Executive Assistant

Executive Assistant – Executive Leadership Support

Job  | Boston, MA | 3-Month Contract | 100% Onsite

Sigma, Inc. is seeking an experienced Executive Assistant to provide high-level administrative and operational support to executive leadership at a leading healthcare organization in Boston, MA. This onsite contract opportunity is ideal for a highly organized professional with strong executive support experience, advanced Microsoft Office skills, and the ability to manage complex projects, communications, meetings, and sensitive information.

The Executive Assistant will act as a key liaison between the executive and internal/external stakeholders, independently managing priorities, preparing executive communications, coordinating high-level meetings, and supporting strategic initiatives.

• Position: Executive Assistant
• Job : 177419
• Location: Boston, MA
• Work Arrangement: 100% Onsite
• Duration: 3-Month Contract
• Schedule: Monday–Friday
• Hours: 40 hours/week
• Shift: 7:30 AM – 4:00 PM

• Provide complex administrative support to executive leadership and assist with managing daily priorities.
• Represent the executive when interacting with internal and external stakeholders, including senior leaders, community partners, government agencies, legal teams, and consultants.
• Handle sensitive and confidential matters using discretion, professionalism, and independent judgment.
• Respond to policy-related questions and determine appropriate next steps for issues requiring executive attention.
• Establish and maintain strong working relationships across all levels of the organization.
• Research, prepare, and edit complex memos, letters, reports, presentations, and executive communications.
• Collect, analyze, and organize information to support executive decision-making.
• Generate reports, validate data accuracy, and determine appropriate data inclusion and reporting requirements.
• Manage executive calendars, online appointment schedules, and complex meeting coordination.
• Coordinate multiple meetings, prepare agendas, organize materials, and maintain background documents for executive review.
• Arrange complex domestic and business travel plans, including schedules and presentation materials.
• Develop and maintain organized filing systems for easy access to executive documents and resources.

• Associate degree required;
  Bachelor’s degree preferred.
• 5–8 years of executive administrative or related administrative support experience.
• Experience supporting senior executives, directors, presidents, or healthcare leadership preferred.
• Advanced proficiency with Microsoft Office applications, including:
  • Microsoft Outlook
  • Word
  • Excel
  • Power Point
  • Access (preferred)
• Ability to create complex documents, presentations, reports, and data analyses.
• Strong organizational skills with the ability to manage multiple priorities in a fast-paced environment.
• Excellent written and verbal communication skills.
• Demonstrated ability to handle confidential information with professionalism and discretion.

The ideal candidate is a seasoned Executive Assistant or Senior Administrative Professional with experience supporting high-level executives, managing complex schedules, coordinating strategic meetings, and handling sensitive organizational matters. Candidates with healthcare, hospital, government, legal, or executive office experience are strongly encouraged to apply.