Company Description

Six Construct, a subsidiary of the BESIX Group, is the largest Belgian construction company operating in the Middle East. The company combines the efforts of a highly skilled workforce, along with strategic planning and innovative use of technology to overcome the most complex business challenges. Six Construct is a multi-services company that operates in the construction of commercial and residential buildings, sport and leisure facilities, infrastructure and marine-related projects. The company currently employs a workforce of approximately 4,000 in the Middle East, and a total of 10,000 worldwide.

Job Description

Why This Role Matters?

• The DCS (Distributed Control System) & Instrumentation Engineer is essential to keeping the sewage treatment plant running safely, reliably, and efficiently. This role ensures that all automation, control systems, and instruments work correctly-protecting people, the environment, and plant performance.

What You Will Drive

A DCS & Instrumentation Engineer with strong expertise in Yokogawa DCS (e.g., CENTUM/Prosafe) and SCADA systems for sewage treatment plant operations. The role involves end-to-end responsibility for process control, instrumentation asset reliability, and industrial communications, with a particular focus on maintaining the health and performance of Profibus (DP/PA) networks. The engineer must have experience working in corrosive, H₂S-prone STP environments, ensuring safety, regulatory compliance, continuous operations, and overall optimization of plant performance.

• DCS / SCADA & Control Systems
  • Administer, operate, and optimize Yokogawa DCS, including control strategies, graphics, alarms, trends, historian tags, and backup/restore.
  • Maintain and enhance SCADA interfaces, dashboards, and reporting for O&M and compliance KPIs.
  • Develop, test, and implement logic modifications (loop tuning, interlocks, permissives, sequences) with strict MOC procedures.
  • Manage alarm rationalization and limit settings to reduce nuisance alarms and improve operator effectiveness.
  • Coordinate factory and site acceptance testing (FAT/SAT) for control system changes and expansions.
• Instrumentation
  • Own the lifecycle of field instruments, including selection, installation, calibration, loop checks, diagnostics, and replacement.
  • Typical devices include DO, pH/ORP, turbidity/SS, ammonium/nitrate, chlorine, flow (magnetic/ultrasonic), pressure, level (radar/ultrasonic), vibration, temperature, and gas detection.
• Profibus DP/PA & Industrial Communication
  • Ensure Profibus DP/PA network reliability, including topology design, segment diagnostics, termination, shielding/earthing, redundancy, spur lengths, baud rates, device addressing, and GSD management.
  • Use diagnostic tools (e.g., bus analyzers) to identify noise, reflections, voltage drops, telegram errors, and intermittent faults.
  • Integrate field devices via Profibus PA couplers/links, gateways, and interfaces to Yokogawa DCS/SCADA; maintain device libraries.
  • Collaborate with electrical and control teams for EMI mitigation, proper cable routing, and panel/earthing standards.
  • Support interfaces with MCCs/VFDs, PLC skids, and plant SCADA/IMS/CMMS systems.
• Safety, Compliance & Cybersecurity
  • Ensure all DCS/SIS activities comply with plant safety standards, IEC standards, and cybersecurity policies.
  • Strengthen OT cybersecurity posture through access control reviews, patch management, and secure network segmentation.
  • Develop a long-term DCS roadmap covering upgrades, expansions, and obsolescence risks (software and hardware).

Qualifications

You're a Great Fit if You Have

• Bachelor's degree in Instrumentation & Control, Electrical, Electronics, or a related engineering discipline
• 5-10 years of experience in process automation, with strong hands-on expertise in Yokogawa DCS/SCADA within water, wastewater, or similar process plant environments
• Proven experience in Profibus DP/PA commissioning, troubleshooting, and diagnostics
• Solid background in instrumentation for STP processes, including work in hazardous and corrosive environments (H₂S-prone areas)
• Familiarity with SIS/ESD systems (e.g., ProSafe-RS), alarm management, loop tuning, and historian/reporting tools
• Experience working with CMMS and IMS documentation systems

Why You'll Enjoy Working with Us

• Exciting Projects
• Career Growth
• Diverse Team
• Competitive Benefits
• Positive Workplace Culture

Additional Information

Six Construct is guided by our core values of respect, excellence, co-creation, passion, and unity. Our values are at the heart of everything we do, creating a diverse and inclusive workplace where everyone feels valued, secure, and motivated to reach their full potential.