Contracts Manager Inmarsat Government, IncContracts ManagerReston, VAFull timeThe ideal candidate will have experience supporting fixed-price (FFP) and time-and-materials (T&M) contracts, including proposal development, negotiation, execution, and closeout. We are seeking a motivated, self-starting Contract Manager to oversee a diverse portfolio of U.S. Government and related commercial contracts.
Contracts Manager LeidosContracts ManagerChantilly, VA$92,300–$166,850Contracts Expertise: Demonstrated experience providing cradle-to-grave contract administration and management support for U.S. Government contracts, subcontracts, and proposal support including experience with a variety contract types, advanced knowledge of FAR/DFAR and the emerging Federal acquisition environment. As a Contracts Manager, you will serve as a strategic business partner to program managers, capture leaders, and senior business leadership for a portfolio of Intelligence Community programs and pursuits.
Contract Manager (Procurement) - Hybrid Mitchell MartinContract Manager (Procurement) - HybridMerrifield, VA$56.35–$80 / hourBy applying for this job, you agree to receive AI-generated calls, text messages, and/or emails from Mitchell Martin Inc and its affiliates and contracted partners at various frequency through traditional and automated methods. The role involves managing procurement contracts, ensuring alignment with organizational objectives, and achieving cost savings.
Contract & Vendor Manager TeleWorld SolutionsContract & Vendor ManagerChantilly, VAFull timeWith the experience of hundreds of thousands of successful implementations, including macro, DAS, Small Cells, and Wi-Fi, the world’s leading network operators and OEMs trust our knowledge and experience to plan, perform, troubleshoot, and implement an array of technologies and solutions. TeleWorld Solutions is a strategic wireless engineering and consulting firm offering network operators, OEMs, and tower companies turnkey design, optimization, network dimensioning, and deployment services.
Construction Manager (Transportation Planner V) FAIRFAX COUNTY GOVERNMENT [View Hierarchy]Construction Manager (Transportation Planner V)FAIRFAX, VAFull timeProfessional Engineer (PE) license or other professional certification(s), such as FE(EIT) Certificate, Professional Traffic Operations Engineer (PTOE), American Institute of Certified Planners (AICP), Designated Plans Examiner (DPE) from the Engineer and Surveyor’s Institute (ESI), Certified Construction Manager (CCM), Project Management Professional (PMP), VDOT Locally Administered Projects (LAP) Certification, or VDOT Advanced Work Zone Traffic Control Course. This role oversees construction management and administrative staff supporting the project; coordinates quality assurance and quality control efforts; leads interagency coordination; resolves construction and field issues; supports risk management and claims avoidance; and serves as the County’s primary point of contact among contractors, consultants, partner agencies, and internal stakeholders.
NewAccounting Manager JobotAccounting ManagerBaltimore, MD$125,000–$145,000 / 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 is a senior-level, primarily in-person position that ensures the financial health, regulatory compliance, and internal control integrity required to support large-scale, multi-entity neighborhood revitalization and real estate development initiatives.
NewContract Specialist Kaiva TechContract SpecialistRockville, MDFull timep>Kaiva Tech, LLC is seeking a Contract Specialist in Rockville, MD. Develop, review, and coordinate acquisition documentation, including Statements of Work (SOW), Independent Government Cost Estimates (IGCE), Justifications and Approvals (J&A), Acquisition Plans (AP), and complete acquisition packages..
NewProject Manager JobotProject ManagerBaltimore, MD$90,000–$135,000 / 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. Join a respected and growing construction organization where you'll lead high-profile projects from award through completion, own client relationships, influence business growth, and have the opportunity to build your own team and customer base.
NewCommercial Project Manager JobotCommercial Project ManagerManassas, VA$100,000–$140,000 / 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. We are a locally-owned leader in the Washington, DC Metropolitan market with a proven record of construction excellence, client satisfaction, and efficient project delivery.
NewCommercial Construction Project Manager – Mission Critical JobotCommercial Construction Project Manager – Mission CriticalAshburn, VA$105,000–$140,000 / 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 client is a well-established commercial general contractor delivering high-quality construction services across a diverse portfolio of projects, including mission critical, multifamily, institutional, and large-scale commercial developments.
NewMechanical Construction Project Manager JobotMechanical Construction Project ManagerPikesville, MD$100,000–$150,000 / year
NewMechanical Project Manager JobotMechanical Project ManagerDulles, VA$135,000–$190,000 / 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 teams support technically demanding projects across healthcare, commercial, and institutional markets, partnering closely with clients to deliver high-quality, efficient solutions.
NewMechanical Commissioning Engineer / Project Manager (Data Centers) JobotMechanical Commissioning Engineer / Project Manager (Data Centers)Sterling, VARemote$135,000–$165,000 / yearThe successful candidate must be self-motivated and well versed in Data Center projects touching on large building MEP systems design, commissioning, retro-commissioning, energy modeling/analysis and construction for complex buildings. Information 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.
NewConstruction Project Manager JobotConstruction Project ManagerManassas, VA$100,000–$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. A nationally active commercial general contractor is seeking an experienced Construction Project Manager to lead complex, large-scale commercial construction projects.
NewAccounting Manager (Hybrid) JobotAccounting Manager (Hybrid)Baltimore, MD$125,000–$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. The successful candidate will be responsible for overseeing and managing the company's accounting operations, including fund accounting, fund management, and asset management.
NewTax Manager (Hybrid) JobotTax Manager (Hybrid)Towson, MD$95,000–$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. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.
NewPrivate Equity Fund Manager JobotPrivate Equity Fund ManagerWashington, DC$125,000–$150,000 / year
NewProperty Accounting Manager JobotProperty Accounting ManagerPikesville, MD$100,000–$130,000 / 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 is a fantastic opportunity for a seasoned financial leader looking to make a significant impact on the strategic direction of a growing company in the construction industry.
NewHeavy Civil Project Manager JobotHeavy Civil Project ManagerLanham, MD$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. As a project manager on our team, you will be responsible for leading multidisciplinary construction teams and overseeing all phases of project execution, ensuring alignment with schedule, budget, quality, and safety objectives.
NewProject Manager (Commercial Landscaping) JobotProject Manager (Commercial Landscaping)Ashton, MD$130,000–$190,000 / 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. The successful candidate will be responsible for managing and growing the company's financials, overseeing operations, and reporting directly to the president.
NewFinancial Systems Manager (Legal Industry) JobotFinancial Systems Manager (Legal Industry)Washington, DC$185,000–$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. A highly regarded, Am100 Law Firm is seeking a Manager of Financial Systems to lead a team responsible for delivering critical financial data, reporting, and system insights across the business.
NewProject Manager - Construction JobotProject Manager - ConstructionColumbia, MD$90,000–$125,000 / 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. Manage project setup logistics—submittals, RFIs, change orders, materials, labor, budgets, punch lists.
NewService Operations Manager - MEP/HVAC JobotService Operations Manager - MEP/HVACFairfax, VA$150,000–$220,000 / yearAs a Service Operations Manager, you will lead the day-to-day performance of a growing HVAC and Plumbing Service division, overseeing Field Teams, operational processes, customer relationships, and overall business performance across Commercial, Multifamily, and Residential service operations. Information 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.
NewEngineering Manager JobotEngineering ManagerTysons, VA$180,000–$230,000 / 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. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.
NewTax Manager JobotTax ManagerTowson, MD$180,000–$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. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.
NewTax Manager (mostly Remote) JobotTax Manager (mostly Remote)Frederick, MDRemote$115,000–$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. Proven experience with 1031 Exchanges, tax planning, federal and state tax, income tax preparation, gift tax, S Corp, tax returns, and corporate tax returns.
NewSenior Public Relations Manager (Law Firm) JobotSenior Public Relations Manager (Law Firm)Washington, DC$175,000–$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. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.
NewSr Tax Manager JobotSr Tax ManagerRockville, MD$180,000–$225,000 / 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. We are a regional full service accounting and consulting firm with offices located Rockville, MD serving businesses in real estate, construction, financial services, high net worth individuals, etc.
NewSenior Tax Manager JobotSenior Tax ManagerGreat Falls, VA$130,000–$190,000 / 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. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.
NewBusiness Advisory Manager - Transactions JobotBusiness Advisory Manager - TransactionsWest McLean, VA$150,000–$200,000 / yearYou will provide the knowledge and expertise necessary to assist privately held companies, public companies, investors, private equity firms and lenders in organizing and completing both buy-side, sell-side and quality of earnings due diligence reviews. As a Business Advisory Manager – Transactions, you will be part of a team that is committed to assisting clients with critical business decisions by applying our insights, providing innovative solutions, and leveraging our experience in each unique situation.
NewConstruction Project Manager - Ground up Projects JobotConstruction Project Manager - Ground up ProjectsBethesda, MD$130,000–$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. Project Manager Opportunity with Leading National Commercial General Contractor in the DC/Maryland Area, ESOP, Profit Sharing and Extensive Opportunities for Growth!
NewConstruction Project Manager - Must have restaurant experience JobotConstruction Project Manager - Must have restaurant experienceGlenarden, MD$100,000–$125,000 / 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. We are a national Commercial General Contractor located in Lanham, Maryland specializing in the construction of retail, restaurants, and ground up projects seeking a Project Manager with restaurant experience.
NewSenior Construction Project Manager JobotSenior Construction Project ManagerJessup, MD$100,000–$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. The ideal candidate will have a proven track record in coordinating and overseeing a wide range of construction projects, from inception to completion.
NewCommercial Construction Assistant Project Manager – Mission Critical JobotCommercial Construction Assistant Project Manager – Mission CriticalFalls Church, VA$90,000–$110,000 / yearOur client is a well-established commercial general contractor delivering high-quality construction services across a diverse portfolio of projects, including mission critical, multifamily, institutional, and large-scale commercial developments. Information 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.
NewMechanical Assistant Project Manager JobotMechanical Assistant Project ManagerDulles, VA$120,000–$160,000 / yearReporting to Project Managers and Senior Project Managers, you’ll help drive day-to-day project coordination, document control, schedule tracking, and field communication while developing the technical and leadership skills to run projects independently. Information 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.
NewFencing Project Manager JobotFencing Project ManagerWashington, DC$100,000–$140,000 / 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. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.
NewTax Manager (Remote) JobotTax Manager (Remote)Ellicott City, MDRemote$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 offers a unique opportunity to work with high net worth individuals and corporations, providing comprehensive tax services and strategic planning.
NewManager of Client Relations (Nuclear Industry) JobotManager of Client Relations (Nuclear Industry)Parkville, MD$170,000–$230,000 / 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 represent a full portfolio of engineered products and services, working closely with engineering, manufacturing, and project teams to deliver high impact solutions to clients.
NewSenior 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!
NewSenior BAS/HVAC Controls Project Manager JobotSenior BAS/HVAC Controls Project ManagerBaltimore, MD$140,000–$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. PM on our team, you will be responsible for overseeing all phases of assigned projects—including new construction, renovations, and upgrades—ensuring they are completed on time, within budget, and to client expectations in the Ft. Meade and Baltimore area.
NewBAS/HVAC Controls Project Manager JobotBAS/HVAC Controls Project ManagerBaltimore, MD$120,000–$135,000 / 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. As a PM on our team, you will be responsible for overseeing all phases of assigned projects—including new construction, renovations, and upgrades—ensuring they are completed on time, within budget, and to client expectations in the Ft. Meade and Baltimore area.
NewIT Operations Manager The Midtown GroupIT Operations ManagerWashington, DC$90,000–$115,000 / yearFull timeYou'll partner closely with leadership, vendors, and internal stakeholders to deliver exceptional user experiences, modernize processes, and ensure operational excellence across a hybrid workforce. Lead large-scale device deployment initiatives and workforce onboarding efforts in partnership with managed service providers and internal teams.
NewTax Supervisor/ Tax Manager JobotTax Supervisor/ Tax ManagerRockville, MD$110,000–$175,000 / 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. We are a trusted MD-based tax and wealth management firm with a team of dedicated professionals committed to helping individuals, families, and businesses achieve financial clarity and success.
NewREMOTE - Senior Tax Manager - Flowthroughs JobotREMOTE - Senior Tax Manager - FlowthroughsBaltimore, MDRemote$170,000–$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. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.
NewAudit Manager (Construction) JobotAudit Manager (Construction)Gaithersburg, MD$110,000–$150,000 / year
NewProject Manager - Commercial Roofing JobotProject Manager - Commercial RoofingClinton, MD$100,000–$140,000 / 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. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.
NewAssistant Project Manager-Commercial Construction JobotAssistant Project Manager-Commercial ConstructionBaltimore, MD$70,000–$85,000 / yearA day in the life of an Assistant Project Manager involves providing assistance to the Project Manager through construction planning, scheduling equipment deliveries, facilitation document distribution, and serving as a liaison between project team members and the community with the common goal of promoting the interests of both the firm and clients in all matters. MCN Assistant Project Managers work directly with the Project Managers, Superintendents, and Project Executives to provide technical expertise regarding cost estimates, negotiate contracts, change orders, and establish project objectives to ensure project success.
Senior Capture Manager CredenceSenior Capture ManagerMcLean, VAWe are looking for self-motivating employees who are proficient in and can lead all aspects of the pre-award capture lifecycle in areas of Defense and Military, to include opportunity identification, research, teaming conversations, negotiations, and proposal leadership (working closely with a proposal team). Must be experienced with leading task order capture efforts for one or more large-scale Defense and Military IDIQ contracts, to include developing overall IDIQ capture strategies, creatively and dynamically organizing efforts for maximum efficiency, and driving actions and priorities.
Proposal Manager CredenceProposal ManagerMcLean, VAManage and write small- to large-scale strategic proposals to primarily Federal government agencies, both independently (completing all elements to include storyboarding, facilitation of SME solution development, copy editing, Word processing, template formatting, etc.) and as part of a proposal team (managing technical writers, book bosses, etc.). Accomplished writer with in-depth experience creating proposal related documents, i.e., compliance matrices, win theme/strength/capability matrices, proposal outlines, schedules, proposal related questions, storyboards, color review documents, final proposal documents, and oral presentation materials.