Portfolio Administration Assistant

Kick-start your career in sustainability, work with iconic global brands, and make a real impact on the UK’s Net Zero journey!

If you're organised, proactive, and eager to grow your career in a meaningful sector – this is your opportunity to join a multi-award-winning international consultancy. Here, you’ll gain hands-on experience with high-profile clients, develop valuable skills in energy and sustainability, and play a direct role in helping businesses reduce their carbon footprint.

Salary: £24,600
Contract: 12-month fixed-term contract (with potential to become permanent)
Location: Leicester – hybrid - with office days on Tuesday & Thursday each week, shifting to Tuesday & Friday during the last week of each month
Standard Hours: 9am – 5pm, Monday to Friday (37.5 hours per week)
Full training provided – No Energy Experience Required
‘Very Good’ place to work (Best Companies)

We’re Consultus – a trusted name in energy and net zero consultancy, helping businesses across the UK and beyond to manage their energy portfolios and cut carbon.

As our Portfolio Administration Assistant, you’ll play a key role supporting our top-tier clients by keeping systems up to date, documents in order, and processes running smoothly.

You don’t need experience in the energy sector – but you do need proven administration experience, strong organisational skills, and the confidence to manage multiple tasks and deadlines in a fast-paced environment.

What you’ll do:

As part of our Tier 1 Client Management Team, you will:

• Manage client portfolio updates, including tenancy changes and new site setups

• Prepare tenders across electricity, gas, water, and metering services

• Maintain and check internal systems and data sheets for accuracy

• Track key dates and tender schedules, ensuring nothing is missed

• Support Quarterly Business Reviews, capturing notes and managing outputs

• Coordinate with internal departments to deliver timely client service

• Manage Letters of Authority and document trackers

• Learn the full energy consultancy lifecycle through comprehensive training

• Ensure all outputs meet our Performance Framework and Measures of Success, focusing on timeliness, accuracy, and clear communication

What we’re looking for:

• Proven administration experience (experience organising others is desirable)

• Strong organisational skills and attention to detail

• Ability to manage multiple tasks and deadlines in a fast-paced environment

• Excellent written and verbal communication

• Confidence engaging with suppliers and clients

• Proficiency with MS Excel formulae

• Proactive, solution-focused, and eager to learn

• Team player with a calm and adaptable attitude

• Degree in data/analytics, environment, or sustainability (desirable but not essential)

Why join Consultus?

• Join a trusted, international consultancy driving the transition to Net Zero

• Rated a ‘Very Good’ place to work by Best Companies

• Enjoy hybrid working, with two days per week in our Leicester HQ

• Develop valuable skills, gain hands-on experience with high-profile clients, and build a career in a sector that’s making a real difference to the environment

• Be part of a supportive team with a clear learning and development pathway

• Access enhanced parental leave, wellbeing support, and internal progression opportunities

Ready to build a career you can be proud of?
Apply now and become part of a company that’s changing the way businesses use energy.

Committed to Inclusion and Diversity
The Consultus International Group is committed to fostering an inclusive workplace where individuals from all backgrounds are valued. We encourage suitable applications from a diverse array of talent. For more information about our Disability Confident Commitment, please visit www.consultus.com/careers.

Unfortunately, because we are unable to offer VISA sponsorship for this position, all applicants must be eligible to work in the UK.

We may close applications early if we receive a high volume of interest.

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