Sr. Instrumentation Designer (19709)

Arion; Houston (TX); On-site; USD 95,000 - 135,000; Full time

Job summary

Arion is seeking an experienced Instrument & Controls (I&C) Designer in Houston to develop and execute MOC design packages for operating oil & gas facilities. You will manage multiple projects, balance shifting priorities, and ensure quality, safety and schedule commitments while reporting to the Instrumentation Department Manager.

The role requires strong organization, adaptability, and the ability to collaborate with operations, maintenance, engineering, construction, and client

Qualifications

• 10+ years of applicable design experience.
• Degree in Drafting Technology or related field.
• Knowledge of API RP 14C is preferred.
• Proficient with control system modifications and wiring.
• Understanding of fusible loop systems.
• Ability to determine the instrument design scope from redline P&IDs.
• Ability to discuss instrument scope in client meetings.
• Ability to organize and schedule competing priorities.

Responsibilities

• Lead design concepts for the project.
• Develop Instrument and Controls design deliverables for brownfield modifications and MOC projects.
• Prepare and review instrument construction work packs and drawings.
• Perform field verification and site walkdowns to validate conditions.
• Coordinate with ops, maintenance, engineering, construction and client reps.
• Manage multiple MOC packages concurrently and balance priorities.
• Support all phases of project development from scope to as-built docs.
• Ensure designs comply with industry standards and client specs.
• Participate in design reviews, hazard assessments, and MOC approvals.
• Resolve design issues and incorporate client-driven changes without major schedule impact.
• Review vendor documents and equipment packages.
• Distribute information with Instrument team and other disciplines.
• Verify designs across all deliverables.
• Manage instrumentation scope changes.
• Prepare material total installed cost estimates.
• Approve instrument design deliverables for the project.
• Mentor younger engineers and designers.

Skills

Interpersonal skills

Communication

Prioritization

Client meetings

Education

Drafting Technology degree

Tools

SPI

Aveva E3D

AutoCAD

NavisWorks

MS Office

Job description

Job Summary

The Instrument & Controls (I&C) Designer is responsible for developing and executing Management of Change (MOC) design packages for operating oil & gas facilities. This role supports multiple projects simultaneously in a fast-paced environment where priorities frequently shift based on client needs, operational constraints, and project schedules. The successful candidate must be highly organized, adaptable, and capable of managing competing demands while maintaining quality, safety, and schedule commitments. The position reports to the Instrumentation Department Manager.

Job Summary

The Instrument & Controls (I&C) Designer is responsible for developing and executing Management of Change (MOC) design packages for operating oil & gas facilities. This role supports multiple projects simultaneously in a fast-paced environment where priorities frequently shift based on client needs, operational constraints, and project schedules. The successful candidate must be highly organized, adaptable, and capable of managing competing demands while maintaining quality, safety, and schedule commitments. The position reports to the Instrumentation Department Manager.

Responsibilities

• Serve as the overall lead for design concepts on the project.
• Develop Instrument and Controls design deliverables for brownfield facility modifications and MOC projects.
• Prepare and revise engineering drawings, including loop drawings, wiring diagrams, control system architecture drawings, panel layouts, cable schedules, tube schedules, and installation details.
• Prepare and review Instrument construction work packs.
• Perform field verification and site walkdowns to validate existing conditions and identify potential design conflicts.
• Coordinate closely with operations, maintenance, engineering, construction, and client representatives to support project execution.
• Manage multiple active MOC packages concurrently while balancing competing priorities and schedule demands.
• Support all phases of project development, including scope definition, estimating, detailed design, construction support, and as-built documentation.
• Ensure designs comply with applicable industry standards, client specifications, facility procedures, and regulatory requirements.
• Participate in design reviews, constructability reviews, hazard assessments, and MOC approval processes.
• Resolve design issues and incorporate client-driven changes throughout project execution with minimal impact to schedule and budget.
• Review vendor documents to ensure specifications and project requirements are met.
• Review mechanical equipment packages.
• Gather and distribute information with the Instrument team and other project disciplines.
• Perform verification of designs throughout all design deliverables.
• Manage instrumentation scope changes.
• Prepare material total installed cost estimates.
• Approve instrument design deliverables for the project.
• Mentor and support younger engineers and designers.
• Performs related duties, as needed.

Qualifications

Qualifications / Education Requirements

• 10+ years of applicable design experience.
• Associate’s or bachelor’s degree in Drafting Technology or related field.
• Knowledge of API RP 14C is preferred.
• Proficient with control system modifications and wiring.
• Possess an understanding of fusible loop systems.
• Ability to determine the entirety of the instrument design scope based off redline P&IDs.
• Ability to speak intelligently about instrument scope in client meetings.
• Ability to organize and schedule competing priorities.
• Possess good interpersonal skills and excellent verbal/written communication skills.

Software

• Experience and proficiency with SPI, Aveva E3D, and AutoCAD.
• Microsoft Teams and Navis-Works.
• Advanced Microsoft Office skills (Word, Excel, PowerPoint) preferred.

Working Conditions

• Work is primarily conducted in an office environment but travel to project site locations for short-term field visits should be expected, as required, for project needs.
• Field duties may require outdoor work in a plant or facility.
• When on field assignment you may be required to work in a plant and/or shop areas around production machinery subject to varying temperatures and noise.
• May be at more than one job site in a day and must be able to tolerate climate changes.
• May be required to travel out of town on a periodic basis.

Physical Requirements (With or Without Reasonable Accommodation)

• Ability to lift and carry up to ten (10) pounds.
• Ability to communicate effectively, including sufficient clarity of speech, hearing, or other communication capabilities.
• Ability to sit for extended periods of time.
• Sufficient visual acuity or other observational abilities to review documents, perform analysis, and conduct investigations.
• Sufficient manual dexterity to perform routine office tasks such as typing and using standard office equipment.
• Sufficient mobility to perform office duties and travel to off-site locations as needed.
• Ability to wear required personal protective equipment (PPE) when visiting operational or field locations, as required by the safety department.