Executive Assistant & Office Operations Lead

L5 Mission Critical; Chicago (IL); On-site; USD 75,000 - 110,000; Full time

Job summary

L5 Mission Critical in Chicago seeks an Executive Assistant to partner with the CEO, manage time, priorities, communications, and travel, and own the day-to-day operation of the Chicago office. The role blends high-level executive support with hands-on office management across the business.

The ideal candidate anticipates needs, maintains confidentiality, and works cross-functionally with leadership, HR, finance, operations, business development, marketing, clients, partners, and the board.

Qualifications

• 7+ years of experience providing executive support at C-level, with office management experience.
• Bachelor’s degree preferred, or equivalent experience.
• Strong organizational skills with attention to detail and follow-through.
• Excellent written and verbal communication with executives and board members.
• Ability to handle confidential information with discretion.
• Proactive, resourceful, and independent in solving problems.
• Advanced proficiency with Microsoft 365; quick learner of new systems.
• Flexibility to support occasional after-hours work.

Responsibilities

• Manage the CEO's calendar, priorities, and communications.
• Coordinate meetings, prepare materials, and track actions.
• Oversee day-to-day Chicago office operations.
• Coordinate onboarding, interviews, and vendor relations.
• Maintain confidential files and administrative processes.
• Plan events and team activities when needed.

Skills

Executive support

Calendar management

Communication

Discretion

Proactive problem solving

Education

Bachelor’s degree preferred

Tools

Microsoft 365

Job description

L5 Mission Critical in Chicago seeks an Executive Assistant to partner with the CEO, manage time, priorities, communications, and travel, and own the day-to-day operation of the Chicago office. The role blends high-level executive support with hands-on office management across the business.

The ideal candidate anticipates needs, maintains confidentiality, and works cross-functionally with leadership, HR, finance, operations, business development, marketing, clients, partners, and the board.