Senior Full Stack Developer Jobs in Beloit, WI (NOW HIRING)

Date Posted:

2026-05-01

Country:

United States of America

Location:

US-IL-ROCKFORD-P6 ~ 4747 Harrison Ave ~ 4747 HARRISON AVE-P6

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.

Security Clearance Type:

None/Not Required

Security Clearance Status:

Not Required

We are seeking a Senior Mechanical Engineer – Packaging Engineer in Rockford, Illinois. This role is responsible for mechanical engineering focused on the packaging of electrical and electronic products, including the development of energy-efficient, lightweight, and cost-effective components alongside optimized placement within various electrical systems. It requires a combination of experience in mechanical design, analysis, and testing for electronic systems, including electronic packaging, printed wiring boards (PWBs), circuit card assemblies (CCAs), and mechanical enclosures. Designs are developed and finalized through formal design reviews and the release of associated engineering drawings. The work supports both commercial and military applications.

• Apply mechanical design principles to evaluate and resolve product and process issues across the full product lifecycle—including design, testing, and production—while adhering to standard work practices.
• Lead targeted technical assignments during investigations, design activities, or testing that require analysis, evaluation, and application of engineering principles, theories, and methods.
• Develop energy-efficient, lightweight, and cost-effective electronic components.
• Collaborate closely with thermal and stress analysis engineering teams.
• Support the investigation, development, and testing of products with defined operational, spatial, and functional requirements; design new solutions or select existing designs that meet specifications.
• Create, review, and update technical content for drawings, engineering specifications, reports, and other documentation throughout the engineering process.
• Evaluate requests related to legacy drawings, providing clarifications or implementing engineering changes to support ongoing product manufacturing.
• Participate in troubleshooting and resolution of issues on the manufacturing floor.

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience
• Strong foundation in mechanical engineering principles and their application to design and analysis activities.

• Bachelor’s degree in Mechanical Engineering or related engineering discipline.
• Experience in mechanical design or analysis of electronic systems, including electronic packaging, Printed Wiring Boards (PWBs), Circuit Card Assemblies (CCAs), and/or mechanical enclosures.
• Ability to read wiring schematics.
• Proficiency with Microsoft Office tools (Word, Excel, PowerPoint).
• Experience modeling and/or interpreting designs in NX/Unigraphics.
• Knowledge of environmental, reliability, and safety requirements.
• Demonstrated experience with continuous improvement practices and structured root cause analysis methods.
• Ability to work effectively both independently and within an integrated, cross‑functional product development team.
• Ability to communicate clearly and collaborate within a cross‑functional support team environment.

Some of our competitive benefits package includes:

• 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 illnessinsurance, 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!

*Please ensure the role type (defined below) is appropriate for your needs before applying to this role.

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.

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.

The salary range for this role is 86,800 USD - 165,200 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. 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.

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