Mechanical Engineer
BH-323516-1
Posted: 23/02/2026
- Competitive
- France Ile De France Paris
- Contract
-
Data Centre
Location: Paris, France
Project Type: Hyperscale / Colocation Data Centre
Discipline: Mechanical Engineering (Mission Critical)
OverviewWe are seeking an experienced Senior Mechanical Engineer with a strong background in mission-critical environments to support the design, delivery, and commissioning of a major data centre project in Paris. The successful candidate will play a key role in developing mechanical design solutions, ensuring system resilience, and maintaining stringent uptime requirements typical of hyperscale facilities.
Key ResponsibilitiesDesign & Engineering
With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.
Project Type: Hyperscale / Colocation Data Centre
Discipline: Mechanical Engineering (Mission Critical)
OverviewWe are seeking an experienced Senior Mechanical Engineer with a strong background in mission-critical environments to support the design, delivery, and commissioning of a major data centre project in Paris. The successful candidate will play a key role in developing mechanical design solutions, ensuring system resilience, and maintaining stringent uptime requirements typical of hyperscale facilities.
Key ResponsibilitiesDesign & Engineering
- Lead the mechanical design for data centre infrastructure, including HVAC, chilled water systems, CRAC/CRAH units, ventilation, heat rejection, fuel systems, and fire protection.
- Prepare and review schematic designs, detailed designs, equipment schedules, and technical specifications.
- Ensure designs comply with European, French, and client-specific engineering standards, including mission critical best practice.
- Perform load calculations, energy modelling, system sizing, and resilience analysis for mechanical systems.
- Oversee mechanical packages throughout all project stages: concept, detailed design, construction, commissioning, and handover.
- Work closely with electrical, structural, BMS, and architectural teams to deliver coordinated solutions.
- Provide technical leadership during factory acceptance tests (FAT), site acceptance tests (SAT), and integrated systems testing (IST).
- Manage interfaces with contractors, subcontractors, and equipment vendors, ensuring quality and compliance.
- Support development of commissioning scripts and test plans for mechanical systems.
- Review commissioning results, troubleshoot issues, and validate system performance against design intent.
- Ensure all mechanical systems meet Tier level and redundancy requirements (e.g., N+1, N+2).
- Act as a primary mechanical engineering contact for the client.
- Present design solutions, progress updates, and technical reports.
- Assist with value engineering, risk reviews, and change management.
- 7–12+ years’ experience in mechanical engineering, with at least 5 years in mission critical/data centre projects.
- Proven experience with:
- Chiller plants, cooling towers, heat exchangers, pumps
- DX cooling, liquid cooling, free cooling systems
- Fuel systems and fire suppression (FM200, IG55, Novec)
- Mechanical redundancy strategies for high-availability facilities
- Strong understanding of ASHRAE, EN standards, and Tier classification (Uptime Institute).
- Degree in Mechanical Engineering (or similar).
- Chartered status (CEng/Ingénieur Diplomé) preferred.
- Familiarity with software such as AutoCAD, Revit, CFD, and energy modelling tools.
- Strong communication and stakeholder management skills.
- Ability to lead technical discussions and mentor junior engineers.
- Problem‑solving mindset with a focus on reliability and energy efficiency.
- Previous experience working on data centre projects or Mission Critical projects in Europe or France.
- French and English language skills (essential)
- Experience with hyperscale clients or advanced cooling technologies (e.g., liquid cooling, immersion cooling).
With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.