Ariel Contreras

Senior Executive Assistant with 20+ years of experience supporting executive leaders. Proven partner in executive operations, complex calendar management, office operations, and stakeholder relations. Known for streamlining processes to enhance leadership effectiveness and organizational performance. Adept at cross-functional collaboration. Recognized for professionalism, discretion, and dependability, with a service-oriented, efficiency-driven approach.

Executive Administrative Assistant - Knight Commercial - Addison, Texas

(2026-03)

Delivers strategic executive support to the CEO, CFO, and VP in a fast-paced, high-growth organization through proactive calendar and inbox management, executive communications, and high-level administrative support.

• Manage a complex calendar for the CEO, proactively resolving scheduling conflicts and adjusting priorities to maximize efficiency and impact
• Inbox management for CEO and VP, including organizing, prioritizing, drafting responses, and tracking action items
• Provide day-to-day administrative support to three on-site executives
• Prepare, edit, and format presentations and documents using Microsoft PowerPoint, Excel, etc.
• Coordinate logistics including travel and accommodations for offsite meetings and team building events
• Organize internal and external meetings, including conference room scheduling, catering, and A/V coordination
• Manage weekly business plan review meeting presentation with executive leadership team
• Manage executive communication amongst internal leadership team, external partners, and PE investors

Sr. Executive Assistant & Business Support - Ellie Diagnostics - Richardson, Texas

(2023-09 - 2026-01)

Provides high-level executive and business support to the CEO, CFO, and senior leadership team within a fast-paced, high-growth environment while maintaining office manager duties.

• Serve as the trusted partner and liaison between the CEO, CFO, senior leadership, PE investors, and external shareholders
• Partner with CFO on financial reporting, audit preparation, and month-end close to ensure tight deadlines were met
• Manage highly confidential executive communications and sensitive business with discretion
• Produce daily customer volume reports for executive and board communication
• End-to-end coordination of quarterly Board of Directors meetings ensuring meticulous preparation, logistics, materials, catering, and follow-up
• Decreased delinquencies by 60% within three months by implementing AR process improvements that accelerated collections, strengthening cash flow performance
• Manage and resolve billing tickets bi-weekly within HubSpot
• Support cross-functional initiatives, including marketing campaigns contributing to 20% growth in organic website traffic and coordination of 10+ annual industry conferences
• Drive due diligence information management during the successful sale of Ellie Diagnostics, coordinating data collection and investor requests

Office Manager & Executive Assistant - Ellie Diagnostics - Richardson, Texas

(2022-05 - 2023-09)

Detail-oriented and proactive Office Manager with experience supporting executive leadership, finance, and HR operations.

• Serve as the first point of contact for office visitors
• Oversee daily office operations to ensure a clean, efficient, and well-organized work environment
• Manage office supply inventory, vendor relationships, and facility maintenance to support business continuity
• Support proposal coordination, contract administration, and high-level client communication as needed
• Reduced document retrieval time by 40% by redesigning filing systems and eliminating duplicate records
• Maintain confidential company, financial, and personnel information with absolute discretion
• Coordinate with tax and accounting partners alongside the CFO
• Oversee full-cycle Accounts Payable and Accounts Receivable (AP/AR) operations, issuing 300+ invoices monthly, payment issuance, account reconciliation, and internal controls compliance
• Coordinate and manage travel for CEO
• Established and optimized corporate travel management programs
• Produce monthly internal company-wide communication to support company culture, transparency and operational cadence
• Collaborate with leadership to create PowerPoint presentations for company-wide meetings
• Support HR operations across the employee lifecycle, including recruiting, onboarding/offboarding, benefits coordination
• Planned team-building initiatives, holiday celebrations, and Appreciation Week events within budget to deliver successful company-wide programs both locally and remotely

Office Manager & Lead Photographer - Judy Nordseth Photography - Dallas, Texas

(2005-08 - 2022-05)

Oversees daily operations of the studio, ensuring smooth business management and efficient workflow. Manages school accounts, scheduling, client communication, equipment, back-end office and customer facing needs. Lead photographer and graphic artist.

• Manage top revenue school accounts
• Organize and maintain back office, inventory, customer orders, and account files
• Process 1,000+ orders and handle packaging of 200+ prints annually
• Hire and train 20+ full and part time staff members, contract employees, and interns
• Handle account billing and account receivables
• Edit photos, create and design custom artwork
• Photograph and assist with high-volume photography events
• Lead process improvements, including implementation of a digital filing system to enhance document organization and retrieval efficiency

Bachelor of Fine Arts - Photography - University of North Texas