NewPersonal Trainer, Sports Club Boston EquinoxPersonal Trainer, Sports Club BostonBoston, MA$63.50–$72 / hourUnder the guidance of two dedicated managers you will develop and refine an approach to programming, education, business, and financial planning that ensures your Personal Training career is as unlimited as your passion. Bonus opportunities for eligible trainers such as, but not limited to: New Trainer Bonus, Tri Annual Incentive Bonus, Senior Trainer Annual Bonus, and Member Referral Bonus.
NewPEPI, Senior Associate - M&A and Performance Improvement - Sports, Media, and Entertainment Alvarez & Marsal Holdings LLCPEPI, Senior Associate - M&A and Performance Improvement - Sports, Media, and EntertainmentBoston, MA$100,000–$170,000 / yearStrong oral and written communication skills with the ability to lead client interactions, facilitate working sessions, present findings to senior stakeholders, and translate complex analytical outputs into clear, actionable insights and executive-ready deliverables across integration, carve-out, and performance improvement engagements. Own and maintain key client deliverables throughout the engagement, including synergy and performance improvement models, separation and one-time cost models, integration and carveout trackers, and other workstream outputs, ensuring accuracy and executive-ready quality at every stage of the transaction lifecycle.
NewSenior Project Executive - Sports Gilbane Building CompanySenior Project Executive - SportsBoston, MA$200,000–$270,000 / yearOversees schedule planning and execution of multiple projects; accountable for the management of schedule risks that lead to erosion and provides guidance in strategies and actions to prevent risk . Preferred locations are Baltimore, Arlington, Philadelphia, and Newark, though we are open to considering candidates based near other Gilbane locations throughout the East Coast and Midwest.
Sr. Technical Architect Sports + Recreation CHA Consulting IncSr. Technical Architect Sports + RecreationBoston, MA$130,000–$150,000 / yearTechnical Architect - Sports + Recreation to join our Sports Team in Atlanta, GA or Boston, MA, and oversee the design of sports venues, team facilities, stadium enhancements, and recreation facilities. This is your opportunity to lead impactful sports facility projects, collaborate with multidisciplinary experts, and help create environments that energize athletes and inspire fans.
Senior Project Executive Sports Gilbane Building CoSenior Project Executive SportsBoston, MA$200,000–$270,000 / yearOversees schedule planning and execution of multiple projects; accountable for the management of schedule risks that lead to erosion and provides guidance in strategies and actions to prevent risk. Preferred locations are Baltimore, Arlington, Philadelphia, and Newark, though we are open to considering candidates based near other Gilbane locations throughout the East Coast and Midwest.
NewSenior Project Manager - Sports Gilbane Building CompanySenior Project Manager - SportsBoston, MA$140,000–$195,000 / yearThe role is responsible for setting strategic direction and ensuring successful execution of complex construction projects such as stadiums, arenas, training complexes, athletic venues, and more! Creates CPM schedule for large and/or complex projects; accountable for recognizing the potential for schedule impacts and drafting prevention/ mitigation plans.
Senior Project Manager Sports Gilbane Building CoSenior Project Manager SportsBoston, MA$140,000–$195,000 / yearThe role is responsible for setting strategic direction and ensuring successful execution of complex construction projects such as stadiums, arenas, training complexes, athletic venues, and more! Creates CPM schedule for large and/or complex projects; accountable for recognizing the potential for schedule impacts and drafting prevention/ mitigation plans.
Sr. Mgr, Prod/Pipe Comm Spine/Sports/CMF Johnson & JohnsonSr. Mgr, Prod/Pipe Comm Spine/Sports/CMFRaynham, MA$122,000–$212,750 / yearRequired Skills: Preferred Skills: Brand Reputation Management, Communications Measurement, Content Creation, Corporate Communications Management, Corporate Communications Strategy, Corporate Management, Cultural Competence, External Communication, Innovation, Market Research, Media Relations, Organizing, Relationship Building, Social Awareness, Stakeholder Engagement, Strategic Thinking, Technical Credibility. This position plays a critical role in supporting product launches, advancing pipeline visibility, and strengthening franchise credibility by translating complex clinical and technical information into clear, compelling communications that drive understanding and engagement.
Sr. Strategic Account Executive - US HOKA Sport & Outdoor Deckers Outdoor CorpSr. Strategic Account Executive - US HOKA Sport & OutdoorMARemote$87,900–$118,600 / yearYou'll collaborate cross-functionally, apply analytical rigor, and execute with discipline to support long-range and seasonal business planning, forecasting, and order management. Build and nurture effective relationships across merchandising, marketing, operations, planning, leadership, and field teams to support and grow ecommerce accounts.
BOSTON PARKS & RECREATION - ALMONT PARK SPORTS CENTER City of BostonBOSTON PARKS & RECREATION - ALMONT PARK SPORTS CENTERRoxbury, MassachusettsOur department oversees 217 city parks, playgrounds, and athletic fields; two golf courses; 65 squares; 17 fountains; 75 game courts; 16 historic and three active cemeteries; urban wilds; four high school athletic fields; and approximately 125,000 trees. Overview: The Boston Parks and Recreation Department provides residents and visitors with clean, green, safe, and accessible open spaces across 2,300 acres of parkland throughout the city.
BOSTON PARKS & RECREATION - WHITE STADIUM SPORTS CENTER City of BostonBOSTON PARKS & RECREATION - WHITE STADIUM SPORTS CENTERJamaica Plain, MassachusettsOur department is responsible for maintaining 217 city parks, playgrounds, and athletic fields, two golf courses, 65 squares, 17 fountains, 75 game courts, 16 historic and three active cemeteries, urban wilds, four high school athletic fields, and approximately 125,000 trees. Overview: The Boston Parks and Recreation Department provides residents and visitors with clean, green, safe, and accessible open spaces across 2,300 acres of parkland throughout the city.
BOSTON PARKS & RECREATION - RONAN PARK SPORTS CENTER City of BostonBOSTON PARKS & RECREATION - RONAN PARK SPORTS CENTERBoston, MassachusettsOverview: Boston Parks & Recreation's youth recreation series and events improve the quality of life and promote economic balance by providing convenient, free, high-quality, instructional, and team-building programs to underserved and economically disadvantaged communities. These programs serve several demographics, including at-risk populations and children whose families cannot afford summer sports camps, leagues, or sports-specific series.
Sports + Recreational Designer CHA Consulting IncSports + Recreational DesignerMA$90,000–$110,000 / yearIn this role, you will contribute to the planning, design, and delivery of sports and recreation facilities-supporting projects that range from competitive stadiums and multi-use athletic complexes to community fields and training venues. What You''ll Do: Independently complete engineering design, technical analysis, and preparation of plans, specifications, and reports for sports facility projects including athletic field layouts, playing surfaces, spectator amenities, and supporting infrastructure.
Senior Planner, Sport Planning, Sportswear - Converse NIKE IncSenior Planner, Sport Planning, Sportswear - ConverseBoston, MAYou will drive seasonal and long‑term planning, build consumer‑right and marketplace‑relevant forecasts, and partner cross‑functionally to support strong offense execution across the Apparel & Accessories categories. We offer a number of accommodations to complete our interview process including screen readers, sign language interpreters, accessible and single location for in-person interviews, closed captioning, and other reasonable modifications as needed.
Boston Parks & Recreation Department Garvey Park Sports Center City of BostonBoston Parks & Recreation Department Garvey Park Sports CenterRoxbury, MassachusettsKey Duties and Responsibilities: The Junior Sports Specialist position at the Garvey Park Sports Center is a valuable opportunity for youth employees to gain hands-on experience in recreation, leadership, and teamwork. - Desire to Work with Children: Candidates must have a genuine interest and enthusiasm for working with children, including both able-bodied and disabled youth, fostering an inclusive and supportive environment.
Boston parks & Recreation East Boston Sports Center City of BostonBoston parks & Recreation East Boston Sports CenterBoston, MassachusettsServing various demographics, including at-risk populations and children whose families cannot afford summer sports camps, leagues, or sports-specific programs, these events and activities offer a vital opportunity to bring safe, enriching programs to parks in densely populated areas. Overview: Boston Parks & Recreation's youth recreation series and events improve lives and contribute to economic balance by providing convenient, free, quality, instructional, and team-building programs to underserved and economically disadvantaged communities.
Boston Parks & Recreation Marcella Playground Sports Center City of BostonBoston Parks & Recreation Marcella Playground Sports CenterBoston, MassachusettsKey responsibilities include: Assisting with Children: Supporting and guiding children during program activities, offering help when needed to ensure everyone is engaged and safe. Desire to Work with Children: Candidates must have a genuine interest and enthusiasm for working with children, including both able-bodied and disabled youth, fostering an inclusive and supportive environment.
Personal Trainer, Sports Club Boston Equinox Holdings IncPersonal Trainer, Sports Club BostonBoston, MA$63.50–$72 / hourUnder the guidance of two dedicated managers you will develop and refine an approach to programming, education, business, and financial planning that ensures your Personal Training career is as unlimited as your passion. Bonus opportunities for eligible trainers such as, but not limited to: New Trainer Bonus, Tri Annual Incentive Bonus, Senior Trainer Annual Bonus, and Member Referral Bonus.
Orthopedic Sports Medicine Surgeon - Northampton, MA (Mass General Brigham) Mass General BrighamOrthopedic Sports Medicine Surgeon - Northampton, MA (Mass General Brigham)Boston, MANorthampton sits in the heart of the Pioneer Valleyan energized, outdoor-forward region with a vibrant arts and food scene, excellent schools, and easy access to bigger cities without the daily grind. At Cooley Dickinson Hospital, weve cared for Western Massachusetts for more than 140 yearsknown for a collaborative culture, patient-first care, and strong relationships across the region.
Adjunct Instructor, Sports Management Courses, Quincy Campus - Quincy College Quincy CollegeAdjunct Instructor, Sports Management Courses, Quincy Campus - Quincy CollegeQuincy, MAThe College is seeking qualified applicants to teach Introductory Sports Management courses on ground at our Quincy Campus. ESSENTIAL FUNCTIONS: Provide high quality teaching/instructing to Quincy College studen.
NewSports & Fitness Instructor Opportunities Concorde EducationSports & Fitness Instructor OpportunitiesLynn, MA$50–$100 / hourAssignment offers remain contingent upon factors including program availability, instructor qualifications, school partner approval, scheduling compatibility, successful completion of any legally required background review or clearance process, and final written assignment confirmation. Concorde Education is seeking experienced and engaging Sports & Fitness Instructors who are interested in providing instructional services for after-school enrichment programs at partner schools.
Regional Sales Manager, Shoulder & Sports Med - New England Medacta Group SARegional Sales Manager, Shoulder & Sports Med - New EnglandMARemotePosition-Specific Requirements: Hospital Credentialing: You will be required to submit appropriate health documentation to include but not limited to vaccinations, TB testing results, titers, etc.) and complete enrollment processes for 3rd party Hospital Credentialing Groups (HCGs) which may include other requirements as listed by each credentialing group. Responsible for driving new business, activating underpenetrated markets, recruiting and developing channel partners, and ensuring flawless execution of Medacta's shoulder and sports strategy across hospitals, ASCs, and surgeon networks.
Paddle Sports Rental Supervisor - Waltham Location Charles River Recreation Inc - Paddle BostonPaddle Sports Rental Supervisor - Waltham LocationWaltham, MA$18–$22 / hourTemporarySupport water activities, including assisting in the rental process at the desk and on the dock, preparing equipment for lessons and tours, and ensuring operational rental equipment. We work with local non profits and community organizations to introduce more people to our local waterways and skiing areas for free or reduced pricing.
Affiliated Faculty, Sport Management Rivier UniversityAffiliated Faculty, Sport ManagementNashua, NHThe successful candidate will have earned a master's degree (doctoral degree preferred) and a demonstrated ability to communicate the value of Rivier's academic programs, teach on-campus courses over the course of an academic year, support students through advising and internships, and participate in several on-campus recruitment and enrollment related events. Rivier seeks to hire Affiliated Faculty in sport management to serve as externally engaged academic professionals who contribute to the intellectual vitality, market relevance, and sustainability of University academic programs.
Sr. CSV Validation Engineer GenezenSr. CSV Validation EngineerLexington, MA$115,000–$140,000 / yearNearby Indianapolis is home to professional and college sports teams, the Indy 500, a growing art community and the world's largest children's museum--to name just a few reasons why this area is a great place to live. Key deliverables are preparation of relevant documentation to meet regulatory requirements for new and existing products (Validation Plans, User Requirements Specifications (URS), Risk Assessments, IQ/OQ/PQ protocols and Traceability Matrices).
Senior Systems Integration QA/ Team Lead Catapult SportsSenior Systems Integration QA/ Team LeadBoston, MA$90,626–$181,252 / yearYou'll work cross-functionally with Product, Engineering, and Systems Engineering, and will be expected to spend time on-site with customer-facing colleagues to validate our solution under real-world conditions, including testing of performance, networking conditions, resiliency/failover, and operational workflows. Build and maintain a scalable QA device lab, including video inputs, cameras, encoders, networking, desktop applications and devices, to test a range of setups based on real customer usage.
Sportsbook Operations Senior Associate DraftKingsSportsbook Operations Senior AssociateBoston, MassachusettsSupport game day operations, ensuring smooth execution while responding to live moments, promotions, and in-game opportunities, including nights and weekends during peak seasons (for example, NFL and college football). You’ll play a hands-on role in executing key sports moments, including game day operations, while helping teams stay aligned and move with speed.
Senior Software Engineer Catapult SportsSenior Software EngineerBoston, MA$114,934–$230,900 / yearThe ideal candidate will have at least 5 years' industry experience working within teams delivering robust, scalable applications, services, and APIs using agile development practices, and with: Cross-platform development experience (Windows and Linux preferred). This role requires a candidate with excellent analytical skills, strong problem-solving capabilities, and demonstrated experience developing robust, efficient software, particularly with live video streams and performant applications.
Senior Software Engineer (GO) Catapult SportsSenior Software Engineer (GO)Boston, MA$112,934–$225,868 / yearBased in Boston, you will be a key player in planning, designing, building and testing the features of our next generation cloud platform that combines digital video assets, wearable data and athlete information to provide insights and analytics to coaching/support staff, sports scientists and athletes to assist in optimising athlete performance. In 12 months: You'll be leading the architectural design of a significant subsystem; taking a problem from whiteboard to production across our Go service estate, and shaping how we evolve federation patterns, offline-first edge architecture, and the data and entitlement model that underpins both our client applications and third party API integrations.
Athletic Trainer - School Sport Programs Peabody Public SchoolsAthletic Trainer - School Sport ProgramsPeabody, MARehabilitation & Prevention: Develop individualized rehabilitation plans, apply preventative measures (e.g., taping and bracing), and assist with fitness or conditioning programs. Injury Management: Evaluate and assess athletic injuries, administer first aid, and act as the primary medical responder for home and away athletic events.
Sportsbook Operations Senior Associate DraftKings IncSportsbook Operations Senior AssociateBoston, MASupport game day operations, ensuring smooth execution while responding to live moments, promotions, and in-game opportunities, including nights and weekends during peak seasons (for example, NFL and college football). You'll play a hands-on role in executing key sports moments, including game day operations, while helping teams stay aligned and move with speed.
NewSr Project Manager Gilbane Building CompanySr Project ManagerBoston, MA$145,000–$185,000 / yearGilbane is seeking a Senior Project Manager to serve as the on-site Gilbane manager, responsible for the overall direction, completion, and financial outcome of a large or complex construction project, or multiple small projects. Creates CPM schedule for large and/or complex projects; accountable for recognizing the potential for schedule impacts and drafting prevention/ mitigation plans.
Senior Cost Manager - Life Sciences Rider Levett Bucknall UK LtdSenior Cost Manager - Life SciencesBoston, MA$113,900–$151,700 / yearMinimum Experience required: 5-10 years' relevant experience in construction cost estimating of a variety of building types from program, conceptual, schematic, design development and construction document stages of design in elemental and CSI format for all architectural, structural, and civil components of new construction and renovation projects. Review construction plans and specifications during preconstruction to complete quantity take-offs and prepare estimates for all architectural, structural, and civil scopes from schematic through final design for new construction and renovation projects.
Senior Managing Scientist Biomechanics (Ph.D.) Exponent IncSenior Managing Scientist Biomechanics (Ph.D.)Natick, MA$180,000–$210,000 / yearYou will be involved in projects representing a broad range of client types and associated needs, such as human performance, health, and wellness technologies, consumer products, technology adoption and integration into niche (e.g., clinical, military, elite sports) markets, and digital health. For over five decades, we''ve connected the lessons of past failures with tomorrow''s solutions to advise clients as they innovate technologically complex products and processes, ensure the safety and health of their users, and address the challenges of sustainability.
NewSenior Director of Premium Services - Fenway Park AramarkSenior Director of Premium Services - Fenway ParkBoston, MA$140,000–$145,000 / yearThis role will provide strategic leadership and operational oversight for premium hospitality experiences across suites, clubs, restaurants, and catering operations throughout the New England District. The ideal candidate combines deep expertise in premium hospitality operations with strong business acumen, successfully balancing operational excellence, client relationships, and premium experiences.
Senior Design Engineer - AV/ Workplace One Diversified LLCSenior Design Engineer - AV/ WorkplaceBoston, MARequired Skills/Qualifications: AVIXA CTS certification is required 8+ years' experience in technical systems designing Familiarity with audio DSPs, networked audio systems, and transport protocols including 2110-30, AES-67, Ravenna, and Dante Understanding of TCP/IP, ACL's, QoS, VLAN's, and Wireless Access Points. High school diploma or GED required Proficient in AutoCAD and MS Office 365 Certifications or training with at least one DSP platform (Biamp, QSC, Clearone, etc) Certifications or training with at least one control system (Crestron, Extron, AMX, etc) Other relevant certifications may be required or preferred based on the technology focus of the position.
Senior AV Field Engineer - Integration One Diversified LLCSenior AV Field Engineer - IntegrationQuincy, MADecision Making Authority: The SFE typically will be working alone after the installation is substantially complete, but still will coordinate with other team members to ensure a smooth project completion and good communication. A wide range of voluntary benefits including Critical Illness, Hospital Indemnity, Accident Insurance, Pet Insurance, Homeowners and Auto Insurance, Supplemental Life and AD&D coverage, and Legal Services.
Interim Senior Account Manager (Mat Leave Coverage) WGSNInterim Senior Account Manager (Mat Leave Coverage)Boston, MassachusettsYour ability to tailor presentations to different markets and demonstrate how WGSN solves real business challenges within design, marketing, DRIVE STRATEGIC PARTNERSHIPS FOR REVENUE GROWTH: Take a consultative approach to account management by understanding client needs, identifying opportunities for growth, and positioning WGSN as a trusted partner that delivers measurable value. - Dental and Vision plans with MetLife- Health Care with Anthem & Blue Cross Blue Shield - Life Insurance, AD&D, Short and Long-Term Disability - all eligible employees receive coverage at no cost through Metlife- Mental Health – WGSN provides many ways for employees to access mental health care including an Employee Assistance Program and inpatient, outpatient and virtual care if enrolled in an Anthem medical plan.
Senior Account Manager WGSNSenior Account ManagerBoston, MassachusettsYour ability to tailor presentations to different markets and demonstrate how WGSN solves real business challenges within design, marketing, DRIVE STRATEGIC PARTNERSHIPS FOR REVENUE GROWTH: Take a consultative approach to account management by understanding client needs, identifying opportunities for growth, and positioning WGSN as a trusted partner that delivers measurable value. - Dental and Vision plans with MetLife- Health Care with Anthem & Blue Cross Blue Shield - Life Insurance, AD&D, Short and Long-Term Disability - all eligible employees receive coverage at no cost through Metlife- Mental Health – WGSN provides many ways for employees to access mental health care including an Employee Assistance Program and inpatient, outpatient and virtual care if enrolled in an Anthem medical plan.
NewSenior Project Executive Gilbane Building CompanySenior Project ExecutiveBoston, MA$183,000–$322,000 / yearOversees schedule planning and execution of multiple projects; accountable for the management of schedule risks that lead to erosion and provides guidance in strategies and actions to prevent risk . Directs and supervises work of project administration, project superintendents, and engineers to establish operational priorities and maintain satisfactory relationships with owners, subcontractors, unions, etc.
Senior Systems Engineer Smith & Nephew PlcSenior Systems EngineerMA$111,250–$167,500 / yearAs a Senior Systems Engineer within our Sports Medicine R&D organization, you will play a critical role in shaping next generation surgical visualization solutions, working at the intersection of engineering excellence, collaboration and purpose. Inclusion and Belonging- Committed to Welcoming, Celebrating and Thriving on Inclusion and Belonging, Learn more about Employee Inclusion Groups on our website (https://www.smith-nephew.com/).
NewSenior Marketing Specialist - AMS&T Gilbane Building CompanySenior Marketing Specialist - AMS&TBoston, MA$94,900–$139,900 / yearThe Senior Marketing Specialist is a lead for the AMS&T vertical business and works independently to develop sales, marketing, and communications deliverables and leads strategic pursuits and campaigns. Collaborate effectively with cross-functional teams to deliver high-quality external content and client deliverables, ensuring clear communication, mutual support, and a cohesive approach to problem-solving.
Senior Manager, Partnerships Activation Boston Legacy FCSenior Manager, Partnerships ActivationBoston, MassachusettsThis position will report directly to the Director of Partnerships & Activation and work closely with internal departments to bring partnership concepts to life across matchdays, content, community, and brand campaigns. The Senior Manager, Partnerships Activation will be responsible for leading the day-to-day management, execution, and growth of Boston Legacy FC’s corporate partnership portfolio.
NewSenior Design Quality Engineer (Mansfield, MA) Smith & Nephew PlcSenior Design Quality Engineer (Mansfield, MA)Mansfield, MAA Senior Design Quality Engineer will be part of a cross-functional team for new product development to deliver safe and effective products to the market by ensuring all aspects of design controls are robust and comply with company polices and governmental regulations. If so, join our Smith+Nephew team as a Senior Design Quality Engineer and be part of a cross-functional team responsible for New Product Development for sports medicine joint repair products.
Senior Recruiter Gilbane Building CoSenior RecruiterBoston, MA$100,000–$140,000 / yearBuilds targeted pipelines for "experienced hires" that draw a high-quality, diverse applicant pools to meet upcoming needs and maintains regular contact with possible future candidates. Leads the creation of a recruiting and interviewing plan for each open position and conducts regular follow-ups with hiring managers and HR Business Partners to determine the effectiveness of recruiting plans and implementation.
Senior Partner Success Manager Aristocrat Leisure LtdSenior Partner Success ManagerMA$83,365–$154,820 / yearAristocrat Leisure Limited (ASX: ALL) is a leading gaming content creation company powered by technology to deliver industry-leading casino games together with mobile games and online real money games, collectively entertaining millions of players worldwide, every day. Aristocrat Interactive is Aristocrat Leisure Limited's (ASX:ALL) regulated online Real Money Gaming (RMG) business and was formed in 2024 when the Anaxi and NeoGames businesses (Anaxi, NeoGames, Aspire Global, BtoBet, and Pariplay) came together.
Senior Director, New Business Development Jack Morton WorldwideSenior Director, New Business DevelopmentBoston, MAWe have recently become aware that individuals not associated with Jack Morton have fraudulently used our name – and the names of some of our employees – to solicit applications for fake jobs, to conduct fake job interviews and to make fake job offers. Any request to schedule an interview and any bona fide offer of employment will only come from an authorized representative of Jack Morton with an email address %E2%80%9C@jackmorton.com.
NewSr. System Administrator GenezenSr. System AdministratorLexington, MA$140,000–$165,000 / yearYou initiate and execute IT Projects based on the overall IT strategy and priorities and work with IT staff, internal customers, vendors, service partners, auditors and other stakeholders to ensure the right solutions are delivered, leading to better collaboration and tighter feedback loops across teams globally. Strong knowledge of implementing and effectively developing helpdesk and IT operations best practices, including expert knowledge of security, storage, data protection, and disaster recovery protocols including experience with Veeam backup Software.
Sr. Program Manager GenezenSr. Program ManagerLexington, MA$140,000–$175,000 / yearSupport company financial goals and objectives by supporting forecasting processes, assuring timely invoicing of project milestones, and supporting finance department in resolving disputes related to accounts receivable from clients. Program Manager will act as the primary contact between clients, Genezen project team members, and functional groups to track progress and ensure the delivery of quality products and services.
Sr. Scientist, Analytical Development GenezenSr. Scientist, Analytical DevelopmentLexington, MA$120,000–$150,000 / yearNearby Indianapolis is home to professional and college sports teams, the Indy 500, a growing art community and the world's largest children's museum--to name just a few reasons why this area is a great place to live. Methods include, but are not limited to: Potency for AAV vectors, cell based assays, ELISA, ddPCR, qPCR, HPLC using UV-Vis, CAD, and MALS detectors, and flow cytometry-based assays.