Senior Instrumentation Engineer

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 projects

P&IDs in regard to instrument and control philosophy

Maintain instrument index and I/O lists for DCS, PLC, and SIS systems

Develop instrument datasheets (flow, level, pressure, temperature, analyzers) and complete instrument sizing and calibration drawings

Specify and apply measurement technologies based on process conditions and installation requirements, i.e. DP flow, Coriolis, ultrasonic, radar, GWR, etc.

Valve specifications and sizing (control valves, regulators, on/off valves)

Perform loop design, control wiring and loop drawing development

Develop wiring infrastructure and interconnects for junction boxes, local control panels, marshalling panels, and control system

Define installation details, i.e. Hook-ups, tubing layouts, impulse lines, thermowells

Instrument location plans and cable and conduit routing plans

Read motor schematics and develop control system interface with starters and VFDs

Review of vendor drawing submittals

Technical evaluation of bids

Assistance in field work

Support of construction and startup/commissioning activities

Control Systems Engineering (Secondary)

Support control system architecture design

Develop:

Control narratives and functional descriptions

Cause & Effect matrices

Interface with control system vendors and system integrators

Review logic diagrams, interlocks, and shutdown systems

Participate in FAT/SAT and commissioning activities

Project Execution

Execute work across:

FEED studies, FEL 1/2/3, Execute

Detailed engineering

Minimal Construction support

Coordinate with: Process, mechanical, electrical, and piping disciplines

Review P&IDs and ensure instrumentation alignment

Provide technical input for procurement packages and vendor evaluations

Provide MTOs to estimating department.

Manage deliverables, budgets, schedules, and technical quality

Leadership & Technical Authority

Discipline lead on assigned projects

Mentor junior and mid-level engineers

Act as technical checker for construction package and calculations

Drive standardization and best practices across projects

Interface directly with clients and stakeholders

Provide technical troubleshooting and problem-solving support

Qualifications

• 8+ Years of Engineering Experience
• Demonstrated experience in: Oil & Gas, Petrochemical / Refining, Chemical or heavy industrial facilities
• Working knowledge of Microsoft Office products
• Project lead experience developing engineering schedules, budgets and forecasts
• Excellent verbal and written communication skills
• Ability to work effectively in teams and to present a positive image to clients
• Working knowledge of AutoCAD and 3-D CAD a plus
• Engineering design tools and calculations
• Knowledge of Industry Standards (ISA, PSM, etc.)

Education/Certification Requirements

• BS Degree in Chemical or Electrical Engineering or Mechanical Engineering
• Advanced degree, and/or P.E. certification a plus
• SIS certification a plus
• Active 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 [email protected]. 

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.