As a Senior OT Design Manager - SCADA & Control Systems, you will advise and support the full lifecycle design of complex automated control systems, with a focus on water utility operations. Your responsibilities include: Leading SCADA and control system architecture planning Developing and reviewing standard designs and software templates Supporting process control strategies including cascade and constraint control Advising on plant sequencing, chemical dosing control, and hydraulic system logic Reviewing and updating OT and ISA-compliant design documentation Mentoring junior engineers and contributing to long-term capability development The position is part-time (15-22 hours/week) and ideal for a senior consultant or engineer with experience influencing OT outcomes in infrastructure environments. You're a degree-qualified engineer with 15-20 years of experience in SCADA and control systems design. You have deep knowledge of ISA standards, software templating, system sequencing, process optimisation, and OT architecture design. Experience in plant automation for infrastructure, particularly water utilities, is highly regarded. You'll be confident collaborating with multidisciplinary stakeholders, producing technical documentation, and advising on best practice standards in a high-compliance, safety-critical environment. Clearances required: Police check, drug and alcohol screening, and standard employment checks. This is a 6-month part-time contract role, commencing 1 July 2025, based in Leederville. You'll work on high-impact public infrastructure projects and receive up to $130/hr. Flexible scheduling, strategic responsibility, and a highly collaborative team make this a standout opportunity for an experienced OT professional.