Mechanical Assembler III (Onsite)

Date Posted: 2026-07-02 Country: United States of America Location: US-CA-ANAHEIM-3355 ~ 3355 La Palma Ave ~ LA PALMA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: This job requires a U.S. Person. A U.S. Person is a lawful permanent resident as defined in 8 U.S.C. 1101(a)(20) or who is a protected individual as defined by 8 U.S.C. 1324b(a)(3). U.S. citizens, U.S. nationals, U.S. permanent residents, or individuals granted refugee or asylee status in the U.S. are considered U.S. persons. For a complete definition of “U.S. Person” go here. Security Clearance Type: None/Not Required Security Clearance Status: Not Required As a Mechanical Assembler III at Collins Aerospace, you will support the production of high precision mechanical systems used in advanced aerospace and defense applications. This role is designed for an experienced assembler who can take ownership of complex builds, interpret detailed engineering documentation, and help ensure assemblies meet quality, safety, and performance expectations before they reach the customer. In this position, you will assemble mechanical systems and subassemblies, perform precision alignments, apply torque requirements, conduct functional checks, and troubleshoot issues that arise during the build process. You will also maintain accurate documentation, operate specialized tools and fixtures, and collaborate with engineering, quality, and production teams when technical questions or process improvements arise. As a senior member of the assembly team, you will help mentor less experienced assemblers by sharing best practices, reinforcing safety expectations, and supporting consistent, high quality workmanship across the team. What You Will Do: Assemble complex mechanical systems and subassemblies from engineering drawings, schematics, and work instructions Perform precision alignments, torque applications, and functional testing to ensure assemblies meet specifications Troubleshoot and resolve mechanical issues during the build process, collaborating with engineering when needed Maintain accurate build records, inspection reports, and documentation for quality control Train and mentor junior assemblers, sharing best practices and safety protocols Operate and maintain assembly tools, fixtures, and specialized equipment Ability to lift up to 50 lbs, and stand for extended periods What You Will Learn: Advanced assembly techniques for high-precision mechanical systems How to interpret complex engineering documentation and CAD-generated assembly drawings Cross-functional collaboration with engineering, quality assurance, and production planning teams Continuous improvement methodologies, including Lean Manufacturing and 5S principles Best practices for quality control and root cause analysis in mechanical assembly Qualifications You Must Have: Typically requires HS diploma (or equivalent, e.g. G.E.D in the US) or vocational/technical education in related discipline with a minimum of 2 years of relevant experience Demonstrated proficiency in reading and interpreting mechanical drawings, blueprints, and schematics Previous experience using precision measurement tools (calipers, micrometers, dial indicators) Qualifications We Prefer: 5+ years of mechanical assembly experience, with at least 2 years in a senior or lead role Strong troubleshooting skills and the ability to work independently on complex builds Experience in aerospace, defense, or high-tech manufacturing environments Familiarity with ERP systems for work order tracking and documentation What We Offer: Medical, dental, and vision insurance Three weeks of vacation for newly hired employees Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option Tuition reimbursement program Student Loan Repayment Program Life insurance and disability coverage Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection Birth, adoption, parental leave benefits Ovia Health, fertility, and family planning Adoption Assistance Autism Benefit Employee Assistance Plan, including up to 10 free counseling sessions Healthy You Incentives, wellness rewards program Doctor on Demand, virtual doctor visits Bright Horizons, child and elder care services Teladoc Medical Experts, second opinion program And more! Learn More & Apply Now! Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions — whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you’ll have your own critical part to play in ensuring our customer succeeds today while anticipating their needs for tomorrow. Are you up for the challenge? Join our mission today. * Please consider the following role type definitions as you apply for this role. Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other – propel us all higher, again and again. Apply now and be part of the team that’s redefining aerospace, every day. The salary range for this role is $23.00/hr USD - $43.25/hr USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills. As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance. This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply. RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. Privacy Policy and Terms: Click on this link to read the Policy and Terms RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.