Senior Scientific Software Engineer – AWS/Python Executive RecruitingSenior Scientific Software Engineer – AWS/PythonGreenbelt, MDSelect Source Solutions is seeking an experienced Senior Scientific Software Engineer – AWS/Python to design, develop, and optimize cloud-based software solutions that support scientific data processing, large-scale data management, and application modernization. In this role, you will work closely with scientists, software engineers, cloud architects, and system administrators to build reliable, scalable solutions using Python, AWS, CI/CD, and modern cloud technologies.
Associate Software Engineer - Arlington, VA CoStar GroupAssociate Software Engineer - Arlington, VAArlington, Virginia$100,000–$105,000 / yearWorking alongside talented teammates, you'll gain hands-on experience with modern technologies including but not limited toleading JavaScript programming language and frameworks such as React, Vue, and Angular, Typescript, backend development language. Exposure to programming languages, databases, cloud concepts, AI/machine learning, frameworks, or other technical tools through coursework, projects, internships, or personal learning.
Sr Staff Software Engineer - (Platform Engineering /Distributed Systems) *Hybrid* Geico InsuranceSr Staff Software Engineer - (Platform Engineering /Distributed Systems) *Hybrid*Bethesda, MD$115,000–$260,000 / yearContribute directly to and leading by example in day-to-day engineering activities (writing feature code and automated tests, raising PRs and reviewing peers' PRs, developing and managing CI/CD pipelines, production support, among others). Provide thought leadership in GIA Platform, staying ahead of industry trends and emerging technologies to create effective strategy that minimizes business disruption while balancing the modernization of legacy platform components.
Lead Software Engineer (Sail) AppianLead Software Engineer (Sail)Mclean, VA$150,000–$300,000 / yearGrowth Opportunities: Appian provides a diverse array of growth and development opportunities, including our leadership program tailored for new and aspiring managers, a comprehensive library of specialized department training through Appian University, skills based training, and tuition reimbursement for those aiming to advance their education. These groups help employees build stronger internal and external networks by planning social, educational, and outreach activities to connect with Appianites and larger initiatives throughout the company.
Software Engineer GRVTYSoftware EngineerColumbia, MD$105,600–$201,290 / yearExperience with Next-Gen Coding Agents: Proven track record of integrating advanced AI agents, specifically Claude Code or Google's Antigravity / Gemini agentic workflows, into your daily software engineering routine. Context & Workflow Management: Ability to guide AI agents through complex, multi-repository application architectures, managing context efficiently and critically auditing agent-generated code for security, performance, and architectural alignment.
Lead Software Engineer ROY Jorgensen Associates IncLead Software EngineerWashington, DCRemoteThis role owns the architecture and end-to-end delivery of a three-layer geospatial (Esri ArcGIS), work-management, and agentic-AI platform, operating as part of a small, AI-native engineering team in which each engineer is equipped with AI coding tools as a force-multiplier rather than a side tool. The position requires performing a wide range of responsibilities related to software architecture, full-stack development, cloud infrastructure, data and system integration, security, and production support for enterprise applications that serve the Firm's highway and infrastructure maintenance operations.
Senior Software Engineer, Front End, Public Sector GoogleSenior Software Engineer, Front End, Public SectorReston, VAWe're looking for engineers who bring fresh ideas from all areas, including information retrieval, distributed computing, large-scale system design, networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile; the list goes on and is growing every day. We focus on helping United States public sector institutions accelerate their digital transformations, and we continue to make significant investments and grow our team to meet the complex needs of local, state and federal government and educational institutions.
Senior Software Engineer Mastercard IncSenior Software EngineerArlington, VA$132,000–$212,000 / yearAll activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must: Abide by Mastercard's security policies and practices; Ensure the confidentiality and integrity of the information being accessed; Report any suspected information security violation or breach, and. Overview: Mastercard's Corporate Solutions organization is seeking a Senior Software Engineer with strong expertise in Java, Spring Boot, microservices, and AI-assisted software development to help build and evolve a global business-to-business (B2B) technology platform.
Software Engineer II TheIncLabSoftware Engineer IIMcLean, VA$95,000–$125,000 / yearWe engineer complex, integrated solutions that combine cutting-edge AI technologies with emerging systems-of-systems to solve some of the most difficult challenges in the defense and aerospace industries. TheIncLab engineers and delivers intelligent digital applications and platforms that revolutionize how our customers and mission-critical teams achieve success.
Software Engineer III TheIncLabSoftware Engineer IIIMcLean, VA$125,000–$155,000 / yearWe engineer complex, integrated solutions that combine cutting-edge AI technologies with emerging systems-of-systems to solve some of the most difficult challenges in the defense and aerospace industries. TheIncLab engineers and delivers intelligent digital applications and platforms that revolutionize how our customers and mission-critical teams achieve success.
Advanced Software Engineer Bright Vision TechnologiesAdvanced Software EngineerSterling, VARemoteFull timeIn this role you will work closely with cross-functional partners — product, design, engineering, operations, and business stakeholders — to translate ambiguous requirements into well-engineered solutions, and will be expected to raise the bar through code review, design review, and mentorship of more junior engineers. We are seeking an experienced Advanced Software Engineer to provide deep technical leadership across multiple teams and drive the design and execution of complex, cross-cutting engineering initiatives.
Senior Software Engineer – Full Stack CACISenior Software Engineer – Full StackAnnapolis Junction, Maryland$131,800–$290,000 / yearPay Range : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Job Title: Senior Software Engineer – Full StackJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee Type: RegularPercentage of Travel Required: NoneType of Travel: None* * * The Opportunity .
Senior Software Engineer - JobID-0018 INNOVATIVE DEFENSE TECHNOLOGIESSenior Software Engineer - JobID-0018Arlington, VA$135,000–$273,000 / yearAbout The Role: Innovative Defense Technologies (IDT), provider of cutting-edge cloud-based integration, automated testing and data analysis for complex, mission-critical systems in the US Department of Defense (DOD), is seeking a Senior Software Engineer to be part of our Advanced Capabilities team and based out of our Arlington, VA location. What You Will Do: Support full development lifecycle including system design, implementation, integration, test, and deployment of complex systems supporting DoD and Navy operational.
Senior Java Software Engineer Leidos Holdings IncSenior Java Software EngineerAnnapolis Junction, MD$131,300–$237,350 / yearWorking alongside experienced software engineers, you'll develop Spring Boot services, build RESTful APIs, optimize relational databases, and contribute to Kubernetes deployments and CI/CD automation. If you're passionate about backend engineering, modern Java development, scalable architectures, and continuous improvement, you'll find challenging technical work, a collaborative engineering culture, and the opportunity to make a meaningful impact.
NewSoftware Engineer - Kubernetes/DevSecOps CACISoftware Engineer - Kubernetes/DevSecOpsHanover, Maryland$113,200–$237,800 / yearJob Title: Software Engineer - Kubernetes/DevSecOpsJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Local* * * Job Description: Software Engineer Level 3 – MWIII Bridge (Hanover, MD). Core tasks include program management, mission support, software integration and development, systems engineering, migration, testing, documentation development, network and system monitoring, configuration control, and release management.
JR Software Engineer KBRJR Software EngineerChantilly, VA$94,300–$115,200 / yearBA/BS in Computer Science, Software Engineering or related field and 0-3 years of related experience, or AA in related field and 3 years of related experience; in lieu of formal education, 10 years of related experience; specific contract requirements regarding education and experience will prevail. As stewards of critical missions for the Department of Defense, Intelligence Community, NASA, and other key federal entities, we excel in engineering, logistics, operations, science, program management, mission IT, and cybersecurity.
Full Stack Software Engineer ANDURIL INDUSTRIESFull Stack Software EngineerWashington, DC$132,000–$198,000 / yearLead the development of prototypes to demonstrate advanced concepts in areas like autonomous and multi-agent systems, GenAI, advanced data analytics, quantum computing/sensing/networking/comms/machine learning, modeling, simulation, optimization, visualization, next-gen human-machine interfaces, heterogenous computing, and cybersecurity. unsupervised learning, regression, classification, clustering, deep learning neural networks, NLP, LLMs, SLMs, model fine-tuning, prompt engineering, RAG) and hands-on experience developing (Gen)AI-enhanced applications or services.
CNO Focused Sr. Software Engineer Set of XCNO Focused Sr. Software EngineerAnnapolis Junction, MD$120,000–$247,000 / yearSoftware Engineer will be supporting analysts and operators in multiple product groups by designing, developing, and integrating tools to automate data collection, analysis, and presentation. With a shared desire to give back, grow the community, and do great work, the Set of X team is building an elite group of engineers with a strong sense of shared responsibility and ownership.
Software Engineer Addx CorpSoftware EngineerWashington, DCThe ideal candidate will have experience developing, testing, and maintaining software solutions that enhance command, control, communications, intelligence, and networking capabilities for the United States Air Force. We are seeking a skilled Software Engineer to join our team supporting MAJCOM and C3I&N initiatives within Airforce Systems.
Tracking Software Engineer, Space ANDURIL INDUSTRIESTracking Software Engineer, SpaceWashington, DC$166,000–$220,000 / yearYou will design and implement multi-target tracking systems using advanced state estimation and data association techniques, develop physics-based models to validate performance, and work closely with software teams to deploy your algorithms into operational systems. We're developing fully integrated hardware and software systems, including Lattice for Space Missions and modular payloads, to address growing threats in space and ensure our Guardians maintain a decisive advantage in this contested war-fighting domain.