INTERNSHIP DETAILS

Administrative Assistant - Summer Intern

CompanyWilldan
LocationTemecula
Work ModeOn Site
PostedMay 11, 2026
Internship Information
Core Responsibilities
Provide administrative support to analysts by generating and updating spreadsheets with strict deadlines. Perform data entry and maintain databases using proprietary software and Microsoft Office products.
Internship Type
full time
Company Size
1162
Visa Sponsorship
No
Language
English
Working Hours
40 hours
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About The Company
Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States. Its broad set of complementary disciplines span energy efficiency, distributed energy resources and software, engineering and planning, public finance and economic consulting. Willdan provides integrated technical solutions to extend the reach and resources of its clients, and provides all services through its subsidiaries specialized in each segment. Since our establishment in 1964, Willdan has grown significantly, employing 1,560 dedicated professionals (excluding contractors) as of December 31, 2021, and achieving an impressive annual Contract Revenue exceeding $350 million. Willdan benefits from long standing, well-established relationships with local and state government agencies, investor-owned and municipal utilities, and commercial and industrial firms throughout the United States. Headquartered in Anaheim, California, Willdan operates from offices in more than 20 states across the US, with its largest operations in California and New York.
About the Role

Willdan Financial Services (WFS) is seeking an Administrative Assistant - Summer Intern for our office in Temecula, CA. 

Under close supervision, the Administrative Assistant will provide administrative support for analysts, much of which includes working on spreadsheets with strict deadlines. Duties will also include data entry and database management. This administrative assistant will be utilizing Microsoft products, including Excel, Word, and Outlook. This is a part-time, temporary position from May 2026 – September 26, 2026.

Essential Duties and Responsibilities

  • Generating and updating spreadsheets using Microsoft Excel.
  • Provide data entry support to maintain and update databases in the company's proprietary software.
  • Utilize Microsoft products efficiently, including Excel, Word and Outlook.

Job Requirements / Qualifications:

  • High school diploma, and some college experience or equivalent preferred.
  • Exceptional customer support skills.
  • Ability to apply mathematical concepts such as percentages, percent changes, and ratios.
  • Ability to multi-task, set priorities and manage time effectively in a fast-paced environment.
  • Ability to pay strict attention to details.

EEO Non-Discrimination and ADA Reasonable Accommodation Statement
Willdan is an equal opportunity employer. Applicants are considered for all positions without regard to race, religious creed, color, age marital status, sex, sexual orientation, gender identity, gender expression, citizenship status, national origin, ancestry, religion, military service or veteran status, disability, medical condition, childbirth and related medical conditions, genetic testing, reproductive status or any other classification protected by federal, state or local laws and ordinances. Willdan does not discriminate on the basis of physical or mental disability where the essential functions of the job can be reasonably accommodated. Determinations on requests for reasonable accommodation will be made on a case-by-case basis. If you need reasonable accommodation for any part of the application and hiring process, please notify us.

Willdan Engineering participates in E-Verify.

Key Skills
Microsoft ExcelMicrosoft WordMicrosoft OutlookData EntryDatabase ManagementCustomer SupportMathematical ConceptsTime ManagementAttention To DetailMulti-tasking
Categories
AdministrativeFinance & AccountingData & Analytics