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Energy Systems Engineering Jobs in Seattle, WA (NOW HIRING)

System One

System Design Engineer

Bellevue, WA · Remote

$102K - $140K/yr

... engineering experience. * Strong knowledge of thermodynamics, fluid systems, heat transfer, and mechanical/process system design. * Experience developing and maintaining mass and energy balance ...

System One

System Design Engineer

Bellevue, WA · Remote

$102K - $140K/yr

... engineering experience. * Strong knowledge of thermodynamics, fluid systems, heat transfer, and mechanical/process system design. * Experience developing and maintaining mass and energy balance ...

Helion Energy

Electrical Systems Engineer

Everett, WA · On-site

$165K - $200K/yr

Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As an Electrical Systems Engineer, you will help define the electrical hardware that powers and ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Kent, WA · On-site

$40 - $90/hr

Responsible for end-to-end testing, programming, start-ups, and commissioning. * Schedule and ... energy infrastructure, we offer employees a competitive salary and benefits package and we are ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Kent, WA · On-site

$55.24 - $76.43/hr

... as well as engineering applications and automated control systems. * Install new HVAC units ... energy infrastructure, we offer employees a competitive salary and benefits package and we are ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Kent, WA · On-site

$85K - $110K/yr

... energy solutions. Our integrated, single-source solutions include turnkey in-house capabilities ... engineering applications and automated control systems. Sales Talent Acquisition Partner is ...

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All JobsEnergy Systems Engineering JobsEnergy Systems Engineering Jobs in Seattle, WA

Energy Systems Engineering information

See Seattle, WA salary details

$68.8K

$161.7K

$223K

How much do energy systems engineering jobs pay per year?

As of Aug 10, 2026, the average yearly pay for energy systems engineering in Seattle, WA is $161,677.00, according to ZipRecruiter salary data. Most workers in this role earn between $129,700.00 and $196,900.00 per year, depending on experience, location, and employer.

What does an energy systems engineer do?

An energy systems engineer designs, analyzes, and optimizes energy systems to improve efficiency and sustainability. They work with power generation, distribution, and renewable energy technologies, often using modeling tools and requiring knowledge of engineering principles and environmental considerations.

What are the key skills and qualifications needed to thrive as an energy systems engineer?

To thrive as an Energy Systems Engineer, you need a solid background in electrical or mechanical engineering, renewable energy technologies, and energy management principles, typically supported by a relevant degree. Familiarity with simulation software such as MATLAB, HOMER, or ETAP, as well as certifications like Certified Energy Manager (CEM), are commonly required. Strong analytical thinking, problem-solving abilities, and effective communication skills are key soft skills for this role. These competencies are crucial for designing, optimizing, and implementing efficient energy systems that meet industry standards and sustainability goals.

What is an energy systems engineer?

An Energy Systems Engineering job involves designing, analyzing, and optimizing energy systems to improve efficiency, sustainability, and reliability. Engineers in this field work with renewable and conventional energy sources, energy storage, and grid integration. They may be involved in energy policy, system modeling, and implementing new technologies. Their goal is to create cost-effective and environmentally friendly energy solutions for industries, utilities, and communities.

What are the typical career advancement opportunities for an energy systems engineer?

Energy Systems Engineers can pursue a variety of career paths, progressing into roles such as senior engineer, project manager, systems architect, or consultant as they gain experience and expertise. Many professionals in this field also specialize further in areas like renewable energy integration, smart grid technologies, or energy policy. Advancement often comes with taking on more complex projects, managing multidisciplinary teams, and obtaining advanced certifications. Organizations frequently support ongoing professional development, allowing engineers to expand their technical and leadership skills. This field offers dynamic growth as demand for sustainable energy solutions continues to rise.

What can I do with a degree in energy systems engineering?

A degree in energy systems engineering prepares individuals for roles such as energy analyst, renewable energy engineer, power systems engineer, or energy project manager. These positions involve designing, analyzing, and optimizing energy systems, often requiring knowledge of electrical systems, thermodynamics, and industry standards. Graduates may work in utilities, consulting firms, government agencies, or renewable energy companies, often utilizing tools like simulation software and pursuing certifications such as PE or LEED.
What are the most commonly searched types of Energy Systems Engineering jobs in Seattle, WA? The most popular types of Energy Systems Engineering jobs in Seattle, WA are:
What are popular job titles related to Energy Systems Engineering jobs in Seattle, WA? For Energy Systems Engineering jobs in Seattle, WA, the most frequently searched job titles are:
What job categories do people searching Energy Systems Engineering jobs in Seattle, WA look for? The top searched job categories for Energy Systems Engineering jobs in Seattle, WA are:
Energy Systems Engineering jobs near you
Infographic showing various Energy Systems Engineering job openings in Seattle, WA as of July 2026, with employment types broken down into 90% Full Time, 6% Part Time, and 4% Contract. Highlights an 81% In-person, and 19% Remote job distribution, with an average salary of $161,679 per year, or $77.7 per hour.

System Design Engineer

System One

Bellevue, WA • Remote

$102K - $140K/yr

Contractor

Re-posted 24 days ago

Job description

System Design Engineer

Location: Bellevue, WA Job Type: Contract Work Model: Remote Schedule: 40 hours/week

System One is seeking an experienced System Design Engineer to support the development of advanced nuclear energy systems. This role is responsible for the design and integration of complex process and plant systems from conceptual design through final implementation. The ideal candidate has a strong background in thermal-fluid systems, process engineering, and multidisciplinary system integration.

Responsibilities

  • Design nuclear and industrial process systems and subsystems from concept through final design.
  • Develop and maintain mass and energy balance models to support system performance and design analyses.
  • Integrate results from thermal, structural, seismic, pipe stress, and heat transfer analyses into overall system designs.
  • Apply applicable industry codes and standards, including ASME, ANS, ASTM, IEEE, and NFPA.
  • Develop engineering documentation, including:
    • System Design Descriptions (SDDs)
    • Engineering Design Specifications (EDS)
    • Interface Control Documents (ICDs)
  • Support the development of design packages, including P&IDs, 3D models, and system drawings.
  • Coordinate closely with mechanical, civil, instrumentation & controls (I&C), nuclear, and other engineering disciplines.
  • Provide technical oversight of suppliers and support engineering design reviews.
  • Support system testing, validation, qualification, and commissioning activities.

Required Qualifications

  • Bachelor's degree in Chemical Engineering, Nuclear Engineering, or a related engineering discipline.
  • 10+ years of system design and engineering experience.
  • Strong knowledge of thermodynamics, fluid systems, heat transfer, and mechanical/process system design.
  • Experience developing and maintaining mass and energy balance models using Aspen HYSYS and/or Aspen Plus.
  • Experience reading, interpreting, and developing Piping & Instrumentation Diagrams (P&IDs).
  • Demonstrated experience integrating complex engineering systems across multiple technical disciplines.
  • Strong analytical, problem-solving, organizational, and communication skills.

Preferred Qualifications

  • Experience supporting advanced reactor or commercial nuclear power projects.
  • Familiarity with engineering design processes in highly regulated industries.
  • Experience supporting supplier management and multidisciplinary design reviews.
  • Working knowledge of configuration management and systems engineering principles.