Administrative Assistant

Administrative Assistant

Date: May 29, 2026

Location: Sioux Falls, SD, US

Company: Missouri River Energy Services

Headquartered in Sioux Falls, SD Missouri River Energy Services is a joint action agency supporting our 61 member municipalities that own and operate their own electric distribution systems. We are dedicated to supplying our members with reliable, cost-effective, long-term energy and energy services in a fiscally responsible and environmentally effective manner. MRES offers an outstanding work environment. We provide competitive wages and comprehensive/low-cost benefit package with unique offerings.

Responsibilities

• Performs all administrative/clerical support duties including word and data processing activities, proofing, report assembly, and office machine operation.
• Plans and procures approved travel and meeting arrangements.
• Maintains documentation of the general and corporate business records.
• Files and performs documentation of the general and corporate business records within the filing and library systems.
• Distributes all incoming and internal correspondence.
• Prepares outgoing mail and correspondence for delivery to the appropriate carrier.
• Evaluates proposed office equipment, supplies, and administrative support software.
• Performing file searches.
• Update and maintenance of mailing lists and associated data bases.
• Performs administrative/clerical support duties in the absence of the other Administrative Assistants.
• Performs the duties of the Receptionist as required.
• Assists and provides training of position duties and responsibilities related to administrative positions.
• Performs, or is trained to perform, the duties and responsibilities of related administrative positions.
• Represents MRES on industry, development, and project committees, task forces, and conferences as assigned.
• Creates and maintains permanent documentation of projects, data, and software related to this position.
• Keeps abreast of relevant profession, industry, and inter-utility developments.

Required Knowledge, Skills, and Abilities

• High school diploma or general education degree (GED) and three years related experience and/or training.
• Mathematical Skills Ability to add and subtract two digit numbers and to multiply and divide with 10's and 100's. Ability to perform these operations using units of American money and weight measurement, volume, and distance.
• Reasoning Ability Ability to apply common sense understanding to carry out simple one or two-step instructions. Ability to deal with standardized situations with only occasional or no variables.
• Computer Skills To perform this job successfully, an individual should have knowledge of Word Processing software and Spreadsheet software.

MRES is an Equal Opportunity Employer