as innovators like Volvo and Volkswagen.

At Kaluza we embrace a flexible, hybrid work model that balances autonomy with the power of in‑person connection. Many of our teams find value in coming together regularly to collaborate, strengthen relationships, and accelerate progress. We're focused on shaping thoughtful, team‑driven approaches that support both business impact and individual well‑being.

Where in Kaluza will I be working?

You'll be joining as an engineer in our Identity & Access Management (IAM) team, which provides authentication & authorisation services that safely ensures the appropriate accesses are permitted on the Kaluza retail platform, whether that's human (e.g. retail client customers or employees) or machine (e.g. external or other internal services). With millions of customers across multiple geographic regions, we naturally invest significant effort into availability, performance, security and observability, and the team prides itself on its ability to maintain a balance between rapid development of new services, iterative quality & feature enhancements alongside being highly responsive in incidents.

As an engineer in the IAM team you'll also be part of the wider Cyber Security squad, working alongside security engineers and security operations specialists as well as a range of software engineers from across our Kaluza engineering community.

What will I be doing?

We very much believe in sharing both responsibilities and the successes in our team, so you'll be exposed to many aspects of our IAM portfolio of work from the get go. The team builds, tests, deploys and supports a range of authentication & authorisation products for use across the Kaluza platform, with a diverse set of underlying technologies. We don't expect you to arrive with experience of all of them, but you can expect to learn about and get hands‑on with many, in particular TypeScript development, GitHub Actions, Terraform, PostgreSQL, AWS, Keycloak and DataDog. As a team, we currently follow a Kanban approach to Agile software development, making use of tools like Miro, Confluence and Jira for workshops, documentation and task management.

You'll be involved in the full software development lifecycle from rapid prototyping, technical options evaluation and publishing solution design specs, through to developing, configuring and deploying services, through to monitoring and improving our operational health. You will join our support rota to triage platform issues and respond to incidents; as a critical part of our platform we often get called upon to advise or champion core IAM principles, giving us a uniquely broad perspective across the entire architecture.

Alongside your day‑to‑day IAM work you'll also have the opportunity to mentor other engineers, get involved in cross‑engineering knowledge sharing as well as the potential to lead collaborative development across into other teams.

Is this the job for me?

Ideally you'll already have experience working as an IAM engineer, but we are very happy to consider candidates from software engineering or security engineering who are looking to jump into the Identity & Access Management domain. Whatever your background, we're looking for genuine enthusiasm to help us develop this space and for you to share that passion with others at Kaluza.

If you feel you can demonstrate knowledge & experience of some of the following then we'd love to hear from you

• Developing and maintaining quality SaaS APIs in AWS
• Working with (and continuous improvement of use with) fundamental DevSecOps engineering elements such as CI / CD pipelines, Infrastructure As Code, Kubernetes containerisation and platform health alerting & monitoring
• Application of basic modern identity & access management techniques and standards, such as OAuth 2.0 or SAML 2.0
• Integrating an IdP into services to enable SSO and/or federated identity
• Use of encrypted JWTs as part of an OIDC‑compliant user authentication flow and/or creating policies in an RBAC and ABAC environment
• Understanding of key Cyber Security and/or wider Information Security standards & policy, such as ISO‑27001

Kaluza Values

Here at Kaluza we have five core values that guide us as a business:

• We're on a mission
• We build together
• We're inclusive
• We get it done
• We communicate with purpose

Our values are not words on a wall — they are at the heart of our culture. They are how we make decisions and how we treat each other. They are concrete and clear, and reflect what we as people, and as a business, really care about.

Kaluza's vision is to power a world where net‑zero is within everyone's reach. Would you be interested in joining us to help achieve this?

From us you'll get

• Pension Scheme
• Discretionary Bonus Scheme
• Private Medical Insurance + Virtual GP
• Life Assurance
• Access to Furthr – a Climate Action app
• Free Mortgage Advice and Eye Tests
• Perks at Work – access to thousands of retail discounts
• 5 % Flex Fund to spend on the benefits you want most
• 26 days holiday
• Flexible bank holidays, giving you an additional 8 days which you can choose to take whenever you like
• Progressive leave policies with no qualifying service periods, including 26 weeks full pay if you have a new addition to your family
• Dedicated personal learning and home office budgets
• And more…

We're keen to meet people from all walks of life — our view is that the more inclusive we are, the better our work will be. We want to build teams which represent a variety of experiences, perspectives and skills, and we recognise talent on the basis of merit and potential.

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.

Find out more about working in Kaluza on our careers page and LinkedIn.

You can also find our Applicant Data Protection Policy here.

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Engineering and Information Technology

Industries

Technology, Information and Internet