Administrative Coordinator

Electro Specialty Systems; San Diego (CA); On-site; USD 42,000 - 64,000; Full time

Job summary

Electro Specialty Systems (ESS) is seeking an Administrative Coordinator to join our on-site team in the San Diego metropolitan area. In this full-time role, you will manage calendars, schedule meetings, greet visitors, answer calls, and handle routine inquiries while supporting internal teams with data entry and document organization.

You will also assist with basic finance tasks such as processing invoices, tracking expenses, and helping prepare budget documentation, ensuring smooth office

Qualifications

• Strong communication and customer service skills.
• Proficient administrative assistance and organization.
• Basic finance capabilities: invoice processing and expense tracking.
• Proficiency with office productivity tools and digital records.
• Ability to prioritize tasks, meet deadlines in a fast-paced environment.
• Previous experience in an administrative/support role preferred.
• High school diploma required; coursework in business admin is a plus.

Responsibilities

• Schedule meetings and manage calendars.
• Organize documents and maintain accurate records.
• Answer calls, greet visitors, and respond to routine inquiries.
• Support internal teams with data entry and report preparation.
• Coordinate office supplies and vendor services.
• Process invoices and track expenses; assist with budget documentation.

Skills

Communication

Administrative support

Finance basics

Microsoft Office

Attention to detail

Education

High school diploma

Tools

Microsoft Office

Job description

Company Description

Electro Specialty Systems (ESS) is an electronic security integrator based in the San Diego, California area, providing enterprise-class security solutions for mission-critical operations. Founded in 1987, ESS has built a long-standing reputation for delivering reliable, high-performance systems to a variety of clients with complex security needs. The company focuses on integrating advanced electronic security technologies that help organizations protect people, assets, and information. Team members at ESS collaborate closely with clients and internal technical experts to support secure, efficient operations. ESS offers opportunities to contribute to impactful projects in a stable, specialized industry.

Role Description

The Administrative Coordinator is a full-time, on-site role based in the San Diego Metropolitan Area. This role is responsible for providing day-to-day administrative support, including scheduling meetings, managing calendars, organizing documents, and maintaining accurate records. The Administrative Coordinator will handle front-office tasks such as answering calls, greeting visitors, and responding to routine inquiries, while supporting internal teams with data entry, report preparation, and coordination of office supplies and vendor services. The role also includes assisting with basic finance-related tasks, such as processing invoices, tracking expenses, and supporting budget documentation. The Administrative Coordinator collaborates with team members across the organization to ensure smooth office operations and consistent, professional communication with clients and partners.

Qualifications

• Strong Communication and Customer Service skills to interact professionally with clients, visitors, and team members.
• Proficient Administrative Assistance and Organization Skills to manage schedules, documentation, and day-to-day office activities.
• Basic Finance capabilities to support invoice processing, expense tracking, and financial record-keeping.
• Proficiency with office productivity tools (e.g., Microsoft Office or similar suites) and comfort working with digital records and databases.
• Ability to prioritize tasks, meet deadlines, and maintain attention to detail in a fast-paced environment.
• Previous experience in an administrative, office coordination, or similar support role preferred.
• High school diploma or equivalent required; additional coursework or degree in business administration or related field is an advantage.