Senior Software Engineer Chenega CorporationSenior Software EngineerArlington, VAWe are seeking a highly skilled and experienced Senior Software Engineer to contribute to the design and development of scalable classified/unclassified systems and deliver high-quality software products. In-depth understanding of networking requirements, network hardening, and networking systems such as routers, switches, and network taps.
Full Stack Software Engineer Unissant IncFull Stack Software EngineerHerndon, VAThis individual is energized by solving real mission problems, collaborating with project managers and stakeholders, and delivering secure, well-documented software that makes complex programs easier to understand, manage, and improve. The ideal candidate is a versatile software engineer who enjoys building modern, user-friendly applications and turning data into meaningful insights through dashboards, visualizations, SharePoint solutions, and PMO-support tools.
Software Engineer IQUASAR LLCSoftware EngineerWashington, DCFull timeDesign, develop, test, document, and maintain software or systems to include requirements documentation, design documentation, configuration documentation, test documentation, training materials, and user manuals. The Software Engineer shall have: Bachelor’s degree or equivalent experience in a relevant field, i.e., engineering, computer science, or information sciences.
Senior Ground Software Engineer, Space ANDURIL INDUSTRIESSenior Ground Software Engineer, SpaceChantilly, VA$191,000–$253,000 / yearWe'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 warfighting domain. 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.
Full Stack Software Engineer UnissantFull Stack Software EngineerHerndon, VAFull timeThis individual is energized by solving real mission problems, collaborating with project managers and stakeholders, and delivering secure, well-documented software that makes complex programs easier to understand, manage, and improve. The ideal candidate is a versatile software engineer who enjoys building modern, user-friendly applications and turning data into meaningful insights through dashboards, visualizations, SharePoint solutions, and PMO-support tools.
Mission Software Engineer ANDURIL INDUSTRIESMission Software EngineerReston, VA$166,000–$220,000 / yearAbove all, Mission Software Engineers are driven by a "Whatever It Takes" mindset-executing in an expedient, scalable, and pragmatic way while keeping the mission top-of-mind and making sound engineering decisions to deliver successful outcomes correctly, on-time, and with high quality. 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.
NewLead, Software Engineer L3Harris Technologies IncLead, Software EngineerHerndon, VA$117,000–$218,000 / yearWith 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. Job Description: EMSS is seeking experienced software engineers to support multiple software product deliveries, system modernization efforts, and future growth initiatives.
Senior Front End Software Engineer, React ANDURIL INDUSTRIESSenior Front End Software Engineer, ReactWashington, DC$191,000–$253,000 / yearDevelop tools and capabilities that extend Anduril's Lattice OS to solve unique customer problems in the command and control of complex assets, the planning and execution of missile defense missions, networking, and remote asset management in far-edge environments. By working hand-in-hand with elite teams in Perception, AI, Motion Planning, Hardware, Test Engineering, Space, Networking, and Vehicle hardware, we craft cutting-edge, end-to-end systems that redefine mission success.
Sr. Lead RF Software Engineer - TS/SCI CI ParsonsSr. Lead RF Software Engineer - TS/SCI CIHerndon, VirginiaTakes a lead role in Developing the software to bring RF, Wireless, SIGINT, ELINT, and/or Electronic Warfare solution designs to fruition, drawing from experience with: Implementing real time DSP algorithms for modulation/demodulation, filtering, channelization, detection, and estimation. Experience with proposal writing and building customer relations, Working knowledge of Software Development Frameworks, Previous IC or DoD-related RF, Wireless, SIGINT, ELINT, and/or Electronic Warfare systems program/project work experience.
Software Engineer II Alarm.com IncorporatedSoftware Engineer IITysons Corner, VA$88,300–$122,550 / yearOur comprehensive suite of solutions-including security, video surveillance, access control, active shooter detection, intelligent automation, energy management, and wellness-is delivered exclusively through a trusted network of thousands of professional service providers and commercial integrators across North America and worldwide. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies.
Mission Software Engineer Anduril Industries IncMission Software EngineerReston, VA$166,000–$220,000 / yearAbove all, Mission Software Engineers are driven by a "Whatever It Takes" mindset-executing in an expedient, scalable, and pragmatic way while keeping the mission top-of-mind and making sound engineering decisions to deliver successful outcomes correctly, on-time, and with high quality. 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.
Ground Software Engineer, Space Anduril Industries IncGround Software Engineer, SpaceChantilly, VA$166,000–$220,000 / yearWe''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 warfighting domain. 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.
Jr. Software Developer VTGJr. Software DeveloperChantilly, VirginiaFull timeExperience creating applications with Java, Springboot, and Amazon Web Services for backend components, focusing on low-latency, high-throughput distributed systems As new systems are built, additional programming languages may be used. Overview: VTG is seeking a Software Engineer for a 200+ FTE technical development program supporting the Sponsor’s Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management.
Senior Security Software Engineer, IAM - Moveworks ServiceNow IncSenior Security Software Engineer, IAM - MoveworksWashington, DCDevelop with secure access models in mind: Continuously develop role design improvements and access assignment patterns across AWS, Kubernetes, SaaS apps, and internal systems to reduce unnecessary privileges, minimize manual grants, and create scalable "safe baseline" access that covers routine work without daily elevation. Run and improve user access reviews (UAR): Develop, execute and design a UAR process & solution that meets compliance requirements while improving real security signal-minimizing approver burden through scoping, automation, and clear decision support.
Software Engineer (Tactical Decision Aids - Mid-Level) Leidos Holdings IncSoftware Engineer (Tactical Decision Aids - Mid-Level)Bethesda, MD$69,550–$125,725 / yearLeidos' 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. 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.
Staff Software Engineer, Autonomous Pilot Integration – Weapons (R5400) Shield AIStaff Software Engineer, Autonomous Pilot Integration – Weapons (R5400)Washington, DCCollaboration Across Teams & Partners – Serve as a primary technical interface with the Autonomy Capabilities team, Perception team, feature crews, autopilot vendors, C2 providers, and customer/contractor partners; influence interface definitions and coordinate integration across organizations. We combine capabilities from the Autonomy Capabilities team (motion planning, tactics), the Perception team (e.g., track fusion), and the HivemindSDK to develop the autonomy software that runs on launched effects platforms, then integrate, validate, and field it on the real hardware—for U.S. and international defense customers.
Senior Staff Software Engineer, Autonomous Pilot Integration – Weapons (R5398) Shield AISenior Staff Software Engineer, Autonomous Pilot Integration – Weapons (R5398)Washington, DCYou'll solve the organization's most complex integration challenges, influence long-term technical strategy, and partner with engineering leadership, the Autonomy Capabilities and Perception teams, autopilot vendors, C2 providers, and customer stakeholders to deliver autonomy capabilities that perform reliably in operational environments. Collaboration Across Teams & Partners – Build strong technical partnerships across the Autonomy Capabilities team, Perception team, feature crews, autopilot vendors, C2 providers, customer organizations, and engineering leadership; influence architecture and technical direction beyond the portfolio.
Software Engineer, DevSecOps Helsing GmbHSoftware Engineer, DevSecOpsWashington, DCYou will own the security posture of our development environment - ensuring CMMC Level 2 compliance, hardening our software supply chain, and implementing the controls required for product teams to achieve ATO against NIST and other cybersecurity frameworks. You will work closely with platform and product engineers to build secure CI/CD pipelines, enforce policy-as-code, and maintain the shared infrastructure that all teams depend on.
Principal Software Engineer Cubic CorpPrincipal Software EngineerAshburn, VACompany Details: When you join Cubic, you become part of a company that creates and delivers technology solutions in transportation to make people's lives easier by simplifying their daily journeys, and defense capabilities to help promote mission success and safety for those who serve their nation. Four-year college degree in computer engineering or other related technical discipline, plus a minimum of eight years of related experience or a master's degree with at least six years of related experience.
Software Engineer, Platform Engineering HelsingSoftware Engineer, Platform EngineeringWashingtonYou will design and operate cloud infrastructure, deploy and maintain shared services like GitLab, Artifactory, and CI/CD pipelines, and build internal tooling that accelerates software delivery across the organization. You will also enable product teams with their own isolated environments — provisioning cloud accounts, standing up EKS clusters, databases, and the automation to make it all self-service and efficient.
Software Engineer, Fleet Infrastructure Anduril Industries IncSoftware Engineer, Fleet InfrastructureWashington, DC$166,000–$220,000 / yearThis includes designing & implementing core developer SDKs for metrics aggregation, structured logging, and tracing, building the real-time data pipelines to connect environments with our core Observability systems, and operate/manage our central monitoring and alerting infrastructure. Design developer-facing SDKs & tooling for instrumenting mission-critical services - We build the libraries & tooling that make correct, ergonomic instrumentation the default across a heterogeneous fleet of services & languages/frameworks (predominantly Go, Rust, C++, and Python).
Software Engineer - Backend Two Six TechnologiesSoftware Engineer - BackendArlington, VAFull timeOverview of Opportunity As a Two Six Technologies Staff Backend Engineer for web hosted services, you will work with the product team to develop and implement new features with developers and operators to help shape program functionality and usability. Salary is one component of our total compensation package and the specific salary offered is determined by various factors, including, but not limited to education, experience, knowledge, skills, geographic location, as well as contract specific affordability and organizational requirements.
Model-Based Systems Engineer LeidosModel-Based Systems EngineerRockville, MD$69,550–$125,725Bachelor’s degree in engineering or related field with 2+ years of prior relevant experience or a master’s degree with at least a year experience in one of these areas: systems engineering, software engineering, test engineering or related field. March 30, 2026For 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.
Senior Model Based Systems Engineer LeidosSenior Model Based Systems EngineerAlexandria, VA$107,900–$195,050Bachelor’s degree in engineering or related field with 8+ years of prior relevant experience or a master’s degree with 6+ years of experience in one of these areas: systems engineering, software engineering, test engineering or related field. Your role will directly support our diverse portfolio of programs through a combination of requirements and design architecture analysis; MBSE Model development; mentoring junior engineers and assisting technical leadership develop briefing material.
Software Engineer (Java, MASH, Linux) CymertekSoftware Engineer (Java, MASH, Linux)Reston, VirginiaComputer Science, Software Engineering, Information Technology, Computer Engineering, Systems Engineering, Applied Mathematics, Data Science, Information Systems, Network Engineering, Cybersecurity, etc. Software Engineer, Java Developer, Linux Developer, Middleware Engineer, Systems Engineer, Backend Developer, Full Stack Developer, Application Developer, Java Software Engineer, MASH Developer, etc.
Expert Software Engineer 671 Freedom Technology Solutions GroupExpert Software Engineer 671Herndon, VirginiaLinux (Bash) shell scripting automated testing for front end applications (i.e. Jasmine, Selenium, Cypress) web-based platforms to perform searches or analytics on large data sets orability to design, develop, test and implement new applications based on project requirements. The ideal candidate will help promote state-of-the-art IT solutions, collaborating with IT mission partners to share technology and lessons learned and ensure records management processes and requirements are included in the early design stages of IT solutions across the Intelligence Community.
Enterprise Architect/Systems Engineer LeidosEnterprise Architect/Systems EngineerBethesda, MD$131,300–$237,350Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
Software Engineer State AffairsSoftware EngineerWashington, DC$120,000–$210,000 / yearSoftware Engineers own user‑facing features end‑to‑end: slick React/Next JS interfaces, performant Node APIs, and Postgres‑centric data models that keep up with petabyte‑scale content. One sprint you'll prototype a semantic‑search UI backed by vector embeddings; the next you'll build a real‑time collaboration layer that lets policy analysts co‑author annotations and compare version histories without ever refreshing the page.
Software Engineer II - Front End Ad HocSoftware Engineer II - Front EndMc Lean, VARemote$95,000–$110,000 / yearWe partner with these agencies to build new capabilities, deliver products, establish data as a strategic asset for informed decision-making, modernize legacy systems, and build the digital service infrastructure necessary to scale their mission impact. Primary expectations for a Software Engineer II - Front End include: Build and maintain user-facing applications using Angular, HTML/CSS, and JavaScript, implementing designs from Figma specifications using federal Design System components.
Software Engineer II - Front End (Library of Congress) Ad HocSoftware Engineer II - Front End (Library of Congress)Mc Lean, VARemoteWe partner with these agencies to build new capabilities, deliver products, establish data as a strategic asset for informed decision-making, modernize legacy systems, and build the digital service infrastructure necessary to scale their mission impact. Primary expectations for a Software Engineer II - Front End include: Build and maintain user-facing applications using Angular, HTML/CSS, and JavaScript, implementing designs from Figma specifications using federal Design System components.
Senior Network Engineer LeidosSenior Network EngineerAccokeek, MD$107,900–$195,050The Senior Systems Engineer will provide technical leadership and support in the areas of IT planning, solution specification/design, implementation and target architecture development for the AFNCR Consolidated Communication Center (CCC). If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
M365 Engineer LeidosM365 EngineerBethesda, MD$107,900–$195,050Engineer, administer, and provide lifecycle support for Microsoft 365 (government community cloud (GCC) services including but not limited to: Entra ID (Azure AD), Exchange Online, Intune, Teams, Power Platform, Purview. Leidos Dig Mod Health IT division is seeking a skilled and collaborative M365 Engineer to support the HHS enterprise by managing all aspects of Microsoft 365 Government Community Cloud (GCC) Software as a Service (SAAS) offering.
Software Engineer - Full-Stack Developer AeroVironment IncSoftware Engineer - Full-Stack DeveloperHerndon, VA$83,500–$208,000 / yearExperience in a broad range of technical knowledge, including software, systems engineering, systems architecture, networking, functional analysis, systems analysis, usability engineering, and testing in an agile environment. Agencies of the U.S. Department of Defense and allied military services use the company's hand-launched UAS to provide situational awareness to tactical operating units through real-time, airborne reconnaissance, surveillance, and target acquisition.
iOS Vulnerability Engineer (Software) CymertekiOS Vulnerability Engineer (Software)Reston, VirginiaiOS Vulnerability Engineer (Software), Mobile Security Engineer, Application Security Engineer, iOS Security Researcher, Software Security Analyst, Mobile App Penetration Tester, Cybersecurity Engineer, iOS Exploit Developer, Vulnerability Analyst, Secure Software Engineer, etc. Computer Science, Cybersecurity, Software Engineering, Information Technology, Computer Engineering, Information Assurance, Mobile Application Development, Data Science, Network Security, Systems Engineering, etc.
Senior Software Engineer Cohere Technology Group LLCSenior Software EngineerChantilly, VAThis is an opportunity to join a close-knit team of engineers who are passionate about learning from each other and developing next-generation capabilities supporting our stakeholders’ operations. Cohere was founded in 2015 by seasoned intelligence community engineers to unify and streamline both cyber and kinetic workflows for the Intelligence Community and the Department of Defense.
Staff Software Engineer - NOS The Nuclear CompanyStaff Software Engineer - NOSWashingtonWe expect every team member to continuously identify opportunities to automate workflows, enhance decision-making, improve processes, and contribute to the ongoing evolution of NOS as a strategic operating capability that enables The Nuclear Company to scale with excellence. The actual salary offered may vary based on relevant factors as determined in the Company’s discretion, which may include experience, qualifications, tenure, skill set, availability of qualified candidates, geographic location, certifications held, and other criteria deemed pertinent to the particular role.
University, Software Engineer Booz Allen HamiltonUniversity, Software EngineerArlington, 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 Engineer (Java, OpenFGA) Agile DefenseSoftware Engineer (Java, OpenFGA)Rosslyn, VirginiaFamiliarity with frameworks and tools like Django, NATS, Kafka, Redis, ClickHouse, OpenTelemetry, OpenRouter, and LiteLLM will be highly advantageous as you design and implement scalable, observable, and secure solutions. You will be responsible for building and maintaining microservices that integrate seamlessly with cloud-native platforms, ensuring continuous monitoring and high reliability across all operational workflows.
Software Engineer Endurance IT ServicesSoftware EngineerReston, VirginiaThis hands-on role combines Dynamics 365 CRM expertise with full-stack software engineering, requiring ownership of solution design, development, integrations, and production support across enterprise platforms. You'll join a small, agile team focused on building and supporting scalable solutions that power Marketing, Sales, and Customer Service operations.
Software Engineer/Data Manager Jasint Consulting And Technologies, LlcSoftware Engineer/Data ManagerAlexandria, VAWhat you will be doing: The Software Engineer/Data Manager shall provide data management support and design/create software prototypes, perform code reviews, and interface with the System Security Engineering (ISSE). Minimum Requirements: Education/Experience: A Bachelor or Master's degree with 8+ years of subject matter experience, or, specialized training and 10+ years' experience, or, equivalent intelligence/academic experience.
Senior Software Engineer :: Bethesda, MD (Remote) ARK Solutions, Inc.Senior Software Engineer :: Bethesda, MD (Remote)Bethesda, MDRemoteMinimum 7 years of experience in designing, developing, and supporting enterprise applications in Linux, Windows, Mobile, COTS, and/or cloud-based environments. You'll design, develop, and enhance applications within the Associate App ecosystem, ensuring scalable, secure, and reliable technology solutions.
Principal Software Engineer CVS Health CorpPrincipal Software EngineerDC$144,200–$288,400 / yearOperating as both a senior individual contributor and technical leader, you will partner closely with product, architecture, and engineering leadership to make pragmatic, high‑impact design decisions that balance speed, quality, and long‑term maintainability. Partner with teams and serve as subject matter expert to provide benchmarked solutions to multiple, complex technical projects/initiatives within own area of expertise and organize cross-departmental application architectural solutions.
Sr. Software Engineer - Ad Tech & Distributed Systems - FreeWheel Comcast CorpSr. Software Engineer - Ad Tech & Distributed Systems - FreeWheelReston, VAThe Software Engineer will develop deep expertise in the business domain, system architecture, and application workflows to effectively troubleshoot issues, resolve complex break/fix scenarios, and proactively improve system reliability. The Sr Software Engineer - Ad Tech & Distributed Systems is responsible for the availability, latency, performance, efficiency, change management, monitoring, emergency response, and capacity planning for FreeWheel platforms, with a primary focus on the Streaming Hub application.
Senior Software Engineer, Public Sector Scale AI IncSenior Software Engineer, Public SectorWashington, DC$216,000–$311,000 / yearThe range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position and may be inclusive of several career levels at Scale; it will be determined during the interview process based on work location and additional factors, including job-related skills, experience, qualifications, interview performance, and relevant education or training. The Public Sector software engineers (SWEs) create the core product building blocks forward-deployed teams use to develop agentic capabilities that function across multiple domains.
Staff Software Engineer, Public Sector Scale AI IncStaff Software Engineer, Public SectorWashington, DC$252,000–$362,000 / yearAs a Staff Software Engineer, you will orchestrate the implementation of vertical features and horizontal capabilities to include mentoring other engineers on defining requirements with stakeholders and communication tradeoffs of technical implementations on feature and capabilities until they are accepted by the stakeholders. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position and may be inclusive of several career levels at Scale; it will be determined during the interview process based on work location and additional factors, including job-related skills, experience, qualifications, interview performance, and relevant education or training.
NewSoftware Engineer - Front End Angular - TS/SCI Maania Consultancy ServicesSoftware Engineer - Front End Angular - TS/SCIHerndon, VAFull timeExperience consuming APIs (REST and/or GraphQL), handling auth/session patterns, and error states. Strong, hands-on expertise with Angular (components, modules, routing, forms, RxJS).
Principal Software Engineer Recorded FuturePrincipal Software EngineerWashington, DC$152,000–$228,500 / yearAs a Principal Software Engineer, you will work across application code and infrastructure to collect, transform, and deliver structured threat data: tracking malware infrastructure, phishing campaigns, spam networks, command-and-control systems, and more. What You'll Do: Data Pipeline Ownership: Design, build, and maintain scalable data pipelines that collect, transform, and deliver structured threat intelligence data powering the Security Intelligence Graph.
Secure Software Engineer (Ts/Sci Clearance Required) NorthHill TechnologySecure Software Engineer (Ts/Sci Clearance Required)Chantilly, VirginiaWorking closely with Cloud & DevOps Engineers, system engineers, data scientists, and Government stakeholders, the Secure Software Engineer will implement application services, user interfaces, APIs, automated testing capabilities, and data processing workflows while incorporating secure coding practices, vulnerability remediation, and cybersecurity engineering principles. The successful candidate will be part of a team to support the design, development, integration, testing, deployment, and sustainment of the enterprise IV&V platform while collaborating with Government stakeholders to evaluate existing GEOINT IV&V capabilities, implement automated verification processes, and deliver secure, scalable software solutions.
Staff Software Engineer - EDR Agent Go Huntress Labs IncStaff Software Engineer - EDR Agent GoDCRemoteUse AI tools to move faster and define how the team does so responsibly, what gets AI-assisted, how AI-generated code is reviewed and validated, and where the line sits, given that the endpoint agent runs with high privilege on customer machines and ships to millions of hosts. Integrate our endpoint application with our backend SaaS web application's REST APIs to manage state and provide information used for threat hunting, with particular attention to low resource usage on endpoints.
Software Engineer III Sierra Nevada CorpSoftware Engineer IIIHerndon, VA$108,496.89–$149,183.22 / yearIMPORTANT NOTICE: To conform to U.S. Government international trade regulations, applicant must be a U.S. Citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State or U.S. Department of Commerce. As SNC''s corporate team, we provide the company and its business areas with strategic direction and business support spanning executive management, finance and accounting, operations, human resources, legal, IT, information security, facilities, marketing, and communications.