Software Engineer Ardent Principles, Inc.Software EngineerChantilly, Virginia$130,000–$260,000 / yearWe have an immediate need for a mission‑driven Software Engineer who thrives in modern Lean Agile environments and enjoys building high‑impact capabilities that blend cloud engineering, scalable search, and LLM‑powered workflows. Who We Are : Ardent Principles delivers cutting‑edge capabilities across data science, data engineering, software engineering, AI solutions, cybersecurity, staff augmentation, and IT program management.
NewAssociate Software Engineer Constellation IncAssociate Software EngineerWashington, DC, DCRemoteFull timeConstellation is seeking an Associate Software Engineer with full-stack development experience, including building modern user interfaces in React and developing reliable backend services using Java, Spring Boot, or comparable frameworks. 2 - 5 years of professional experience in software development, with a proven ability to work in frontend frameworks like React and backend ecosystems such as Java/Spring, C#/.NET, or similar enterprise-grade languages.
Senior Software Engineer - Middleware & Integration Stand TogetherSenior Software Engineer - Middleware & IntegrationArlington, VirginiaProven experience with both relational (SQL) and NoSQL databases — able to design schemas, optimize queries, manage multi-environment deployments/backups/scaling, and with hands-on operational MongoDB experience (replication, sharding, performance tuning) preferred. The Senior Software Engineer will combine hands-on development with architectural oversight, ensuring the reliability, performance, and long-term scalability of our digital ecosystem while mentoring engineers and partnering cross-functionally to deliver high-impact solutions.
Senior Full-Stack Software Engineer - Front-End Focused Stand TogetherSenior Full-Stack Software Engineer - Front-End FocusedArlington, VirginiaStand Together is a philanthropic community that helps America’s boldest changemakers tackle the root causes of our country’s biggest problems, from education to the economy, broken communities, and toxic division, among dozens of other pressing issues . As a Senior Full-Stack Software Engineer (Front-End Focused) on our Enterprise IT team, you will own the design implementation for the consumer-facing web applications that serve as the front door to Stand Together's philanthropic community.
Digital Signal Processing Software Engineer - R115 Expedition TechnologyDigital Signal Processing Software Engineer - R115Herndon, Virginia5+ years of demonstrated experience creating, developing, and implementing DSP solutions in support of IC and DoW needs in on premises, hybrid on-premises/cloud, and pure cloud processing platforms. We’re looking for team members who are: Intellectually curious and are stimulated by researching and developing new and advanced techniques and technologies in the areas of digital signal processing and machine learning.
Software Engineer: Front End - R128 Expedition TechnologySoftware Engineer: Front End - R128Herndon, VirginiaAt EXP, you will experience the full lifecycle of modern software development; from Agile scrum meetings, designing new features, developing new capabilities using the latest open-source frameworks, to directly working with end-users to ensure we are solving their mission needs, and maintaining the operational system. You will also integrate front-end components with backend systems to enable seamless data flow, and contribute to product quality through unit testing, automated testing, and end-to-end validation.
Backend Software Engineer teKnoluxionBackend Software EngineerGaithersburg, MarylandFull timeBcore accelerates decisive advantage for warfighters and intelligence professionals by fusing human insight, rapid-fire engineering, precision-measured outcomes, and relentless grit into mission-ready solutions. Data Source Integration Coordination: Coordinate with external teams to understand data sources, interfaces, and access patterns, and translate requirements into backend integrations.
NewGPU Programming Software Engineer Expert - Remote YO AI LabsGPU Programming Software Engineer Expert - RemoteWashington D.C., DCRemoteWe are seeking experienced GPU Programmers / Software Engineers to design and optimize GPU-based tasks for AI and LLM applications. You will apply your expertise in GPU programming, performance optimization, and C++ development to build high-performance solutions.
NewMachine Learning Senior Software Engineer Akamai Technologies, Inc.Machine Learning Senior Software EngineerWashington, DC$121,400–$218,600 / yearAs a Machine Learning Senior Software Engineer, you will be responsible for: + Developing and maintaining model validation and security scanning pipelines that assess models for quality, correctness, and vulnerabilities prior to deployment. For US based candidates only - the base salary for this position ranges from $121,400 - $218,600/year; a candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, certifications and location.
Senior Software Engineer - JobID-0208 Innovative Defense TechnologiesSenior Software Engineer - JobID-0208Arlington, Virginia$135,000–$273,000 / yearAssure Quality: Maintains a focus on quality that produces deliverables that meet objectives and align needs, uses, and acceptance requirements set forth by relevant stakeholders Lead design and code reviews, providing constructive feedback to peers. About The Role: Innovative Defense Technologies (IDT), a leading defense technology company, is seeking a Senior Software Engineer to be part of our Engineering team and based out of our Arlington, VA or Mount Laurel NJ location.
Software Engineer - JobID-0207 Innovative Defense TechnologiesSoftware Engineer - JobID-0207Arlington, Virginia$90,000–$184,000 / yearAssure Quality: Maintains a focus on quality that produces deliverables that meet objectives and align needs, uses, and acceptance requirements set forth by relevant stakeholders Participate in and provide feedback in design and code reviews. About the Role: Innovative Defense Technologies (IDT), a leading defense technology company, is seeking a Software Engineer to be part of our Engineering team and based out of our Arlington, VA, Mount Laurel, NJ, or San Diego, CA location.
Water/Wastewater Engineer - Mid Level Whitman, Requardt & Associates, LLPWater/Wastewater Engineer - Mid LevelFairfax, VA$140,000–$215,000 / yearFull timeResponsibilities will include water and sewer pipeline design, modeling and rehabilitation, water and wastewater facility evaluation and design, utility relocation services and construction administration. The specific compensation offered to a candidate may vary based on factors including, but not limited to, the candidate’s relevant knowledge, training, skills, work location, and/or experience.
GPU Software Engineer Leidos Holdings Inc.GPU Software EngineerArlington, VA$107,900–$195,050 / yearThese teams are made up of other software team members and subject matter experts from the areas of systems engineering, hardware, firmware, machine learning, RF front end design, and signal processing. Achieving key project/program objectives and deliverables for entire projects or processes spanning multiple technical areas and independently managing large projects or processes.
Senior Software Engineer (Full Stack), Intelligence Systems ANDURIL INDUSTRIESSenior Software Engineer (Full Stack), Intelligence SystemsReston, VA$191,000–$253,000 / yearThis third-party service provider provides risk-intelligence services that may include analysis of sanctions and watchlists, adverse media, public-record information, and other lawful open-source or commercial data sources. To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process.
Senior Software Engineer (Remote Sensing) UmbraSenior Software Engineer (Remote Sensing)Reston, VARemote$155,000–$185,000 / yearUmbra’s ecosystem operates through three business units: Remote Sensing (the data), Space Systems (the components), and Mission Solutions (the platforms).Together, our teams develop capabilities that deliver persistent access, resilient performance, and mission-ready solutions, advancing U.S. space leadership while keeping the world safe and informed. This engineer will contribute to software systems across our mission planning, scheduling, command, control, and communications domains, partnering with product owners and multidisciplinary engineering teams to develop and operate the services that enable spacecraft operations at scale.
Senior Software Engineer Hawkeye360Senior Software EngineerHerndon, VAHawkEye 360 is looking for a candidate with good technical leadership and problem-solving skills, who is creative and has a passion for working with and developing new innovative technology. The mission of the Ground Systems Team is to provide the tooling to operate and maintain a growing constellation of small commercial satellites.
Staff Software Engineer ANDURIL INDUSTRIESStaff Software EngineerWashington, DC$220,000–$330,000 / yearPartner across MES product teams - integrate QualityOS into cohesive manufacturing experiences, evolve data models across quality/production domains, and drive technical consensus on cross-cutting concerns. To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process.
Sr AI Software Engineer IQUASAR LLCSr AI Software EngineerSterling, VARemoteFull timeDeveloping software solutions by studying information needs, conferring with users, studying systems flow, data usage, and work processes; investigating problem areas; and following the software development lifecycle. Developing software solutions by studying information needs, conferring with users, studying systems flow, data usage, and work processes; investigating problem areas; following the software development lifecycle.
Senior Software Engineer (Order And Delivery) - (10 Years Exp) UmbraSenior Software Engineer (Order And Delivery) - (10 Years Exp)Reston, VA$180,000–$220,000 / yearUmbra’s ecosystem operates through three business units: Remote Sensing (the data), Space Systems (the components), and Mission Solutions (the platforms).Together, our teams develop capabilities that deliver persistent access, resilient performance, and mission-ready solutions, advancing U.S. space leadership while keeping the world safe and informed. About the Job We are actively seeking a highly skilled and experienced Senior Software Engineer to join our Order & Delivery team who will play a pivotal role as a key contributor to our dynamic public-facing software application and robust API services.
Software Engineer (Active Clearance), Intelligence Systems ANDURIL INDUSTRIESSoftware Engineer (Active Clearance), Intelligence SystemsReston, VA$166,000–$220,000 / yearThis third-party service provider provides risk-intelligence services that may include analysis of sanctions and watchlists, adverse media, public-record information, and other lawful open-source or commercial data sources. To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process.