25 Results for

Intern Jobs in Holiday, CA

Jobs

Concord, CA30+ days ago

$25–$34.11 Per Hour

This internship provides hands-on experience working alongside licensed engineers and project teams on real-world projects while developing technical, analytical, and professional skills. Compensation depends on several factors including: experience, education, key skills, geographic location of the position, client requirements, external market competitiveness, and internal equity among other employees within APTIM.

Concord, CA30+ days ago

Our Electrical services include: Electrical System Master Planning & Studies Power System Design, Protection & Generation, Power System Analysis, Facility System Design, Sustainability/Renewable Energy In this role you would perform a variety of tasks including: Developing drawings for electrical systems (power, controls, communications, fire alarm, and security) using CADD. We provide career opportunities that span a variety of disciplines and geographic locations, with projects that our employees plan, design, build and operate as diverse as the needs of our clients.

Martinez, CA30+ days ago

Past projects/duties include: analyze refinery process flow data and compare to recommended optimum levels, this will help in identifying equipment failures which cause variances in capacity from the optimum levels; update information on gasoline blends and tank samples in preparation for an annual blender waiver audit; develop applications to better present process data for refinery operating decisions. Past projects/duties include: perform process calculations for the Risk Management Plan, including taking physical surveys of refinery process units; work on various process engineering projects within a Wastewater Treatment Plant; participate in inspections and/or testing that is conducted by federal, state, or local officials.

Hercules, California30+ days ago

The intern will work closely with cross-functional stakeholders and gain experience in data analysis, business problem-solving, executive communication, and project delivery within a dynamic, collaborative environment. Actual compensation will be provided in writing at the time of offer, if applicable, and is based on several factors we believe fairly and accurately impact compensation, including geographic location, experience, knowledge, skills, abilities, and other job permitted factors.

Martinez, CA14 days ago

$24–$28 Per Hour

Incorporating industry-leading preconstruction services and safety practices, the Company’s multi-disciplined team of engineering and construction professionals delivers a wide range of projects, including new facilities, infrastructure improvement and expansion, and capital construction services. MWH Constructors, a global leader in heavy civil construction of water and wastewater facilities, is currently seeking a construction-focused field engineer intern to join our CMS Project based out of Martinez, CA.

Rodeo, CA30+ days ago

$2,894–$3,308 Per Week

The Rodeo Renewable Energy Complex is a state-of-the-art facility processing renewable feedstocks (waste oils, fats, greases, and vegetable oils) to produce vital transportation fuels, including renewable diesel and sustainable aviation fuels for California, Oregon, Washington, and British Columbia. Through its refining business segment, Phillips 66 is upgrading crude oil and other feedstocks into higher-value petroleum products including clean-burning gasoline, ultra-low-sulfur diesel, jet fuel, lubricants, petroleum coke and other specialty products while maintaining a high regard for safety and environmental limitations.

Martinez, CA30+ days ago

Typical college co-op assignments include the following: troubleshooting system power supply problems, control system programming, hardware and software lifecycle replacement projects, installing and troubleshooting communication networks and monitoring control system performance metrics. The majority of Electrical Engineering co-ops and interns enter into the following positions: Electrical & Instrumentation (E&I) Project Engineers work on a variety of real-world electrical and instrumentation projects in a refinery setting.

Martinez, CA30+ days ago

With the potential to have multiple sessions and opportunities, you will gain valuable real-world experience while enhancing your skill set in the following position: As an MPC VCO intern you will play a role in optimizing business processes through data-driven insights and algorithmic solutions. MPC also owns the general partner and majority limited partner interest in MPLX LP, a midstream company that owns and operates gathering, processing, and fractionation assets, as well as crude oil and light product transportation and logistics infrastructure.

Concord, CA30+ days ago

Full-time

Please be advised that housing or relocation assistance is not provided for intern positions within our San Diego, Santa Ana, Los Angeles, New York or Hawai'i divisions. MINIMUM SKILLS OR EXPERIENCE REQUIREMENT: • Engineering, Construction Management, or Architectural degree completed or in progress, or equivalent experience.

New!

Santa Rosa, California2 days ago

$27.93–$30.08 Per Hour
Intern

Our ~15,000 employees create world-class solutions in communications, 5G, automotive, energy, quantum, aerospace, defense, and semiconductor markets for customers in over 100 countries. Overview: Keysight is at the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization.

Hercules, California30+ days ago

Kaizen preparation: Baseline Data collection and analysis, understanding MRP (impact of planning/buying, impact of key master data (safety stock, lead time, lot size, etc), and how these factors impact inventory dollars, inventory turns and product expiry. Work Experience: Previous summer internships or work experience in laboratories, manufacturing environments working with electromechanical, chemical and/or mechanical devices.

Hercules, California16 days ago

This internship is a great fit for students who enjoy working with quality documents such as SOPs, Policies, architectural drawings, staying organized, and learning how real-world projects are documented, archived, and managed in a professional environment. You’ll gain hands-on experience working with global policies and procedures, architectural drawings, digital file systems, and record documentation, while contributing to a meaningful project that will live beyond the internship and can be included in your academic or professional portfolio.

Hercules, California30+ days ago

Build Analytical Dashboards: Collaborate with IT, Global Supply Chain (GSC) Analytics, and stakeholders to develop a visualization tool that identifies vendor-to-product mapping and material commonality. Actual compensation will be provided in writing at the time of offer, if applicable, and is based on several factors we believe fairly and accurately impact compensation, including geographic location, experience, knowledge, skills, abilities, and other job permitted factors.

Martinez, CA30+ days ago

$90,700–$136,100 Per Year

Duties may include the following: analyze refinery process flow data and compare to recommended optimum levels, this will help in identifying equipment failures which cause variances in capacity from the optimum levels; update information on gasoline blends and tank samples in preparation for an annual blender waiver audit; develop applications to better present process data for refinery operating decisions. Duties may include the following: perform process calculations for the Risk Management Plan, including taking physical surveys of refinery process units; work on various process engineering projects within a Wastewater Treatment Plant; participate in inspections and/or testing that is conducted by federal, state, or local officials.

Vallejo, California30+ days ago

$17–$20 Per Hour

3 months previous experience in animal care and training and/or completed college level courses in a related science preferred. Interns are responsible for the general care and maintenance of all marine mammals in assigned areas.

Vallejo, California30+ days ago

Perform housekeeping duties, including guest areas of Shark Experience and Sting Ray Bay. Must possess the mental and physical capacities necessary to perform primary responsibilities and pass an annual physical exam and stress test.

Novato, CA30+ days ago

Temporary

As a Camp Counselor, you will be an active participant in all camp activities and will assist your Camp Director with a variety of daily tasks, all with the goal of creating a memorable and meaningful camp experience for your campers. We partner with over 230 private clubs all over the country to implement traditional-style day camps for elementary-aged children.

Martinez, CA30+ days ago

$90,700–$136,100 Per Year

Area Refining Engineer/Project Engineer: Refining/Project engineers are involved in the technical development and project management of all types of refinery projects, organizing and coordinating projects within a multi-discipline team from conception through construction and startup. MPC also owns the general partner and majority limited partner interest in MPLX LP, a midstream company that owns and operates gathering, processing, and fractionation assets, as well as crude oil and light product transportation and logistics infrastructure.

Hercules, California30+ days ago

Key Responsibilities: Partner with HR leaders and subject-matter experts to understand current workflows, pain points, and success measures (e.g., Talent Acquisition, HR Operations, HR Technology/HRIS, Learning, Analytics, Compliance). Research and benchmark AI use cases relevant to HR (e.g., knowledge assistants for policies, workflow nudges, recruiting/onboarding automation, survey insights, HR analytics) and summarize findings in clear, non-technical language.

Freestone, CA16 days ago

Must be able to lift at least 50 pounds, pull 100 pounds at least 20 feet, stand for prolonged periods of time, climb ladders, stairs, and catwalks, stoop, bend, lift overhead and kneel. We are seeking harvest interns to assist our small production team in all facets of winemaking at our Sonoma Coast facility in Freestone, California, from August to October of 2026.

SANTA ROSA, California30+ days ago

The jobs listed are examples of the typical kinds of positions that Costco may hire for when openings exist. Under the supervision of a registered pharmacist, dispenses prescription medications in a high-volume pharmacy.

New!

Hercules, California2 days ago

This position partners closely subject matter experts across multiple manufacturing workflows, as well as Master Data Governance/CoE, Operations Excellence as an integral contributor and project coordinator to optimize, define, and document tactical execution requirments, roles, responsibilities, and escalation paths for master data custodians. Reporting to site Materials Manager, the SAP Master Data Project Coordinator will be play a critical role in ensuring accuracy, consistency, and readiness of master data for new product introductions.

Santa Rosa, California30+ days ago

$31.33–$33.74 Per Hour
Intern

The primary focus of this position is on software applications, guiding users to leverage internal resources such as Microsoft Office 365 Cloud, Success Factors, Comaround (Knowledge Management), and Concur. In the role of support technician, you will assist Keysight employees in transitioning to evolving productivity platforms by delivering hands-on training and troubleshooting a range of devices, including iPhones and laptops.

Santa Rosa, California8 days ago

$22.26–$23.98 Per Hour
Intern

Responsibilities: A Small Business Liaison Officer (SBLO) acts as the primary point of contact between an organization and small businesses, ensuring compliance with government subcontracting regulations, identifying qualified diverse suppliers, and facilitating partnerships. Internal Advocacy & Training: Train internal teams (buyers, procurement) on small business policies and mentor staff on utilizing diverse suppliers.

American Canyon, CA30+ days ago

The Continuous Improvement / Industrial Engineering Intern will develop hands-on experience in manufacturing performance analysis and process optimization by learning and applying Industrial Engineering methods focused on time study, cycle time, takt time, and line balancing. Throughout the duration of this 16 week program, the Intern will support Mezzetta's effort to improve packaging line performance, reduce bottlenecks, and identify opportunities for efficiency and labor optimization.

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Intern Jobs in Holiday, CA

Jobs

Civil Engineering InternAPTIM

Electrical Engineering Intern (Summer 2026!)CDM Smith

Refining Chemical Engineering Intern/Co-op Summer 2026Marathon Petroleum Corporation

Graduate Student Finance InternBio-Rad Laboratories, Inc.

Field Engineer InternMWH

2026 University Intern - Rodeo Refining EngineerPhillips 66

Intern/Co-op - Refining Electrical Engineering - Spring 2026Marathon Petroleum Corporation

Intern/Co-op - Value Chain Organization (VCO) (Summer 2026)Marathon Petroleum Corporation

Project Engineer InternSwinerton Builders

Engineering InternKeysight Technologies, Inc.

Lean/Continuous Improvement InternBio-Rad Laboratories, Inc.

Document Control Specialist InternBio-Rad Laboratories, Inc.

Procurement InternBio-Rad Laboratories, Inc.

Refining Engineer 1 - Chemical Engineer - Intern to Full-Time ConversionMarathon Petroleum Corporation

SFDK Marine Mammal Intern $17-$20/HRSix Flags Entertainment Corporation

SFDK Aquarist Intern $19.00/HRSix Flags Entertainment Corporation

Summer Day Camp Counselor-InternKE Camps

Refining Engineer 1 - Mechanical Engineer - Intern to Full-Time ConversionMarathon Petroleum Corporation

AI Implementation Planning InternBio-Rad Laboratories, Inc.

Harvest Cellar Intern - Sonoma CoastJoseph Phelps

RX Grad InternCostco Wholesale Corporation

Project Coordinator InternBio-Rad Laboratories, Inc.

IT Engineer InternKeysight Technologies, Inc.

Supply Chain Associate- InternKeysight Technologies, Inc.

Continuous Improvement / Industrial Engineering InternshipMezzetta

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