Mechanical Engineer - Water Treatment

Johannesburg, South Africa Posted on 18/05/2026

• Salary R50,000 CTC (depending on experience)

An exciting opportunity is available with a dynamic and entrepreneurial engineering business operating in the water treatment industry. This privately owned company designs and builds modular water treatment plants for a wide range of sectors including healthcare, education, hospitality, manufacturing, and commercial environments across South Africa and neighbouring African countries.

This is an ideal opportunity for a hands on Mechanical Engineer who enjoys working across the full project lifecycle - from concept and design through to implementation and commissioning. The environment is fast paced, collaborative, and offers exceptional exposure to multidisciplinary engineering projects where your contribution will directly influence the success of each solution.

You'll work closely with process engineers, project teams, and manufacturing to design practical, fit for purpose modular treatment systems that solve real world water challenges.

• Design and develop mechanical systems and components for modular water treatment plants
• Assist with plant layouts, piping systems, pump selection, and equipment integration
• Produce and support CAD drawings, 3D models, and technical documentation
• Work closely with Process Engineers to ensure optimal treatment flow and plant functionality
• Participate in the drafting and review of P&IDs
• Support manufacturing and installation teams to ensure designs are implemented correctly
• Conduct site visits and verify installed systems against design specifications
• Assist with equipment sizing, material selection, and mechanical calculations
• Contribute to testing, commissioning, and performance validation activities
• Ensure compliance with quality, safety, and engineering standards

• Degree or Diploma in Mechanical
• Minimum 4 years' experience in a mechanical engineering environment (water/wastewater process plants)
• Strong understanding of piping systems, pumps, flow rates, and pressure systems
• Experience working with AutoCAD and CAD modelling software (Inventor)
• Knowledge of water treatment technologies such as UF/NF/RO membranes, filtration, ion exchange, and disinfection systems
• Ability to work independently while collaborating effectively within a multidisciplinary team
• Strong communication and problem solving skills
• High attention to detail with a practical engineering mindset
• ECSA registration advantageous

• Work within a small, agile engineering team where your ideas and input matter
• Exposure to technically interesting projects across multiple industries
• Opportunity to grow beyond a narrow job scope and develop broader engineering capability
• Be involved in projects from concept design through to commissioning
• Dynamic and entrepreneurial company culture with strong growth potential
• Regional project exposure across Southern Africa

• R50,000 CTC (Negotiable based on experience)
• Opportunity for career growth and technical development
• Collaborative and supportive team environment

If you are a driven Mechanical Engineer looking to grow your career within an innovative water treatment environment, we would love to hear from you. Apply directly through SQ1 Recruitment.

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