Question
Full-time
5-10

Snr. Mechanical Design Engineer (HVAC)

12/14/2025

The Senior Mechanical Design Engineer will perform HVAC load calculations, lead design meetings, and supervise design deliverables. They will also coordinate HVAC systems with other disciplines and provide technical support to site teams.

Working Hours

40 hours/week

Company Size

10,001+ employees

Language

English

Visa Sponsorship

No

About The Company
A multidisciplinary group with over 110 years’ experience. Since first going into action in 1909, the BESIX Group has over the years grown into a multidisciplinary company with a leading position in its markets: construction, property development and concessions. This wide-range expertise enables us to handle every aspect of a project, from financing over designing and building to operating and maintaining. BESIX Contracting specializes in construction, infrastructure and marine works, often in contracts with a high level of complexity. In Benelux and France, the Group’s regional affiliates BESIX Infra, Vanhout, Wust, Cobelba, Jacques Delens and Lux TP ensure a strong presence and a local approach. With Franki Foundations, Socogetra, Sanotec and Van den Berg, the Group offers specialist niche solutions for the building market like deep foundations, geo-engineering, road construction, water treatment and cable and pipeline construction. Backed by its experience in its home markets, BESIX has built up strong positions outside Europe. A typical example is the Middle East, where over a 55 year period BESIX has built up an impressive portfolio. In 2018, BESIX strengthened its position in Australia by acquiring, through a public takeover bid, all the shares of construction company Watpac Ltd. In 2018 the Group achieved sales revenues of over EUR 2.5 billion. The Group employs more than 15,000 persons in 26 countries across 5 continents.
About the Role

Company Description

Six Construct, a subsidiary of the BESIX Group, is the largest Belgian construction company operating in the Middle East. The company combines the efforts of a highly skilled workforce, along with strategic planning and innovative use of technology to overcome the most complex business challenges. Six Construct is a multi-services company that operates in the construction of commercial and residential buildings, sport and leisure facilities, infrastructure and marine-related projects. The company currently employs a workforce of approximately 4,000 in the Middle East, and a total of 10,000 worldwide.

Job Description

What You’ll Drive

Design & Engineering

  • Perform HVAC load calculations, system sizing, and technical documentation.
  • Review consultant design drawings and perform peer reviews with compliance reporting.
  • Lead design and technical meetings with consultants, clients, and authorities.
  • Supervise design deliverables during execution, ensuring accurate shop drawings.
  • Integrate BMS requirements into HVAC design (control strategies, points schedule, schematics).
  • Incorporate sustainability requirements (LEED, Estidama, energy efficiency standards) into HVAC design and equipment selection.
  • Execute value engineering studies to optimize cost, performance, and energy efficiency.

Coordination

  • Coordinate HVAC systems with other MEP and civil disciplines.
  • Lead BIM coordination sessions, resolve clashes, and ensure proper system integration.
  • Liaise with consultants, clients, for approvals and technical meeting and workshops.
  • Provide regular technical updates and reports to the Technical Director.
  • Technical Office & Subcontractor Support
  • Provide technical support to site teams with design clarifications and technical reports.
  • Review and track subcontractor engineering submissions, ensuring compliance with project specifications and internation standards.
  • Develop and maintain tracking systems for HVAC drawings, material submittals, method statement and approvals.
  • Prepare presentations to illustrate HVAC system scope and execution sequence.
  • Define detailed scope of works for subcontract packages during procurement stage.
  • Ensure subcontractor deliverables meet contractual, technical, and schedule requirements.

Procurement & Vendor Support

  • Collaborate with suppliers/vendors to obtain HVAC and BMS-related material submittals.
  • Issue RFQs/RFPs, review quotations, and prepare compliance statements with recommendations.
  • Support material selection and ensure compliance are aligned with project specifications.
  • Execution, Testing & Commissioning
  • Provide design clarifications and technical assistance during site execution phase.
  • Oversee BMS programming, integration, and HVAC control logic during commissioning.
  • Witness and validate functional testing of HVAC equipment and BMS systems.
  • Ensure preparation and approval of commissioning reports, O&M manuals, and handover documents.

Qualifications

You’re a Great Fit If You Have

  • Bachelor’s Degree in Mechanical Engineering or equivalent.
  • 5–8 years of experience in HVAC design, coordination, technical office, and commissioning.
  • Strong expertise in Air system & chilled water, Chillers, DX, VRF/VRV, ventilation, smoke management, and HVAC-BMS integration.
  • Proven experience in data center projects, airports, industrial plants, and infrastructure developments, in addition to high-rise, hospitality, and healthcare
  • facilities.
  • Strong knowledge of UAE authority requirements (Municipality, Civil Defense, etc).
  • Proficiency in, HAP, and other design software’s
  • Knowledge in AutoCAD, BIM coordination tools.
  • Ability to establish tracking systems for engineering deliverables.
  • Excellent presentation, reporting, and communication skills.
  • Self-motivated with the ability to work independently and take ownership of deliverables.

Why You’ll Enjoy Working with Us

  • Exciting Projects
  • Career Growth
  • Diverse Team
  • Competitive Benefits
  • Positive Workplace Culture

Additional Information

Six Construct is guided by our core values of respect, excellence, co-creation, passion, and unity. Our values are at the heart of everything we do, creating a diverse and inclusive workplace where everyone feels valued, secure, and motivated to reach their full potential.

Key Skills
HVAC DesignTechnical DocumentationBIM CoordinationSustainability RequirementsValue EngineeringAir SystemChillersVentilationSmoke ManagementBMS IntegrationAutoCADHAPCommunication SkillsPresentation SkillsProblem SolvingProject Coordination
Categories
EngineeringConstruction
Benefits
Career GrowthDiverse TeamCompetitive BenefitsPositive Workplace Culture
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