Affiliated entity
Sixense, a subsidiary of VINCI Construction, is a leading player in the fields of monitoring, engineering and digitization for construction and infrastructure projects. Sixense relies on a network of international subsidiaries to provide its expertise in consulting, technology, services and data management. Sixense takes the pulse of infrastructures, helping to secure their construction and operation, and optimize their maintenance.
Sixense is present in 20 countries, employs nearly 750 people in its various divisions and achieved a turnover of 106 million euros in 2021.
Reference number
2026-128950
Your missions ?
As an Office Manager / HR Officer, you will act as the right hand of the General Manager and a true cornerstone of the organization.
You will ensure the smooth day-to-day running of the company while contributing to the structuring of administrative, HR, and financial processes.
This is a cross-functional and strategic role built on trust, discretion, and proactivity.
Your main responsibilities with us :
Executive support to the General Manager :
- Managing and optimizing the GM’s agenda
- Organizing travel and key events
- Preparing and following up on strategic meetings
- Drafting materials (emails, presentations, notes)
- Tracking priorities, deadlines, and decisions
You are at the heart of decision-making and facilitate leadership effectiveness.
Office management & internal operations :
- Coordinating office life (Bucharest & Cluj)
- Managing suppliers and office resources
- Organizing team travel and internal events
- Overseeing supplies and general services
You create a smooth, structured, and positive work environment.
HR administration :
- Managing onboarding and offboarding processes
- Maintaining employee records
- Supporting recruitment (CV screening, interview scheduling)
- Managing leave, absences, and payroll inputs
- Contributing to HR processes and internal communication
You play a direct role in employee experience.
Financial support :
- Tracking invoices and expense reports
- Liaising with accounting
- Monitoring payments and deadlines
You help ensure reliable and efficient administrative processes.
The profile we are looking for :
You are organized, reliable, and proactive, with a strong service mindset.
Your strengths :
- 3–5 years of experience in office management, executive support, or HR
- Strong organizational and prioritization skills
- High level of discretion and professionalism
- Excellent communication and writing skills
- Proficiency in MS Office
- Knowledge of HR administration and general business operation
Why this role is for you :
✔ You enjoy versatile and high-responsibility roles
✔ You want to be at the core of a growing technical organization
✔ You are looking for a position combining people, structure, and impact
✔ You want to evolve in an international environment