Mechanical Engineer – Heat Exchangers & Thermal Systems

BruntWork; South Africa; On-site; ZAR 480,000 - 720,000; Full time

Job summary

BruntWork in Johannesburg is seeking an experienced Mechanical Engineer to join their process engineering team. You will contribute to the design, costing, manufacture and commissioning of heat exchangers and related equipment, supporting projects from concept through to completion.

The role requires a strong background in heat transfer, thermodynamics and mechanical design, plus willingness to travel to sites and work with clients. ECSA registration is advantageous.

Qualifications

• BEng, BSc, or BTech in Mechanical Engineering.
• 5+ years of mechanical engineering experience within process plant, manufacturing, thermal systems, or industrial environments.
• Experience with heat exchangers, thermal design calculations, and process equipment.
• Proven exposure to cost estimation, tender preparation, and project execution.
• Strong understanding of thermodynamics, heat transfer, and mechanical design principles.
• Proficiency in engineering documentation and client-facing technical support.
• Valid driver's license and willingness to travel to sites as required.

Responsibilities

• Perform thermal design and calculations for plate and shell & tube heat exchangers.
• Prepare technical proposals, tenders, quotations, and cost estimates.
• Develop equipment designs and review engineering drawings and documentation.
• Coordinate engineering activities with contracts, manufacturing, and project teams.
• Provide technical support to clients and sales teams.
• Oversee workshop quality control and manufacturing activities.
• Assist with commissioning, troubleshooting, and site support.
• Manage supplier engagement, procurement activities, and vendor documentation.
• Ensure compliance with QA/QC standards and document control requirements.

Skills

Thermal design

Heat transfer

Mechanical design

Project execution

Cost estimation

Client-facing support

Education

BEng/BSc/BTech in Mechanical Engineering

Tools

ASME standards

TEMA standards

API standards

SANS standards

Job description

BruntWork in Johannesburg is seeking an experienced Mechanical Engineer to join their process engineering team. You will contribute to the design, costing, manufacture and commissioning of heat exchangers and related equipment, supporting projects from concept through to completion.

The role requires a strong background in heat transfer, thermodynamics and mechanical design, plus willingness to travel to sites and work with clients. ECSA registration is advantageous.