Senior Transport Network Engineer Leidos Holdings IncSenior Transport Network EngineerArlington, VA$92,300–$166,850 / yearFor U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Senior Maximo Application Suite Developer/Administrator Leidos Holdings IncSenior Maximo Application Suite Developer/AdministratorReston, VARemote$116,350–$210,325 / yearPosition will be responsible for installing, supporting, and maintaining Red Hat OpenShift and MAS 9 implementations and will help automate and streamline our operations and processes, troubleshoot and resolve issues in our dev, test and production environments, gather user requirements and document functional and technical specifications, create thorough system documentation, and support team members and end users with both technical expertise and training. Necessary skills include software and systems development, test and evaluation, configuration and release management, data management, IT security, service desk, operations and maintenance functions, and supporting business process engineering services for the portfolio.
Senior DevOps Engineer Leidos Holdings IncSenior DevOps EngineerBethesda, MD$131,300–$237,350 / yearYou will work closely with a multi-disciplinary team of engineers, architects, developers, software integrators, and system administrators on the following key tasks: Deploy, triage and maintain a production big data pipeline using a microservice architecture running on Kubernetes, Elasticsearch backend, and Kafka messaging. You bring enthusiasm, the ability to work well with people from different disciplines with varying degrees of technical experience, and meet the following qualifications: BS in Engineering, Computer Science, Systems Engineering, or related field or equivalent experience with 12+ years in software development, system engineering or related field.
Sr. Software Developer Leidos Holdings IncSr. Software DeveloperGaithersburg, MD$107,900–$195,050 / yearWorking alongside software engineers, architects, DevSecOps engineers, cybersecurity professionals, and mission stakeholders, you'll develop next-generation applications that deliver mission-critical capabilities in a fast-paced Agile environment. As a Senior Software Developer, you'll play a key role in designing, developing, testing, and deploying secure, scalable applications that support enterprise and mission operations.
Senior Associate, Software Engineering 1 1 L3Harris Technologies IncSenior Associate, Software Engineering 1 1Chantilly, VA$74,500–$138,500 / yearSuccessful candidates will join a development team in Ground Software and Image Science discipline, directly supporting solutions developed by L3Harris's Space Ground Solutions (SGS) Group. Job Description: L3Harris is seeking highly skilled and motivated software engineering professionals to work in a dynamic classified environment to help us provide world class cloud solutions in support of programs that are critical to our national defense.
Senior AI Systems Architect Unissant IncSenior AI Systems ArchitectAshburn, VAThis position serves as a trusted technical advisor to leadership, program stakeholders, architects, developers, data scientists, and cybersecurity teams while driving the transition of AI capabilities from research and experimentation into production operational environments. Position Overview: The Senior AI Systems Architect leads the design of enterprise AI ecosystems and reusable AI services within the client's AI Enablement Center, enabling AI-as-a-Service capabilities across multiple applications and operational environments.
Senior Offensive Security Engineer (Red Team) Salesforce IncSenior Offensive Security Engineer (Red Team)MD$148,500–$223,900 / yearYou will work closely with the Red Team Director to design and carry out real-world adversary simulations, uncover high-impact attack paths, and validate how weaknesses can be chained to achieve meaningful attacker objectives. We are looking for a Senior Offensive Security Engineer (Red Team) with a strong, hands-on attacker mindset to execute advanced offensive security operations across our products, platforms, and enterprise environment.
Senior Machine Learning Engineer (10187) Extreme Networks IncSenior Machine Learning Engineer (10187)Washington, DCRequirements · Degree in Computer Science, Mathematics, or a related field · 5+ years of experience across the full SDLC: design, coding, reviews, testing, deployment, and operations · 5+ years of experience architecting and deploying end-to-end ML solutions in production environments · Proven expertise developing Generative AI solutions such as RAG, AI Agents, and LLM fine-tuning at scale · Strong background in building and operating large-scale distributed systems on cloud platforms such as AWS, Azure, or GCP · Demonstrated ability to solve highly complex and ambiguous problems, setting direction for others. Preferred Qualifications · MS or PhD in Computer Science, Machine Learning, or a related discipline · Experience with Graph ML and graph technologies such as GNNs or Graph RAG · Deep expertise with distributed Big Data technologies such as Spark, Flink, Kafka, PySpark, Lakehouse, Druid, Hudi, or Glue · Track record of mentoring engineers and influencing cross-team initiatives.
Senior Salesforce Developer Architect Leidos Holdings IncSenior Salesforce Developer ArchitectGaithersburg, MDRemote$107,900–$195,050 / yearThe successful candidate will serve as both a hands-on technical contributor and Salesforce solution architect, providing leadership throughout the entire software development lifecycle-from requirements analysis and solution design to development, testing, deployment, and operational support. This role is responsible for the design, development, integration, and optimization of mission-critical Salesforce solutions supporting customer relationship management (CRM), knowledge management (KM), public-facing portals, and other enterprise business functions.
Senior Systems Engineer Leidos Holdings IncSenior Systems EngineerLaurel, MD$131,300–$237,350 / yearYou will translate user and stakeholder needs into system and derived requirements, develop and evaluate architecture and design solutions, manage technical baselines and requirements changes, coordinate integration across multiple teams, and help ensure systems can be verified against established requirements. The Leidos Intel Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support Intelligence Community customers as they address evolving national security challenges.
Senior Applied Scientist Qualtrics International Inc (Inactive)Senior Applied ScientistReston, VAThey identify business needs and define strategies where Qualtrics can most benefit from AI technologies and they conduct modeling with deep expertise and rigor, including model selection, training, fine-tuning, customization, explainability, and evaluation. Mentor and grow junior scientists, drive best practices for experimentation, reproducibility, monitoring and lifecycle management, and ensure models are reliable, scalable and impactful in production.
Operations - Senior Field Coordinator Holder Construction CoOperations - Senior Field CoordinatorHerndon, VARequired: Bachelor's degree in construction management, engineering, or a related field OR 3+ years of equivalent work experience in commercial construction field supervision. Holder Construction is a nationally recognized leader in the construction industry, consistently ranked among the top firms on ENR's Top 400 Contractors list.
Sr. Specialist, IT Business Analysis (SAP Sales & Distribution) L3Harris Technologies IncSr. Specialist, IT Business Analysis (SAP Sales & Distribution)Herndon, VA$96,000–$178,000 / yearResponsibilities include: collaborating with cross-functional teams, designing and delivering innovative solutions to align with L3Harris business objectives, ensuring system stability and performance for production systems, and contributing to continuous improvement initiatives. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
Senior IT Asset Manager Leidos Holdings IncSenior IT Asset ManagerWashington, DC$130,000–$140,000 / yearKey Responsibilities: Support the full life cycle of software and hardware asset management including tracking, discovery, analyzing, reporting, compliance, upgrades, and disposal utilizing the customer organization's asset management systems. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Senior IT Development Lead KBR IncSenior IT Development LeadChantilly, VAOperating at the intersection of application development, architecture, and delivery leadership, the Senior IT Development Lead drives the successful execution of technology initiatives while promoting Agile methodologies, DevOps practices, and continuous improvement. Through internal collaboration, and with our partners and customers, we're defining tomorrow's challenges, then providing the innovative solutions to overcome those challenges, always maintaining our commitment to Zero Harm and our Sustainability Platform.
Senior AI Engineer Leidos Holdings IncSenior AI EngineerRockville, MD$131,300–$237,350 / yearFamiliarity with Azure/C2S, hardware platforms (CPUs, GPUs, FPGAs), and advanced analytical methodologies (social network analysis, supply chain analysis, NLP, classification algorithms, image processing). What You Bring: Bachelor's, Master's, or equivalent graduate degree in a quantitative or analytical field (Computer Science, Mathematics, Statistics, Engineering, Physics, Computational Social Science, etc.).
Sr. Network Implementation Engineer Leidos Holdings IncSr. Network Implementation EngineerChantilly, VA$92,300–$166,850 / yearNetwork Implementation Engineer to support computer data communications systems, in providing design specifications, testing and inspections for computer networks; plan and implementing upgrades; as well as, analyzing and organizing corresponding hardware and software combined solutions through network modeling. Must be compliant with DoD 8140 Information Assurance Technical (IAT) Level 2. Experience specific to network engineering to include Tier III or higher network operations and/or network design and implementation.
Senior Palantir Data Engineer Unissant IncSenior Palantir Data EngineerHerndon, VAThe ideal candidate is a senior data engineering leader who will own the pipeline architecture underpinning Unissant's Palantir practice, ensuring reliable, governed, and scalable data flows into Foundry for DHS mission clients. Communication Skills: Excellent verbal and written skills, ability to present proposals and performance data, comfortable interfacing all levels of organization.
Senior Software Engineer / Data Scientist (Training Systems) Leidos Holdings IncSenior Software Engineer / Data Scientist (Training Systems)Chantilly, VA$154,050–$278,475 / yearBachelors degree in Computer Science, Data Science, Software Engineering, Mathematics, Engineering, or related technical field with 8+ years of relevant experience and 15+ years overall experience; additional experience may be considered in lieu of degree. Familiarity with contemporary AI coding ecosystems and developer productivity tools such as Claude Code, OpenAI Codex, Cursor, OpenCode, GitHub Copilot, or similar platforms.
Senior Site Reliability Engineer - CTJ - Top Secret Microsoft CorpSenior Site Reliability Engineer - CTJ - Top SecretReston, VA$119,800–$234,700 / yearAre you interested in working on cutting-edge cloud security products Would you like to be part of one of the world's most advanced cyber-security solutions and protect millions of computers from thousands of active attack attempts, every month Look no further than the Microsoft Defender engineering team. You will operate our production services, and work closely with other engineering teams to ensure services and systems are highly stable, meet performance SLAs, and meet the expectations of Internal and external customers and users.