Lead Designer

Marathon Petroleum; Carson (CA); On-site; USD 110,000 - 165,000; Full time

Benefits offered by this job

Relocation not available

Job summary

Marathon Petroleum Company LP (MPC) Los Angeles Refinery has an opening for a Lead Designer (E/I) in Carson/Wilmington, California. The Lead Designer (E/I) develops cost-effective project designs, selecting routing that considers construction practices, regulatory factors, ergonomics, material limits and safety.

Onsite work is required with 9/80 or 5/40 schedules; core business hours 7:00 AM - 3 PM. Travel 5% or less. Preferred SmartPlant Instrumentation (SPI) experience.

Qualifications

• Must have a high school diploma or GED. (Education must be obtained/completed prior to start date.)
• Must have at least 8 years of design experience supporting an Engineering department with at least 4 of those years of experience focused on Electrical and Instrumentation in a refinery, petro-chemical or other related industry.
• Must be proficient in Microsoft 365: Word, Excel and Outlook.
• Must be proficient with AutoCAD and Raster Design.
• Must be able to wear PPE, perform tasks in the field and pass hair drug test and physical.
• Must have a valid driver's license.
• Must be legally authorized to work in the US without visa sponsorship.
• Travel Requirement 5% or less.
• Must be able to work onsite on 9/80 or 5/40 schedule; after hours and TAR support.

Responsibilities

• Develops cost-effective project designs and routing in line with project needs.
• Creates bid/construction packages using CAD software and discipline standards.
• Develops detailed bills of materials to support cost estimates.
• Acquires data for design via field visits, site reviews and historical drawings.
• Performs field verification of instrument termination points and electrical spares.
• Manages multiple programs and projects ensuring schedules and milestones are met.
• Develops instrumentation installation details and construction drawings using AutoCAD, Raster Design, SPI.
• Prepares complete instrumentation construction packages from concept to IFC and As-Built.

Skills

Microsoft 365

Field measurements

Education

High School Diploma or GED

Tools

AutoCAD

Raster Design

SmartPlant Instrumentation (SPI)

Microsoft 365 (Word/Excel/Outlook)

Job description

An exciting career awaits you

At MPC, we're committed to being a great place to work - one that welcomes new ideas, encourages diverse perspectives, develops our people, and fosters a collaborative team environment.

Lead Designer - Electrical and Instrumentation (E/I)

Job Summary

Marathon Petroleum Company LP (MPC) Los Angeles Refinery has an opening for a Lead Designer (E/I) in Carson/Wilmington, California. The Lead Designer (E/I) is responsible for d eveloping cost-effective project designs by understanding project needs and then recommending best discipline specific routing which incorporates factors such as construction practices, regulatory factors, ergonomics, materials limitations and safety.

Must be able to work onsite for one of the available schedules for the position which are either 9/80 or 5/40 , must be able to work after hours as needed and support TAR once year. Core Business hours are: 7:00 AM - 3 PM.

Key Responsibilities

• Develops cost-effective project designs by understanding project needs and then recommending best discipline specific routing which incorporates factors such as construction practices, regulatory factors, ergonomics, materials limitations and safety.
• Creates concise and coherent bid / construction packages by applying knowledge of industry and computer-aided design (CAD) software along with other designing / drafting equipment per their discipline (SI, Plant 3D, etc.).
• Develops detailed bills of materials utilizing current company standards and industry best practices in order to help with creation of cost estimates.
• Acquires data and information needed for a successful design by communicating with internal and external contacts, visiting project/field sites, utilizing point cloud data as needed and reviewing historical drawings.
• Performs all necessary field visits including coordination with craftsmen to assist with verifying instrument termination points or verifying electrical spares per drawings as well as obtaining precise measurements and verifying dimensions and routings.
• Manages multiple programs, projects and assignments in a timely, safe and cost-effective manner. Ensures that project schedules and milestones are achieved and develops strategies for fast tracking areas of concern.
• Manages multiple programs, projects and assignments in a timely, safe and cost-effective manner. Ensures that project schedules and milestones are achieved and develops strategies for fast tracking areas of concern.
• Develops and modifies instrumentation installation, wiring, termination and construction drawings utilizing AutoCAD, Raster Design and SmartPlant Instrumentation (SPI) to produce accurate engineering and construction documentation.
• Identifies and develops instrument cable routing, termination, marshalling and DCS I/O connections from field instrumentation to the designated control system point in accordance with refinery standards.
• Develops instrumentation installation details, support details, mounting arrangements and material requirements to ensure safe, constructible and maintainable field installations.
• Prepares complete instrumentation construction packages from initial concept through Issued for Construction (IFC) and final As-Built documentation, incorporating design reviews, construction revisions and field redlines.

Education, Experience and Skills

Minimum Qualifications

• Must have a high school diploma or GED. (Education must be obtained/completed prior to start date.)
• Must have at least 8 years of design experience supporting an Engineering department with at least 4 of those years of experience focused on Electrical and Instrumentation in a refinery, petro-chemical or other related industry.
• Must be proficient in Microsoft 365: Word, Excel and Outlook.
• Must be proficient with AutoCAD and Raster Design .
• Must be able to wear appropriate PPE, be able to physically perform all tasks in the field and take hair drug test and physical.
• Must have a valid driver's license.
• Must be legally authorized to work in the US without the need for future VISA sponsorship.
• Travel Requirement is 5% or less.
• Must be able to work onsite for one of the available schedules for the position which are either 9/80 or 5/40 , must be able to work after hours as needed and support TAR once year. Core Business hours are: 7:00 AM - 3 PM.

Preferred Qualifications

• SmartPlant Instrumentation (SI) is preferred.

This job will posted through Friday, Aug 28, 2026.

Relocation Information

Relocation is not available.

Benefits Information

Learn more about Marathon Petroleum's benefits at https://mympcbenefits.com/

This position belongs to a family of jobs with increasing responsibility, competency and skill level. Actual position title and pay grade will be based on the selected candidate's experience and qualifications.

As an energy industry leader, our career opportunities fuel personal and professional growth.

Location

Carson, California

Job Requisition ID

00023457