Electrical And Instrumentation Engineer

Senior Electrical & Instrumentation Engineer

Location - Decatur, IL | phoenix, Arizona | Ohio (3 locations)

Onsite

Job Description & Skill Requirement:

Primary Responsibilities-

Functional Safety & SIS Lifecycle Leadership:

- Own and administer the site and regional SIS Functional Safety Management System, including procedures for proof testing, bypass management, overrides, demand reporting, and documentation control.

- Lead and/or facilitate hazard and risk studies (PHA/HAZOP, LOPA, What if) to identify Safety Instrumented Functions and assign/confirm SIL targets;
ensure alignment between initiating events, safeguards, and required risk reduction.

- Develop and maintain SIS Safety Requirements Specifications (SRS), Cause & Effect matrices, logic narratives, and setpoint documentation for SIFs (ESD, BMS, Fire & Gas, critical interlocks, and trip functions).

- Perform or oversee SIL verification calculations (PFDavg / PFH, proof test intervals, common cause, hardware fault tolerance) and document assumptions, failure data, and test coverage;
recommend redesigns where targets are not met.

- Plan and coordinate Functional Safety Assessments/Audits (FSA stages as applicable) for new projects and for existing SIS;
track findings to closure via MOC / corrective action processes.

- Maintain a functional safety competence and training approach for engineers, technicians, and contractors who design, maintain, or test SIS.

Reliability, Maintenance and Performance Management

- Define and continuously improve SIS and critical instrumentation maintenance strategies, including proof test procedures, calibration standards, and test frequency optimization based on lifecycle reliability and risk.

- Ensure all SIS assets (logic solvers, I/O, networks, final elements, sensors) are accurately registered in the CMMS with correct hierarchy, attributes, spares, and preventive maintenance/work instructions.

- Monitor SIS performance (spurious trips, demand rates, bypass frequency, proof test compliance, instrument bad-actor lists) and report against established KPIs;
drive targeted improvement plans.

- Lead root cause investigations for SIS demands, nuisance trips, and instrument failures;
implement corrective and preventive actions and update safety requirements specification/proof tests where required.

- Partner with Operations, Maintenance, EHS/Process Safety, and IT to ensure SIS cybersecurity and change control practices support functional safety and availability.

Capital Project and Modernization Support:

- Provide SIS and critical instrumentation leadership for capital projects from FEL through commissioning, ensuring SIS scope is clearly defined, budgeted, and delivered to functional safety requirements.

- Review and approve contractor deliverables including ISA datasheets, instrument index, loop drawings, wiring diagrams, P&IDs, logic diagrams, control narratives, shutdown keying philosophy, and commissioning/validation procedures.

- Ensure SIS design is consistent with applicable standards and good engineering practice (IEC 61511/ISA 84, IEC 61508 concepts, IEC 62443 where applicable, NFPA/NEC for electrical installations, hazardous area requirements).

- Drive standardization and obsolescence management for SIS platforms and safety rated devices;
develop roadmaps for migration, spares, lifecycle support, and test strategy continuity.

- Lead or support field commissioning, SIS validation, and functional testing;
ensure comprehensive turnover packages (as-builts, SRS, proof tests, bypass lists, O&M, training, CMMS upload confirmation) are complete at handover.

Governance, Risk Management and Technical Leadership:

Qualification:

- Bachelor's degree in Engineering/ Instrumentation and Control Engineering.