Proposals Writer

Job title: Proposal Executive

Location: London/Bristol - Hybrid

Salary: £58,000 - £70,000

Team: Commercial Operations

Reporting to: Proposal Manager 

Closing date for applications: Monday 9th February 2026

This role is based in London or Bristol  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.

What will I be doing?

As Proposal Executive in a growing team, you’ll have an exciting opportunity to help shape and embed processes. Supporting the Proposal Manager, your efforts will drive efficiency, improve quality, and deliver to the business a high performing proposals function where your contributions will be recognised.

Your key responsibilities will broadly include:

• Leading the end-to-end proposal response process for each assigned opportunity, including writing, editing, and coordinating responses to RFPs, RFIs, and other relevant sales support documents.
• Collaborating with cross-functional teams – including sales, pre-sales, product, and other business functions – to gather technical and commercial information and craft responses.
• Being a driving force in managing and maintaining the Loopio content library, working with SMEs to ensure content remains accurate and reliable, and taking ownership and content specialism of assigned sections.
• Leveraging new and evolving content to proactively create, refine, and update standard materials and other Commercial team documentation as may be required, driving team efficiency.
• Developing deep product knowledge over time, to translate complex information into clear, persuasive, and client-focused content.
• Ensuring compliance with proposal guidelines by reviewing submission requirements, tracking deadlines, and delivering polished, on-brand proposals consistently.

About You

Ideally you’ll be…

• Extremely organised personally, and strong at keeping others focused and organised around a project, often in the face of competing priorities.
• An experienced and confident “starter-finisher” who’ll thrive in a busy but supportive team, and take ownership to directly contribute to winning new business through top quality work.
• Resourceful, proactive, and enthusiastic about getting yourself up to speed on technical and company-specific content.

What will set you apart

• Proven experience in proposal management (preferably within the energy, SaaS, or technology sectors) with a solid understanding of RFP/RFI processes.
• Excellent project management and communication skills, and the confidence to collaborate effectively with subject-matter experts.
• Strong attention to detail, and the ability to maintain quality in a fast-paced environment.
• A flexible approach in the face of shifting priorities.
• A focus on continuous process improvement – and the ideas and energy to make it happen. 
• Experience of SaaS sales is a plus.
• Proficiency – or the motivation to rapidly become proficient – with proposal management tools (we use Loopio) and Google Workspace for document creation and organisation.
• Fluency in Japanese would be of interest (but is not a key requirement).

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.

Read more about our values over on our careers site.

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 want the best people

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.