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Entry Level Defense Contractor Software Engineer Jobs in St Louis, MO

Boeing

Embedded Software Engineer - Entry-Level

Hazelwood, MO · On-site

$124K - $163K/yr

  • Medical

  • Life

  • Retirement

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking for an Embedded Software Engineer - Entry-Level to join our Government Vehicle Health Management ...

Boeing

Embedded Software Engineer - Entry-Level

Berkeley, MO · On-site

$123K - $162K/yr

  • Medical

  • Life

  • Retirement

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking for an Embedded Software Engineer - Entry-Level to join our Government Vehicle Health Management ...

New

Boeing

Embedded Software Engineer - Entry-Level

Berkeley, MO

$123K - $162K/yr

  • Medical

  • Life

  • Retirement

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking for an Embedded Software Engineer - Entry-Level to join our Government Vehicle Health Management ...

New

Boeing

Embedded Software Engineer - Entry-Level

Hazelwood, MO

$124K - $163K/yr

  • Medical

  • Life

  • Retirement

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking for an Embedded Software Engineer - Entry-Level to join our Government Vehicle Health Management ...

New

Boeing

Embedded Software Engineer - Entry-Level

Hazelwood, MO

$124K - $163K/yr

  • Medical

  • Life

  • Retirement

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking for an Embedded Software Engineer - Entry-Level to join our Government Vehicle Health Management ...

New

Maritz

Software Engineer I

Fenton, MO · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The Software Engineer I supports the development of software that serves Maritz technology, working ... What You'll Be Doing We are looking for an entry level engineer who is eager to learn and build ...

MasterCard

Software Engineer II

O Fallon, MO · On-site

$92K - $147K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

A Software Engineer II is an earlycareer or entrylevel engineer who contributes to the design, development, testing, and maintenance of software solutions under the guidance of more senior engineers.

Maritz Loyalty Marketing

Software Engineer II

Fenton, MO · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The Software Engineer II supports the development of software that serves Maritz technology, working closely with and under the guidance of fellow engineers on the team. In this role, you will help ...

Amyx Inc

Software Engineering Lead

O Fallon, IL · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Overview Amyx is seeking a Software Engineering Lead to join our Dept. of Defense client at Scott ... Amyx is a VEVRAA federal contractor and we request priority referral of veterans. Physical Demands ...

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All JobsDefense Contractor Software Engineer JobsEntry Level Defense Contractor Software Engineer JobsEntry Level Defense Contractor Software Engineer Jobs in St. Louis, MO

Entry Level Defense Contractor Software Engineer information

See St Louis, MO salary details

$23.3K

$102K

$183.8K

How much do entry level defense contractor software engineer jobs pay per year?

As of Aug 17, 2026, the average yearly pay for entry level defense contractor software engineer in St. Louis, MO is $101,950.00, according to ZipRecruiter salary data. Most workers in this role earn between $63,200.00 and $116,700.00 per year, depending on experience, location, and employer.

What does an entry level defense contractor software engineer do?

An Entry Level Defense Contractor Software Engineer works on developing, testing, and maintaining software systems used in defense applications. This role often involves collaborating with multidisciplinary teams to create secure and reliable solutions for military or government clients. Responsibilities might include writing code, debugging software, and ensuring compliance with security and quality standards specific to the defense industry. Entry-level engineers often receive mentorship and training to help them understand specialized technologies and protocols required for defense projects.

What are the key skills and qualifications needed to thrive as an entry level defense contractor software engineer?

To thrive as an Entry Level Defense Contractor Software Engineer, you need a solid background in computer science or software engineering, with proficiency in programming languages such as C++, Java, or Python, often supported by a relevant degree. Familiarity with version control systems like Git, integrated development environments (IDEs), and compliance with security standards such as DoD STIGs or obtaining a Security+ certification may be required. Strong analytical thinking, attention to detail, and effective teamwork are crucial soft skills for success in this environment. These skills and qualifications are vital to produce secure, reliable software that meets strict governmental regulations and supports critical defense operations.

What types of projects and technologies do entry level defense contractor software engineers typically work on?

As an entry-level software engineer in the defense contracting industry, you will often work on projects related to embedded systems, simulation software, cybersecurity applications, or mission-critical systems. Technologies commonly used include programming languages like C++, Java, or Python, as well as specialized tools for version control, testing, and secure software development. You’ll collaborate closely with multidisciplinary teams, including systems engineers, project managers, and, at times, hardware engineers. A key challenge is adhering to strict security protocols and regulatory standards, but you will gain valuable experience in secure coding practices and large-scale system integration. These projects provide a strong foundation for future advancement within the industry.

What is the difference between Entry Level Defense Contractor Software Engineer vs Entry Level Software Developer?

AspectEntry Level Defense Contractor Software EngineerEntry Level Software Developer
CredentialsBachelor's in CS or related field; security clearance often preferredBachelor's in CS or related field; security clearance usually not required
Work EnvironmentGovernment contractors, defense agencies, secure facilitiesTech companies, startups, corporate offices
Industry UsagePrimarily defense, aerospace, government projectsBroad industry, including tech, finance, healthcare
Job FocusEmbedded systems, cybersecurity, defense-specific applicationsWeb, mobile, enterprise applications

While both roles involve software development, Entry Level Defense Contractor Software Engineer typically requires security clearance and focuses on defense-related projects within government or military sectors. Entry Level Software Developer has a broader industry scope with less emphasis on security clearance, working on commercial applications across various industries.

What are the most commonly searched types of Defense Contractor Software Engineer jobs in St. Louis, MO?

The most popular types of Defense Contractor Software Engineer jobs in St. Louis, MO are:

What are popular job titles related to Entry Level Defense Contractor Software Engineer jobs in St. Louis, MO?

For Entry Level Defense Contractor Software Engineer jobs in St. Louis, MO, the most frequently searched job titles are:

What job categories do people searching Entry Level Defense Contractor Software Engineer jobs in St. Louis, MO look for?

The top searched job categories for Entry Level Defense Contractor Software Engineer jobs in St. Louis, MO are:

What cities near St. Louis, MO are hiring for Entry Level Defense Contractor Software Engineer jobs?

Cities near St. Louis, MO with the most Entry Level Defense Contractor Software Engineer job openings:

Entry Level Defense Contractor Software Engineer jobs near you

Software Developer | Military Veterans

INflow Federal

Saint Louis, MO

Full-time

Re-posted 23 days ago

Job description

About INflow Federal - founded in 2013, INflow Federal is a mission-driven small business delivering cutting-edge solutions to the Department of War (DoW) and Joint Force operations across 20+ states. Our strength comes from our people - especially the Veterans who make up over 50% of our workforce. Through our Veteran Outreach Program and employee-first culture, we invest deeply in professional growth, well-being, and innovation. Known for our agility, transparency, and integrity, INflow combines real-world experience with emerging technologies like AI/ML to help our customers lead in a rapidly evolving defense landscape. We empower both our employees and mission partners to stay ahead - driving smarter, faster, and more secure outcomes.
Job Overview:

INflow Federal is on the lookout for skilled transitioning military personnel and veterans who are passionate about leveraging their expertise in a new capacity within the government contracting sector. We offer an exceptional chance to progress your career as a Full Stack Software Engineer, allowing you to make a substantial contribution to the warfighter mission while expanding your professional horizon.

Established in 2013, INflow Federal is rooted in a culture that values its workforce above all, a philosophy that we believe is the cornerstone of our success. Our unwavering commitment to our team has consistently fueled our ability to deliver outstanding results for our clients. We take immense pride in our homegrown "Veteran Outreach Program," a testament to our dedication to empowering veterans. This initiative has been a key factor in ensuring that veterans constitute over half of our workforce, a distinction that underscores our adaptability, growth, and forward-looking stance in supporting mission-critical systems and operations.

As a Full Stack Software Engineer at INflow Federal, you will be instrumental in our mission to deliver state-of-the-art technological solutions to our DoD clients, playing a crucial role in the development and deployment of sophisticated software systems. Your expertise will contribute significantly to our strategic goals, facilitating the creation of robust, scalable, and innovative software solutions that enhance our operational capabilities and cybersecurity posture.

Here, your work is more than a job-it's a journey in innovation. With opportunities to work on high-impact projects, access to the latest technologies, and a culture that thrives on creativity and collaboration, INflow Federal is where your expertise can truly make a difference.
Related MOS Codes We're Seeking:
  • Army: 25B, 25C, 25F, 25L, 25N, 25Q, 25S, 25U, 25W, 25X, 94F 
  • USMC (United States Marine Corps): 0600, 0631, 0633, 0639, 0651, 0639, 0681, 0699, 0630, 0605, 0601, 2800, 2813, 2847, 2862, 5900, 5939, 5948, 5970, 5974, 5993
  • USAF (United States Air Force): 1D, 1D7X1A, 1B4X1 - Cyber Warfare Operations, 3D0X2 - Cyber Systems Operations, 3D1X2 - Cyber Transport Systems, 3D1X7 - Cable and Antenna Systems 
  • USN & USCG (United States Navy & United States Coast Guard): ET, ETN, ETV, ETR, Electronics Technician, IT, ITS, Information System Technician, IC, DS, Data Systems Technician 
Various Responsibilities & Requirements:
  • Proficiency in Full Stack Development: Proficiency in front-end and back-end technologies, frameworks, and languages. Familiarity with HTML, CSS, JavaScript, and one or more back-end languages (e.g., Java, Python, Ruby).
  • Cloud Technologies: Knowledge of cloud services, deployment, and management within platforms such as AWS, Azure, or Google Cloud. Ability to leverage cloud capabilities to optimize software solutions.
  • DevOps Practices: Familiarity with continuous integration/continuous deployment (CI/CD) pipelines, automated testing, and deployment strategies to streamline development and enhance collaboration.
  • Version Control Proficiency: Experience with version control systems like Git, understanding branching, merging, and pull request workflows to maintain code quality and collaborative development.
Clearance Requirements :
  • TS/SCI (CI poly required to start)
Certification Requirements
Most of our contracts require DoD 8140 (formerly 8570) compliance. We built 8140.study - our certification training platform - to help. This helps you study for certifications such as the CompTIA Security+.
Other Notes
  • Some travel may be required: Must have valid driver's license and transportation. This is subject to change at the direction of the customer.
  • If accommodation is needed with your application or the interview process for applicants with disabilities, please contact Human Resources at 703-594-8601.
  • Candidate must have the ability to lift up to 50 lbs.
  • Must have willingness to perform duties not listed in the job description as required by INflow and our customer.
Citizenship Requirements
* Please note that INflow Federal is a defense contractor. Pursuant to our government contracts, candidates must be US Citizens to be considered for employment.
Equal Opportunity Employer 
Diversity and Inclusion
INflow provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.
 
This commitment applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, leaves of absence, compensation, and training. Job applicants and employees are evaluated solely on job-related qualifications and experience.
 
 
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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