Calibre SystemsNewSenior Consultant - VMware Cloud Foundation (VCF) Design and Deploy Calibre SystemsSenior Consultant - VMware Cloud Foundation (VCF) Design and DeployAlexandria, VAYou will work directly with customer stakeholders across high-visibility DoD, federal, or regulated environments to implement scalable, secure, and high-performing platforms. CALIBRE Systems inc., an employee owned mission focused solutions and digital transformation company, is looking to fill multiple slots in the Washington, DC area.
JobotNewSr. Software Engineer JobotSr. Software EngineerGaithersburg, MD$140,000–$165,000 / yearWith deep expertise in cloud-first architectures, automation, DevSecOps, virtualization, reliability engineering, and large-scale systems integration, we help organizations modernize infrastructure, improve operational efficiency, and support mission-critical environments where performance, security, and resiliency are essential. Our teams partner closely with customers to deliver innovative solutions across cloud strategy, cybersecurity, systems integration, data engineering, machine learning, AI, disaster recovery, and enterprise infrastructure initiatives.
JobotNewSenior Paralegal Manager Hybrid JobotSenior Paralegal Manager HybridWashington, DC$135,000–$185,000 / yearA nationally recognized law firm is seeking a Manager or Senior Manager, Paralegal Services & Resource Management to lead and elevate its paralegal support function with a strong focus on client service, team development, and operational efficiency. The Manager will play a critical leadership role in mentoring professionals, developing career pathways, and enhancing team performance, while also driving innovation through improved systems, technology, and cross-functional collaboration.
JobotNewSenior Electrical Engineer (Mission Critical) JobotSenior Electrical Engineer (Mission Critical)Fairfax, VA$135,000–$200,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. You will also have access to a strong benefits package that supports both your career and personal life, including flexible scheduling, competitive compensation, comprehensive healthcare, retirement planning, and tuition reimbursement.
JobotNewSenior Software Engineer (C++ / Java) JobotSenior Software Engineer (C++ / Java)MONTGOMRY VLG, MD$165,000–$185,000 / yearWith deep expertise in cloud-first architectures, automation, DevSecOps, virtualization, reliability engineering, and large-scale systems integration, we help organizations modernize infrastructure, improve operational efficiency, and support mission-critical environments where performance, security, and resiliency are essential. This role is ideal for a seasoned engineer who enjoys solving complex technical challenges, contributing to system architecture, and partnering closely with Systems Engineering, Development, and Test teams to deliver robust, scalable solutions.
Democracy FundSenior Program Officer Democracy FundSenior Program OfficerWashington, WA$1–$1Full timeINFLUENCE, COMMUNICATIONS AND PHILANTHROPIC PARTNERSHIPS Facilitate increased visibility of grantees’ work, and support dialogue and collaboration with and between grantees and partners in the field through communications, convenings, and network building activities. Build collaborative relationships, peer networks, or formal and informal partnerships with funders, intermediaries, and other partners, including relevant pooled funds and funder collaboratives.
Brightview Senior Living, LLCNewSenior Medication Technician Overnight Brightview Senior Living, LLCSenior Medication Technician OvernightFairfax, VA$24.25–$284. Comprehensive Benefits: Enjoy competitive salaries, health, vision and dental insurance options, retirement plans, tuition reimbursement, employee assistance programs and many more benefits that prioritize your well-being. The salary range mentioned above reflects the potential pay for this role and does not include bonuses or additional incentives (if applicable), nor does it include the value of our benefit program.
JobotNewSenior PowerShell Engineer (Secret Clearance) JobotSenior PowerShell Engineer (Secret Clearance)Washington, DC$120,000–$160,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. This role will focus on building automation solutions within Windows 11 environments to improve operational efficiency, strengthen security posture, and enhance the overall end-user experience.
Govcio LLCNewSenior Network Engineer; Datacenter Operations Govcio LLCSenior Network Engineer; Datacenter OperationsBethesda, MD$85,000–$99,403Proactively monitor growth trends of hosted systems such as Biowulf supercomputer and work with Network Architecture and system owners to proactively recommend resource adjustments as part of our overall Capacity Planning approach to ensure availability of required resources. Qualifications: High School with CCIE (Data Center) certification and 5 years of equivalent Data Center operational experience OR CCNP (Data Center) certification and 10 years of equivalent Data Center operational experience.
MaxCyte, IncNewSenior Corporate Paralegal/Legal Contracts Specialist MaxCyte, IncSenior Corporate Paralegal/Legal Contracts SpecialistRockville, MDThe ideal candidate will have 5+ years of relevant legal experience in an in-house legal department, law firm, or similar environment, with experience spanning some combination of board support, contract administration, legal operations, commercial contracting, and corporate paralegal work. This role provides broad-based legal support across board and committee support, routine commercial contracting, legal operations, systems management, and selected public company and intellectual property support.
JobotNewSenior RMF Cybersecurity Engineer (Navy) JobotSenior RMF Cybersecurity Engineer (Navy)Manassas, VA$120,000–$150,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Our team specializes in securing critical systems through authorization management, risk mitigation strategies, vulnerability assessment processes, and cybersecurity engineering practices designed to support evolving compliance and operational requirements.
L3Harris TechnologiesNewSenior Specialist, Systems Engineering (Mission Protection) (TS/SCI w Poly) L3Harris TechnologiesSenior Specialist, Systems Engineering (Mission Protection) (TS/SCI w Poly)Springfield, VAThe ideal candidate will apply operational security (OPSEC), counterintelligence, cyber defense, and threat principles to protect sensitive capabilities to ensure the survivability of U.S. assets in contested environments. 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.
JobotNewSenior Product Manager JobotSenior Product ManagerMcLean, VA$150,000–$220,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Lead new product initiatives building on a proven quality and reliability platform to improve developer experience across AI, API, CLI, and VPC uses, new product org!
Sparks GroupNewSr. Contracts Specialist Sparks GroupSr. Contracts SpecialistMcLean, VAThis role serves as the primary contracts lead, ensuring compliance, mitigating risk, and driving successful execution across cross-functional teams and government stakeholders. We are seeking a Senior Contracts Specialist with active TS/SCI to lead the full lifecycle of complex Other Transaction (OT) agreements supporting defense prototyping efforts.
CredenceSenior Grants & Monitoring Manager CredenceSenior Grants & Monitoring ManagerWashington, DCThe Senior Grants & Monitoring Manager oversees grants administration, monitoring and evaluation, compliance, and site visit support for Refugee Resettlement and Unaccompanied Alien Children (UAC) programs. This requirement provides critical mission support across various technical, program management, and administrative functions to assist ORR in its mission to promote the health, well-being, and stability of refugees and unaccompanied children.
CredenceSenior Data and Systems Manager CredenceSenior Data and Systems ManagerWashington, DCThe Senior Data and Systems Manager oversees data validation, data analytics, help desk and systems support for Refugee Resettlement and Unaccompanied Alien Children (UAC) programs. This requirement provides critical mission support across various technical, program management, and administrative functions to assist ORR in its mission to promote the health, well-being, and stability of refugees and unaccompanied children.
Census InfoTech IncSenior OT Network Architect Census InfoTech IncSenior OT Network ArchitectManassas, VAFull timeEmployment Type: Contract-to-HireJob SummaryWe are seeking an experienced Senior OT Network Architect to lead the design, implementation, and modernization of Operational Technology (OT) network infrastructure in a mission-critical industrial environment. Develop network segmentation strategies using ISA/IEC 62443 zones and conduits models.
Sparks GroupNewSr. Contracts Manager Sparks GroupSr. Contracts ManagerFairfax, VAThe ideal candidate is a strategic, hands-on contracts professional who can work independently, support complex government programs, and provide leadership on critical contractual and compliance matters. This role requires extensive experience with FAR, DFARS, and federal acquisition regulations, along with strong expertise in proposal cost volumes, risk management, and contract negotiations.
CredenceSenior Training and Technical Assistance Manager CredenceSenior Training and Technical Assistance ManagerWashington, DCThe Senior Training and Technical Assistance Manager oversees curriculum development, stakeholder support, and knowledge management for Refugee Resettlement and Unaccompanied Alien Children (UAC) programs. This requirement provides critical mission support across various technical, program management, and administrative functions to assist ORR in its mission to promote the health, well-being, and stability of refugees and unaccompanied children.
CredenceSenior Communications Manager CredenceSenior Communications ManagerWashington, DCThe Senior Communications Manager oversees public-facing content, stakeholder engagement, and digital content strategy for Refugee Resettlement and Unaccompanied Alien Children (UAC) programs. This requirement provides critical mission support across various technical, program management, and administrative functions to assist ORR in its mission to promote the health, well-being, and stability of refugees and unaccompanied children.
CredenceSenior Program Analyst - INSCOM CredenceSenior Program Analyst - INSCOMFort Belvoir, VAINSCOM executes mission command of operational intelligence forces; conducts worldwide multi-discipline and all-source intelligence operations; delivers advanced skills training, linguist support, specialized quick reaction capabilities, and intelligence-related logistics, contracting, and communications in support of Army, Joint, and Coalition commands and the National Intelligence Community. The Senior Budget Analyst prepares, reviews, analyzes, coordinates, and maintains documentation and associated databases used in DoD resource management systems, while supporting Future Years Defense Program planning, development of transformational resource strategies, and current-year fiscal and manpower execution.
Beacon Hill Staffing Group, LLCSenior Property Accountant Beacon Hill Staffing Group, LLCSenior Property AccountantBethesda, MD$95,000–$115,000 / yearFull timeLearn more about Beacon Hill and our specialty divisions, Beacon Hill Associates, Beacon Hill Financial, Beacon Hill HR, Beacon Hill Legal, Beacon Hill Life Sciences and Beacon Hill Technologies by visiting www.bhsg.com. Our niche brands offer a complete suite of staffing services to emerging growth companies and the Fortune 500 across market sectors, career specialties/disciplines and industries.
Johns Hopkins Applied Physics Laboratory (APL)NewSenior Systems & Monitoring Administrator Johns Hopkins Applied Physics Laboratory (APL)Senior Systems & Monitoring AdministratorLaurel, MD$100,000–$245,000Demonstrable ability to lead complex infrastructure or monitoring projects from inception through implementation, including planning, execution, and stakeholder communication; team leadership or mentoring experience strongly preferred. APL provides eligible staff with a comprehensive benefits package including retirement plans, paid time off, medical, dental, vision, life insurance, short-term disability, long-term disability, flexible spending accounts, education assistance, and training and development.
Johns Hopkins Applied Physics Laboratory (APL)NewSr. Subcontracts Manager Johns Hopkins Applied Physics Laboratory (APL)Sr. Subcontracts ManagerLaurel, MD$58,700–$146,300You will manage a portfolio of work that will include the full procurement life cycle of subcontractor services by guiding technical staff through the acquisition process, including pre-solicitation planning, review and critique of the statements of work (SOW), evaluation of contractor proposals, conducting negotiations, awarding contracts, managing contractor performance, and ultimately contract closeout. We are seeking a Senior Subcontracts Manager to help us manage all contractual matters including negotiations, resolving issues, executing agreements and overseeing subcontracts.
Sparks GroupNewSr Director, Development Sparks GroupSr Director, DevelopmentArlington, VARemoteReporting directly to the COO, this position will oversee fundraising initiatives across corporate partnerships, major gifts, individual giving, and grants management, while collaborating closely with executive leadership and the Board. Job Summary/Company: Sparks Group has partnered with a leading nonprofit healthcare and professional membership organization to identify a strategic and relationship-driven Senior Director, Development.
Company ConfidentialSenior Drupal Architect Company ConfidentialSenior Drupal ArchitectWashington DC, DCFull timeWeb Development Skills: Proficiency in PHP, MySQL, HTML, CSS, and JavaScript; working knowledge of additional languages and frameworks (.NET, Python, Ruby, Swift, SQL Server). Modern API Frameworks: Strong experience building scalable APIs using Node.js, FastAPI (Python), Bun, or similar modern backend technologies.
Kforce Inc.NewSenior Payroll Specialist Kforce Inc.Senior Payroll SpecialistGainesville, VA$70,000–$85,000Position Summary: The Senior Payroll Specialist is responsible for processing and managing payroll operations, ensuring employees are paid accurately and on time while maintaining compliance with federal, state, and local regulations. Employee pay is based on factors like relevant education, qualifications, certifications, experience, skills, seniority, location, performance, union contract and business needs.
Johns Hopkins Applied Physics Laboratory (APL)NewSenior Embedded Systems & Hardware-in-the-Loop Engineer Johns Hopkins Applied Physics Laboratory (APL)Senior Embedded Systems & Hardware-in-the-Loop EngineerLaurel, MD$105,000–$290,000The Electro Optical Seeker and Infrared Systems group (A1F) of the Air and Missile Defense Sector (AMDS) is seeking a Senior Embedded Systems & Hardware-in-the-Loop Engineer to lead the architecture and implementation of complete embedded systems, custom electronics hardware, FPGA firmware, real-time embedded software, and sophisticated HWIL test systems. APL provides eligible staff with a comprehensive benefits package including retirement plans, paid time off, medical, dental, vision, life insurance, short-term disability, long-term disability, flexible spending accounts, education assistance, and training and development.
Maplewood Senior Living LLCNewSenior Living Sales Specialist Maplewood Senior Living LLCSenior Living Sales SpecialistWashington, DCThis role involves filling in for current vacancies in the Leasing Director/Sales position, training new Sales Team Members, and temporarily supporting communities as additional help to support the community’s occupancy goals. · Collaborate with department heads to emphasize the team’s role in sales and their participation in the community sales and marketing plans.
Sunrise Senior LivingNewSenior Manager Payroll Sunrise Senior LivingSenior Manager PayrollMcLean, VA$124,000–$155,000 / yearSee Sunrise Senior Living Terms & Conditions at https://c-5885-20221207-www-sunriseseniorliving-com.i.icims.com/terms-and-conditions and Privacy Policy at https://c-5885-20221207-www-sunriseseniorliving-com.i.icims.com/privacy-policy and SonicJobs Privacy Policy at https://www.sonicjobs.com/us/privacy-policy and Terms of Use at https://www.sonicjobs.com/us/terms-conditions. Collaborate to develop and execute payroll strategies and initiatives to enhance efficiency and drive continuous improvement while also ensuring enterprise-wide compliance with all payroll-related laws, tax regulations, wage & hour laws and company policies.
Pinnacle Technical ResourcesSenior Application Developer Pinnacle Technical ResourcesSenior Application DeveloperReston, Virginia$60–$65 / hourContractorThe specific compensation for this position will be determined by several factors, including the scope, complexity, and location of the role, as well as the cost of labor in the market; the skills, education, training, credentials, and experience of the candidate; and other conditions of employment. The Application Developer performs high-complexity analysis, design, development, and unit testing of software applications based on user requirements and design documents.
HITT ContractingNewSenior Associate, Subcontractor Relationships HITT ContractingSenior Associate, Subcontractor RelationshipsFalls Church, VABachelor’s degree required; preferred fields of study include Marketing, Accounting, Risk Management, Construction Management, Business Administration, Supply Chain Management, or related discipline. The Senior Associate, Subcontractor Relations is a key member of HITT’s Legal & Compliance team, responsible for supporting the onboarding, engagement, risk management, and strategic relationship development of HITT’s trade partners nationwide.
Sparks GroupNewSenior Data Engineer - Palantir Sparks GroupSenior Data Engineer - PalantirMcLean, VAYou’ll work with and guide a multi-disciplinary team of analysts, data engineers, developers, and data consumers in a fast-paced, agile environment. 3+ years of experience designing, developing, operationalizing, and maintaining data applications for reporting and analytics at enterprise scale.
PlanIT GroupNewSME Consultant Sr. (Okta) PlanIT GroupSME Consultant Sr. (Okta)Washinfton, DCPerform customer T2/T3 support activities including assessment of user experience scenarios and identifying resolutions to unique user access issues for Okta integrated applications. Description: Our client is seeking a Consultant SME Senior to provide guidance to IT partners on configuration, debugging, and deployment of tools requiring Identity and Access Management (IAM) integration.
Medline IndustriesSenior Clinical Solutions Specialist Medline IndustriesSenior Clinical Solutions SpecialistAlexandria, VA$92,000–$138,000 / yearFull timeMedline Industries, LP, and its subsidiaries, offer a competitive total rewards package, continuing education & training, and tremendous potential with a growing worldwide organization. Provide end-user insight to clinical process enhancement and improvement opportunities in order to secure or enhance current business for area of specialtyJob Description.
ASRT, Inc.NewSenior Medical Coding Subject Matter Expert ASRT, Inc.Senior Medical Coding Subject Matter ExpertFalls Church, VA$110,000–$115,000 / yearThis person works inside the Medical Coding Program Branch (MCPB), supporting MCPB staff and Military Treatment Facility coders with coding guidance, audit support, training, and policy interpretation under DoD Instruction 6040.42 (Medical Coding Program). • Active credential in good standing from one of the following: AAPC Certified Coding Specialist for Physician-based coding (CCS-P), AAPC Certified Professional Coder (CPC), AHIMA Certified Coding Specialist (CCS), or AHIMA Registered Health Information Administrator (RHIA) with coding specialization.
Integrated Data ServicesAir Force - Senior Account Manager (Arlington, VA) Integrated Data ServicesAir Force - Senior Account Manager (Arlington, VA)Arlington, VA$175,000–$190,000 / yearThis role is responsible for owning the customer relationship, driving enterprise adoption, and expanding the impact of the Project Management Resource Tools (PMRT) System and the Comprehensive Cost and Requirement (CCaR) System across Portfolio Acquisition Executive (PAE) organizations and Headquarters Air Force (HAF) stakeholders. When determining an applicant’s compensation, various factors are taken into consideration including, but not limited to: geographic location, relevant prior work experience, relevant training, special skills/competencies, education, clearance, licenses/certifications, labor categories/contract rates and other business needs.
Johns Hopkins Applied Physics Laboratory (APL)NewSenior Software Engineer Johns Hopkins Applied Physics Laboratory (APL)Senior Software EngineerLaurel, MD$105,000–$290,000In A5C, we develop and deploy advanced planning capabilities and solutions directly into the hands of the warfighter, empowering them to design and execute dominant defenses for maximum performance across multiple simultaneous multiple missions, multiple services, and multiple command echelon planning levels and domains. This is a unique opportunity to dive deep into both software engineering and mission planning while using your skills to design, develop, and test physics-based models for military planning tools associated with Air & Missile Defense (AMD).
Johns Hopkins Applied Physics Laboratory (APL)NewSenior Reverse Engineer / Cyber Capability Engineer Johns Hopkins Applied Physics Laboratory (APL)Senior Reverse Engineer / Cyber Capability EngineerLaurel, MD$105,000–$290,000We have custom facilities tailored to specific classes of systems including foreign materiel, telecommunications/network infrastructure, and industrial systems as well as general reverse engineering labs. The Johns Hopkins University Applied Physics Laboratory (APL) brings world-class expertise to our nation’s most critical defense, security, space and science challenges.
GLOBAL ASSET TECHNOLOGIES, LLCSenior Program Analyst GLOBAL ASSET TECHNOLOGIES, LLCSenior Program AnalystWashington DC, DC$152,000–$152,000 / yearThe contractor will provide the requisite staff and expertise to effectively support the CTPP’s unique lines of effort that includes but is not limited to counterterrorism policy development, science and technology program implementation, program evaluation and assessment, and interagency exercise activities. · The contractor shall assist in the development and management of various CTPP knowledge assets, including but not limited to action item documents, rosters of experts, and knowledge generated through working group and inter agency initiatives.
System OneSenior Kubernetes Engineer (TS/SCI) System OneSenior Kubernetes Engineer (TS/SCI)Washington, DC$200,000–$220,000 / yearThis role is ideal for a senior engineer who thrives in complex Kubernetes environments, with the ability to design, operate, and optimize large-scale container platforms while supporting modern application architectures. We are seeking a highly experienced Senior Kubernetes Engineer / Platform Administrator to lead the design, deployment, and sustainment of containerized application platforms.
System OneNewSenior IT Data Engineer System OneSenior IT Data EngineerWashington, DCThe Data Architecture, Technology, and Analytics (DATA) section is looking for an experienced detailed oriented Data Architect/Engineer who will be responsible for expanding and optimizing our data and data pipeline architecture, as well as optimizing data flow and collection for economic policy and research teams. The ideal candidate is an experienced hands-on data modeler with working knowledge of database design and administration, data pipeline building, and data wrangling who enjoys improving existing data systems and/or building them from the ground up.
System OneNewSenior Data Architect System OneSenior Data ArchitectWashington, DCThe Data Architecture, Technology, and Analytics (DATA) section is looking for an experienced detailed oriented Data Architect/Engineer who will be responsible for expanding and optimizing our data and data pipeline architecture, as well as optimizing data flow and collection for economic policy and research teams. The ideal candidate is an experienced hands-on data modeler with working knowledge of database design and administration, data pipeline building, and data wrangling who enjoys improving existing data systems and/or building them from the ground up.
System OneNewSr. MS Systems and Azure Cloud Engineer (hybrid) System OneSr. MS Systems and Azure Cloud Engineer (hybrid)Washington, DC$115,000–$130,000 / yearSystem One IT has a direct hire opening for a Senior Systems and Azure Cloud Engineer to be responsible for the design, implementation, maintenance, and optimization of the organization’s IT infrastructure, including servers, storage, networking, virtualization platforms, and cloud services. Background/Skills/Abilities Preferred:Bachelor’s degree in Information Technology, Computer Science, Engineering, or related field preferred; equivalent experience and relevant certifications will be considered instead of a degree.
System OneNewSenior Cloud Security Specialist (API) - onsite System OneSenior Cloud Security Specialist (API) - onsiteWashington, DCStrong understanding of security concepts and technologies related to Identity and Access Management (IAM), security engineering, network security design, security operations, security architecture, general engineering processes, cloud security, data loss protection, zero trust, DevSecOps and vulnerability management. • Proven ability to provide technical security consultation and advisory services with a proactive approach to identifying potential issues, raising questions, and engaging in open dialogue with team members and stakeholders to ensure security objectives are met.
System OneSenior Network Engineer CCNP System OneSenior Network Engineer CCNPAlexandria, VA$180,000–$210,000 / hourProvide executive-level government agency support related to designing, deploying, and ensuring efficient and optimal operation of business-critical enterprise and network environments. Translate stakeholder and Government requirements into network solutions, modifications, and support upgrades (network reconfiguration, hardware and software acquisitions, installation, and testing).
System OneNewSenior Mainframe Engineer System OneSenior Mainframe EngineerMerrifield, VARemoteThe position focuses on troubleshooting and fixing programming defects, supporting nightly batch processing, and maintaining core banking systems built on COBOL mainframe technologies. We are currently seeking a Senior Mainframe Programmer/Support Analyst with a minimum of 10 years of professional experience and extensive experience supporting enterprise banking applications in a production environment.
System OneNewServiceNow Developer Senior System OneServiceNow Developer SeniorLeesburg, VA$70–$90 / hourSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Configure and customize ServiceNow including UI policies, business rules, client scripts, flows, catalog items, and update sets.
System OneNewSenior Telecom Software Engineer (TS/SCI clearance) System OneSenior Telecom Software Engineer (TS/SCI clearance)Herndon, VASupport Linux-based systems supporting telecommunications infrastructure by ensuring high availability, performance, and reliability, supporting environments on CentOS 7 transitioning to Rocky Linux. • Monitor and analyze telecommunications systems, interpret inbound data streams, and utilize packet capture tools like Wireshark and tcpdump to troubleshoot core network issues.