TSSD Services, Inc. (TSSD), founded in 1999, is a leading provider of professional and technical staffing solutions. The company supports clients across the energy and utility sectors, with a strong specialization in the nuclear industry. TSSD has built recognized expertise in decommissioning and environmental remediation, delivering end‑to‑end management of decontamination, demolition, and site‑remediation projects. The company manages the segregation, packaging, and disposal of low‑level radioactive, hazardous, and conventional demolition wastes—ensuring safe, compliant, and efficient project execution. Backed by an experienced team, TSSD has a proven track record of delivering safe, efficient, and cost‑effective project outcomes across complex and highly regulated environments.

In 2024, TSSD was acquired by the NUVIA Group, a subsidiary of VINCI Construction and part of the world‑leading VINCI network. NUVIA is an international company operating worldwide on highly regulated and sensitive industrial sites, primarily supporting the nuclear industry. This acquisition strengthens NUVIA’s U.S. footprint and enhances its capabilities in decommissioning, remediation, and nuclear lifecycle services. 

Key Responsibilities

General Administrative Support
• Provide comprehensive administrative assistance to the CEO, HR Director, Operations Manager, and Payroll Administrator.
• Manage calendars, schedule meetings, coordinate travel, and support document preparation and correspondence.
• Maintain organized company records, shared folders, and internal documentation systems.

Payroll & HR Administration
• Assist the Payroll Administrator with timesheet collection, review, and entry, and help ensure accurate payroll processing.
• Support hiring activities, including posting job descriptions, coordinating interviews, candidate communication, and maintaining recruiting databases. 
• Support onboarding processes, including documentation, orientation scheduling, and system setup.

Quality, QHSE & Compliance Support
• Assist in preparing HR, QHSE, and operational reports for internal and external stakeholders.
• Support the development, administration, and continuous improvement of the Quality Management System. 
• Assist with internal and external audits, including documentation preparation, follow‑up actions, and audit response coordination.

Operational & Project Support
• Provide administrative assistance to the Operations Manager, including document tracking, meeting coordination, project recordkeeping, and preparation of client‑required submissions.
• Support project staffing administration and logistics, including coordinating

Communication & Marketing Support
• Provide support with internal and external communications, including formatting newsletters, announcements, and updates.
• Assist with social media and recruitment marketing activities (LinkedIn, website updates, etc.).  

ABOUT THE ROLE 

The Administrative Specialist plays a central role in supporting the daily operations of a small but expanding company. This position provides direct administrative support to the CEO, HR Director, Operations Manager, and Payroll Administrator, and ensures the smooth and efficient delivery of administrative, HR, QHSE, and operational processes. The ideal candidate is highly organized, proactive, and comfortable supporting a wide range of activities in a dynamic, multi‑functional environment.

QUELIFICATIONS AND EXPERIENCE 

• 3–5+ years of experience in administrative, HR, or operations support roles (experience in small‑business environments preferred).

• Strong organizational and multitasking skills, with the ability to manage competing priorities.

• Highly detail-oriented and proactive.

• High level of professionalism, confidentiality, and discretion.  

• Proficiency in Microsoft Office Suite; experience with databases and digital recordkeeping systems.

• Strong written and verbal communication skills.

• Experience supporting payroll or HR processes is an asset.

• Basic understanding of QHSE, quality management systems, or audit processes is preferred.

• Ability to work independently, take initiative, and support multiple leaders across the organization.