Portfolio Assistant

Commercial Services

Location: Hybrid/Kings Hill, Kent
Salary: £25,948.96 per annum
Contract type: 12-month FTC
Hours: Full time, 37 hours per week

LASER Energy are looking for a proactive individual with a solutions-focused mindset to join their team as a Portfolio Assistant and play a key role in maintaining accurate customer portfolios and supporting the smooth delivery of our services.

Who we are

LASER Energy's mission is to deliver unique end-to-end solutions that help reduce energy costs and support the public sector on their journey to net zero.

As the leading provider of decarbonisation and energy services to the public sector, our goal is to always push the boundaries; we’ll explore new solutions and technologies to make sure the journey to net zero grows ever-greener and always more efficient – for us and our customers. All the while we strive to deliver on our goals, we also recognise how important it is to create an inviting, colourful place for our employees to work.

Why this role matters

The successful candidate will play a key role in ensuring customer portfolios are accurate, well‑maintained and processed on time, supporting smooth onboarding and ongoing service delivery. This is a role where accuracy, consistency and collaboration are essential, with responsibility for managing portfolio data, ensuring all activity meets agreed SLAs and commitment to delivering an exceptional customer experience at every interaction.

What you’ll be doing

  • Managing portfolio updates to ensure data is accurate, consistent and up to date.

  • Supporting onboarding of new customers, sites and supplies to ensure systems are correctly set up.

  • Maintaining visibility of portfolio activity, tracking progress and escalating risks early.

  • Working closely with Customer Services, Billing and other teams to support a high‑quality customer experience.

  • Responding to portfolio queries and taking ownership through to completion.

  • Building effective working relationships with suppliers to support issue resolution.

  • Identifying opportunities to improve processes and contribute to team efficiency.

  • Supporting documentation of processes, including how‑to guides and process maps.

What we’re looking for

  • Previous experience working within a fast-paced administrative or customer service-based role.

  • Strong attention to detail and a commitment to accuracy.

  • The ability to manage workload, prioritise tasks and maintain pace.

  • Excellent communication skills and a collaborative approach.

  • Confident use of Microsoft Office packages, particularly Microsoft Excel with the ability to manipulate and interpret data.

  • Resilience and the ability to maintain momentum under pressure.

What you’ll get in return

  • Salary of £25,948.96 per annum.

  • 25 days annual leave, rising to 27 after four years.

  • Birthday Day Off.

  • One concessionary day during the Christmas period.

  • Pension scheme with 4% employer contribution.

  • Life assurance cover.

Why CSG?

CSG is the UK’s largest local authority-owned trading company (LATCO), generating over £800 million in revenue per annum and supporting more than 16,000 education and public sector customers globally.

We are growing through a combination of organic development, acquisitions and strategic partnerships. Our businesses deliver services across education, IT, HR, legal, energy, procurement and more, all focused on delivering meaningful impact.

As a locally owned organisation, we take pride in reinvesting a significant proportion of our profits into frontline services, helping strengthen the communities we serve.

Inclusion & Accessibility

We are committed to fostering a diverse and inclusive workplace where everyone feels valued and respected. We encourage applications from suitably qualified people of all backgrounds.

As a member of Inclusive Employers and a Working Families Employer, we are actively building an environment that supports inclusion, flexibility and belonging for all colleagues.

We are committed to providing reasonable adjustments throughout our application and interview process; please let us know if you require any.

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