Concept Development jobs in Chillicothe, IL

Remote

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Today

Job ID: 2613175-OTHLOC-286 Location: Remote Work, DC, US Date Posted: 2026-06-02 Category: Engineering and Sciences Subcategory: Sys Safety Engr Schedule: Full-Time Shift: Day Job Travel: Yes - 10% of the time Minimum Clearance Required: Interim_Secret Clearance Level Must Be Able to Obtain: Secret Potential for Remote Work: ORA_REMOTE Description SAIC is seeking a System Safety Engineer to provide critical safety engineering analysis and support for the Submarine Launched Cruise Missi

Full-time

USD 80,001.00 - 120,000.00 per year

Senior System Safety Engineer

Remote

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Today

Job ID: 2613175 Location: Remote Work, IN, US Date Posted: 2026-06-02 Category: Engineering and Sciences Subcategory: Sys Safety Engr Schedule: Full-Time Shift: Day Job Travel: Yes - 10% of the time Minimum Clearance Required: Interim_Secret Clearance Level Must Be Able to Obtain: Secret Potential for Remote Work: ORA_REMOTE Description SAIC is seeking a System Safety Engineer to provide critical safety engineering analysis and support for the Submarine Launched Cruise Missile - Nuclea

Full-time

USD 80,001.00 - 120,000.00 per year

Project Engineer

Remote or Cockeysville, Maryland

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Today

Technical Project Engineer (Vehicle Programs) 12+ Month Contract Onsite in Hunt Valley, MD About This Role Seeking an experienced Project Engineer to support the United States Marine Corps Advanced Reconnaissance Vehicle (ARV) program. This role supports the development of the Cottonmouth ARV, a next-generation amphibious reconnaissance vehicle built using a Modular Open Systems Approach (MOSA), Ground Vehicle Operating System (GVOS), and Tactical Assault Kit Extended (TAK-X) framework. The Co

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Contract

Lead Full-Stack Developer

Remote

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11d ago

Lead Full-Stack Developer Remote This role supports a federal client and requires the ability to obtain a public trust clearance. No sponsorship is available. We are seeking a Lead Full-Stack Developer to support a major federal modernization initiative focused on building secure, scalable, cloud-native applications on AWS. This is a remote, hands-on technical leadership role for someone who can lead architecture, mentor developers, define technical standards, and still contribute directly to fu

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Contract

Depends on Experience

GTM AI Engineer

Remote

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Today

Who we are: Motive empowers the people who run physical operations with tools to make their work safer, more productive, and more profitable. For the first time ever, safety, operations and finance teams can manage their drivers, vehicles, equipment, and fleet related spend in a single system. Combined with industry leading AI, the Motive platform gives you complete visibility and control, and significantly reduces manual workloads by automating and simplifying tasks. Motive serves nearly 100,

Full-time

USD 112,000.00 - 140,000.00 per year

Control Systems Engineer

Chillicothe, Illinois

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Today

RFA Engineering ( is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking an entry level to experienced candidate to become an integral part of our engineering team. The selected candidate will work with an experienced engineering staff using state-of-the-art engineering tools & processes. This position will operate onsite at our customer's world-class engineering and manufacturing facility. This is a full-time positio

Full-time

USD 70,000.00 - 100,000.00 per year

Systems Engineer - Project Engineer IV

Remote or Colorado

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Today

Voyager is an innovative defense, national security and space technology company committed to advancing and delivering transformative, mission-critical solutions. We tackle the most complex challenges to unlock new frontiers for human progress, fortify national security, and protect critical assets to lead in the race for technological and operational superiority from ground to space. Forge the Future: Join Voyager Technologies The future belongs to those who build it. At Voyager Technologies,

Full-time

USD 125,700.00 - 173,700.00 per year

Systems Engineer - Project Engineer V

Remote or Colorado

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Today

Full-time

USD 161,700.00 - 199,400.00 per year

Systems Engineer III

Chillicothe, Illinois

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Today

RFA Engineering ( is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking a growth-oriented candidate to become an integral part of our engineering team. The selected candidate will work with an experienced engineering staff using state-of-the-art engineering tools & processes. This position will operate hybrid with a minimum of 3 days a week at our customer's world-class engineering and manufacturing facility in Mossvi

Full-time

USD 90,000.00 - 110,000.00 per year

Electrical Engineer

Chillicothe, Illinois

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Today

RFA Engineering ( is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking an entry to experienced level candidate to become an integral part of our engineering team. The selected candidate will work with an experienced engineering staff using state-of-the-art engineering tools & processes. This position will operate onsite at our customer's world-class engineering and manufacturing facility. This is a full-time positio

Full-time

USD 70,000.00 - 105,000.00 per year

Mechanical Design Engineer

Chillicothe, Illinois

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Today

RFA Engineering ( is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking an entry-level to experienced candidate to become an integral part of our engineering team. The selected candidate will work with an experienced engineering staff using state-of-the-art engineering tools & processes. This position will operate onsite at our customer's world-class engineering and manufacturing facility. This is a full-time positio

Full-time

USD 70,000.00 - 95,000.00 per year

Mechanical Engineer - CFD and Cooling Systems

Chillicothe, Illinois

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Today

RFA Engineering ( is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking a growth-oriented candidate to become an integral part of our engineering team. The selected candidate will work with an experienced engineering staff using state-of-the-art engineering tools & processes. This position will operate onsite at our customer's world-class engineering and manufacturing facility in Mossville, IL. This is a full-time po

Full-time

USD 70,000.00 - 85,000.00 per year

Process Design Engineer

Remote or West Virginia

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Today

Solenis is a leading global provider of water and hygiene solutions. The company's product portfolio includes a broad array of water treatment chemistries, process aids, functional additives, cleaners, disinfectants, and state-of-the-art monitoring, control and delivery systems. These technologies are used by customers to improve operational efficiencies, enhance product quality, protect plant assets, minimize environmental impact, and create cleaner and safer environments. Headquartered in Wilm

Full-time

USD 93,530.00 - 137,181.00 per year

Mechanical Engineer

Chillicothe, Illinois

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Today

Full-time

USD 70,000.00 - 95,000.00 per year

Entry Level Mechanical Engineer

Chillicothe, Illinois

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Today

RFA Engineering ( is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking an Entry Level candidate to become an integral part of our engineering team. The selected candidate will work with an experienced engineering staff using state-of-the-art engineering tools & processes. This position will operate onsite at our customer's world-class engineering and manufacturing facility. This is a full-time position with a full b

Full-time

USD 60,000.00 - 78,000.00 per year

Senior Electrical Engineer

Chillicothe, Illinois

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Today

RFA Engineering ( is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking an experienced level candidate to become an integral part of our engineering team. The selected candidate will work with an experienced engineering staff using state-of-the-art engineering tools & processes. This position will operate onsite at our customer's world-class engineering and manufacturing facility. This is a full-time position with a

Full-time

USD 90,000.00 - 120,000.00 per year

Development/Research Engineer II

Chillicothe, Illinois

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Today

RFA Engineering ( is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking an Entry-Mid Level candidate to become an integral part of our engineering team. The selected candidate will work with an experienced engineering staff using state-of-the-art engineering tools & processes. This position will operate onsite at our customer's world-class engineering and manufacturing facility. This is a full-time position with a fu

Full-time

USD 60,000.00 - 80,000.00 per year

CFD Engineer III-V (Fluid Vibrations Analysis)

Remote or Rockville, Maryland

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Today

X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities. All applications will be submitted via our company career page, We will never ask you to provide payment information as part of the recruiting process. If anyone claiming to represent X-energy directs you in a manner otherwise, please contact us at ;br> Job Description This role is responsible for the engineering design and development of mechanical s

Full-time

USD 115,000.00 - 140,000.00 per year

CFD/ Thermal Hydraulics Engineer III

Remote or Rockville, Maryland

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Today

Full-time

USD 115,000.00 - 140,000.00 per year

Sr. Platform Engineer (Mission Partner Environment)

Remote

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: None Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: DevSecOps, Hybrid Cloud Solutions, Information Technology (IT) Infrastructure Engineering Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: Apply your expertise to advance the mission and optimize our busines

Full-time

USD 170,000.00 - 230,000.00 per year

Concept Development jobs in Chillicothe, IL 61523, USA