- MBR Technology / Wastewater Treatment / Hybrid Working -
A leading company in the water treatment and environmental technology sector is currently recruiting a Wastewater Treatment Engineer specialising in Membrane Bioreactor (MBR) technology.
The role will support the design, development, and optimisation of wastewater treatment solutions, including process engineering, plant design, technical feasibility studies, and system performance optimisation.
The successful candidate will work closely with international engineering teams, external technical partners, and customers. The adecuado candidate should have practical wastewater treatment engineering experience and strong technical knowledge of MBR technology.
Main Responsibilities
Conduct technical analyses and feasibility studies for industrial and municipal wastewater treatment projects
Design, size, and optimise Membrane Bioreactor (MBR) wastewater treatment plants and systems
Perform process calculations, hydraulic assessments, and technical evaluations
Develop technical specifications, process flow diagrams (PFDs), and engineering documentation
Evaluate wastewater characteristics and treatment requirements to optimise system performance
Provide technical support for MBR system integration, installation, commissioning, and operation
Troubleshoot wastewater treatment processes, membrane performance, and system efficiency issues
Coordinate with external engineering consultancies, equipment suppliers, technical partners, and customers
Ideal Candidate
Bachelor's or Master's degree in Environmental Engineering, Chemical Engineering, Process Engineering,



or a related technical discipline
At least 3 years' experience in wastewater treatment engineering, process design, or technical project development
Strong technical knowledge of MBR technology, including biological treatment processes and membrane filtration systems
Experience in wastewater treatment plant design, sizing, process calculations, and technical feasibility assessments
Understanding of BOD, COD, TSS, nitrogen removal, and membrane filtration performance
Experience in technical troubleshooting, process improvement, and wastewater treatment plant performance assessment
Fluency in Spanish and English, both spoken and written
AutoCAD knowledge and Portuguese language skills are advantageous
Willingness to travel for site inspections, technical assessments, and project-related activities
Conditions
Location:
Catalonia, Spain
Working Style:
hybrid, 3 days a week in office, 2 days working from home
Salary:
competitive, depending on experience
Job Type:
permanent, full-time
Working Hours:
Monday to Friday, 9:*:00, travel for business needed for up to 50% of working time
Start:
ASAP
*All applicants for the Wastewater Treatment Engineer position must have the right to work in Spain without any restrictions as the Company is not able to offer visa support.
*We regret that we cannot accept applications from Working Holiday, Graduate or Student visa holders.
If your application is successful, you will be contacted within two business days. We regret that due to the high volume of applications we receive we cannot provide feedback on individual CVs.
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