Project Site Administrator

Position: Project Site Administrator

Location: Mons, Belgium

Employment Type: Full-time, On-site

Languages: English & French (Dutch is an advantage)

Reports to: Senior Project Manager/Project Director

TSL – About us

TSL is a leading technical engineering and construction partner operating across EMEA, the Americas and APAC.

We are committed to creating the spaces to power the fourth industrial revolution, whilst ensuring we leave a positive environmental and social legacy for communities across the world. Specialising in Data Centres, Advanced Manufacturing, Logistics, Food and Pharmaceuticals, we are proud to deliver outstanding turnkey projects at speed, without compromise on safety or quality.

Our team at TSL is focused on working with our clients and the entire supply chain to create a simple agenda concentrated on getting things done. At the heart of what TSL does is taking the ‘noise’ out of project delivery whilst ensuring that we are always engineering best value for money and fit-for-purpose solutions.

Role Description

We are looking for an experienced Project Site Administrator to join our team on a large-scale, high-security data centre construction project in Mons, Belgium. This role is pivotal to ensuring that site operations run smoothly, compliantly, and efficiently supporting both the general contractor’s team and coordinating with subcontractors on-site.

Key Responsibilities

• Monitor and ensure full compliance with Belgian labour laws and social regulations, including Limosa declarations, A1 certificates, CheckIn@Work, and subcontractor registration requirements
• Verify and maintain accurate records of personnel documentation, including right-to-work, site access permits, safety training certificates (e.g., VCA), and ID verification
• Coordinate secure site access procedures in line with high-security data centre protocols, including background checks, visitor tracking, and daily access logs
• Support and enforce strict site compliance protocols across both direct employees and subcontractors, ensuring all companies and individuals meet local, legal, and client-specific requirements before mobilisation
• Act as a liaison between site security, HSE, and administrative teams to ensure access and workforce management is efficient and fully compliant
• Prepare documentation for audits and inspections by Belgian authorities or the client, ensuring readiness and alignment with GDPR and other data protection standards
• Provide day-to-day administrative support to site management, engineers, subcontractors, and suppliers
• Coordinate supplier onboarding, manage purchase orders, monitor delivery schedules, and ensure that invoices are properly approved and paid in collaboration with procurement and finance teams
• Liaise with procurement and logistics departments to support timely delivery of materials and services to site
• Support and coordinate meetings, take minutes, manage filing systems, and maintain up-to-date records for audits
• Serve as the site point of contact for internal departments and external vendors on administrative, compliance, and logistical matters

Requirements

• 5+ years of site-based administrative experience, ideally on data centre, pharma, or other critical infrastructure projects
• Strong understanding and solid experience supporting of social compliance, site access procedures, and documentation within a high-security large scale construction environment
• Strong working knowledge of procurement and supplier coordination processes
• Familiar with invoice and PO tracking, logistics coordination, and delivery schedules
• Proficient in Microsoft Office (Word, Excel, Outlook) and document control tools
• Fluent in English and French; Dutch is a strong advantage
• Strong communication and organisational skills
• Able to commute reliably to Mons, Belgium, and be present on-site full-time
• Professional, discreet, and confident in working within a high-security and regulated environment

If this position is of interest, please submit your most up to date CV.

Our recruitment team will review your CV and, if you meet our criteria, we will reach out to you for an informal discussion.

Important

As part of our recruitment process, reference checks will be conducted at the job offer stage. By applying for this position, you consent to these checks as a condition of employment.