Core Assembly Jobs in Phoenix, AZ (NOW HIRING)

Capitol Engineering is an established and expanding custom fabrication company delivering high quality engineered & fabricated steel products to a wide variety of industries including mining, agriculture, and general industrial applications. Capitol Engineering was established in 1937 and we are currently growing at a rapid pace and are looking to add a Quality Control Assistant to our team.
This position requires an experienced and detail-focused individual that wants to be part of a growing team. The ideal candidate will have a keen eye for detail, strong analytical skills, and a proactive approach to problem solving.
ABOUT THE ROLE
Capitol Engineering is hiring a Welder / Fitter 1 for our Phoenix fabrication shop. This is a hands-on production role that combines MIG (GMAW) and Flux-Core (FCAW) welding with material fit-up and assembly across the full range of custom products we build - structural steel, tanks, ducting, mining and wear equipment, and other specialty fabrications in carbon steel, stainless steel, aluminum, and abrasion-resistant (AR) plate.
We welcome candidates whose strength is welding, whose strength is fitting, or who do both. Whichever describes you, we want to hear from you - day-to-day assignments and skill placement are based on hands-on ability, and there is a clear path to grow into the other side of the trade over time.
WHAT YOU'LL DO
Production Welding - MIG & Flux-Core
- Perform GMAW (MIG) and FCAW (Flux-Core) welding on assigned workpieces, in the positions for which you are qualified, in accordance with applicable Welding Procedure Specifications (WPS) and company quality standards.
- Weld on a variety of product types - structural components, tank sections, ducting, equipment frames, wear parts, and other custom fabrications - following work order instructions.
- Set up welding equipment and adjust parameters (wire feed speed, voltage, travel speed, shielding gas) per WPS requirements for each material and joint configuration.
- Perform tack welding to secure components in position prior to final welding sequences.
Fit-Up & Assembly
- Position and secure components for structural assemblies, tank sections, equipment frames, ducting, and other custom fabrications in accordance with work orders and shop sketches.
- Use measuring and layout tools - tape measure, combination square, torpedo level, framing square, soapstone - to verify component dimensions, squareness, and alignment before tacking.
- Prep weld joints using grinders, wire wheels, and flap discs, applying the correct tooling and contamination-prevention practices for the material being prepared.
- Report fit-up discrepancies or missing information to the Shop Lead before proceeding.
Weld Quality & Self-Inspection
- Verify joint cleanliness, fit-up condition, and WPS parameters before beginning each weld assignment.
- Perform visual self-inspection of completed welds against acceptance criteria - size, length, profile, fusion, porosity, undercut, and overlap - before releasing work.
- Report weld defects, non-conformances, or quality concerns to the Shop Lead immediately.
Equipment, Safety & Housekeeping
- Operate welding equipment, wire feeders, power sources, cutting tools, and associated tooling proficiently and safely; perform pre-use checks each shift and report issues promptly.
- Wear all required PPE at all times and follow facility safety protocols, lockout/tagout procedures, fume extraction requirements, and material-specific handling and ventilation practices.
- Maintain a clean, organized, and safe work station throughout the shift and report unsafe conditions or near-misses to supervision immediately.
- Perform other related duties as assigned in support of production operations.
WHAT WE'RE LOOKING FOR
Required
- High school diploma or equivalent.
- 3-5 years of production welding and/or fabrication experience across multiple product types.
- Strength in one or both sides of the role: an active welder performance qualification using GMAW (MIG) per applicable welding code or company WPS, and/or demonstrated fit-up and assembly ability using measuring and layout tools.
- Ability to read and follow work orders, shop sketches, and WPS documentation, and to take verbal direction accurately and consistently.
- Willingness to develop the complementary skill - welders growing into fit-up, or fitters pursuing welder qualification - with company support.
- Reliable attendance, strong work ethic, and a commitment to producing quality work safely.
Preferred
- Experience welding or handling stainless steel, aluminum, or abrasion-resistant (AR) plate.
- Familiarity with filler metal and shielding gas selection for carbon and stainless steel.
- Experience operating production equipment such as a band saw, cold saw, plasma table, press brake, or beamline.
- AWS Certified Welder credential and/or OSHA 10 General Industry certification.
WORKING CONDITIONS
Physical Requirements
- Regularly stand, walk, and remain on your feet for the majority of the shift in a production shop environment.
- Frequent bending, kneeling, crouching, and reaching during welding, fit-up, grinding, and machine operation.
- Occasional lifting and carrying of materials, tooling, and components up to 50 lbs; team lifts or mechanical assists are used for heavier items.
- Sustained work requiring manual dexterity, hand-eye coordination, and physical endurance across varied fabrication tasks.
- Ability to wear and work in all required PPE - welding helmet, safety glasses, gloves, hearing protection, and protective clothing - for extended periods.
Environmental Conditions
- Work is performed in a custom metal fabrication shop subject to varying temperatures, noise, dust, metal particulate, and vibration.
- Regular exposure to welding fumes, arc flash, UV radiation, heat, and cutting byproducts inherent to a production fabrication environment.
- Exposure to a range of base metals - carbon steel, stainless steel, aluminum, and AR plate - each with associated handling and fume considerations.
- Proper ventilation, fume extraction, and PPE are provided and required at all times per company safety policies and OSHA regulations.
SCHEDULE & WORK ENVIRONMENT
- Standard Monday through Friday schedule during regular facility operating hours.
- Occasional overtime may be required to meet production demands or project deadlines.
- This is an on-site position. Remote work is not applicable to the essential functions of this role.
This posting is intended to describe the general nature and level of work performed. It is not an exhaustive list of all responsibilities, duties, or skills required. Capitol Engineering is an Equal Opportunity Employer.