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Contractor information

What is a contractor?

Contractors are professionals or companies hired to perform specific tasks, projects, or services for clients, typically on a temporary basis and under a contractual agreement. Unlike regular employees, contractors are usually self-employed or work through an agency, manage their own taxes, and often provide their own equipment or tools. They may work in various industries such as construction, IT, or consulting, and are generally paid per project or by the hour. Contractors have more flexibility in choosing their work and schedules but do not receive employee benefits like health insurance or paid leave.

What are the key skills and qualifications needed to thrive as a contractor, and why are they important?

To thrive as a Contractor, you typically need expertise in construction methods, project management, budgeting, and relevant licensure or certifications. Familiarity with tools such as project management software, estimating programs, and compliance systems is often required. Strong leadership, problem-solving, and communication skills help manage teams and client relationships effectively. These abilities are crucial to ensuring projects are completed safely, on time, and within budget while meeting client expectations and regulatory standards.

What do contractors do?

A contractor is a person who works on a construction site and is responsible for overseeing important details of a project. This could mean managing vendors, communicating information to all the workers on the site, reviewing documents and architectural plans to make sure the building is going according to plan, and managing the tasks of other workers. Contractors have extensive knowledge of the construction project that they are working on, regardless of its size and scale.

How do contractors typically coordinate with clients and other professionals during a project?

Contractors often serve as the central point of communication between clients, subcontractors, architects, and suppliers throughout a project. They regularly hold meetings to discuss project progress, address challenges, and ensure that everyone is aligned with the project goals and timelines. Effective contractors use project management tools and clear communication channels to keep stakeholders informed and projects on track. This collaborative approach helps prevent misunderstandings and promotes a smooth workflow, which is essential for delivering successful outcomes.

What is the difference between Contractor vs Freelancer?

AspectContractorFreelancer
CredentialsMay require licenses or certifications depending on industryOften self-certified; specific credentials vary by field
Work EnvironmentTypically works on-site or at client locations, often under a contractUsually works remotely or from home, with flexible locations
Employer & Industry UsageHired by companies for specific projects or time periodsHired by clients for individual tasks or projects, across various industries
Search & Comparison IntentOften compared for project-based work, legal distinctionsCompared for flexible, independent work arrangements

In summary, Contractors are typically hired by companies for specific projects, often requiring industry-specific credentials and working on-site. Freelancers usually work independently, often remotely, offering services across multiple industries with flexible schedules. Both roles involve independent work but differ in work environment and contractual arrangements.

What type of jobs do contractors do?

Contractors perform a variety of jobs depending on their specialization, including construction, electrical work, plumbing, carpentry, and HVAC installation. They often work on projects requiring specific skills, tools, and certifications, and may operate independently or as part of a larger team on-site or in workshops.
More about Contractor jobs

What cities near Brooklyn, IA are hiring for Contractor jobs?

Cities near Brooklyn, IA with the most Contractor job openings:

Contractor jobs near you
Infographic showing various Contractor job openings in Brooklyn, IA as of August 2026, with employment types broken down into 1% Locum Tenens, 1% As Needed, 68% Full Time, 14% Part Time, and 16% Contract. Highlights an 86% Physical, 1% Hybrid, and 13% Remote job distribution.

Site Engineering Liaison / Field Engineer

Marshalltown, IA • On-site

System One
Business Consulting Services • 5 - 10K employees
Learn more about System Oneexternal

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 12 days ago

Job description

Job Title: Site Engineering Liaison / Field Engineer Location: Marshalltown Iowa Type: Contract Assignment Duration: 18–24 months (project-based) (Starting August 2026) Role Summary System One is recruiting for Site Engineering Liaison / Field Engineer will provide on-site technical support and oversight for the Owner on a 3x0 F-class simple cycle power generation project in Iowa. This position is a key member of the Owners’ Engineer (OE) team and will serve as the primary engineering interface between the jobsite and the home office engineering leads (mechanical, electrical, I&C, civil/structural, and project controls). The role focuses on construction-phase engineering support, field issue resolution, and quality/technical oversight of the EPC contractor and major equipment suppliers, ensuring that the facility is constructed in accordance with contract requirements, design documents, codes/standards, and the Owner’s expectations for safety, quality, cost, and schedule. Site Engineering Liaison / Field Engineer Responsibilities 1. OE Technical & Construction Support

  • Provide day-to-day on-site engineering support during construction and start-up for a 3x0 F-class simple cycle facility.
  • Review, interpret, and clarify IFC design drawings, data sheets, and vendor documents for field personnel and the Owner.
  • Support OE QA compliance reviews to verify that the EPC contractor’s work meets contractual, code, and industry best practices.
  • Identify potential design or constructability issues early and coordinate resolution with home office engineering leads.
2. Interface with Home Office Engineering
  • Act as the primary technical liaison between the site and the OE home office:
    • Communicate field conditions, nonconformances, RFIs, and changes that require engineering or owner input.
    • Coordinate timely responses to RFIs, NCRs, field change requests, and design deviations with home office discipline leads.
    • Provide feedback from the field to support design updates, and as?built documentation.
  • Participate in regular project coordination calls/meetings with the home office, providing concise updates on technical, quality, and constructability topics.
3. Contractor, OEM, and Stakeholder Coordination
  • Support the Owner and OE Project Manager in technical interactions with the EPC contractor, construction subcontractors, and major equipment OEMs (e.g., gas turbine, generator, balance of plant systems).
  • Attend and contribute to progress, coordination, and technical meetings at site, clearly representing OE/Owner technical interests.
  • Assist in the review and verification of contractor submittals, method statements, test procedures, and commissioning plans from a technical perspective.
4. Construction Monitoring & Quality Oversight
  • Provide on-site technical observation of construction and installation activities, focusing on compliance with design documents, manufacturer requirements, and applicable codes/standards.
  • Support OE and Owner quality surveillance activities; review inspection/test results, punchlists, and corrective actions from an engineering standpoint.
  • Help verify that mechanical, electrical, civil/structural, and I&C installations are suitable for safe and reliable operation.
5. Field Engineering, Issues, and Changes
  • Perform field engineering assessments to support problem solving and resolution of unexpected site conditions or design conflicts.
  • Work with home office leads to develop and document technically sound solutions to field issues (e.g., design clarifications, minor redesigns, field adjustments).
  • Support OE review of change orders and claims from a technical perspective, including scope, basis, and potential impacts.
6. Commissioning & Start-Up Support
  • Provide engineering support during system turnover
  • Assist in the review and evaluation of pre-functional checks, functional tests, performance tests, and reliability runs to confirm alignment with contract and design requirements.
  • Help track and resolve punchlist and start-up issues requiring engineering input.
7. Safety, Environmental, and Compliance
  • Promote and support site safety culture, working in alignment with Owner, EPC, and OE safety programs and procedures.
  • Help confirm that work complies with environmental, permitting, and regulatory requirements, escalating potential issues to the OE and Owner as appropriate.
Site Engineering Liaison / Field Engineer Required Qualifications
  • Gas turbine construction-phase experience on power generation
  • Strong working knowledge of power plant systems and construction practices
  • Demonstrated experience interfacing with contractors, OEMs, and multi-discipline engineering teams on complex projects.
  • Ability to read and interpret engineering drawings and specifications.
  • Proven capability to identify technical issues, evaluate options, and recommend practical, constructible solutions in a field environment.
  • Strong communication skills (verbal and written) to effectively engage with site personnel, Owner staff, and home office engineering teams.
  • Ability and willingness to work full-time at the project site in Iowa for the duration of the assignment (18–24 months), including participation in extended work hours when required by project needs.
Site Engineering Liaison / Field Engineer Preferred Qualifications
  • Bachelor’s degree in Engineering (mechanical or electrical)
  • Previous experience in an Owners’ Engineer, Owner’s representative, or independent engineer role on power generation projects.

System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M-1 #LI-JC1

Ref: #275-Eng Kansas City

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About System One

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System One helps employers get work done more efficiently and economically without compromising quality. Over our 35+ year history, we've helped connect thousands of talented people with innovative companies. The excitement of a perfect fit motivates us every single day.

Industry

Business consulting services and recruiting and staffing services

Company size

5,001 - 10,000 Employees

Headquarters location

Pittsburgh, PA, US

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