Controls Engineer

Controls Systems EngineerWe are seeking an experienced Controls Systems Engineer to provide onsite support for critical refinery control systems. This individual will play a key role in maintaining the safety, reliability, and performance of Distributed Control Systems (DCS), Safety Instrumented Systems (SIS), and Programmable Logic Controllers (PLC) supporting refinery operations, with a primary focus on Siemens S7 PLC platforms and hydrogen processing units.This position will support day-to-day operations, troubleshooting, system lifecycle management, compliance activities, and minor capital project execution within a highly regulated industrial environment.Control Systems Operations & SupportSupport and maintain refinery DCS, SIS, and PLC systems to ensure reliable plant operations.Monitor and maintain system health, database integrity, historian applications, backups, and system performance.Perform server maintenance activities including patching, reboot management, and system administration tasks.Configure and maintain operator graphics, alarms, control points, and related system components.Troubleshoot PLC logic issues and implement approved updates and configuration changes.Safety Instrumented Systems (SIS)Support SIS lifecycle management activities and annual testing programs.Coordinate testing schedules and documentation efforts.Participate in Factory Acceptance Testing (FAT) activities.Perform basic logic validation and troubleshooting of safety systems.Assist with spare parts and inventory management for critical SIS components.Instrumentation & Integration SupportSupport routine instrument troubleshooting and maintenance activities.Troubleshoot third-party control and monitoring devices, including systems such as Woodward and Trisen.Maintain and troubleshoot control system integrations and data transfer logic between systems.Network & Infrastructure SupportMaintain control network integrity and reliability.Administer IP address management within DCS, SIS, and PLC environments.Support servers, application nodes, thin clients, and wireless I/O infrastructure.Assist with hardware, connectivity, and control system infrastructure troubleshooting.Reporting, Monitoring & ComplianceGenerate and maintain alarm management metrics and performance reports.Configure and support system alerting and monitoring tools.Execute work in compliance with Management of Change (MOC) procedures.Document system changes, troubleshooting activities, and configuration updates according to company standards.Lifecycle Management & Project SupportSupport control system upgrades, migrations, obsolescence planning, and reliability improvement initiatives.Implement minor control system modifications, including new control strategies and equipment integrations.Perform functional testing, commissioning support, and validation activities.Collaborate with operations, maintenance, engineering, and reliability teams on continuous improvement projects.On-Call SupportParticipate in on-call support rotations to ensure rapid response to critical operational issues and system outages.Required Qualifications8+ years of experience supporting industrial control systems in refinery, petrochemical, oil & gas, or similar process manufacturing environments.Hands-on experience with Siemens S7 PLC systems.Experience supporting DCS, SIS, and PLC environments in an operational facility.Strong troubleshooting skills across control systems, instrumentation, and industrial networks.Experience with control system lifecycle management, testing, and system upgrades.Working knowledge of Management of Change (MOC) processes and process safety practices.Preferred QualificationsExperience with Allen-Bradley PLCs.Experience supporting refinery operations or hydrogen processing units.Familiarity with alarm management programs and performance reporting.Exposure to Factory Acceptance Testing (FAT), commissioning, and system validation activities.Knowledge of industrial networking, virtualization, and control system infrastructure.What We're Looking ForStrong analytical and troubleshooting abilities.Ability to work independently in a fast-paced operational environment.Excellent communication and collaboration skills.Commitment to safety, reliability, and operational excellence.Ability to effectively prioritize workload and respond to production-critical issues.