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Internal Developer Tools Software Engineer Jobs in Missouri

Title and Summary Lead Software Engineer Overview Mastercard is a global technology company in the ... internal developer platforms using Backstage or similar frameworks, leveraging plugin-based ...

$104K - $139K/yr

... internal developer platforms, and large-scale data infrastructure. In this role, you will help ... Champion and actively drive adoption of GenAI-based tools and workflows across the Cloud Platform ...

... internal developer platforms using Backstage or similar frameworks, leveraging plugin-based ... software design, testing, debugging, and operational excellence • Provide hands-on guidance in ...

... internal developer platforms using Backstage or similar frameworks, leveraging plugin-based ... software design, testing, debugging, and operational excellence • Provide hands-on guidance in ...

Software Engineer II

Kansas City, MO · Hybrid

$95K - $130K/yr

They use broad knowledge of software engineering discipline, processes, and tools to complete various project subtasks. They interact with internal customers and team members to facilitate the ...

Software Engineer II

Kansas City, MO · Hybrid

$95K - $130K/yr

They use broad knowledge of software engineering discipline, processes, and tools to complete various project subtasks. They interact with internal customers and team members to facilitate the ...

Software Engineer II

Kansas City, MO · Hybrid

$95K - $130K/yr

They use broad knowledge of software engineering discipline, processes, and tools to complete various project subtasks. They interact with internal customers and team members to facilitate the ...

Software Engineer II

Kansas City, MO · On-site

$95K - $130K/yr

They use broad knowledge of software engineering discipline, processes, and tools to complete various project subtasks. They interact with internal customers and team members to facilitate the ...

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Internal Developer Tools Software Engineer information

How do Internal Developer Tools Software Engineers typically interact with other development teams within the company?

Internal Developer Tools Software Engineers work closely with a variety of engineering teams to understand their workflows, gather feedback, and identify pain points in the development process. Communication is key, as these engineers often facilitate onboarding, provide training for new tools, and respond to support requests. Collaboration usually involves participating in cross-team meetings, collecting requirements, and iterating on tools based on real-world usage. This close partnership ensures that the tools developed genuinely improve productivity and address the practical needs of their colleagues.

What is the difference between Internal Developer Tools Software Engineer vs Software Engineer?

AspectInternal Developer Tools Software EngineerSoftware Engineer
Primary FocusDeveloping and maintaining internal tools to improve developer productivityBuilding applications, systems, or features for end-users or clients
Work EnvironmentTypically within tech companies, collaborating with internal teamsVaries across industries, often with direct customer interaction
Required SkillsStrong programming, understanding of developer workflows, internal tool developmentBroad software development skills, depending on domain
Industry UsagePrimarily in tech companies, startups, and large enterprises with internal toolsAcross all industries including tech, finance, healthcare, etc.

In summary, Internal Developer Tools Software Engineers focus on creating tools that enhance internal developer efficiency, whereas Software Engineers develop a wide range of applications for external users. Both roles require strong programming skills but differ in their primary objectives and work environments.

What are Internal Developer Tools Software Engineers?

Internal Developer Tools Software Engineers are specialists who design, build, and maintain software tools that improve the productivity of other developers within an organization. Their work often includes creating build systems, continuous integration pipelines, testing frameworks, and deployment tools. These engineers collaborate closely with development teams to understand their workflows and challenges, then develop solutions that streamline processes, reduce manual work, and enhance code quality. By focusing on internal tooling, they help the whole engineering organization move faster and deliver higher-quality products.

What are the key skills and qualifications needed to thrive as an Internal Developer Tools Software Engineer, and why are they important?

To thrive as an Internal Developer Tools Software Engineer, you need strong programming skills (often in languages like Python, Java, or Go), expertise in software development processes, and experience with building scalable infrastructure, typically supported by a degree in computer science or related field. Familiarity with CI/CD systems, containerization tools (like Docker and Kubernetes), version control (such as Git), and cloud platforms is usually required. Excellent problem-solving abilities, collaboration, and proactive communication are vital soft skills in this role. These skills and qualities are essential for designing efficient tools that improve developer productivity, streamline workflows, and support organizational engineering goals.
Infographic showing various Internal Developer Tools Software Engineer job openings in Missouri as of June 2026, with employment types broken down into 50% Internship, and 50% Full Time. Highlights an 50% In-person, and 50% Remote job distribution.

Software Engineer, Senior

FlightSafety International

Hazelwood, MO • On-site

$113K - $149K/yr

Full-time

Posted 18 days ago


FlightSafety International rating

8.6

Company rating: 8.6 out of 10

Based on 6 frontline employees who took The Breakroom Quiz

13th of 197 rated education and training


Job description

About FlightSafety International
FlightSafety International is the world's premier professional aviation training company and supplier of flight simulators, visual systems and displays to commercial, government and military organizations. The company provides training for pilots, technicians and other aviation professionals from 167 countries and independent territories. FlightSafety operates the world's largest fleet of advanced full-flight simulators and award-winning maintenance training at Learning Centers and training locations in the United States, Canada, France and the United Kingdom.
Purpose of Position
Responsible for developing software for simulator systems. Application areas include real time simulation; simulation of aircraft systems, navigation, aircraft dynamics; simulator interoperability; simulation software integration with OEM software; simulator software system design; computer systems and information security. Intermediate Level; continuing development level. Performs more varied and difficult aspects of the job; may need guidance on job duties; apply learning to recommend options to address unusual situations. Plus Computation Fluid Dynamics
Tasks and Responsibilities
The following duties are essential to the successful and satisfactory performance of this job. Other duties may be assigned based on departmental needs.
  • Develops, supports, and maintains software components, interfaces, features, subsystems, and systems across the development cycle.
  • Apply skills in requirements identification and analysis; software design and construction; software testing and verification; problem identification and resolution; maintenance and troubleshooting; user support and multi-disciplinary team collaboration.
  • Apply skills in interpreting schematics, wiring diagrams to create software models of physical systems.
  • Uses disciplined software development methods, including construction techniques, test methodologies, configuration management, and software tools; uses and contributes to product and process management information systems and documentation.
  • Mentors and assists other software engineers.
  • Apply skills in document preparation to create customer test and internal/external user guides.
  • Apply presentation skills to demonstrate the operation of systems to internal and/or external customers.
  • Consults with other software and hardware engineers as part of a team. Communicates effectively between departments.
  • Designs prototypes for new technologies, algorithms, structures, and processes. Conducts research and development.
  • Supports computer system and hardware requirements, integration, and maintenance.
  • Develop engineering tools
  • Remains current on state-of-the-art technologies through technical papers, periodicals, and conferences.
  • Travel, shift work, and special work hours may be required to accomplish some of the above tasks.
  • Exhibits and practices professional and courteous behavior while interacting with both internal and external customers.
  • Interacts within a cooperative environment through beneficial behavior, commitment to common goals, contribution to problem solving, communication of ideas and suggestions, and encouragement to other employees and departments.
  • Accountable for the control and distribution of documents and/or equipment subject to export control restrictions or other applicable laws and regulations and the security of FSI materials, projects and business information regarding the methods and techniques used in the production and usage of FSI products.
  • Accountable for the accuracy and completeness of assigned tasks.
  • Able to adhere to a work schedule including prompt and regular attendance. Willingness to work overtime as necessary.
  • Adhere to accurate time recording of daily work activity.
  • Ability to work in a constant state of alertness and in a safe manner.
  • May be required to apply for and maintain a security clearance.

Minimum Education
  • Bachelor's Degree in Computer Science, Computer Engineering, Electrical Engineering, Mechanical Engineering, Aerospace Engineering or other applicable technical field; and two years related experience; or equivalent combination of education and experience,
  • or Master's Degree in Computer Science, Computer Engineering, Electrical Engineering, Mechanical Engineering, Aerospace Engineering or other applicable technical field preferred.

Minimum Experience
7+ years of related experience in software engineering preferred.
Knowledge, Skills, Abilities
  • Experience working in Agile, Waterfall and Hybrid environments.
  • Solid understanding of software development life cycle models.
  • Proven ability to translate requirements into test plans, cases and scripts.
  • Results Driven mindset.
  • Knowledge of Microsoft related testing tools (Azure DevOps, Visual Studio).
  • Experience using Cloud technologies (Azure DevOps).
  • Participate in the scrum process, including stands ups and related activities.
  • Successful ability to build positive partnerships and work collaboratively with cross functional business teams.
  • Excellent organizational skills, including ability to work in a fast-paced environment, multitask and prioritize workload.
  • Excellent interpersonal and communication skills with the ability to interact with all levels of the organization.
  • SDLC and test management tools: Azure DevOps, Git, etc.
  • Strong geometry and mathematics capability, Euclidean geometry, matrix algebra, vector math, calculus, differential equations.
  • bash, Power Shell, Python, Perl or other scripting experience
  • MS Visual Studio
  • Reading and using technical specifications
  • Lean/Agile Software Development

Physical Demands and Work Environment
The physical demands and work environment described here are representative of those that must be met and or encountered by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. The employee will be regularly required to sit, demonstrate dexterity to handle or feel, speak, and hear. The employee is occasionally required to stand, walk, and reach with hands and arms. The employee must occasionally lift and/or move up to 10 pounds. Specific vision abilities required close vision, distance vision, color vision, peripheral vision, depth perception and ability to adjust focus. While performing the duties of the job, the employee is occasionally exposed to moving mechanical parts and vibration. The noise level in the work environment is usually moderate.
FlightSafety is an Equal Opportunity Employer/Vet/Disabled. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or disability.
Any offer of employment is contingent upon successful completion of required compliance reviews, including verification that the candidate is not prohibited from employment under U.S. economic sanctions programs administered by the U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC).
This position may require access to export-controlled technology or services subject to the International Traffic in Arms Regulations (ITAR) and/or the Export Administration Regulations (EAR). Employment consideration and any offer of employment are contingent upon the applicant's ability to comply with these requirements, including qualifying as a "U.S. Person" under applicable regulations or otherwise eligible for export authorization within a timeframe consistent with business needs. A "U.S. Person" includes U.S. citizens, lawful permanent residents (holders of approved and unexpired green cards), and certain refugees or asylees with protected status under U.S. law.
This position may also require eligibility to obtain and maintain a U.S. Government security clearance for the duration of employment.
Cybersecurity Notice: All official recruiting communication from FlightSafety International will come from an @flightsafety.com email address. FlightSafety International will never ask for personal or financial information through social media or third-party email providers.