Senior SIS Engineer

We are seeking an experienced Safety Instrumented System Engineer for a client of ours in the Vancouver area.

This position will oversee the SIS program and and will be responsible for governance and oversight of the functional safety lifecycle, ensuring compliance with IEC 61511 and functional safety requirements, and providing technical leadership and subject matter expertise throughout the lifecycle of SIS and BMS applications. This position supports process safety, regulatory compliance, capital project execution, commissioning, startup, and lifecycle management activities across plant operations. The successful candidate will develop and maintain Safety Requirements Specifications, support process hazard analyses and risk assessment activities, and provide technical oversight for SIS- and BMS-related projects and process safety initiatives. Responsibilities include supporting new projects, sustaining existing systems, and providing technical expertise to ensure SIS and BMS applications are designed, implemented, maintained, and operated in accordance with functional safety requirements throughout their lifecycle.

Responsibilities

SIS Lifecycle Management

-Develop, maintain, and continuously improve Safety Instrumented System (SIS)asset strategies, proof-test requirements, and preventive maintenance requirements to ensure ongoing compliance with Safety Requirement Specifications (SRS) and functional safety requirements.

-Assess SIS performance, reliability, and operating history prior to changes in proof-test intervals, testing frequencies, or preventive maintenance requirements.

-Conduct risk assessments and provide technical review of SIS testing and preventive maintenance deferrals.

-Evaluate SIS-related Management of Change (MOC) requests involving modifications, logic changes, configuration changes, impairments, bypasses, or decommissioning activities.

-Maintain SIS application logic, configuration records, backups, and version control.

-Perform and document validation, verification, and QA/QC activities following SIS modifications, repairs, replacements, or upgrades.

-Develop and maintain the approved equipment list for SIS applications and services.

-Review and approve changes to SIS proof-test procedures and testing methodologies.

-Review and approve alternative testing strategies following turnarounds, outages, or extended equipment downtime.

-Maintain SIS process safety information, lifecycle documentation, testing records, and associated compliance records.

-Support Functional Safety Assessments (FSA) and provide technical stewardship of the SIS program to ensure SIS design, asset strategies, proof-test requirements, maintenance requirements, and testing intervals remain aligned with approved Safety Requirement Specifications (SRS) throughout the SIS lifecycle.

SIS Design, Implementation

-Develop and maintain Safety Requirement Specifications (SRS), Cause & Effect Diagrams and Control Narratives for new and modified SIS applications.

-Perform SIL determination and verification calculations and ensure proper implementation of Safety Instrumented Functions (SIFs).

-Develop, review, and approve Functional Design Specifications, Safety Validation Plans, SIS logic, and Factory Acceptance Test (FAT) procedures.

Process Safety & Regulatory Compliance

-Provide SIS expertise during PHA, HAZOP, and LOPA studies, including SIF identification, SIL determination, safeguard assessment, and development of SIS requirements.

-Review P&IDs, MOCs, and engineering deliverables to ensure SIS scope is properly identified and executed.

-Serve as the Subject Matter Expert for SIS and Burner Management Systems.

-Ensure SIS and BMS applications comply with applicable regulations, corporate standards, and industry best practices.

-Support compliance with IEC 61511, IEC 61508, CSA B149.3, and applicable Technical Safety BC requirements. Project Delivery & Technical Support

-Act as technical lead for SIS and BMS capital projects and provide technical guidance throughout project execution.

-Review, provide guidance on, and approve SIS-related engineering deliverables, vendor packages, and design documentation.

-Support FEL, detailed engineering, procurement, FAT, commissioning, startup, and operational readiness activities.

-Lead SIS validation, commissioning support, and troubleshooting activities, ensuring SIS and BMS applications operate in accordance with functional safety requirements.

-Coordinate with Operations, Maintenance, Engineering, and external contractors to deliver projects safely and effectively.

Qualifications

-Bachelor's degree in Engineering, preferably Instrumentation, Controls, Electrical, Chemical, or a related discipline.

-Professional Engineer (P.Eng.) designation or eligibility for registration in British Columbia is preferred.

-Minimum 7-10 years of experience in process controls, instrumentation, functional safety, SIS, BMS, or related engineering roles.

-Demonstrated experience with SIL determination, SIL verification, Safety Requirements Specifications (SRS), and participation in PHA/HAZOP/LOPA studies.

-Strong working knowledge of IEC 61508 and IEC 61511 functional safety standards and their practical application within industrial process facilities.

-Experience conducting or supporting PHA, HAZOP, LOPA, SIF identification, SIL determination, and SIL verification activities.

-Strong knowledge of Burner Management Systems, combustion safeguarding systems, and CSA B149.3 requirements.

-Experience reviewing and developing SRS documents, Cause & Effect matrices, control narratives, validation procedures, and functional design specifications.

-Experience supporting FAT, commissioning, startup, and operational readiness activities for SIS and BMS projects.

-Experience with refinery, petrochemical, oil & gas, chemical processing, or other hazardous industrial facilities is preferred.

-Experience with Yokogawa ProSafe-RS SIS platforms is considered an asset.

-TÜV Functional Safety Engineer (FSEng) certification or equivalent functional safety qualification is considered a strong asset.