Principal Software Engineer for Integration and Testing

Systems Technology Research’s Systems Development Division (SDD) builds integrated systems that support national security. These systems help shape strategic decisions and operations by providing reliable and complex technology solutions. SDD oversees every stage of the solution lifecycle, from early concepts and architecture through to deployment. The team focuses on advanced airborne and space RF sensor programs, as well as operations using multifunctional, multimodal technology. Role overview This Senior Software Engineer position centers on developing C++ software for embedded radar systems. The primary focus is on Air-to-Air applications, where technical depth and attention to detail are essential. What you will do Design, develop, and test software for complex embedded radar systems Work primarily with C++ as the core programming language Contribute to projects involving advanced airborne and space RF sensors Location This role is based in Dayton, OH.

Join the innovative team at Systems Technology Research as a Senior Software Engineer, where you'll play a crucial role in shaping software solutions that drive performance and efficiency. In this dynamic position, you'll collaborate with cross-functional teams to design, develop, and implement high-quality software solutions that meet our clients' needs.Your expertise will help guide the technical direction of projects, and your contributions will be instrumental in enhancing our software capabilities. If you are passionate about technology and thrive in a fast-paced environment, we encourage you to apply.

Join our dynamic team at Systems Technology Research as a Senior Software Engineer specializing in Integration and Testing. You will play a pivotal role in developing and enhancing our software solutions, ensuring quality and reliability through rigorous testing and integration processes. Collaborate with cross-functional teams to address complex technical challenges and contribute to the growth of cutting-edge technologies. If you are passionate about software engineering and thrive in a fast-paced environment, we want to hear from you!

Systems Technology Research (STR) is hiring a Lead Model-Based Systems Engineer (MBSE) in Dayton, OH. This role centers on supporting Department of Defense (DoD) mission areas by applying model-based systems engineering methods throughout the Systems Engineering Lifecycle. Role overview The Lead Model-Based Systems Engineer guides projects from requirements analysis through system and software development, ensuring architectural integrity and traceability up to production deployment. This position works within STR's Systems Development Division, collaborating with experts from engineering, computer science, mathematics, physics, and data science to address national security challenges. What you will do Apply a rigorous MBSE approach to support the development of advanced DoD systems Reverse engineer and manage complex software systems Use Digital Engineering and MBSE tools to meet program objectives Guide projects through the full Systems Engineering Lifecycle Integrate model-based requirements management and traceability with agile software development practices Requirements Strong background in system architecture Comprehensive experience across the Systems Engineering Lifecycle Deep understanding of Systems Engineering principles Experience with Modeling and Simulation Proven ability to manage software-based systems Interest in professional growth and knowledge sharing This position suits Systems Engineers with a software focus who want to advance MBSE practices as STR continues to adopt agile methodologies.

SciTec, a wholly owned subsidiary of Firefly Aerospace, is an innovative defense contractor dedicated to delivering cutting-edge technologies that bolster U.S. National Security and Defense. With over 45 years of experience, we have supported Department of Defense clients by developing pioneering remote sensing algorithms, tools, and techniques that facilitate world-class data exploitation capabilities essential for missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability missions.Important Notice: Due to the nature of our work, SciTec exclusively engages in U.S. government contracts, necessitating U.S. citizenship for all employees. We are unable to sponsor or assume sponsorship for any employee work visas. U.S. citizenship is also required to obtain and maintain a security clearance. Candidates who do not meet these criteria will not be considered.We are looking for a Senior Software Engineer to lead the design, development, and maintenance of high-quality software systems that support advanced analysis and data processing workflows. This position emphasizes distributed systems, microservices, and real-time data pipelines while collaborating closely with scientific and technical users in a mission-oriented setting.The ideal candidate will be a strong individual contributor, possessing substantial expertise in C++, C#, Java, JavaScript, or Python, sound software engineering judgment, and the ability to collaborate across various disciplines while influencing technical direction through mentorship and exemplary practice.

SciTec, a wholly owned subsidiary of Firefly Aerospace, stands at the forefront of innovative technology as a non-traditional defense contractor committed to enhancing U.S. National Security and Defense. Over the past 45 years, we have collaborated with Department of Defense clients to craft cutting-edge remote sensing algorithms, tools, and techniques that provide exceptional data exploitation capabilities for missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability missions.Important Notice: As SciTec operates exclusively on U.S. government contracts, all employees must be U.S. citizens. We cannot sponsor or assume sponsorship for any employee work visas. Additionally, U.S. citizenship is necessary to obtain and maintain a security clearance. Applicants who do not meet these criteria will not be considered.We are looking for a Senior Staff Software Engineer who will play a pivotal role in designing, developing, and maintaining high-quality software systems that support sophisticated analysis and data processing workflows. This position emphasizes distributed systems, microservices, and real-time data pipelines, requiring close collaboration with scientific and technical users in a mission-critical environment.The ideal candidate will be a strong individual contributor with extensive expertise in C++, C#, Java, JavaScript, or Python, possess sound software engineering judgment, and demonstrate the ability to work collaboratively across disciplines while guiding technical direction through mentorship and example.

Role overview Speechify is hiring a Senior Software Engineer to focus on Windows and desktop application development. This position centers on designing, building, and refining software that shapes how users experience Speechify’s products. Collaboration is key in this role. The engineer will work alongside teams from different specialties to deliver applications that are reliable and meet genuine user needs. What you will do Design and develop desktop applications for Windows platforms Refine existing software to improve user experience and performance Collaborate with cross-functional teams to ensure high-quality releases Location This position is based in Dayton, OH, USA.

Join our innovative team as a Software Engineer III specializing in Navigation at AEVEX Aerospace, with opportunities to work from our Tampa, Florida or Dayton, Ohio offices. In this vital role, you will design, develop, and test cutting-edge software applications tailored to meet user requirements. Collaborating closely with a talented software development team, you will leverage your expertise in programming languages and software development methodologies to create efficient and functional solutions. Key Responsibilities: Develop Embedded Linux and microcontroller software applications using C/C++, with occasional use of other programming languages. Innovate new features in Navigation, Autonomy, Sensor Fusion, and Collaboration within our software products. Integrate advanced technologies such as ROS1/2 and Docker into our software platforms. Utilize middleware like ROS1/2 to implement modular system architectures. Employ Docker for building and deploying containerized applications in embedded systems. Engage in code reviews, merging processes, and configuration management. Oversee software design, testing, and maintenance using advanced programming techniques and standards. Conduct alpha and beta testing of new or modified applications, adhering to industry best practices. Evaluate technological advancements in hardware, software, and telecommunications for relevance to current and future projects. Analyze user requirements to inform software design and performance criteria. Adhere to established standards, processes, and tools throughout the software development lifecycle to promote code reuse. Contribute throughout the entire software development process, including requirements gathering, design, implementation, testing, debugging, and deployment. Perform additional duties as assigned. Standard Responsibilities: Maintain regular and reliable attendance, adhering to the established schedule. Exhibit professional behavior that positively reflects on the company and aligns with our policies and practices. Embody AEVEX’s cultural values, aligning daily actions with departmental goals and overall company culture.

Role Overview Credence Management Solutions, LLC is hiring a Software Sustainment / Software Engineer in Dayton, Ohio. This role supports the engineering team by developing and maintaining software systems. The position focuses on improving existing software and ensuring long-term reliability.

Join our dynamic team at Systems Technology Research as a Lead Software Engineer. In this pivotal role, you will drive software development initiatives, overseeing the design, implementation, and maintenance of innovative software solutions. Your leadership will inspire a team of talented engineers, ensuring best practices in coding and project management are upheld. Collaborate closely with cross-functional teams to deliver high-quality products that meet our clients' evolving needs.

Systems Technology Research (STR) is hiring a Principal Model-Based Systems Engineer (MBSE) for its Dayton, OH office. This position focuses on advancing Department of Defense (DoD) projects through model-based and digital engineering methods. Role overview The Principal MBSE Engineer leads teams across the Systems Engineering Lifecycle, with a strong focus on digital engineering and MBSE practices. Collaboration with experts in sensor development and cybersecurity is central to this role, as is the implementation of MBSE tools and techniques. Key responsibilities Model systems using SysML and guide teams in customizing automation with Cameo to meet DoD Digital Engineering requirements. Mentor junior staff and help grow the organization’s expertise in MBSE and digital engineering. Support adoption of agile strategies that integrate model-based requirements management and traceability within software development. Requirements Extensive experience leading teams in systems engineering, system architecture, and the full Systems Engineering Lifecycle. Strong background in MBSE, digital engineering, and modeling and simulation. Proficiency with SysML and Cameo. Experience with programming languages such as C/C++, Java, or Python is highly desirable. Interest in mentoring and developing junior engineers. This role is particularly well-suited for systems engineers with a software development background who want to advance MBSE practices in DoD programs.

Join Our Team at Istari DigitalAt Istari Digital, we are at the forefront of transforming engineering through innovative digital solutions. As a pioneering digital engineering software company, we empower our customers to seamlessly integrate their physical and digital worlds, achieving their unique business goals.Founded with the ambition to create open, scalable digital engineering ecosystems, Istari Digital is dedicated to enabling the development of advanced technologies and systems without the traditional constraints of time and costs. We are crafting the premier model-sharing platform in engineering, ensuring that our clients can integrate their models effortlessly across various disciplines and organizations.We are passionate about our mission to build the world's first open industrial metaverse. Our solutions assist clients in prototype design, virtual testing, and training AI and autonomy for intricate systems, ultimately saving them time and resources while minimizing their environmental footprint.Although our team operates remotely, we prioritize collaboration and connection through in-person gatherings, fostering trust and teamwork. Our engineering headquarters in Cambridge, MA serves as a hub for focused technical development, and we regularly organize off-site meetings to enhance our professional skills and strengthen team relationships.Our ValuesFocus is rewarded. Completion is valued.Facts are constructive, even when challenging.Fellowship is vital. We strive to make others successful.We are an Equal Opportunity/Affirmative Action Employer, welcoming applicants from diverse backgrounds without discrimination based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veteran status, or disability.

Role overview The Systems Engineer at agecareers plays a key part in shaping and supporting the technical foundation of the organization. Based in Dayton, OH, this role centers on designing, implementing, and maintaining complex systems to ensure stable and efficient operations. What you will do Create and deploy system solutions tailored to business requirements Monitor and maintain systems to uphold performance and reliability Collaborate with teams from various departments to enhance system architecture Offer ideas and suggestions to support technical improvements and foster innovation Location This position is located in Dayton, OH. Onsite presence is expected.

SciTec, a dynamic and innovative defense contractor under the umbrella of Firefly Aerospace, has been at the forefront of delivering cutting-edge technologies that bolster U.S. National Security and Defense for over 45 years. Our commitment to excellence is evident in our support for Department of Defense clients, where we develop pioneering remote sensing algorithms and tools that enable world-class data exploitation capabilities in missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability missions.We are on the lookout for talented Staff and Senior Full Stack Developers to join our team in support of the National Air and Space Intelligence Center (NASIC). Your role will be pivotal in driving the digital transformation initiatives of the Air Force. We value strong problem-solving abilities and critical thinking skills in our ideal candidates.

Role Overview Speechify is hiring a Software Engineer to work on the iOS Core Product in Dayton, OH. This position centers on building and improving mobile features that make the app smoother and more engaging for users. The work supports both product growth and usability. What You Will Do Develop and refine core features for Speechify’s iOS application Work closely with engineers, designers, and product managers to deliver updates and new functionality Focus on creating mobile experiences that are intuitive and efficient

A dynamic and expanding organization within the aerospace and defense sector is on the lookout for a proactive Supplier Development Engineer. This role is pivotal in enhancing supplier performance, ensuring quality, and driving process improvement initiatives. Perfect for an early-to-mid career engineer, this position offers a unique opportunity to cultivate expertise in supplier management, manufacturing processes, and quality systems. The successful candidate will collaborate closely with suppliers and internal cross-functional teams to address technical challenges, streamline processes, and guarantee that products comply with quality and regulatory standards. This role is hands-on and presents significant opportunities for professional growth and technical skill enhancement.

About Our Team: The Electronic Warfare and Novel Capabilities Group (EWNC) at Systems Technology Research is dedicated to the development and delivery of innovative signal processing algorithms and prototype systems tailored for next-generation radar and electronic warfare technologies. Our group nurtures a dynamic culture of innovation and collaboration, engaging in cutting-edge research while partnering with engineers across various departments and academic institutions to create practical and impactful solutions to complex RF sensing and counter-sensing challenges. If you are eager to leverage your extensive technical expertise and creativity for meaningful contributions, we welcome you to explore this opportunity with us. The Role: As a Principal Engineer, you will spearhead the creation of groundbreaking algorithms and strategies for sensor decision-making, encompassing areas from signal detection and classification to electronic support measures, cognitive electronic warfare, and beyond. Your leadership will guide project initiatives, proposal efforts, and interdisciplinary teams across multiple STR campuses. You will work closely with clients to comprehend their missions and develop tailored program plans that address their current and future requirements. Key Responsibilities: Collaborate directly with customers to assess their specific requirements and national security needs, shaping our solutions to align with their objectives. Lead projects and multi-disciplinary teams, providing guidance and support. Design and implement advanced signal processing and machine learning techniques to tackle intricate radar and RF sensing challenges. Drive business development efforts and contribute to proposal writing, playing a pivotal role in defining the future trajectory of our projects and organization.

Speechify’s mission is to remove barriers to reading and open up learning for all. Over 50 million people use Speechify’s text-to-speech tools to turn any reading material, PDFs, books, Google Docs, news, or websites, into audio. Users can listen, learn, and retain information more easily. The product suite includes iOS, Android, Mac, Chrome extension, and web apps. Speechify was recently named Chrome Extension of the Year by Google, and received Apple’s 2025 Design Award for Inclusivity. The team is fully remote, with nearly 200 professionals from around the world. Colleagues include frontend and backend engineers, AI research scientists, and specialists from Amazon, Microsoft, Google, Stanford, Stripe, Vercel, and Bolt. Role overview Based in Dayton, OH, the Platform Software Engineer joins the team responsible for all backend services. This includes payments, analytics, subscriptions, new product features, text-to-speech capabilities, and external APIs. This position suits engineers who enjoy making product decisions that directly impact users, thrive in change, and focus on delivering excellent user experiences. Speechify values technical excellence, initiative, and a strong work ethic. The culture is flat, engineers are trusted with leadership and ownership. What you will do Design, build, and maintain APIs, including public text-to-speech APIs and internal APIs for payments, subscriptions, authentication, and usage tracking. Oversee the backend API ecosystem, with attention to performance and maintainability. Collaborate on B2B solutions, with a focus on customization and integration for enterprise clients. Work alongside cross-functional teams to ensure backend architecture supports product strategy and enhances the user experience. Interview process The process includes several technical interviews, typically completed within one week.

We are seeking a motivated and enthusiastic Entry Level Software Engineer to join our dynamic team. The ideal candidate will possess strong skills in C++, SQL, and Oracle, and will be eager to contribute to innovative projects. If you are passionate about software development and looking to kickstart your career in a supportive environment, we want to hear from you!