Mechanical Engineer

Advius; Pretoria; On-site; ZAR 450,000 - 650,000; Full time

Job summary

Advius is seeking a Mechanical Engineer with strong HVAC experience to lead design, installation and commissioning of building services in Centurion. The role blends hands-on engineering with direct client contact, from initial calculations to final handover.

The ideal candidate has 3–6 years in building services, substantive HVAC know‑how, and proficiency in AutoCAD. On-site collaboration with contractors and clients is required, with travel to sites as needed.

Qualifications

• BEng / BSc Eng (Mechanical) or equivalent with 3–6 years in building services.
• Proven HVAC design, installation and commissioning experience.
• Proficiency in AutoCAD; knowledge of HVAC design software (e.g. HAP, Revit MEP or similar) is advantageous.
• Valid driver’s licence and own transport.
• Familiarity with SANS 10400 and SANS 10173 is preferred.

Responsibilities

• HVAC Design – size and specify systems (chillers, AHUs, VRF/VRV, ducts).
• Perform heat load calculations and equipment selection.
• Prepare drawings, specifications, BOQs and submissions.
• Oversee installation, commissioning and handover to client.

Skills

HVAC design

Client liaison

Project coordination

On-site supervision

Analytical thinking

Communication skills

Education

BEng / BSc Eng (Mechanical)

BTech / BEngTech / National Diploma (Mechanical Engineering)

Tools

AutoCAD

HAP

Revit MEP

Job description

Pretoria, South Africa | Posted on 10/28/2026

Our client is an established building services company that designs, installs and maintains mechanical systems for commercial, industrial and institutional buildings. Known for its technical quality and long-standing client relationships, the business is strengthening its engineering team and is looking for a Mechanical Engineer based in Lyttelton, Centurion.

The Mechanical Engineer will take technical ownership of HVAC and related building services projects, from design through to handover and ongoing maintenance. The role combines hands-on engineering with direct client contact, so the right person is as comfortable in a client meeting as on site.

KEY RESPONSIBILITIES INCLUDE

• HVAC Design – Design, size and specify HVAC systems, including chillers, AHUs, VRF/VRV, split and ducted systems, and ventilation and extraction.
• Calculations & Selection – Carry out heat load calculations, duct and pipe sizing, and equipment selection.
• Technical Documentation – Prepare and review drawings, specifications, BOQs and technical submissions.
• Installation & Commissioning – Oversee installation, commissioning and handover, ensuring all work complies with SANS 10400, SANS 10173 and relevant OHS requirements.
• Client Liaison – Act as the technical point of contact for clients: run site meetings, handle queries and resolve complaints quickly and professionally.
• Fault Diagnosis – Diagnose system faults and recommend corrective and energy-efficient solutions.
• Maintenance & Service Contracts – Support preventative maintenance planning and the delivery of service contracts.
• Coordination – Coordinate with contractors, suppliers, technicians and other building services disciplines (electrical, fire and plumbing).
• Quotations & Reporting – Prepare quotations, site reports and project progress updates.
• Project Control – Monitor project timelines, budgets and quality standards.

Requirements

MINIMUM REQUIREMENTS

• BEng / BSc Eng (Mechanical), or BTech / BEngTech / National Diploma (Mechanical Engineering)
• 3 – 6 years’ experience in building services, with a strong HVAC focus
• Proven experience in HVAC design, installation and commissioning
• Customer-facing experience in managing client relationships and service delivery
• Proficiency in AutoCAD; experience with HVAC design software (e.g. HAP, Revit MEP or similar) is advantageous
• Working knowledge of SANS 10400 and SANS 10173
• Valid driver’s licence and own reliable transport

ADVANTAGEOUS

• Registration (or progress towards registration) with ECSA as a Candidate or Professional Engineer / Technologist
• Experience with building management systems (BMS) and energy-efficiency projects
• Experience on green building / GBCSA-rated projects

SKILLS & ATTRIBUTES

• Strong technical problem-solving and analytical ability
• Excellent client service and communication skills
• Organised, deadline-driven and able to manage several projects at once
• Confident on site and comfortable dealing with contractors and clients at all levels
• Takes ownership and follows through

IDEAL CANDIDATE PROFILE

The ideal candidate is a mechanical engineer or technologist with solid, hands‑on HVAC experience across design, installation and commissioning in a building services environment. They are technically strong, comfortable working to SANS standards, and confident leading site meetings and managing clients and contractors. They take ownership of their projects from first calculation to final handover, and keep a close eye on quality, timelines and budgets.