# Billing & Metering Specialist (1 year contract)

> Optimal HR · Marousi, Greece · Contract · Posted 2026-09-10

**Workplace:** on_site

**Department:** Enerwave

## Description

**Optimal**, on behalf of its client **Enerwave**, member of HELLENiQ ENERGY and a leader in providing outstanding and innovative energy solutions, is seeking a **Billing & Metering Specialist (1 year contract)**.

The **Billing & Metering Specialist** will deal with a range of utility-related issues like meter readings management, issuance of energy invoices, and billing-related reporting and be involved in regular communication with customer 1st level support, partner agencies, and network operators. The contract for this role will be for a period of 1 year.

**Responsibilities:**

-   Execute regular and ad hoc customer billing printing and delivery (both for EL & NG), perform sample checks (billing controls) on the correctness of the issued invoices to ensure that all customers are billed and the invoices are issued correctly and maintain a record of checked and confirmed printed bills.
-   Participate with an active role in the Billing Cycles Management process (both EL & NG) by updating the billing system with all necessary commissioning specifications
-   Handle meter readings and metering corrections processes both for electricity (EL) and natural gas (NG) and perform validations (e.g. before uploading them into the company's systems, evaluations of automatic payments).
-   Resolve escalated customer issues related to measurements and charges-related disputes.
-   Perform and control the process of reimbursement of municipal fees in the respective municipalities of 3rd party charges that are collected through electricity bills and ERT fees; compile reports for the parties involved (e.g. Accounting, Tax & Treasury).
-   Provide regular and ad hoc reporting for customers to support the sales function. Provides customized reports to large customers.
-   Perform the process of printing and dispatching the issued documents to customers and update the billing system with all the necessary commissioning specifications as described in the contract.
-   Perform UAT checks in new system development and communicate to IT and if needed directly to the vendors any issues that must be addressed

**Requirements**

-   A BSc in Economics, Mathematics, Statistics, or a relevant discipline (applied science)              
-   A minimum of 2 years of Relevant Professional Experience
-   Fluent in English both verbally and in writing
-   Advanced Software Skills, MS Office,
-   Excellent analytical & numerical skills             
-   Strong teamwork
-   Excellent communication skills    

 **About Optimal**

Since 2005, Optimal has provided unparalleled, bespoke HR services to large organizations and SMEs operating in the EMEA region. We pride ourselves on delivering a 360° business support platform to our clients through 6 service divisions:

-   Talent Acquisition 
-   HR Strategy & Talent Development
-   Learning & Development
-   Workforce Management
-   Recruiting
-   Outplacement

## Apply

[Apply at Optimal HR](https://apply.workable.com/optimal-hr/j/0EAF02CB8D/apply)

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