Senior Electrical & Instrumentation Designer - Primoris Engineering

Primoris Usa•Houston, TX

11d

About The Position

Primoris Engineering is hiring a Senior E&I Designer in Houston! Bring your expertise to a collaborative team where you’ll work on meaningful projects and shape innovative solutions. In this role you’ll take ownership of complex design initiatives, guiding projects from concept to completion. This role blends technical mastery with leadership - driving quality, ensuring compliance, and aligning every detail with project goals. You’ll mentor emerging talent, collaborate across disciplines, and serve as the go-to expert for design decisions that make an impact. The Senior Electrical and Instrumentation Designer is responsible for overseeing the design, development, and coordination of electrical and instrumentation systems across multiple projects. This role combines technical expertise with leadership, ensuring high-quality deliverables, compliance with industry standards, and alignment with project objectives. The senior designer will mentor junior staff, coordinate with cross-functional teams, and serve as the primary point of contact for design-related decisions.

Requirements

10+ years of experience in electrical and instrumentation design.
Proficiency in CAD software and design tools (AutoCAD, CADWorx, Elecdes Design Suite).
Strong knowledge of industry codes and standards (NEC, IEC, ISA, IEEE).
Excellent communication, leadership, and organizational skills.

Nice To Haves

Experience in EPC projects, industrial facilities, or oil & gas/petrochemical sectors is highly desirable.

Responsibilities

Lead the preparation of electrical and instrumentation design packages including drawings, schematics, wiring diagrams, and layouts.
Ensure designs meet project specifications, codes, and standards (NEC, IEC, ISA, IEEE, etc.).
Review and approve design documents prepared by team members.
Coordinate with project managers, engineers, and other disciplines to ensure seamless integration of E&I systems.
Manage design schedules, deliverables, and resource allocation.
Support procurement by preparing material take-offs, specifications, and vendor data reviews.
Develop and maintain instrument indexes, cable schedules, and loop diagrams.
Provide guidance on control systems architecture, PLC/DCS interfaces, and field instrumentation selection.
Ensure proper grounding, lighting, and power distribution design for facilities.
Mentor and train junior designers and drafters, fostering technical growth and accountability.
Promote best practices in CAD tools.
Drive continuous improvement in design workflows and standards.
Participate in design reviews and implement corrective actions.
Ensure compliance with safety standards, client requirements, and regulatory guidelines.
Support construction and commissioning teams with design clarifications and field changes.