Senior Mechanical Engineer — Energy Systems Leader

Eskom; South Africa; On-site; ZAR 900,000 - 1,300,000; Full time

Job summary

Eskom in Johannesburg seeks a Senior Mechanical Engineer to lead energy systems design and delivery. You will drive thermal design, costing, manufacturing support, and commissioning across heat exchangers and process plants.

The role requires a strong background in heat transfer, thermodynamics, and project execution, with site travel as needed. You will collaborate with contracts, manufacturing, and client teams to ensure compliant, quality outcomes.

Qualifications

• 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.
• Experience in ASME, TEMA, API, or relevant SANS standards.

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

Heat exchangers

Thermal design calculations

Process equipment

Cost estimation

Tender preparation

Project execution

Thermodynamics

Mechanical design

Engineering documentation

Client-facing support

Education

BEng, BSc, or BTech in Mechanical Engineering

Job description

Senior Mechanical Engineer Energy Systems Leader

Posted: 22 October 2026

Salary: ZAR Negotiable

Start date: 21 October 2026

Location: Johannesburg

Job type: Permanent

Discipline: Industrial Manufacturing, Oil Gas and Chemicals

Reference: Job Function Mechanical Engineer

Job description: Our client is a well-established South African process engineering company specializing in the design, manufacture, and supply of heat exchangers, thermal equipment, and process plants. Founded in 1987, the company provides innovative engineering solutions to industrial clients across multiple sectors and is recognized for its expertise in heat transfer technology, process engineering, and thermal system design. We are seeking an experienced Mechanical Engineer to join their specialist engineering team. This role offers the opportunity to work on the design, costing, manufacture, and commissioning of heat exchangers and related process plant equipment while supporting projects from concept through to completion. This role is located in Gauteng.

• 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.

• 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.

• ECSA registration (Pr Eng or Pr Tech Eng).
• Experience in pressure equipment, piping systems, and industrial process plants.
• Knowledge of ASME, TEMA, API, or relevant SANS standards.
• Exposure to commissioning and troubleshooting of thermal systems.

We are an equal opportunity employer. All qualified individuals will receive consideration for employment without regard to race; color; age; sex; sexual orientation; gender identity; religion; national origin; disability;