Demo

Sr. Assistant

Trinity Careers
Dallas, TX Full Time
POSTED ON 10/28/2025 CLOSED ON 12/16/2025

What are the responsibilities and job description for the Sr. Assistant position at Trinity Careers?

Trinity Industries, Inc. is searching for a talented team player to fill the position of Sr. Assistant in our Dallas, Texas headquarters office. This team member will provide administrative support in the busy day-to-day operations of certain critical enterprise level accounting and finance functions.  

Join our team today and be a part of Delivering Goods for the Good of All!  


This role will be responsible for a set of core responsibilities that are essential to helping the departments meet their goals. In addition, you will support a variety of administrative processes that help keep our Corporate/Financial Strategy and Capital Markets/Portfolio Investment teams organized and effective. This individual must be comfortable as the “go to” person for questions related to key operational processes and internal support.


What you’ll do:

  • Provide administrative support to your teams, including managing multiple complex/detailed calendars with a high degree of accuracy and proactive initiative
  • Communicate to a variety of audiences and regularly interact with all levels of the organization, including members of the “C-suite”, in a polished and professional manner
  • Plan and coordinate key meetings and events with the departments and Trinity’s executive management team including catering
  • Coordinate domestic and international travel for team members
  • Coordinate Visas and other international travel documents for team members
  • Assist with compiling presentations as needed
  • Collaborate with the offices of the CEO, CFO and other Administrative Assistants as needed on coordination of meetings, data requests, etc.
  • Proactively recognize and resolve office and departmental needs in a courteous and professional manner
  • Manage multiple priorities and handle financial and confidential matters with integrity and diplomacy
  • Assist with processing transactions, such as payment of vendor invoices
  • Prepare and submit Expense Reports for several team members
  • Assist with creation/modification of presentations, spreadsheets, and other various documents
  • Handle sensitive correspondence diplomatically, efficiently, and effectively
  • Assist with identifying and implementing process improvements for relevant departmental activities

What you'll need:

  • Bachelor’s degree preferred
  • 8 years' experience as a senior administrative assistant at the Senior Leadership level
  • Exemplary attention to detail and strong organizational and project management skills
  • Advanced expertise with key business tools, such as Microsoft Outlook, Word, Excel, PowerPoint, SharePoint, Teams and Adobe Pro
  • Excellent communication skills/professional etiquette required (written and oral) for a business setting
  • Strong interpersonal skills required; ability to work well with cross-functional teams and individuals at all levels of the organization
  • Demonstrated ability to exercise discretion and good judgment, maintaining a high level of confidentiality
  • Familiarity with digital collaboration tools and video/virtual conferencing platforms
  • Ability to effectively manage multiple projects simultaneously with limited supervision

Salary.com Estimation for Sr. Assistant in Dallas, TX
$54,059 to $67,164
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