Senior Systems Engineer - Onsite

RTX; Largo (FL); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Three weeks of vacation

401(k) plan with employer matching

Tuition reimbursement

Job summary

RTX is seeking a Senior Systems Engineer for onsite support at Largo, FL to guide system development and integration for US military and international customers. You will lead tests, develop concepts, and work with customers and suppliers to deliver world-class solutions.

A DoD Secret clearance and US citizenship are required, with the ability to obtain clearance after start. This role emphasizes integration and test across multidisciplinary teams, and offers strong career growth within Collins

Qualifications

• Requires multidisciplinary design teamwork and collaboration.
• Experience across the Systems Engineering V with emphasis on integration and test.
• Experience creating and reviewing mechanical drawings and designs.
• U.S. citizenship and ability to obtain DoD Secret Clearance are required.

Responsibilities

• Support full lifecycle development from CONOPS to Validation with customers and leadership.
• Lead Integration, Dry Run, and Formal Qualification Testing of products.
• Analyze and generate mechanical and system design documents.
• Influence decisions across complex problems and identify gaps to improve solutions.

Skills

Multidisciplinary teamwork

Systems Engineering

Test Engineering

Software Engineering

Electrical Engineering

Security Clearance

US citizenship

Education

STEM degree

Advanced degree

Tools

Wireshark

Job description

Date Posted:

2026-09-01

Country:

United States of America

Location:

US-FL-LARGO-382SR ~ 7887 Bryan Dairy Rd ~ BLDG 600

Position Role Type:

Onsite

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

The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type:

DoD Clearance: Secret

Security Clearance Status:

Active and existing security clearance required after day 1

Senior Systems Engineer - Onsite

Raytheon Company, Managed by Collins Aerospace

At RTX, the world largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.

Role Description:

The Integrated Platforms (IP) team is hiring a Senior Systems Engineer to support programs for our US military and various international customers, keeping the world safe from foreign threats. IP supports multiple Collins contracts and is seeking to fill roles across several open contracts – our goal is to align each new hire with a position that best suits their skills and allows for career growth. As a Senior Systems Engineer, you will guide system development and integration, supporting test development, and working closely with our customers and suppliers to ensure we deliver world class solutions.

This position requires: the ability to obtain a US Government Department of Defense (DoD) Secret Security Clearance after start.

Onsite: This is an onsite role supporting our Largo, FL location.

Sign-on Bonus Eligible

What YOU will do:

• Support the development of full lifecycle solutions from CONOPS to Validation while collaborating with the customer, subcontractors, and executive leadership

• Play a key role in the Integration, Dry Run, and Formal Qualification Testing of the products you work on

• Analyze and generate mechanical design documents

• Influence decision-makers with recommended courses of action across complex problems

• Support business capture through identifying technological gaps and opportunities

Qualifications You Must Have:

• Ability to work in a multidisciplinary teams of design professionals including Electrical, Mechanical, Software, Test, Logistics and other System Engineers

• Practical experience in Mechanical Engineering and at least one of the following areas:

• Systems Engineering

• Test Engineering

• Software Engineering

• Electrical Engineering

• Experience across the Systems Engineering V with an emphasis on integration and test

• Experience in creating and reviewing mechanical drawings

• 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 or in absence of a degree, 9 years of relevant experience

• The ability to obtain a US Government DoD Secret Clearance

• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Qualifications We Prefer:

• Experience with voice communication systems, including VoIP (Voice over IP) protocols like SIP, RTP and SRTP

• Familiarity with multicast networking (e.g., IGMP, PIM) for efficient data transmission in communication systems

• Strong understanding of networking principles, including TCP/IP, UDP, and network troubleshooting tools (e.g., Wireshark).

• Knowledge of military specifications (e.g., MIL-STD-810, MIL-STD-461) for designing rugged and reliable systems

• Experience leading discussions with customers and vendors/subcontractors

• Experience writing and reviewing BOEs

• A current active and transferable US Governement DoD Secret Clearance

What We Offer:

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

• Eligible for relocation assistance

• And more!

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

Relocation: Assistance may be provided

Employee Referral Eligible

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.

#MISENG

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attendselect 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.