Billing Assistant

Lumina Energy; West Malling; Hybrid; GBP 25,000; Full time

Job summary

A leading energy management company seeks a detail-focused Billing Assistant to enhance billing accuracy and customer satisfaction. The role involves stakeholder collaboration and resolving supplier issues while contributing to efficient energy management processes. Enjoy a competitive salary and career development in a socially responsible organization.

Benefits

25 days annual leave plus bank holidays

An additional day off for your birthday

Access to retail and gym membership discount schemes

Life assurance coverage and health cash plan

Participation in company-wide events

Career development opportunities within the energy sector

Qualifications

• Strong analytical and problem-solving skills are essential.
• Effective communication and stakeholder engagement skills required.
• Proficient in Microsoft Office tools, especially Excel.

Responsibilities

• Deliver accurate billing by validating supplier billing files.
• Identify and resolve supplier billing errors promptly.
• Maintain understanding of customer billing positions and KPIs.

Skills

Analytical skills

Problem-solving skills

Communication skills

Stakeholder engagement

Attention to detail

Tools

Microsoft Office

Job description

Location: Hybrid / Kings Hill, Kent
Salary/package: £24,740.60
Contract type: Permanent
Hours: Full time 37 hours

We’re looking for a detail-focused and proactive Billing Assistant to join the LASER Energy team. In this essential customer-facing role, you’ll deliver accurate and timely billing for Fully Managed Customers while resolving supplier billing issues. If you have a problem-solving mindset, enjoy stakeholder collaboration, and are passionate about improving customer satisfaction in the energy sector, this could be your next career step.

Who we are
LASER Energy provides end-to-end energy management and decarbonisation solutions to the public sector, supporting customers on their journey to net zero. As a leader in this field, we combine industry expertise with innovative technologies to deliver cost-effective, environmentally responsible energy services.

Commercial Services Group (CSG) is the UK’s largest local authority-owned trading company (LATCO), employing over 1,800 people and operating in more than 86 countries. With 33 trading businesses and expertise across HR, IT, energy, education, legal, and procurement, CSG delivers impactful services to public and private sectors.

Why this role matters
As a Billing Assistant, you’ll be accountable for delivering an excellent billing experience for Fully Managed Customers by ensuring the accuracy and timeliness of billing. Your work will directly impact customer satisfaction, support effective energy management, and reduce billing-related risks.

What you’ll be doing

AsBilling Assistant:

• Deliver accurate billing by validating supplier billing files and resolving anomalies

• Identify, log, and resolve supplier billing errors in a timely and transparent way

• Maintain a detailed understanding of customer billing positions and KPIs

• Build and maintain supplier relationships to improve billing performance

• Communicate clearly and consistently with customers and internal teams

• Use scorecard feedback to understand customer needs and enhance service delivery

• Propose and implement process improvements that enhance customer experience

What we’re looking for

• Strong analytical and problem-solving skills

• Effective communication and stakeholder engagement skills

• Attention to detail with a proactive and customer-focused mindset

• Proficiency in Microsoft Office tools (Excel, Word, Outlook)

• Ability to manage and resolve queries efficiently

• Experience working with suppliers and internal teams

• Proven ability to meet and exceed performance KPIs

What you’ll get in return

• Competitive salary with progression based on performance and development

• 25 days annual leave plus bank holidays

• An additional day off for your birthday

• Access to retail and gym membership discount schemes

• Life assurance coverage and health cash plan

• Participation in company-wide events

• Career development opportunities within the energy sector

Why CSG?
With over £800 million in annual revenue and consistent 25% year-on-year growth, CSG is a leader in socially conscious commercial services. We have returned over £77 million in social value to the public sector. Joining us means contributing to real impact while developing your career in a dynamic, forward-thinking organisation.

Inclusion & Accessibility
We’re committed to creating a workplace where everyone is valued. We welcome applicants from all backgrounds and will support you with any adjustments needed during the recruitment process. Please let us know how we can help.