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Administrative Services Assistant Jobs in Riverside, CA

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Administrative Services Assistant information

See Riverside, CA salary details

$11

$23

$45

How much do administrative services assistant jobs pay per hour?

As of Aug 8, 2026, the average hourly pay for administrative services assistant in Riverside, CA is $23.61, according to ZipRecruiter salary data. Most workers in this role earn between $16.06 and $26.35 per hour, depending on experience, location, and employer.

What is the difference between Administrative Services Assistant vs Administrative Coordinator?

AspectAdministrative Services AssistantAdministrative Coordinator
CredentialsHigh school diploma or equivalent; some roles may prefer post-secondary educationHigh school diploma; some roles may require post-secondary education or certifications
Work EnvironmentOffice settings, government agencies, educational institutionsOffice environments, corporate settings, government offices
Employer & Industry UsageCommonly used in public sector, healthcare, educationUsed across various industries including corporate, non-profit, government
Primary ResponsibilitiesHandling administrative tasks, scheduling, data entryOverseeing administrative processes, coordinating projects, supervising clerical staff

The main difference is that Administrative Services Assistants focus on routine administrative tasks, while Administrative Coordinators often handle more complex coordination and oversee administrative functions. The roles overlap in office environments and required skills, but Coordinators typically have additional responsibilities and may require more experience or certifications.

What exactly does an administrative services assistant do?

An administrative services assistant provides support by performing clerical tasks such as managing files, scheduling appointments, handling correspondence, and maintaining office operations. They often use office software like Microsoft Office and may coordinate with other staff to ensure efficient workflow.
What are the most commonly searched types of Administrative Services jobs in Riverside, CA? The most popular types of Administrative Services jobs in Riverside, CA are:
What cities near Riverside, CA are hiring for Administrative Services Assistant jobs? Cities near Riverside, CA with the most Administrative Services Assistant job openings:
Infographic showing various Administrative Services Assistant job openings in Riverside, CA as of August 2026, with employment types broken down into 1% As Needed, 77% Full Time, 17% Part Time, 1% Temporary, and 4% Contract. Highlights an 93% Physical, 3% Hybrid, and 4% Remote job distribution, with an average salary of $49,106 per year, or $23.6 per hour.

Administrative Services Manager

EKI Environment & Water Inc

Irvine, CA • On-site

$110K - $130K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Re-posted 13 days ago


Job description

COMPANY OVERVIEW

EKI Environment & Water, Inc. (EKI) is an employee-owned, full service, engineering and environmental sciences consulting firm serving private- and public-sector clients throughout the United States. If you are interested in improving the environment and advancing your career, then EKI is the place for you.

The Administrative Services Manager position reports to the Chief Operating Officer (COO) and leads EKI’s administrative function, overseeing the Administrative Coordinators, Librarian, Project Assistants, and Facilities Manager. This role is responsible for delivering consistent, high-quality administrative support across all office locations, driving operational efficiency, and partnering with leadership to advance company-wide initiatives.

This position requires strong leadership, sound judgment, and the ability to manage a distributed team while balancing multiple priorities in a fast-paced, dynamic environment.


PRINCIPAL DUTIES & RESPONSIBILITIES

Your responsibilities may include, but will not be limited to the following:


Team Leadership & Administrative Operations

  • Directly manage the Administrative Coordinators, Librarian, Project Assistants, and Facilities Manager, collectively referred to as Support Services. Provide mentorship, training, performance management, and standardization of best practices across all office locations
  • Establish and maintain consistent administrative policies, procedures, and workflows across the firm, and serve as the primary point of escalation for administrative matters
  • Conduct regular team meetings and one-on-ones with the Support Services team to ensure alignment, accountability, and clear communication
  • Partner with Human Resources on employee relations matters for the Support Services team, including coaching, corrective action, performance improvement plans, and other personnel actions
  • Facilitate Administrative Coordinators’ coordination with the Executive Team, ensuring seamless administrative support to leadership
  • Develop and monitor administrative budgets, including staffing, supplies, equipment, and vendor spending
  • Assist with development and implementation of corporate operational processes, including policy development, training, and compliance monitoring
  • Track key performance indicators (KPIs) for the administrative function and report progress to the COO
  • Support implementation of the corporate and technical training programs including scheduling, employee enrollment, uploading and tracking in the HRIS, etc.
  • Oversee company-wide records and information management programs, including retention policies, electronic and physical filing standards, and document control aligned with company and regulatory requirements
  • Leverage the use of technology to enhance Support Services functions


Facilities, Library & Office Operations

  • Oversee the Facilities Manager in facilities-related operations across all EKI locations, including office moves, space planning, vendor relationships, building services, and a safe, productive, and welcoming work environment
  • Manage vendor negotiations, contracts, and service agreements to ensure quality and cost efficiency, and oversee office supply, equipment, and procurement programs across all offices
  • Partner with the Health and Safety team to maintain office-level safety programs across all locations, including emergency action plans (EAPs), evacuation drills, first aid/AED readiness, building security and access control, and ergonomic assessments
  • Ensure consistent front-desk operations, visitor experience, and package and courier coordination across all office locations
  • Oversee the Librarian in maintaining EKI’s technical library, reference resources, and research support services for project teams
  • Oversee the Project Assistants in supporting project teams with deliverable QA/QC review and production
  • Expand roles and responsibilities of Project Assistants based on the needs of project teams and client requirements
  • Coordinate with IT on office equipment, conference room and audio-visual technology, new-hire workstation setup, and the rollout of firm-wide systems impacting administrative workflows


Cross-Functional Special Projects

  • Partner with the Operational Departments and Finance/Accounting for onboarding, training, and policy and process implementation
  • Lead planning and execution of onsite and offsite company events, meetings, and retreats, ranging from small leadership sessions to large-scale company gatherings, in coordination with the Executive Team
  • Manage certificates of insurance (COIs) for clients and vendors
  • Manage corporate professional registrations across the states in which EKI operates
  • Identify opportunities for process improvement, cost savings, and increased organizational efficiency
  • Other duties as required


QUALIFICATIONS & REQUIREMENTS

Knowledge, Skills & Abilities

  • Bachelor’s degree in Business Administration, Management, or a related field preferred
  • Minimum of eight to twelve (8–12+) years of experience in administrative operations, with at least three to five (3-5) years in a management or supervisory role
  • Must have experience leading distributed or multi-office administrative teams, with direct accountability for performance management and team development
  • Must have a strong background in office operations, facilities management, vendor management, records management, and event planning
  • Must be able to manage sensitive information with the highest level of confidentiality and professionalism
  • Must be effective in operating in a dynamic environment with shifting priorities
  • Must have a service-oriented mindset with strong leadership judgment
  • Must have advanced proficiency with Microsoft Office and comfort learning new systems; experience in a consulting, engineering, or professional services environment preferred
  • Familiarity with ADP is an advantage


Competencies

  • Must have strong communication skills both oral and written
  • Must have demonstrated leadership and people management skills, including coaching, mentoring, and performance management
  • Must have exceptional organizational and prioritization skills
  • Must be able to anticipate needs and solve problems independently
  • Must be highly proactive, resourceful, and detail-oriented
  • Must have a strong desire to grow personally as well as professionally
  • Must have sound business judgment and the ability to make decisions with limited supervision
  • Must have a current valid driver’s license


PHYSICAL DEMANDS & WORK ENVIRONMENT

  • Must be able to work in a fast-paced environment with high-volume workload and frequent short deadlines
  • Must be able to lift up to 25 lbs
  • Must be able to work 10-hour days on occasion
  • Must be able to work remaining in a stationary position, often standing or sitting for prolonged periods


TRAVEL REQUIREMENTS

  • Must be able to travel occasionally, possibly overnight, to other EKI office locations and for company events up to 10% of the time


COMPENSATION

  • The expected base salary range for this position is $110,000 - $130,000 per year. Actual compensation will be determined based on a variety of factors, including the candidate's skills, experience, qualifications, and geographic location. In addition to base salary, this position is eligible for an annual performance bonus based on individual and company performance.


As an employee-owned firm, EKI offers a unique company culture with a corporate commitment to maintaining a positive work/life experience. EKI provides excellent compensation and comprehensive benefits packages, including career advancement opportunities, outstanding training opportunities, incentive compensation including bonuses, retirement benefits through an Employee Stock Ownership Program (ESOP) and 401(k) profit-sharing contributions, and group medical, vision, and dental benefits.


EKI Environment & Water, Inc is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, pregnancy, genetic information, disability, status as a protected veteran, or any other protected category under applicable federal, state, and local laws.

NOTE: This job description is not intended to be all-inclusive and is not an exhaustive list of all required responsibilities, duties, and skills. This description may be amended at any time and employee may be assigned other related duties to meet the ongoing needs of the organization.

Notice to Third Party Agencies:

EKI Environment & Water, Inc does not accept unsolicited resumes from recruiters or employment agencies. In the event a recruiter or agency submits a resume or candidate without a previously signed agreement and approved engagement request with EKI Environment & Water, Inc. reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruiter or agency.