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Salary
≈ $36k – $82k per year (Estimated)
Location
In office (Phoenix)

Confirmed on the employer's own hiring board on Oct 29, 2026. First seen by Alion on Oct 16, 2026. United Integrated Services scores A on the Alion truth index.

Overview
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Profile match
United Integrated Services (UIS) is an engineering and construction company headquartered in Taipei, Taiwan, that builds facilities for the semiconductor industry, including cleanrooms, fire protection, mechanical, electrical and plumbing systems. Its US subsidiary, United Integrated Services (USA) Corp., is based in Phoenix, Arizona, and builds advanced semiconductor manufacturing facilities alongside major chipmakers, handling planning, engineering, construction and project completion. The US operation hires electrical, mechanical, fire protection and cleanroom engineers, BIM modelers, drafters, QA/QC inspectors, foremen, superintendents, safety technicians, buyers and contract staff.

At United Integrated Services (UIS), we build more than facilities-we build the infrastructure that enables technologies to shape the future. As a global engineering and construction company specializing in the semiconductor industry, UIS brings together talented people, technical expertise, and innovative solutions to deliver the most complex and critical projects in the industry.

Our U.S. team is helping build the next generation of advanced semiconductor manufacturing facilities, working alongside some of the world's leading technology companies. Our work requires precision, collaboration, accountability, and a commitment to doing things the right way-from the planning and engineering stages through construction and project completion.

As UIS continues to grow, we are building more than projects. We are building teams, developing careers, and creating opportunities for talented professionals to make a meaningful impact. If you are looking for an opportunity to work on challenging projects, grow your career, and be part of something bigger, we invite you to build the future with UIS.

WHAT WE OFFER

  • Comprehensive Benefits - Medical, Dental, Vision, Short-Term Disability (STD), Long-Term Disability (LTD), and Life Insurance provided at no cost to employees.
  • Competitive Compensation - Competitive salaries and opportunities for performance-based incentives.
  • Career Growth - Opportunities to develop your skills, take on new challenges, and grow with a rapidly expanding organization, supported by education reimbursement for eligible employees pursuing continued learning and professional development.
  • Meaningful Work - The opportunity to contribute to some of the most advanced semiconductor construction projects in the country.
  • Collaborative Environment - Work alongside experienced professionals across engineering, construction, project management, safety, procurement, and operations.

Summary: The Firestop Installer installs and repairs firestop systems in rated walls, floors, and joints on active construction sites. The role requires hands-on installation experience, practical knowledge of STI, 3M, and Hilti firestop products, and the ability to read and follow UL system drawings and Engineering Judgment (EJ) details.

Essential Duties and Responsibilities include the following. Other duties may be assigned.

  • Install firestop systems for penetrations and joints in rated walls and floors as detailed in approved project documents.
  • Install STI, 3M, and Hilti firestop products in accordance with the approved system and product instructions.
  • Read and follow UL-listed firestop system drawings and the listed installation requirements.
  • Read and follow applicable Engineering Judgment (EJ) details and report field differences to the supervisor.
  • Inspect openings, penetrants, sleeves, and substrates before installation to confirm they match the approved system.
  • Measure openings and annular spaces; prepare surfaces as required by the approved firestop system.
  • Install backing materials and firestop components, including sealants, mortar, putty, wraps, collars, or pillows as specified.
  • Apply firestop materials to the specified depth and configuration using the required tools and methods.
  • Coordinate access and work sequence with supervisors and other trades.
  • Inspect completed work for gaps or missed areas and correct installation issues as directed.
  • Document completed work, locations, system details, and photographs when required.
  • Protect adjacent equipment, finishes, and installed work from damage or contamination.
  • Operate hand and power tools safely for firestop preparation and installation.
  • Handle and stage firestop materials in accordance with product instructions and site requirements.
  • Check product labels and condition; report damaged or expired materials before use.
  • Work from ladders or elevated surfaces when assigned and use required fall-protection equipment.
  • Keep the work area clean and remove firestop waste and debris in accordance with site procedures.
  • Enter confined spaces only when authorized, trained, and covered by applicable permit and safety procedures.
  • Maintain required work permits and installation documentation as directed.
  • Follow supervisor instructions and promptly report questions or field conflicts.
  • Follow company and site safety requirements, including required personal protective equipment (PPE).
  • Perform other firestop or related construction duties as assigned.

Qualifications

  • Prior hands-on firestop installation experience in a commercial or industrial construction setting is required.
  • Experience installing STI, 3M, and Hilti firestop products is required.
  • Ability to read and follow UL-listed firestop system drawings and Engineering Judgment (EJ) details is required.-
  • Ability to compare field conditions with approved details, document completed work, and report discrepancies.
  • Working knowledge of firestop materials, substrate preparation, backing materials, and installation tools.
  • Ability to safely use construction hand and power tools.
  • Ability to work at heights and use fall protection, including harnesses and SRLs.
  • Ability to identify installation issues and support inspection or punch-list corrections.
  • Ability to safely lift and carry materials and perform physical construction work.
  • Attention to detail when measuring openings and installing firestop systems.
  • Ability to work effectively with supervisors, a crew, and other trades.
  • Ability to work the required schedule, including overtime and Saturday shifts when needed.
  • High School Diploma or GED preferred.

Preferred Qualifications

  • Firestop manufacturer training or certification preferred.
  • Experience supporting firestop inspections, installation records, or punch-list closeout preferred.

Additional Requirements:

  • Must have and maintain a valid driver’s license. May be required to travel to other sites within Arizona to perform certain work functions.

Physical Demands:

The physical demands described here are representative of those that a candidate must meet to successfully perform the essential functions of this job.

  • Frequently stand and walk for extended periods throughout the workday.
  • Frequently lift, carry, push, and pull materials weighing up to 50 pounds, and occasionally lift heavier items with assistance or mechanical equipment.
  • Bend, stoop, kneel, crouch, and reach to perform assigned tasks.
  • Use hands and fingers to handle, feel, grasp, and operate tools, equipment, or materials.
  • Perform repetitive motions involving the hands, wrists, and arms.
  • Climb ladders, stairs, or elevated surfaces as required by the job.
  • Maintain visual acuity sufficient to read labels, instructions, safety signage, and documentation.
  • Maintain balance and coordination while moving materials or operating equipment.
  • Ability to work in physically demanding environments requiring frequent movement and manual labor.

Work Environment:

  • Exposure to dust, noise, vibration, and moving mechanical equipment.
  • Indoor and/or outdoor work environments, which may include varying temperatures and weather conditions.
  • Work in confined spaces, elevated areas, or active job sites, depending on project requirements.
  • Required use of personal protective equipment (PPE) such as hard hats, safety glasses, gloves, steel-toe boots, and high-visibility vests.
  • Interaction with powered industrial equipment, tools, and vehicles.

Equal Employment Opportunity:

UIS is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all employees and applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, veteran status. Or any other characteristic protected by federal, state, or local law. We believe in fostering a diverse and inclusive workplace where all individuals are treated with respect and dignity.

Disclaimer:

The above job description is not intended to be an all-inclusive list of duties and standards of the position. Incumbents will follow any other instructions, and perform any other related duties as assigned by their supervisor.

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