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Overview: SimVentions is 100% employee-owned and proudly ranked among Virginia's Best Places to Work year after year! We are actively seeking a strong junior to mid-level software developer with experience in software design, development, testing, and troubleshooting. The ideal candidate will have a solid foundation in programming principles and hands-on experience working with hardware control systems and device interfaces. Travel: 10% Clearance: An ACTIVE Secret Clearance is required for this position. Applicants selected will be subject to a security investigation and must meet eligibility... more ->
MANTECH seeks a highly experienced and mission-focused Associate CNO Software Developer to join our CNO team in Hanover, MD or Aurora, CO. As an Associate CNO Software Developer on our team, you will play a key role in developing advanced CNO capabilities that directly support national security. You'll work in a collaborative environment focused on solving complex technical challenges in support of our customer's most critical missions. Responsibilities include but are not limited to: Design and develop new hardware- or software-based CNO capabilities Assists with the design, development,... more ->
REMOTE Principal React Engineer (Software Engineer Programmer Developer ReactJS React-JS React.JS Playwright TypeScript Redux Saga Ag-Grid Fixed Income JavaScript Node Credit Rates Bonds Agile Buy Side Asset Manager Investment Management Finance Front Office Trading Financial Services UI Front End Front End EMS OMS Execution Order Management System Portfolio Banking Remote) required by our trading client in Manhattan, New York City. You MUST have the following: Strong experience as a Lead React Developer/Software Engineer/Programmer Advanced OpenFin Excellent JavaScript, TypeScript and React... more ->
Job Description: What We're Doing Lockheed?Martin is shaping the future of defense through cutting edge radar and missile defense technologies, and we want you to help write the next chapter. As the premier developer of active electronically scanned array (AESA) radars and integrated air and missile defense solutions for the U.S. military, our allies, and more than 45 nations worldwide, we deliver world class situational awareness, early warning, and kill assessment capabilities in the most demanding environments. Join a global team of 35?000 engineers, software developers, and cyber experts... more ->
MANTECH seeks a driven and mission-focused Cyber Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the Intelligence Community, helping to protect our country from emerging threats. This position offers the chance to grow your expertise alongside talented Software Developers, Data Engineers, and System Engineers while pioneering solutions that make a national impact. Responsibilities include, but are not limited to: Understand requirements and design and develop software components. Research software... more ->
Principal React Engineer (Software Engineer Programmer Developer ReactJS React-JS React.JS Playwright TypeScript Redux Saga Ag-Grid Fixed Income JavaScript Node Credit Rates Bonds Agile Buy Side Asset Manager Investment Management Finance Front Office Trading Financial Services UI Front End Front End EMS OMS Execution Order Management System Portfolio Banking Remote) required by our trading client in Manhattan, New York City. You MUST have the following: Strong experience as a Lead React Developer/Software Engineer/Programmer Advanced OpenFin Excellent JavaScript, TypeScript and React... more ->
General information Job Posting Title Back End Developer - Mid-level Date Thursday, April 23, 2026 City Remote Country United States Working time Full-time Description & Requirements Maximus is a trusted federal partner supporting mission-critical programs across national security, defense, and public service delivery. Recent contract awards in cybersecurity and operational readiness underscore Maximus' role as a reliable prime for high-impact government missions. Joining Maximus means contributing to meaningful work in fast-paced environments alongside professionals committed to service,... more ->
General information Job Posting Title Back End Developer - Mid-level Date Wednesday, February 18, 2026 City Fort Meade State MD Country United States Working time Full-time Description & Requirements Maximus is a trusted federal partner supporting mission-critical programs across national security, defense, and public service delivery. Recent contract awards in cybersecurity and operational readiness underscore Maximus' role as a reliable prime for high-impact government missions. Joining Maximus means contributing to meaningful work in fast-paced environments alongside professionals... more ->
General information Job Posting Title Back End Developer - Mid-level Date Friday, May 15, 2026 City Remote Country United States Working time Full-time Description & Requirements Maximus is a trusted federal partner supporting mission-critical programs across national security, defense, and public service delivery. Recent contract awards in cybersecurity and operational readiness underscore Maximus' role as a reliable prime for high-impact government missions. Joining Maximus means contributing to meaningful work in fast-paced environments alongside professionals committed to service,... more ->
MANTECH seeks a motivated, career and customer-oriented SIMULATION DEVELOPER to join our team in QUANTICO, VA Join a high-impact team supporting the Marine Corps Warfighting Lab's transition to digital wargaming. As a Simulation Developer, you will serve as a trusted advisor to our customers, ensuring the technical architecture of wargames is robust and reliable while directly shaping the tools used to prepare Marines for the future fight. Responsibilities include but are not limited to: Designs, develops, and sustains simulation models and environments using a variety of programming... more ->
MANTECH seeks a driven and mission-focused Cyber Software Engineer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the Intelligence Community, helping to protect our country from emerging threats. This position offers the chance to grow your expertise alongside talented Software Developers, Data Engineers, and System Engineers while pioneering solutions that make a national impact. Responsibilities include but are not limited to: Understand requirements and design and develop software components. Research software... more ->
MANTECH seeks a motivated, career and customer-oriented ETL Developer to join our team in Chantilly, VA. The ETL Developer will support mission-critical data operations by designing, building, and optimizing large-scale data ingest and processing solutions in a Big Data environment. This role focuses on enabling reliable, performant data pipelines that support analytic and operational needs across the full data lifecycle. Responsibilities include but are not limited to: Designing and implementing large-scale ingest systems in a Big Data environment Optimizing all stages of the data lifecycle,... more ->
MANTECH seeks a motivated, career and customer-oriented DevOps Developer to join our team in Herndon, VA . The DevOps Developer will perform DevOps tasks to help maintain and optimize our CI/CD pipeline and further the automation of tasks for the customer. This role supports the tuning of our environments for efficiency, performance, and scalability, while also contributing to the software development of specific features. You will help design and implement the architecture that powers the software products our team develops, leveraging proven systems design and scalability experience within... more ->