Lead Process Engineer– Modular Water&Wastewater Plants, Johannesburg

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

Salary R50 000 CTC (depending on experience)

Job Description Shape the Future of Modular Water Treatment Solutions A leading privately owned engineering company within the water treatment sector is seeking a skilled Process Engineer to join its growing technical team. The business designs and delivers modular water and wastewater treatment plants for clients across healthcare, hospitality, education, manufacturing, commercial, and industrial sectors throughout South Africa and neighbouring African countries.

This role offers the opportunity to take ownership of the full process engineering lifecycle— from process design and hydraulic modelling through to commissioning and performance optimisation. The environment is entrepreneurial, collaborative, and highly dynamic, making it ideal for an engineer who enjoys variety, technical ownership, and continuous growth.

You’ll play a critical role in developing fit‑for‑purpose treatment solutions that directly impact water quality, sustainability, and operational efficiency for clients across diverse industries.

Key Responsibilities

Design and optimise water and wastewater treatment processes for modular treatment systems

Develop process flow diagrams (PFDs), P&IDs, equipment specifications, and control narratives

Perform hydraulic modelling and process calculationsSelect and specify treatment equipment and process technologies

Support commissioning activities including FAT/SAT testing, startup, and performance validation

Troubleshoot process, hydraulic, and operational issues during implementation and operation

Work closely with mechanical, project, and manufacturing teams to ensure seamless project delivery

Assist with proposal development, technical submissions, and client solutions

Monitor plant performance and recommend optimisation improvements

Support operator training, handover documentation, and long‑term process performance

Mentor junior engineers and contribute to technical team development

Requirements Candidate Requirements

Degree in

Chemical or Process Engineering

Minimum

6 years’ experience within water or wastewater treatment environments

Strong

understanding of potable water and wastewater treatment processes

Experience with technologies including

UF/NF/RO membranes, filtration, ion exchange, biological treatment, and disinfection systems

Knowledge of

hydraulic modelling and process design software

Familiarity with

SANS 241 and wastewater discharge regulations

Strong analytical, mathematical, and problem‑solving capability

Experience working with

PFDs, P&IDs, and commissioning processes

Ability to

work both independently and within cross‑functional project teams

Strong communication and stakeholder engagement skills

Why Join This Opportunity?

Join a growing and highly entrepreneurial engineering business

Opportunity to work on technically diverse projects across Southern Africa

Exposure to full project lifecycles from concept through commissioning

High level of autonomy and technical ownership

Collaborative team culture with strong opportunity for professional growth

Work on impactful projects that contribute to sustainable water solutions

Salary&Benefits

R50 000 CTC (Negotiable based on experience)

Career growth and development opportunities

Exposure to regional engineering projects

Dynamic and supportive working environment

How to Apply If you are passionate about process engineering and want to be part of a company delivering innovative water treatment solutions across Africa, 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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