Senior Electrical & Instrumentation Designer - Primoris Engineering

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.

Key Responsibilities

• Design
• 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.
• Project Execution
• 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.
• Technical Expertise
• 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.
• Team Development
• 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.
• Quality & Compliance

• 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.

Qualifications

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

Competencies

• Strategic leadership and team management.
• Advanced technical design and problem-solving.
• Strong attention to detail and quality assurance.
• Ability to manage multiple priorities under tight deadlines.
• Collaborative mindset with cross-functional teams.

Benefits:

• Competitive compensation paid weekly
• Best-in-class; Medical, Dental, Vision, and LTD/STD
• 401(k) with company match, vested day-one
• Employee Stock Purchase Plan [ESPP]
• Tuition Reimbursement
• Paid Time Off, Holiday Pay, and Community Service Paid Time Off
• Pet Coverage "For our Furry Friends"
• Legal Assistance Coverage
• Award winning safety programs

Company Overview:

Primoris was formed in 2004 as the parent company and is traded on the NYSE under the symbol PRIM. We provide a wide range of construction, maintenance, and engineering services for power generation, oil and gas, chemical, pipeline, utilities and distribution, and civil infrastructure clients. Primoris is ranked in the top 1% of the prestigious Top 600 Specialty Contractors List by Engineering News-Record (ENR), having built projects throughout the U.S. and Canada. For additional information, please visit www.prim.com.

Primoris Engineering provides complete professional and technical engineering services, including feasibility studies, process design packages, front-end engineering designs, economic analysis, detailed engineering, survey, and construction and commissioning services for projects in the Refining, Renewables, Chemicals, and Mid-Stream markets. We are experts in the process heater marketplace and designing and supplying reformers, heaters, Selective Catalytic Reductions (SCR), and waste-heat recovery units around the world. Engineering offices are located in Houston, TX and Calgary, Alberta, Canada.

Agency Statement:

We are not accepting resumes from Third Party Recruiting Firms for this position. If you are an Agency or Search firm representative, contact the Primoris Talent Acquisition Manager directly for consideration. Primoris or its subsidiaries will not be responsible for any fees arising from the use of resumes and online response forms through this source. In addition, Primoris or its subsidiaries will not be responsible for any fees on unsolicited resumes that are submitted to any member of the Staffing or Operations team. Primoris has established an approved vendor program for this service and will only consider accepting submissions from those approved firms. For consideration in becoming an approved vendor, contact HR.

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