Senior System Engineer Viken DetectionSenior System EngineerBurlington, MA$105,000–$155,000 / yearDefining/documenting baseline requirements which may include analysis of customer/systems requirements; CONOPS development; establishing and documenting derived and decomposed requirements for different subsystems and disciplines (EE, ME, Software). Working with development team in establishing systems design including use cases/user stories, preliminary and detailed design, system architecture, and internal and external interfaces.
Model-Based Systems Engineer (MBSE) GCR Professional ServicesModel-Based Systems Engineer (MBSE)Woburn, Massachusetts$75–$90 / hourContractorRole can be Hybrid, TBD The Systems Engineer should have experience architecting systems, working across the Systems Engineering Lifecycle, and in Digital Engineering/Model-Based Systems Engineering (MBSE) achieving architectural integrity and traceability through requirements analysis, system and software development and production system deployment. The ideal candidate will be well-versed in Systems Engineering techniques, Modeling and Simulation, and Digital Engineering/MBSE and be excited about opportunities to mentor more junior staff and help foster growth of subject matter expertise across the organization.
Systems Engineer, Principal - TS DCS CorporationSystems Engineer, Principal - TSBedford, MA$123,639–$194,000 / yearC3BM’s main efforts are Architecture and Systems Engineering (ASE), Operational Response Team (ORT), and multiple mission integration teams such as Air, Maritime, and multiple acquisitions consisting of both the Advanced Battle Management System (ABMS) and Space. The MIT is responsible for translating operational requirements into technical solutions, developing integrated architecture, assessing risks, supporting acquisition execution strategies, and coordinating test and evaluation activities to ensure capabilities are delivered to operational users.
NewSystems Engineer, Senior - TS DCS CorporationSystems Engineer, Senior - TSBedford, MA$90,220–$175,000 / yearThe MIT is responsible for translating operational requirements into technical solutions, developing integrated architectures, assessing and mitigating risks, supporting acquisition execution strategies, and coordinating test and evaluation activities to ensure capabilities are delivered to operational users. C3BM’s main efforts are Architecture and Systems Engineering (ASE), Operational Response Team (ORT), and multiple mission integration teams such as Air, Maritime, and multiple acquisitions consisting of both the Advanced Battle Management System (ABMS) and Space.
Systems Engineer, Journeyman DCS CorporationSystems Engineer, JourneymanBedford, MA$96,757–$145,000 / yearThe MIT is responsible for translating operational requirements into technical solutions, developing integrated architectures, assessing and mitigating risks, supporting acquisition execution strategies, and coordinating test and evaluation activities to ensure capabilities are delivered to operational users. C3BM’s main efforts are Architecture and Systems Engineering (ASE), Operational Response Team (ORT), and multiple mission integration teams such as Air, Maritime, and multiple acquisitions consisting of both the Advanced Battle Management System (ABMS) and Space.
Sr Specialist, Systems Engineer - Space Systems (2nd Shift) : Sign-on bonus ($20K max) L3Harris TechnologiesSr Specialist, Systems Engineer - Space Systems (2nd Shift) : Sign-on bonus ($20K max)Wilmington, MA$106,500–$197,500 / yearPlease click here for the E-Verify Poster in English or Spanish . The ideal candidate for this position will be proficient in all aspects of the systems engineering process, will have direct and significant experience designing and testing complex systems, and will be comfortable coordinating teams of technical personnel.
Lead, Systems Engineer (Space Systems) - MBSE : Sign-on bonus ($30K max) L3Harris TechnologiesLead, Systems Engineer (Space Systems) - MBSE : Sign-on bonus ($30K max)Wilmington, MA$127,500–$236,500 / yearPlease click here for the E-Verify Poster in English or Spanish . The ideal candidate for this position will be proficient in all aspects of the systems engineering process, will have direct and significant experience designing and testing complex systems, and will be comfortable coordinating teams of technical personnel on space applications.
NewSystems Engineer, Junior - TS DCS CorporationSystems Engineer, Junior - TSBedford, MA$73,160–$115,000 / yearThe C2ISR Division provides worldwide life cycle support across the spectrum of the C2ISR capabilities based enterprise; including supply, distribution, materiel management, acquisition, system engineering and maintenance, financial planning and budgeting, security, flight test, and contracting functions. Experienced in requirements development, production and deployment, and operation and support, architectures development & implementation, modeling & simulation including but not limited to Model Based Systems Engineering principles, verification & validation, technical data package development and sustainment, and principles of configuration management.
NewAdvanced MBSE Systems Engineer The Computer Merchant, LtdAdvanced MBSE Systems EngineerDedham, MA$60–$62.98 / hourContractorAs a Model-Based Systems Engineer for Nuclear Command, Control and Communications (NC3), you'll be a member of a cross-functional team responsible for designing, implementing, and deploying the next generation of Strategic Weapon Systems using cutting-edge MBSE methodologies and digital engineering practices. * While an hourly range is posted for this position, an eventual hourly rate is determined by a comprehensive salary analysis which considers multiple factors including but not limited to: job-related knowledge, skills and qualifications, education and experience as compared to others in the organization doing substantially similar work, if applicable, and market and business considerations.
Principal Radar Systems Engineer GCR Professional ServicesPrincipal Radar Systems EngineerWoburn, MassachusettsContractorClient is focused on delivering National Defense capabilities by driving mission-focused strategies to develop advanced technology systems enabling enduring products and solutions focused on achieving the customer vision. Applicants are expected to be self-motivated, detail oriented and have a demonstrated ability to effectively communicate with all levels of management and individual contributors on the program team through strong written and verbal communication skills.
NewSystems Engineer, Senior DCS CorporationSystems Engineer, SeniorBedford, MA$90,220–$145,000 / yearThe Aerospace Management Systems Division programs, develops, delivers, and sustains air traffic management, CNS/ATM avionics expertise, and weather sensing and forecast capabilities, enabling military, civil, allied, and Foreign Military Sales customers to achieve their mission. Develop and maintain system architectures, interface definitions, and Model-Based Systems Engineering (MBSE) artifacts supporting Air Traffic Control (ATC), Command & Control (C2), communications, networking, tactical data links, and radio systems.
Lead, Embedded Software Engineer (Optical Space Systems) : Sign-on bonus ($30K max) L3Harris TechnologiesLead, Embedded Software Engineer (Optical Space Systems) : Sign-on bonus ($30K max)Wilmington, MA$135,000–$250,500 / yearL3Harris Space and Mission Systems is seeking a Lead, Embedded Software Engineer for our Wilmington, MA location to join a talented team of experts developing Embedded Flight Software for space-based imaging payloads. Experience with embedded command and control of mechanisms (e.g., shutters, motors, gimbals), embedded controllers (e.g., PIC, STM, TMS), serial communications (e.g., CAN, TCP/IP, RS422), and distributed messaging (TCP/UDP).
Lead, IPTL Software Engineer (Optical Space Systems) : Sign-on bonus ($30K max) L3Harris TechnologiesLead, IPTL Software Engineer (Optical Space Systems) : Sign-on bonus ($30K max)Wilmington, MA$135,000–$250,500 / yearThe ideal candidate has a strong background in space domain, including embedded and real-time software, RTOS environments such as VxWorks, and development of EGSE and test systems for optical payload integration and test. Bachelor’s degree in Computer Engineering, Computer Science, or related field with 9+ years of relevant experience; OR Graduate Degree with 7+ years of relevant experience; OR 13+ years of relevant experience in lieu of a degree.
Senior Systems Engineer The Computer Merchant, LtdSenior Systems EngineerDedham, MA$80–$91 / hourContractorWhile an hourly range is posted for this position, an eventual hourly rate is determined by a comprehensive salary analysis which considers multiple factors including but not limited to: job-related knowledge, skills and qualifications, education and experience as compared to others in the organization doing substantially similar work, if applicable, and market and business considerations. As a Systems Engineer, working on the Encryptor Manager, you'll be a member of a cross functional team responsible for developing mission critical Cybersecurity Manager Applications for a rapidly growing product line.
GNC SYSTEMS ANALYST ENGINEER GCR Professional ServicesGNC SYSTEMS ANALYST ENGINEERCambridgeContractorTime domain simulations, covariance-based methods, and Monte Carlo dispersed analysis will be used to assess and tune system performance and to document analysis results. The analysis will include assessment of control, navigation, and guidance system performance, verification of algorithms and algorithm requirements, and analysis of flight dynamics and trajectory dispersions.
Lead, Integration & Test Engineering (Space-Based Optical Systems) : Sign-on bonus ($30K max) L3Harris TechnologiesLead, Integration & Test Engineering (Space-Based Optical Systems) : Sign-on bonus ($30K max)Wilmington, MA$122,000–$227,000 / yearPlease click here for the E-Verify Poster in English or Spanish . The successful candidate will support the program technical leads (Lead or Chief Systems Engineer, IPT Lead) by performing technical analysis, managing specifications, and generating design review and technical documents.
Field Service Engineer/Technician Matec Instrument Companies, Inc.Field Service Engineer/TechnicianNorthborough, MA$85,000–$120,000 / yearMatec builds complex ultrasonic testing systems used by major aerospace and industrial manufacturers. If you know how machines work—and enjoy figuring out why they don’t—this is your kind of role.
Specialist, Project Engineering (Space Systems) : Sign-on bonus ($15K max) L3Harris TechnologiesSpecialist, Project Engineering (Space Systems) : Sign-on bonus ($15K max)Wilmington, MA$92,500–$171,500 / yearThis role will be responsible for full lifecycle Project Engineering support for a range of software and hardware development, assembly, and integration and test efforts to deliver critical space-based remote sensing systems for our customers. Understands how to develop a schedule using Earned Value on a program with $5M-$20M in value and manage a project using the Earned Value Indicators on a DCMA surveilled program (highest rigor applied).
Associate Vice President Structural Engineer / New England Infrastructure Practice Lead The LiRo GroupAssociate Vice President Structural Engineer / New England Infrastructure Practice LeadNewton, MA$180,000–$210,000 / yearRecently, Global Infrastructure Solutions Inc. (GISI), the parent company of The LiRo Group and Hill International, Inc., consolidated a portion of the highly experienced staff of both firms in the Northeast to create a larger, more efficient, and cost-effective team. This role represents a unique opportunity to help shape and grow LiRo-Hill’s presence in New England, with a focus on public sector infrastructure and municipal clients, while collaborating with a deep, multidisciplinary bench across the region.
System Test Engineer CollaberaSystem Test EngineerTewksbury$55–$60 / hourTemporaryContractorThe contractor will support hands-on testing in a system test lab/integration test environment and will work with airport checkpoint screening equipment, test workstations, software applications, and related system components. This role will help ensure that checkpoint systems, subsystems, software, hardware, and integrated workflows meet functional, performance, reliability, and operational requirements.
Robotics/Controls Engineer GCR Professional ServicesRobotics/Controls EngineerBurlington, Massachusetts$100,000–$140,000 / yearCollaborate with the Manager of Controls Engineering to design and implement advanced control systems for robotic manipulators and electromechanical systems. Responsibilities include motion control and servo tuning, dynamic modeling, simulation in MATLAB, and real-time software implementation.
NewRF Engineer III (NH) - Security Clearance GCR Professional ServicesRF Engineer III (NH) - Security ClearanceHudson, New HampshireContractorCollaboration: Collaborate with cross-functional teams, including electrical engineers, mechanical engineers, software engineers, and project managers, to ensure successful integration of the Antennas. *Testing and Measurement Equipment: - Experience with Antenna/RF testing and measurement equipment, such as network analyzers, spectrum analyzers, signal generators, and oscilloscopes.
NewSoftware Development Engineer JobotSoftware Development EngineerBoston, MA$65–$80 / hourDevelopers at this level are building greater independence, taking ownership of small to medium-sized work items, and strengthening their core engineering skills across multiple application layers, including user interfaces, services, APIs, and data. Our teams include professionals across software engineering, product development, clinical informatics, research, and healthcare technology who share a commitment to reducing complexity and improving outcomes for patients and providers.
Senior Mechanical Engineer SymboticSenior Mechanical EngineerLexington, MAApplying next-gen technology, high-density storage and machine learning to solve today's complex distribution challenges, Symbotic enables companies to move goods with unmatched speed, agility, accuracy and efficiency. Cross-Functional Collaboration: Work closely with electrical, software, controls, manufacturing, and quality engineering teams to ensure seamless integration and product success. .
NewControls Engineer- Building Automation JobotControls Engineer- Building AutomationBoston, MA$90,000–$120,000 / yearAbout the Role: We’re seeking a Building Controls Engineer to support the design, programming, commissioning, and ongoing support of building automation systems (BAS) for commercial clients in the Boston area. 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.
NewSenior Quality Engineer JobotSenior Quality EngineerDanvers, MA$110,000–$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. 3. Proven experience in driving corrective actions, conducting root cause analysis, managing nonconformances, and overseeing the quality of electro-mechanical products.
MS Azure Engineer Continental ResourcesMS Azure EngineerBedford, MAFull timeA successful candidate has strong experience with Azure Cloud services, is self-driven, enjoys learning new technologies, and is willing to stretch themselves to become a stronger engineer and mentor others around them to do the same. Developing effective cloud infrastructure, enforcing good architectural principles, providing technical oversight, and ensuring security best practices are implemented and followed.
NewCivil Design Engineer (Land Development) JobotCivil Design Engineer (Land Development)Kingston, MA$75,000–$115,000 / 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 specialize in field-to-finish workflows and utilize a wide variety of technologies, equipment, and software to enable us to be productive and efficient.
Principal Analog Mixed Signal ASIC Layout Engineer GCR Professional ServicesPrincipal Analog Mixed Signal ASIC Layout EngineerCambridge, MassachusettsRemoteContractorA successful candidate will assist ASIC development through creating custom analog layouts, floor planning entire chips, high level problem solving, and executing tape outs. ¿ Perform or guide physical layout, including floor-planning, and simulate circuits using extracted parasitic, contribute to design-for-test development.
Cyclotron Engineer SOFIECyclotron EngineerHaverhill, MA$90,000–$100,000 / yearAdditionally, the Cyclotron-Support Engineer I is responsibility for first-line troubleshooting, maintenance, and repair of equipment associated with manufacturing, including manipulator arms, lead shielded hot cells, radiosynthesizers, etc. Perform diagnosis and repair on the following: Electronic equipment, electro-pneumatic systems, high vacuum systems, deionized chilled water systems, high voltage, target, and high-power RF systems.
NewGuidance, Navigation & Control Engineer for Space GCR Professional ServicesGuidance, Navigation & Control Engineer for SpaceCambridge, MassachusettsRemoteContractorThe applicant will join a team of highly motivated Guidance, Navigation and Control (GNC) Engineers in the design, development, test, implementation and operation of spacecraft GNC systems for Low Earth Orbit space missions. Qualifications should include: MS degree in a relevant technical field of study, plus at least 4 years applicable experience or a PhD degree in a relevant technical field of study.
Senior Electrical Engineer, Embedded and Controls Focused Corporate Solutions TechSenior Electrical Engineer, Embedded and Controls FocusedHudson, MA$130,000–$160,000 / yearFull timeThis is a hands-on engineering role responsible for designing, developing, and delivering robust embedded and control system solutions for innovative commercial and government technology programs. This role requires ownership of designs from concept through prototype, testing, validation, and production while collaborating closely with multidisciplinary engineering teams.
Quality Engineer III (NH) GCR Professional ServicesQuality Engineer III (NH)Hudson, New Hampshire$45–$58 / hourContractorThis role will participate and/or lead failure analysis in manufacturing and for field failures, develop troubleshooting & repair schemes, develop manufacturing process controls and documentation, interface with manufacturing and quality personnel to train and transfer processes & knowledge for successful volume production launches, and engage with suppliers as needed to drive improvement and implement process controls. This is a hands-on role that works with a team of quality engineers, technicians and inspectors that are engaged through the entire life cycle of product, starting during development, continuing with transitioning of product to manufacturing, and then supporting the continuous manufacture of product.
Embedded Software Engineer (Avionics) GCR Professional ServicesEmbedded Software Engineer (Avionics)Cambridge, MassachusettsContractorExcellent development and troubleshooting skills on embedded targets ¿ Excellent knowledge of OS coding techniques, interfaces, hardware subsystems and driver development ¿ Development experience with device drivers, board support package, boot code and knowledge of embedded system buses and protocols (e.g. GCC, LLVM), static analysis tools, dynamic analysis, and QEMU based development are preferred ¿ Knowledge and experience with software configuration management tools, defect tracking tools, and peer review processes.
NewManufacturing Test Engineer (NH) GCR Professional ServicesManufacturing Test Engineer (NH)Hudson, New HampshireContractorOverview: Client is seeking a Manufacturing Test Engineer or Test Technician to perform debug and validation efforts for Intel-based server motherboards. - Experience doing root-cause analysis and complex debug activities on motherboard platforms (Intel server motherboard platforms is preferred) .
Flight Software Engineer GCR Professional ServicesFlight Software EngineerCambridge, MassachusettsContractorClient is seeking a software engineer with an B.S. or a M.S. in Aerospace Engineering, Electrical Engineering, Systems Engineering, Computer Science or equivalent. Integration and test will include everything from unit testing, static and dynamic testing, integration and interface testing, debugging, and defect resolution.
Manufacturing Engineer III (NH) GCR Professional ServicesManufacturing Engineer III (NH)Hudson, New HampshireContractorYou will collaborate with cross-functional teams, including design engineers, production personnel, and quality assurance, to optimize manufacturing operations and drive continuous improvement initiatives. As a Manufacturing Engineer, your primary responsibility will be to develop and improve manufacturing processes and systems to ensure the efficient and cost-effective production of defense and aerospace products.
Production Support Engineer Clandica incProduction Support EngineerBoston, MA$50–$55 / hourContractorp tabindex="0">The Production Support Engineer will be responsible for managing daily production support issues across Risk and Investments systems, monitoring applications and system health, investigating and resolving technical errors, performing root cause analysis for production issues, and documenting processes related to production support tasks. This role will also involve collaborating with IT partners to automate software delivery processes and supporting users with internal development platform and tools.
Lead Firmware Engineer GCR Professional ServicesLead Firmware EngineerWoburn, MassachusettsContractorOur clients System Development Division (SDD) is focused on delivering National Defense capabilities by driving mission-focused strategies to develop advanced technology systems enabling enduring products and solutions focused on achieving the customer vision. Applicants are expected to be self-motivated, detail oriented and have a demonstrated ability to effectively communicate with all levels of management and individual contributors on the program team through strong written and verbal communication skills.?.
Specialist, Embedded Software Engineer (Optical Payload Integration) : Sign-on bonus ($15K max) L3Harris TechnologiesSpecialist, Embedded Software Engineer (Optical Payload Integration) : Sign-on bonus ($15K max)Wilmington, MA$97,000–$180,000 / yearL3Harris Space and Airborne Systems is seeking an Embedded Software Integration Engineer for our Wilmington, MA location to join a team of experts developing Embedded Flight Software for space-based imaging payloads. Bachelor’s degree in Computer Engineering, Computer Science, or related field with 4+ years of relevant experience; OR Graduate Degree with 2+ years of relevant experience; OR 8+ years of relevant experience in lieu of a degree.
NewManufacturing Engineer III| (NH) GCR Professional ServicesManufacturing Engineer III| (NH)Hudson, New HampshireContractorYou will collaborate with cross-functional teams, including design engineers, production personnel, and quality assurance, to optimize manufacturing operations and drive continuous improvement initiatives. As a Manufacturing Engineer, your primary responsibility will be to develop and improve manufacturing processes and systems to ensure the efficient and cost-effective production of defense and aerospace products.
Production Support Engineer Clandica IncProduction Support EngineerBoston, MA$55–$60 / hourContractorp tabindex="0">The Production Support Engineer will be responsible for managing daily production support issues across Risk and Investments systems, monitoring applications and system health, investigating and resolving technical errors, performing root cause analysis for production issues, and documenting processes related to production support tasks. This role will also involve collaborating with IT partners to automate software delivery processes and supporting users with internal development platform and tools.
NewNetwork Engineer, Signal Source Solutions Communication Technology ServicesNetwork Engineer, Signal Source SolutionsMarlborough, MA$105,000–$135,000 / yearThe Network Engineer will have extensive experience in both in-building cellular system architecture as well as in IP networking, firewall setup, VPN configurations, and other skills needed to design, configure and support the front haul and backhaul networks used to interconnect the RF components of an in-building cellular network. Communication Technology Services (CTS ) is one of the largest integrators and managed service providers for enterprise cellular networks in the U.S., specializing in the design, installation and support of distributed antenna system (DAS), small cell, and 4G/5G private cellular networks for enterprise customers.
Cybersecurity Engineer, Senior - Secret DCS CorporationCybersecurity Engineer, Senior - SecretBedford, MA$123,639–$210,000 / yearEssential Job Functions : Assist in the development of security documentation including System Security Management Plans, Program Protection Plans, Security Risk Analyses, OPSEC Plans, and other required system security engineering artifacts. The Electronic Systems System (ESS) Division aka Force Protection Division's mission responsibility is to manage and execute the modernization, design, development, testing, fielding, and sustainment of the various software and hardware within the ESS Portfolio.
Cybersecurity Engineer, Journeyman - Secret DCS CorporationCybersecurity Engineer, Journeyman - SecretBedford, MA$90,220–$185,000 / yearAssist in the development of security documentation including System Security Management Plans, Program Protection Plans, Security Risk Analyses, OPSEC Plans, and other required system security engineering artifacts. The Electronic Systems System (ESS) Division aka Force Protection Division's mission responsibility is to manage and execute the modernization, design, development, testing, fielding, and sustainment of the various software and hardware within the ESS Portfolio.
NewCybersecurity Engineer DCS CorporationCybersecurity EngineerBedford, MA$90,220–$175,000 / yearUnder the Department of the Air Force Program Executive Office for Command, Control, Communication, and Battle Management (DAF PEO C3BM), Kessel Run technologies make up the DAF BATTLE NETWORK, the systems-of-systems designed to help the Joint Force make operational decisions faster than our adversaries. The Assured Compliance Assessment Solution (ACAS) Cybersecurity Engineer will be a member of the Air Operation Center (AOC) cybersecurity team and will be responsible for assisting with the implementation, maintenance, and operation of the Assured Compliance Assessment Solution (ACAS) suite of tools.
CAD / PCB Engineer II GCR Professional ServicesCAD / PCB Engineer IIAndover, MassachusettsContractorJoin a focused team of engineers bringing highly complex, dense, rugged and secure electronic packaging solutions to our nation’s warfighters and first responders. • Ability to work in a fast-paced engineering services group supporting multiple time zones within the US and internationally.
Application Engineer GCR Professional ServicesApplication EngineerBillerica, Massachusetts$95,000–$130,000 / yearJob Summary: This role is responsible for translating customer technical requirements into product specifications, designing and validating new features, and developing custom mechanical components. It also includes maintaining technical documentation, providing on-site support, and collaborating cross-functionally to ensure successful product implementation.
NewDesign Quality Assurance Engineer Corporate Solutions TechDesign Quality Assurance EngineerBillerica, MA$140,000–$170,000 / yearFull timeWorking closely with Design Engineers, Program Managers, Manufacturing Engineering, and Quality teams, you will ensure products progress from concept through design transfer while meeting all regulatory, customer, and internal quality requirements. This position plays a critical role in ensuring Design Control compliance for contract development and manufacturing programs supporting the medical device, aerospace, and defense industries.
General/Interdisciplinary Engineer, Senior - Secret DCS CorporationGeneral/Interdisciplinary Engineer, Senior - SecretBedford, MA$90,220–$170,000 / yearConduct systems architectural analyses to include system design/design feasibility and state-of-the-art assessment to Produce architectures, document planned and existing systems, determine deficiencies, develop alternatives, recommend solutions, and support development of a plan to implement the chosen solution per acquisition and sustainment system engineering processes. Analysis of Alternatives (AoA), Systems Engineering Plan (SEP)…), systems review and analysis with written reporting, briefing, and artifact development as required for all of the technical specialty areas defined in this section; and the planning and execution of all necessary technical reviews, assessments, and interchange meetings (e.g.