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.
NewSoftware Developer LeidosSoftware DeveloperChantilly, Virginia$154,050–$278,475 / yearMay 29, 2026 For 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.
Software Development Engineer Booz Allen HamiltonSoftware Development EngineerMcLean, VirginiaOnsite : If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role. You’ll focus on building Booz Allen’s Software-Defined Everything (SDE) platform to enable Physical AI, Edge, Trusted Environments, and other applications across mission domains to autonomously discover, provision, simulate, and deploy these systems.
Software Developer, Senior Booz Allen Hamilton Inc.Software Developer, SeniorQuantico, VA$86,800–$198,000 / yearOnsite: If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements.
Software Engineer (Tactical Decision Aids – Mid-Level) LeidosSoftware Engineer (Tactical Decision Aids – Mid-Level)Bethesda, MarylandJuly 27, 2026 For 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. Leidos’ High Fidelity Simulation Business Area designs and delivers cutting-edge system-of-systems solutions that power world-class simulation, training, and analysis products for the U.S. Navy .
Software Engineer, Data Infrastructure & Acquisition - Washington, DC, USA SpeechifySoftware Engineer, Data Infrastructure & Acquisition - Washington, DC, USAWashington, DCOver 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.
Staff Software Engineer, Endpoint Escalations (C++, Windows/OS Internals) SentinelOneStaff Software Engineer, Endpoint Escalations (C++, Windows/OS Internals)Washington, DC$156,000–$215,000 / yearYou will sit at the intersection of deep systems engineering and high-stakes customer communication, diagnosing complex, real-world failures at the code and OS-internals level, and representing SentinelOne engineering directly to customers, including senior technical and executive stakeholders, during active incidents. Partner with engineering, QA, support, and product teams to translate escalation patterns into permanent fixes, and feed field learnings back into the product roadmap.
Senior Software Engineer, FE/Mobile QXOSenior Software Engineer, FE/MobileHerndon, Virginia$138,000–$235,000 / yearFull timeQXO is North America’s largest distributor and installer of insulation, the second-largest distributor of roofing products, the second-largest publicly traded distributor of lumber and building materials, and the largest distributor of waterproofing products. This role is ideal for engineers who are passionate about building high-quality software, eager to learn, and excited to make a meaningful impact in a fast-paced environment.
Software & Platform Engineer IT Concepts IncSoftware & Platform EngineerMcLean, VA$165,000–$185,000 / yearThis role is ideal for engineers who thrive in writing code, designing, architecting, and building technical solutions, and experimenting with new technologies - while also understanding how applications operate on modern cloud platforms. Evaluate, champion, and define adoption strategies for emerging techno.logies that align innovation with enterprise architecture, security, and compliance frameworks that offer genuine competitive advantage and organizational efficiency, and drive value.
Front-end Senior Software Engineer TightFront-end Senior Software EngineerWashington, District of ColumbiaMany financial technology (FinTech) platforms are building products that leverage Tight's Embedded Accounting MCP Server, UIs, APIs and SDKs; over 1.3M users are leveraging said products. Importantly, at Tight, we are looking to utilize your existing skills to improve our Engineering operation, and then the sky's the limit responsibility/growth-wise based on where your skill development and interests lead.
Senior Software Engineer (Active Ts/Sci Clearance) StriveworksSenior Software Engineer (Active Ts/Sci Clearance)Northern Virginia, VA$185,000–$230,000 / yearSince 2018, we have delivered the most trusted AI systems operating in real-world use cases-providing a layer of assurance underneath hundreds of deployed models that monitors performance, manages drift, and sustains systems long after they leave the lab. Ability to independently lead the software development life cycle, from collaborating with product teams on requirements to executing technical design, implementation, and deployment.
AI-focused Senior Software Engineer TightAI-focused Senior Software EngineerWashington, District of ColumbiaMany financial technology (FinTech) platforms are building products that leverage Tight's Embedded Accounting MCP Server, UIs, APIs and SDKs; over 1.3M users are leveraging said products. Tight's Customer Partnerships team interfaces directly with the FinTech's product/engineering teams, soliciting and obtaining critical product feedback that drives the direction of Tight’s products.
Senior Software Engineer II (Hybrid) Kaplan, Inc.Senior Software Engineer II (Hybrid)Washington, DCHands-on experience containerizing and migrating serverless workloads (e.g., Azure Functions) to AWS using Docker and ECS/EKS, including configuration/secrets management and CI/CD-driven deployments. Convert Azure Functions code into portable, containerized services (Docker), refactoring code, externalizing config/secrets, writing build/run scripts, and deploying/debugging on AWS (ECS/EKS) through automated CI/CD.
Flight Software Engineer LynkFlight Software EngineerChantilly, VirginiaLynk’s service has been tested and proven on all seven continents, has regulatory approvals in more than 30 countries and is currently being deployed commercially based on more than 40 MNO commercial service contracts covering approximately 50 countries. You will contribute to the design, development, and testing of spacecraft flight software systems, including those that implement our spacecraft Command and Data Handling; Power; Communications; and Guidance, Navigation, and Control Systems.
AI Software Engineer, Lead Booz Allen HamiltonAI Software Engineer, LeadMcLean, VirginiaAs an engineer on our team, you have the chance to shape the development of systems across multiple defense, civilian, and space domains by supporting advanced system design, test, and evaluation by combining physics-based modeling, AI/ML techniques, autonomy, cyber, and platform engineering expertise. Onsite : If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.
Entry Level Software Developer SkillStormEntry Level Software DeveloperWashington, DCVeterans and transitioning service members: this model - structured training, a clear mission, clearance-eligible work, relocation handled - is built for the way you already operate. You''ll spend 12 weeks in paid, hands-on training working real, team-based projects - then deploy directly to an enterprise or government client, effective day one.
Software Developer CACI International IncSoftware DeveloperColumbia, MD$103,800–$218,100 / yearProvides specific input to the software components of system design to include hardware/software trade-offs, software reuse, use of Commercial Off-the-shelf (COTS)/Government Off-the-shelf (GOTS) in place of new development, and requirements analysis and synthesis from system level to individual software components. The Software Engineer develop, maintain, and enhance complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets, real-time systems, and business management information systems) based upon documented requirements.
Cloud Architect / Engineer LeidosCloud Architect / EngineerWashington, DC$131,300–$237,350Proven expertise with Generative AI infrastructure, including: Production-ready Retrieval-Augmented Generation (RAG) pipelines, Scalable vector databases (e.g., Pinecone, Weaviate, Milvus, FAISS, or managed services) with indexing, clustering, and optimized retrieval, GPU/TPU compute clusters, managed container orchestration (Kubernetes/EKS/AKS/GKE), and auto-scaling for large language model (LLM) workloads. Demonstrated experience implementing enterprise security and compliance frameworks (SOC 2, ISO 27001, HIPAA, PCI-DSS, CMMC, FedRAMP, etc.), including encryption, threat monitoring, and zero-trust architectures.
Digital Signal Processing Software Engineer Booz Allen HamiltonDigital Signal Processing Software EngineerMcLean, VirginiaOnsite : If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual’s particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements.
Software Developer Boeing Employees' Credit UnionSoftware DeveloperWashingtonYou’ll play a key role in modernizing our digital platforms by developing scalable applications, building APIs and integrations, and supporting personalized member experiences. Support Digital Transformation: Contribute to website modernization initiatives, personalization capabilities, and digital experience enhancements that improve how members interact with BECU.