Site Supervisor

DT Mühendislik ve Taahhüt A.Ş.; Brussel Hoofdstad; On-site; EUR 50,000 - 70,000; Part time

Job summary

DT Mühendislik ve Taahhüt A.Ş. seeks a Site Supervisor to lead administrative and operational management of a landmark 19,000 m² development in Brussels. You will ensure regulatory compliance, manage Check-in at Work registrations, and coordinate with internal teams and external stakeholders.

The role offers freelance or temporary contracts, requires 3+ years in Belgian construction admin, and fluency in French and English to liaise with authorities and suppliers on a large-scale project.

Qualifications

• 3+ years of experience in Belgian construction administration.
• Knowledge of ONSS systems and procedures.
• Fluent in French and English.
• Experience in MEP or construction site environments.
• Basic accounting or invoicing knowledge.

Responsibilities

• Site administration: Manage site-level administration, ONSS registrations and local authority liaison.
• Regulatory liaison: contact municipal authorities and utility providers; site support and payroll logging.
• Manage ONSS 'Check-in at Work' registrations and compliance records.
• Maintain and organize all site documentation and reporting files.
• Track attendance, working hours and payroll-related logs.
• Liaise with municipal authorities, inspectors and utility providers.
• Support procurement processes and follow up on supplier invoices.
• Assist site management with administrative and operational tasks.

Skills

Construction admin

ONSS knowledge

Organization

FR/EN fluent

MEP experience

Invoicing basics

Job description

Lead a Landmark 19,000 m² Development in Brussels

Ready to take ownership of a project that will leave a lasting mark on Brussels? We are looking for an experienced Site Supervisor to support the administrative and operational management of a prestigious 19,000 m² mixed-use development, combining hotel, residential, office and commercial facilities. This is a unique opportunity to join a technically challenging project, work alongside multidisciplinary teams, and play a key role in keeping a landmark site running smoothly.

The Project

• Freelance or temporary employment (with a strong possibility of extension based on future project opportunities)

The Site Supervisor supports the day-to-day administrative and operational management of a large construction site in Brussels. The role ensures full compliance with Belgian administrative requirements, including ONSS "Check-in at Work" registrations, while keeping site documentation and reporting accurate and coordinating with internal teams and external stakeholders.

• Site administration: Manage site-level administration, "Check-in at Work" (ONSS) registrations and local authority liaison
• Regulatory liaison: Contact municipal authorities and utility providers - Site support: Manage local site procurement and payroll logging
• Manage ONSS "Check-in at Work" registrations and compliance records
• Maintain and organize all site documentation and reporting files
• Track attendance, working hours and payroll-related logs
• Liaise with municipal authorities, inspectors and utility providers
• Support procurement processes and follow up on supplier invoices
• Assist site management with administrative and operational tasks

What We’re Looking For

• 3+ years of experience in Belgian construction administration
• Good knowledge of ONSS systems and procedures
• Strong organizational and documentation skills - Professional fluency in French and English
• Experience in MEP or construction site environments
• Basic accounting or invoicing knowledge
• Be part of a landmark project in Brussels
• Take ownership and make visible impact
• Work in an international engineering environment
• Enjoy a technically challenging role with real responsibility
• Access future opportunities on major European projects
• Flexible setup: freelance or temporary contract
• Competitive remuneration package

If you're passionate about delivering high-quality electrical installations and leading site execution on complex construction projects, we'd love to hear from you.