8 senior software engineer jobs found

ECS is seeking a Junior Software Engineer Intern to work in our Fairfax, VA office for the summer of 2026. This internship offers a unique opportunity to move beyond the classroom and gain firsthand experience with production-grade workflows and real-world datasets. You will work alongside senior engineers and scientists to move models from research to the tactical edge, ensuring from end to end, both our warfighters & decision makers are empowered with the latest technology solutions at their fingertips. Job Description: ECS is seeking a Junior Software Engineer to participate in a team of scientists and engineers, and to support the execution of a variety of projects including Artificial Intelligence/Machine Learning and Big Data/Cloud Solutions. The candidate works closely with the Project Manager and technical team to swiftly develop solutions in an agile environment and deploy capabilities to the operational end user. The candidate cultivates an environment...

ECS is seeking a Senior Network Engineer to work remot ely. ECS is seeking a highly skilled Network Engineer to support and maintain enterprise network infrastructure across corporate office environments and three geographically distributed data centers. This role is responsible for designing, implementing, securing, and optimizing network systems that support mission-critical operations. The ideal candidate brings strong experience in multi-site networking, data center architecture, and enterprise-grade routing/switching, along with a proactive approach to reliability, security, and performance. Key Responsibilities Design, implement, and maintain network infrastructure across ECS corporate offices and data centers Manage core networking components, including routers, switches, firewalls, and load balancers Ensure high availability and performance of WAN/LAN connectivity between sites Support data center networking, including spine-leaf architecture, VLANs,...

ECS is seeking a Quality Assurance Engineer Senior to work in our Winchester, VA office. Please Note: This position is contingent upon contract award. Responsible for creating software test and automating test cases, performing application testing, validating bugs, and isolating issues; writing and initiating tests and then analyzing and reporting the test results in the ticketing system; and performing configuration management, change management, and release management

ECS is seeking a Systems Engineer Senior to work in our Winchester, VA office. Please Note: This position is contingent upon contract award. Supervise, coordinate and/or perform additions and changes to network hardware and operating systems, and attached devices, including investigation, analysis, recommendation, configuration, installation, and testing of new network hardware and software. Provide direct support in the day-to-day operations on network hardware and operating systems including the evaluation of system utilization, monitoring response time and primary support for detection and correction of operational problems. Troubleshoot at the physical level of the network, working with network measurement hardware and software, as well as physical checking and testing of hardware devices at the logical level working with communication protocols. Participate in planning design, technical review and implementation for new network infrastructure hardware and...

ECS is seeking a Data Engineer Senior to work in our Winchester, VA office. Please Note: This position is contingent upon contract award. Responsible for carrying out engineering tasks to deliver an advanced visual analytic application to include: developing data analytics for desktop and web-developed visual analytic software; facilitating the bulk analysis of relational information utilizing advanced graphics, visualization, and high-performance computing, as well as using the specified open source, COTS, and GOTS technologies; and establishing an application that produces manageable, actionable intelligence from streams of a structured and semi-structured data.

ECS is seeking a Senior Electrical Engineer to join the RPL team in Chantilly, VA . As a Senior Electrical Engineer, you will work on high performance RF systems used for Radar and Flight Termination System (FTS). Based on system requirements, you will collaborate with a multidisciplinary engineering team of RF Engineers, Mechanical Engineers, and Software Engineers, to derive solutions, perform verification testing, and troubleshoot any issues. A successful candidate will solve complex problems and complete hardware and firmware designs and perform hands on testing.

ECS is looking for a Principal Systems Engineer - Embedded Software Engineer to work Onsite in Arlington, VA. The Principal Systems Engineer will provide senior-level technical oversight, quality assurance, and lifecycle governance for embedded tactical software supporting Department of Defense and Navy weapon and combat systems. This is a principal individual-contributor role focused on reviewing, validating, and auditing embedded software and engineering decisions-not people management or day-to-day software development. The ideal candidate has deep experience in safety-critical, highly regulated environments such as missile systems, Aegis or Navy combat systems, or other real-time defense platforms, and brings the technical judgment needed to independently assess software quality, integration impacts, and engineering rigor. What You'll Do Serve as a senior technical authority on Change Control Boards (CCBs) governing embedded software updates and configuration...

ECS is seeking a Technical Program Manager to work in our Fairfax, VA or Wiesbaden, Germany office in a hybrid onsite/remote capacity with regular travel to Falls Church, VA and Ft. Meade, MD , and occasional travel to Suffolk, VA . ECS is seeking a Technical Program Manager to support robust Impact Level (IL) 5 and IL6 programs in an operational DoD environment that houses multiple U.S. Coalition Mission Partner Environments (MPE). The Technical Program Manager bridges the gap between complex engineering, business strategy, and execution. They drive the lifecycle of technical projects-from conception to deployment-by managing cross-functional dependencies, identifying risks, and ensuring technical teams build scalable solutions that align with MPE mission goals. The ideal candidate has a broad and varied technical background with a focus on cloud infrastructure and experience with DoD environments. This position is a demanding, high-energy role that requires...