Software Engineer III
Agile Defense
Job Description
Job Description
About Agile Defense
At Agile Defense we know that action defines the outcome and new challenges require new solutions. That’s why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next.
Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility—leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation’s vital interests.
Requisition #: 1520
Job Tittle: Software Engineer III
Location: St. Louis, MO
Clearance: Secret
Required Certification: CompTIA Security+ certification or a degree in Computer Science
Job Description- Design, development, testing, and maintenance of non-embedded software throughout the end-to-end lifecycle that meets industry, customer, and safety standards for the Tomahawk program.
- Review, analyze, and translate customer requirements into initial design of software products.
- Developing, maintaining, enhancing and optimizing software products and functionalities for systems integrations.
- Debug and resolve issues identified to ensure the reliability and efficiency of software products.
- Handles user inquiries, troubleshoot technical issues and user feedback analysis.
- Implement current and emerging technologies, tools, frameworks and changes in regulations relevant to software development
- Execute and document software research and development projects
- CompTIA Security+ certification or a degree in Computer Science
- 5+ years
- Active U.S. Secret Clearance with the ability to obtain a TS with the ability to obtain an SCI
- 5+ years of experience with VB.NET or C#.NET (including .NET Framework)
- 3+ years of SQL or other relational database
- 1+ years of Unit testing frameworks like xUnit, nUnit, or MSTest
- Windows Environment (Windows 10/11, Windows Server)
- Knowledge of Windows Desktop Development Project Management Tools (Azure DevOps, Jira, etc.)
- Azure DevOps Pipelines or other CI/CD tools Microservices or RESTful APIs Agile experience
- Strong mathematical analysis skills or STEM degree C++ CompTIA Security+ certification or a degree in Computer Science
Boeing Facility/Office environment
Our Core Values
Employees of Agile Defense are our number one priority, and the importance we place on our culture here is fundamental. Our culture is alive and evolving, but it always stays true to its roots. Here, you are valued as a family member, and we believe that we can accomplish great things together. Agile Defense has been highly successful in the past few years due to our employees and the culture we create together.
What makes us Agile? We call it the 6Hs, the values that define our culture and guide everything we do. Together, these values infuse vibrancy, integrity, and a tireless work ethic into advancing the most important national security and critical civilian missions. It's how we show up every day. It's who we are.
- Happy - Be Infectious. Happiness multiplies and creates a positive and connected environment where motivation and satisfaction have an outsized effect on everything we do.
- Helpful - Be Supportive. Being helpful is the foundation of teamwork, resulting in a supportive atmosphere where collaboration flourishes, and collective success is celebrated.
- Honest - Be Trustworthy. Honesty serves as our compass, ensuring transparent communication and ethical conduct, essential to who we are and the complex domains we support.
- Humble - Be Grounded. Success is not achieved alone, humility ensures a culture of mutual respect, encouraging open communication, and a willingness to learn from one another and take on any task.
- Hungry - Be Eager. Our hunger for excellence drives an insatiable appetite for innovation and continuous improvement, propelling us forward in the face of new and unprecedented challenges.
- Hustle - Be Driven. Hustle is reflected in our relentless work ethic, where we are each committed to going above and beyond to advance the mission and achieve success.
Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
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.
- ...Overview: Position: Software Engineer III Location: Remote (Must work CST hours) Duration: 6-12+ Months Contract Role Overview Strong professional experience with C# and .NET development . Experience with .NET Framework and .NET Core . Experience...SuggestedContract workRemote work
- ...Description: We are looking for a .Net developer to build software using languages and technologies of the .NET framework. You will... ...and maintain effective communication with other software engineers, project managers, cross-functional project teams, and internal...Suggested
- ...Imaging Service Engineer III Tri-Imaging is seeking an experienced Imaging Service Engineer III (ISE III) to serve as a senior technical... ...systems. Perform advanced diagnostics utilizing OEM software, engineering documentation, service manuals, specialized electronic...SuggestedWork at officeRemote workRelocation
- ...Overview: Job Title: Programmer III Job Type: Contract - 12+ Months Work Mode: Remote Position Overview We have an immediate need for a dynamic Application Developer to join our Intranet Development team . The successful candidate will be responsible...SuggestedContract workImmediate startRemote work
- ...with the clients. Currently, we are looking for entry-level software programmers, IT enthusiasts, Python/Java developers, and data... ...Bachelor's degree or Master's degree in Computer Science, Computer Engineering, Electrical Engineering, Information Systems, IT. Highly...SuggestedH1b
- ...Full Stack Software Engineer Reinventing Geospatial, Inc. (RGi) is a fast-paced small business that has the environment and culture of a start-up, with the stability and benefits of a well-established firm. We solve complex problems within geospatial software development...Immediate start
- ...Essential Duties and Responsibilities: - Lead the development of software solutions that will meet or exceed business requirements which... .... Required Skills: -8+ years of full-stack software engineering experience developing enterprise web applications. -...Minimum wageContract workTemporary workWork experience placement
- TITLE:BI App Developer III (Multiple Openings)LOCATION:Maryland Heights, MOJOB SUMMARY:Deliver reporting products and timely analyses... ...development practices through a standard Business Intelligence Software Developer Life Cycle. Use SQL and data warehousing knowledge to...Local area
- ...procedures. Participate in on-call, major-incident, patching, maintenance, onboarding, and project handoffs as assigned. Level II/III engineers mentor peers as assigned, lead complex troubleshooting, perform root-cause analysis, and identify automation or standardization...Full timeWork at officeRemote work
$150k - $224k
...Total Visits, March 2026) Day to Day As a Data Scientist III at Indeed, you will leverage your expertise in data science, statistics... ...the organization. For this role you will work closely with engineering and product teams to identify opportunities, evaluate...Work experience placementLocal area$75.2k - $158.1k
Job Title: Network Engineer III Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS... ...requirements engineering according to several hardware/software development life cycles in a team environment. Knowledge of...Full timeContract workWork experience placementLocal areaFlexible hours- Position DetailsJob Title :Cloud Platform Engineer IIILocation : St. Louis, Missouri 63146Duration :FTEJob SummaryAs a Platform Engineer... ...will help build the foundation that empowers teams to deliver software efficiently, reliably, and securely.Essential Functions:we live...Worldwide
- ...Job Description Job Description Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type... ...actionable recommendations. Preferred Qualifications IAT Level III certification. DoD 8140.01 and DoD 8570.01-M IAT Level III...Contract workLocal area
- ...find cures for cancer. DESCRIPTION: As a Manufacturing Engineer III at Thermo Fisher Scientific, you will optimize production processes... ..., throughput, and data integrity. Ensure compliance with software lifecycle management, patching strategies, licensing, and...Full timeWork at officeRelocation package
- ...Process Automation Engineer III supporting operational technology infrastructure and automation systems in GMP manufacturing at Thermo Fisher Scientific. Responsible for designing and maintaining process control systems, leading troubleshooting efforts, and driving automation...
- Experienced Software Development EngineerCompany:The Boeing CompanyThe Boeing Company is looking for an Experienced Software Development Engineer to join the Government Vehicle Health Maintenance team in Hazelwood, MO. This role supports the Boeing Global Services (BGS)...Full timeWork experience placementInterim roleRelocationVisa sponsorshipWork visaRelocation packageFlexible hoursShift work
$122.4k - $190.9k
Senior Airworthiness Software Certification EngineerCompany:The Boeing CompanyThe Safety, Security, and Airworthiness (SS&A) organization is seeking a Senior Airworthiness Software Certification Engineer to join the Regulatory Administration and Airworthiness DivisionOur...Permanent employmentFull timeInterim roleCurrently hiringRelocationVisa sponsorshipWork visaFlexible hoursShift work$126.65k - $171.35k
Software Engineer - Developer (Experienced or Senior)Company:The Boeing CompanyThe Boeing Company is looking for a Software Engineer / Developer(Experienced or Senior) to join the Phantom Works Open Architecture Systems Integrated Software (OASIS) Solutions team located...Permanent employmentFull timeContract workWork experience placementCurrently hiringRelocationVisa sponsorshipWork visaRelocation packageFlexible hoursShift work$100k - $150k
...for innovation and creating the best experience for job seekers. (*Comscore, Total Visits, March 2026) Day to Day As a Software Engineer II on the Utility team, you will develop and evolve the ranking logic that decides which jobs jobseekers see and in what order...Work experience placementLocal areaRemote work- ..., Terraform (infrastructure model management) Scripting with bash and API clients using cURL and jq Understand and apply software development concepts to machinery that manages the network Use git and your choice of IDE to define and manipulate configuration...
- ...generation of electric motors, controls and drive systems. Job Description Nidec Motor Corporation seeks candidates for a Software Engineer I role to support Nidec Motor Corporation's Climate Technology Heating Ventilation and Air Conditioning group. This position...Contract workShift work
- ...Software Developer III Location- Local to St Louis, MO (Hybrid) Duration-6-12+ months Follows company software development lifecycle to design, code, configure, test, debug, and document system and application programs. Assists in preparing technical design specifications...Local area
- ...generation of electric motors and integrated controls solutions for our customers. As a Co-op Engineer, you will work with an engineering team to learn practical skills in software controls. You will assists engineers in the technical development, evaluation and...Shift work
$85k - $115k
...Advanced Software Engineer ProSight Financial Association, a leading industry organization, is seeking an experienced and results-driven Advanced Software Engineer with strong .NET/C# and SQL skills and hands-on experience developing Microsoft Azure cloud solutions....Work at officeRemote workFlexible hours- ...Software Engineer Equifax is where you can power your possible. If you want to achieve your true potential, chart new paths, develop new skills, collaborate with bright minds, and make a meaningful impact, we want to hear from you. Equifax is seeking creative, high...Full timeImmediate startShift work
- ...Software Engineer Position Role Expectations Demonstrates technical excellence and competency. Relies on supervision to complete tasks; works independently or with support from more senior SE. Builds internal network of business and technical relationships...Contract workRemote work
$131.3k - $237.35k
...Description Join a Mission That Matters! Are you a highly skilled Software Engineer ready to tackle complex technical challenges that directly support our nation’s intelligence mission? Leidos is seeking an accomplished Software Engineer Subject Matter Expert (SME...Contract workFor contractorsLocal areaImmediate start$27 - $34 per hour
...Qualifications: Qualifications Two-year degree in a related science field (e.g., chemistry, analytical chemistry, electronic engineering, biotechnology, or similar) plus 0-1 years (FSE I) or 1-3 years (FSE II) experience in a related field, preferably as a Field...Full timeMonday to FridayNight shift2 days per week1 day per week- ...Senior Software Engineer – Full Stack & Secure Systems We are seeking an experienced and driven Senior Software Engineer to support mission-critical federal intelligence initiatives by developing secure, scalable, and modern software solutions in a high-impact environment...
- ...Sr Software Engineer Contract Location: Saint Louis, MI Skill: Linux administration Client SME: Requirement of MT_CC2_FP_PAS For Prasad Pingle and Prashant area Technical Skills: Unix Fundamentals, ServiceNow, PL/SQL, Weblogic, Websphere Other Mandate Requirements...Contract workShift workDay shift
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Software Engineer III. Be the first to apply!
- intel software engineer Saint Louis, MO
- director software engineering Saint Louis, MO
- software engineer Saint Louis, MO
- senior robotics software engineer Saint Louis, MO
- financial software developer Saint Louis, MO
- graduate software developer Saint Louis, MO
- part time software developer remote Saint Louis, MO
- software engineer remote Saint Louis, MO
- ngo software engineer Saint Louis, MO
- software development engineer aws Saint Louis, MO



