Senior Instrumentation Engineer

Job Summary The Senior Instrumentation Engineer is responsible for managing client projects and for assuring high quality and timely completion of engineering designs and reports. The Senior Engineer should be comfortable interfacing with the clients, visiting clients’ facilities and performing physical work such as walking, stooping, kneeling and climbing stairs/ladders. Key responsibilities include technical calculations and preparation of I&C deliverables. Key Responsibilities Instrumentation Engineering (Primary) Lead detailed design of instrumentation systems for EPC projectsP&IDs in regard to instrument and control philosophyMaintain instrument index and I/O lists for DCS, PLC, and SIS systemsDevelop instrument datasheets (flow, level, pressure, temperature, analyzers) and complete instrument sizing and calibration drawingsSpecify and apply measurement technologies based on process conditions and installation requirements, i.e. DP flow, Coriolis, ultrasonic, radar, GWR, etcValve specifications and sizing (control valves, regulators, on/off valves)Perform loop design, control wiring and loop drawing developmentDevelop wiring infrastructure and interconnects for junction boxes, local control panels, marshalling panels, and control systemDefine installation details, i.e. Hook-ups, tubing layouts, impulse lines, thermowellsInstrument location plans and cable and conduit routing plansRead motor schematics and develop control system interface with starters and VFDsReview of vendor drawing submittalsTechnical evaluation of bidsAssistance in field workSupport of construction and startup/commissioning activities Control Systems Engineering (Secondary) Support control system architecture designDevelop:Control narratives and functional descriptionsCause & Effect matrices Interface with control system vendors and system integratorsReview logic diagrams, interlocks, and shutdown systemsParticipate in FAT/SAT and commissioning activities Project Execution Execute work across:FEED studies, FEL 1/2/3, ExecuteDetailed engineeringMinimal Construction support Coordinate with: Process, mechanical, electrical, and piping disciplinesReview P&IDs and ensure instrumentation alignmentProvide technical input for procurement packages and vendor evaluationsProvide MTOs to estimating departmentManage deliverables, budgets, schedules, and technical quality Leadership & Technical Authority Discipline lead on assigned projectsMentor junior and mid-level engineersAct as technical checker for construction package and calculationsDrive standardization and best practices across projectsInterface directly with clients and stakeholdersProvide technical troubleshooting and problem-solving support Qualifications 8+ Years of Engineering ExperienceDemonstrated experience in: Oil & Gas, Petrochemical / Refining, Chemical or heavy industrial facilitiesWorking knowledge of Microsoft Office productsProject lead experience developing engineering schedules, budgets and forecastsExcellent verbal and written communication skillsAbility to work effectively in teams and to present a positive image to clientsWorking knowledge of AutoCAD and 3-D CAD a plusEngineering design tools and calculationsKnowledge of Industry Standards (ISA, PSM, etc.) Education/Certification Requirements BS Degree in Chemical or Electrical Engineering or Mechanical EngineeringAdvanced degree, and/or P.E. certification a plusSIS certification a plusActive participation in professional organizations a plus About Nexus Engineering Group Nexus Engineering Group, a distinguished independent full-service engineering, procurement, and construction management (EPCm) firm, provides comprehensive support to clients from concept through startup. With over a decade of demonstrated engineering and design success, Nexus stands out as the firm of choice for those valuing integrity and expertise. At Nexus, you will be part of a talented and passionate team dedicated to excellence and innovation. We foster a collaborative and engaging work environment, making it a place where you’ll enjoy contributing to impactful projects. Joining Nexus means aligning with a firm renowned for its creativity, dedication, and relentless focus on achieving client goals. Equal Opportunity Employer & Reasonable Accommodation Nexus Engineering Group, Inc. is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law. Nexus Engineering Group is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require an accommodation to participate in any part of the recruitment process, please contact us at careers@nexusegroup.com. Sponsorship & Work Authorization Nexus Engineering Group does not provide employment visa sponsorship of any kind, including CPT, OPT, or employment-based visas. Candidates must be currently authorized to work in the United States and must be able to maintain that authorization throughout employment without any action, filing, or sponsorship by the company. This requirement applies both at the time of hire and on a continuing basis for the duration of employment. Third‑Party Agency Notice Nexus Engineering Group does not accept unsolicited resumes or candidate submissions from external recruiters or agencies. We only engage approved third‑party partners under a written agreement initiated by our Talent Acquisition team for specific searches. Any resumes submitted without prior authorization or a current agreement will not be eligible for placement fees and will be considered the property of Nexus Engineering Group. We may use AI tools to help our recruitment team review and organize applications. These tools support — but never replace — human judgment, and final hiring decisions are made by people. If you’d like to know more about how your data is handled, contact us at careers@nexusegroup.com.