Mechanical Engineer - Water Treatment, Johannesburg

Johannesburg, South Africa | Posted on 18/05/2026

Salary R50,000 CTC (depending on experience)

Job Description Build Innovative Water Treatment Plants That Make a Real Impact 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.

Key Responsibilities

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

Requirements Candidate Requirements

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

Why Join This Opportunity?

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

Salary&Benefits

R50,000 CTC (Negotiable based on experience)

Opportunity for career growth and technical development

Collaborative and supportive team environment

How to Apply 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.

By applying for this position, you consent to the processing of your personal information in accordance with the Protection of Personal Information Act (POPIA) for recruitment purposes.

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