NewSeasonal Tax Associate – Retail IntuitSeasonal Tax Associate – RetailPalatine, IL$22–$28.50 / hourAs a Tax Associate - TurboTax Store, you will focus on bringing in new customers and serving as their trusted advisor, empowering customers to achieve positive financial outcomes while supporting Intuit’s mission of “Powering Prosperity Around the World.”. Passionate about your local community and excited to work with Intuit to engage with and build Intuit’s presence in your local community (e.g., speaking at events, building a local and online social presence, creating content such as tax tips and educational videos).
NewSeasonal Tax Preparer - Retail IntuitSeasonal Tax Preparer - RetailNorthbrook, IL$22–$28.50 / hourAs a Tax Associate - TurboTax Store, you will focus on bringing in new customers and serving as their trusted advisor, empowering customers to achieve positive financial outcomes while supporting Intuit’s mission of “Powering Prosperity Around the World.”. Passionate about your local community and excited to work with Intuit to engage with and build Intuit’s presence in your local community (e.g., speaking at events, building a local and online social presence, creating content such as tax tips and educational videos).
NewSeasonal Tax Expert - In-Store IntuitSeasonal Tax Expert - In-StoreEvanston, IL$32.50–$36 / hourAs a Tax Expert – Retail On-Site, you will focus on bringing in new customers and serving as their trusted advisor, empowering customers to achieve positive financial outcomes while supporting Intuit’s mission of “Powering Prosperity Around the World.”. Passionate about your local community and excited to work with Intuit to engage with and build Intuit’s presence in your local community (e.g., speaking at events, building a local and online social presence, creating content such as tax tips and educational videos).
NewCustomer Service Representative (Seasonal) MetropolisCustomer Service Representative (Seasonal)Chicago, ILLicense Requirement: The individual will only be required to have and maintain a valid state-issued driver's license, with a current address and acceptable driving record, if the individual is expected to be able to drive a company vehicle or drive on company business. Tomorrow, we will power checkout-free experiences anywhere you go to make the everyday experiences of living, working, and playing remarkable - giving us back our most valuable asset, time.
Customer Service Representative (Seasonal) SP Plus CorporationCustomer Service Representative (Seasonal)Chicago, ILLicense Requirement: The individual will only be required to have and maintain a valid state-issued driver's license, with a current address and acceptable driving record, if the individual is expected to be able to drive a company vehicle or drive on company business. Tomorrow, we will power checkout-free experiences anywhere you go to make the everyday experiences of living, working, and playing remarkable - giving us back our most valuable asset, time.
Customer Service Representative (Seasonal) Metropolis TechnologiesCustomer Service Representative (Seasonal)CHICAGO, ILLicense Requirement: The individual will only be required to have and maintain a valid state-issued driver’s license, with a current address and acceptable driving record, if the individual is expected to be able to drive a company vehicle or drive on company business. Tomorrow, we will power checkout-free experiences anywhere you go to make the everyday experiences of living, working, and playing remarkable - giving us back our most valuable asset, time.
Seasonal Customer Experience Specialist Tesla IncSeasonal Customer Experience SpecialistSchaumburg Township, IL$20.44–$25.92 / hourAs the first point of contact in our showrooms and the final touchpoint at vehicle delivery, they serve as true brand ambassadors, bringing our mission to accelerate the world's transition to sustainable energy to life. Inspire and educate guests by answering questions and curating a tailored product experience, including demo drives and Full Self-Driving demonstrations aligned with their interests.
Seasonal Customer Experience Representative Midway Airport Enterprise Holdings IncSeasonal Customer Experience Representative Midway AirportChicago, ILEnterprise Mobility operates the Enterprise Rent-A-Car, National Car Rental, and Alamo car rental brands and has frequently been named one of the top places to work. The Customer Service Representative provides superior, friendly, and efficient transactions and offering company approved services and products to provide a positive experience for all customers.
Seasonal Merchandising Service Associate - Weekends Preferred Lowe's Companies IncSeasonal Merchandising Service Associate - Weekends PreferredNaperville, IL$15.50–$16.75 / hourThis includes: • Understands customers' needs and assists in locating, demonstrating, selecting, carrying, and/or loading merchandise • Engage with customers to understand his/her needs and assists in locating, demonstrating, selecting, carrying, and/or loading merchandise • Listens to and responds knowledgeably and promptly to customer and employee questions by taking them to areas of the store and walking them through projects when necessary • Demonstrates sincere appreciation to customers • Communicates information to customers regarding all stock, special order merchandise, feature benefits, application, and warranty information related to Lowe's programs. Operates store equipment as needed depending on one specific role and department (e.g., Zebra phone, telephone, paging system, copiers, fax machines, computers, CCTV surveillance system, key cutter, panel saw, paint mixer, flooring cutters, compacter baler).
Service Technician/Advisor - Seasonal Part-Time Trek Bicycle CorpService Technician/Advisor - Seasonal Part-TimeAlgonquin, ILYou'll troubleshoot repairs and service all kinds of bikes on the spot and install the awesome accessories customers select for their new bike! Because you'll constantly be speaking with customers to evaluate issues and recommend repairs, we value fantastic hospitality skills above prior shop experience.
FOOD SERVICE WORKER (SEASONAL) Compass Group North AmericaFOOD SERVICE WORKER (SEASONAL)Aurora, ILBecause this position requires you to perform services in an educational facility, there may be periods when the Company does not require you to perform work (such as winter and summer breaks when food service needs decline or cease). While this is intended to be an accurate reflection of the position posted, the Company reserves the right to modify or change the essential functions of the job based on business necessity.
Service Technician/Advisor - Seasonal Part-Time TrekService Technician/Advisor - Seasonal Part-TimeAlgonquin, IllinoisYou’ll troubleshoot repairs and service all kinds of bikes on the spot and install the awesome accessories customers select for their new bike! Because you’ll constantly be speaking with customers to evaluate issues and recommend repairs, we value fantastic hospitality skills above prior shop experience.
Golf Course - Outside Services - Seasonal Worker 2026 City of AuroraGolf Course - Outside Services - Seasonal Worker 2026Aurora, IllinoisPosition is subject to modified/flexible work schedule during high volume work periods, including weekends and evenings. Assist with maintenance of course amenities such as water coolers, tee box collections & cleanup.
Visitor Center Guest Services - Seasonal Worker 2026 City of AuroraVisitor Center Guest Services - Seasonal Worker 2026Aurora, IllinoisThe Seasonal Guest Services worker will function in any of the qualifying categories: the Visitor Center, Administration Building, and the Tram. Position is subject to modified/flexible work schedule during high volume work periods, including weekends and evenings.
Food Service Worker-Seasonal-Appointment Only Goodwill Industries Of Southeastern Wisconsin IncFood Service Worker-Seasonal-Appointment OnlyILThoroughly clean food service equipment, steam tables, desert bars, dining room tables, and serving line areas during the meal and at the completion of meal period. As a Food Service Worker, you will be responsible for serving meals for Navy recruits, sailors, students and staff according to designated meal schedules.
Sales and Service Representative (non-seasonal) Goldfish Swim School - St. CharlesSales and Service Representative (non-seasonal)St. Charles, ILWe offer paid training and flexible shifts that are perfect for students or folks who want to grab extra hours without working late nights. Maintains cleanliness of the front desk area, Snack Shack area, changing areas, restrooms and observation area.
Sales and Service Representative (non-seasonal) Goldfish Swim School - Glen EllynSales and Service Representative (non-seasonal)Glen Ellyn, ILIn addition here are some additional safety precautions and procedures we follow: Every shift has an on-staff cleaner to sanitize high touch areas in our lobby and pool areas. Our state-of-the-art ventilation system allows fresh air to continuously circulate into our building, further minimizing the spread of any airborne virus.
Customer Service Supervisor PetSuitesCustomer Service SupervisorSt. Charles, IL$16–$17PetSuites is the leader of the pack in pet resorts offering exceptional services for both dogs and cats, ranging from boarding and daycare to grooming and training. At NVA Pet Resorts, our mission is simple: Create safe, fun, and loving environments for pets while providing exceptional experiences for our clients and team members.
Spanish Bilingual Remote Customer Service Representative Vimo, Inc.Spanish Bilingual Remote Customer Service RepresentativeJoliet, ILRemoteVimo currently has the largest state-based marketplace footprint, and our consumer-friendly interface and decision support tools empower millions of consumers across the country to make better health plan decisions. In addition to eligibility determination, plan selection, and enrollment technology for state agencies, the company delivers innovative agent marketing and call center tools and services.
Call Center Remote Customer Service Representative Vimo, Inc.Call Center Remote Customer Service RepresentativeILRemoteVimo currently has the largest state-based marketplace footprint, and our consumer-friendly interface and decision support tools empower millions of consumers across the country to make better health plan decisions. In addition to eligibility determination, plan selection, and enrollment technology for state agencies, the company delivers innovative agent marketing and call center tools and services.
NewCustomer Service Supervisor - Full Time Whole Foods Market IP. L.P.Customer Service Supervisor - Full TimeChicago, ILMaintains awareness of customer flows and needs and directs Team Members as necessary to satisfy and delight customers; responds promptly to customer needs and questions. Requirements build as one progresses through the job levels, so any job duties required at a lower level may be required at the higher level in addition to the duties listed for that higher level.
NewCustomer Service Associate - Temporary Walgreens Boots AllianceCustomer Service Associate - TemporaryChicago, ILModels and shares customer service best practices with all team members to deliver a distinctive and delightful customer experience, including interpersonal habits (e.g., greeting, eye contact, courtesy, etc.) and Walgreens service traits (e.g., offering help proactively, identifying needs, servicing until satisfied, etc.). Registers customer purchases on assigned cash register, collects cash and distributes change as requested; processes voids, returns, rain checks, refunds, and exchanges as needed.
Customer Service Associate - Temporary Walgreen CoCustomer Service Associate - TemporaryChicago, IL$17.05–$19 / hourModels and shares customer service best practices with all team members to deliver a distinctive and delightful customer experience, including interpersonal habits (e.g., greeting, eye contact, courtesy, etc.) and Walgreens service traits (e.g., offering help proactively, identifying needs, servicing until satisfied, etc.). Registers customer purchases on assigned cash register, collects cash and distributes change as requested; processes voids, returns, rain checks, refunds, and exchanges as needed.
Pharmacy Customer Service Associate Walgreen CoPharmacy Customer Service AssociateLibertyville, IL$16–$18 / hourPerforms duties as assigned by Pharmacy Manager, Staff Pharmacist and Store Manager including utilizing pharmacy systems to enter patient and drug information, ensuring information is entered correctly, filling prescriptions by retrieving, counting and pouring pharmaceutical drugs, verifying medicine is correct, and checking for possible interactions. Models and shares customer service best practices with all team members to deliver a distinctive and delightful customer experience, including interpersonal habits (e.g., greeting, eye contact, courtesy, etc.) and Walgreens service traits (e.g., offering help proactively, identifying needs, servicing until satisfied, etc.).
Customer Service Associate Walgreen CoCustomer Service AssociateBuffalo Grove, IL$15–$17.50 / hourModels and shares customer service best practices with all team members to deliver a distinctive and delightful customer experience, including interpersonal habits (e.g., greeting, eye contact, courtesy, etc.) and Walgreens service traits (e.g., offering help proactively, identifying needs, servicing until satisfied, etc.). Registers customer purchases on assigned cash register, collects cash and distributes change as requested; processes voids, returns, rain checks, refunds, and exchanges as needed.
Merchandiser (Part-Time / Seasonal) PepsiCo IncMerchandiser (Part-Time / Seasonal)Chicago, ILBecause the material job duties of this role involve regular field work (away from a physical Company location), including visiting customer locations and interfacing with employees, vendors, and customers of the Company, and the general public -- following a conditional offer of employment, the Company has good cause to conduct a review of criminal history in accordance with applicable laws to ensure safety. This includes stocking shelves, rotating shelved product, setting up displays, stocking and rotating products in coolers, organizing and rotating products in storage rooms, and moving products from storage to the sales floor.
Seasonal Retail Associate Store 3204 NEW Guitar Center IncSeasonal Retail Associate Store 3204 NEWSchaumburg, ILWe strive to create lifelong musicians and make a difference in the world by enabling musicians and non-musicians alike to experience the almost indescribable happiness that comes from playing an instrument. Based in Frederick, MD, Music & Arts is now part of the Guitar Center enterprise and comprises 225+ retail stores, 200+ educational representatives, and 250+ affiliate locations.
Seasonal School Events Associate NEW Guitar Center IncSeasonal School Events Associate NEWILWorking with our Education Account Managers, youll pitch in with event set-up, prep, and checklists-and when families arrive, youll be right there to welcome parents and students who are just getting started. We strive to create lifelong musicians and make a difference in the world by enabling musicians and non-musicians alike to experience the almost indescribable happiness that comes from playing an instrument.
Seasonal Sales Associate Under Armour IncSeasonal Sales AssociateAurora, IL$15.75–$17.73 / hourAt Under Armour, we are committed to empowering those who strive for more, and the companys values - Act Sustainably, Celebrate the Wins, Fight on Together, Love Athletes and Stand for Equality - serve as both a roadmap for our teams and the qualities expected of every teammate. Deliver customer omni-channel requests through digital experience Demonstrate collaborative skills and ability to work well within a team Demonstrate ability to work in a fast-paced and deadline-oriented environment.
Seasonal Warehouse Associate (Part-Time) ODP Business Solutions LLCSeasonal Warehouse Associate (Part-Time)ILThe ODP Corporation is a leading provider of products and services through an integrated business-to-business (B2B) distribution platform and omnichannel presence, which includes world-class supply chain and distribution operations, dedicated sales professionals, online presence, and a network of Office Depot and OfficeMax retail stores. Perform one or more distribution-related functions that allow, as the business requires, assignment across various functions such as checking, picking, packing, replenishment, bin/bulk order fill, bin/bulk stocking, shipping, receiving/returns, sorting, or loading (as applicable to operation).
NewSeasonal Fulfillment and Receiving Support Associate, Oak Brook Center Macy's IncSeasonal Fulfillment and Receiving Support Associate, Oak Brook CenterOak Brook, ILWhether you're helping a customer find the perfect gift, streamlining operations in one of our distribution centers, enhancing our online shopping experience, buying in-style and on-trend merchandise to outfit our customers, or designing a balloon for the Thanksgiving Day Parade, we offer unique opportunities to be part of some of the most memorable moments in people's lives. From receiving and organizing merchandise to picking, packing, retrieving orders from our back-of-house storage and delivering them curbside to the customer; monitor alerts to ensure Ready on Time completion of Buy Online Pickup In-Store (BOPS) orders, and you'll help keep the stockroom and sales floor running efficiently.
NewSeasonal Fulfillment and Receiving Support Associate, Promenade Bolingbrook Macy's IncSeasonal Fulfillment and Receiving Support Associate, Promenade BolingbrookBolingbrook, ILWhether you're helping a customer find the perfect gift, streamlining operations in one of our distribution centers, enhancing our online shopping experience, buying in-style and on-trend merchandise to outfit our customers, or designing a balloon for the Thanksgiving Day Parade, we offer unique opportunities to be part of some of the most memorable moments in people's lives. From receiving and organizing merchandise to picking, packing, retrieving orders from our back-of-house storage and delivering them curbside to the customer; monitor alerts to ensure Ready on Time completion of Buy Online Pickup In-Store (BOPS) orders, and you'll help keep the stockroom and sales floor running efficiently.
NewSeasonal Fulfillment and Receiving Support Associate, Woodfield Macy's IncSeasonal Fulfillment and Receiving Support Associate, WoodfieldSchaumburg, ILWhether you're helping a customer find the perfect gift, streamlining operations in one of our distribution centers, enhancing our online shopping experience, buying in-style and on-trend merchandise to outfit our customers, or designing a balloon for the Thanksgiving Day Parade, we offer unique opportunities to be part of some of the most memorable moments in people's lives. From receiving and organizing merchandise to picking, packing, retrieving orders from our back-of-house storage and delivering them curbside to the customer; monitor alerts to ensure Ready on Time completion of Buy Online Pickup In-Store (BOPS) orders, and you'll help keep the stockroom and sales floor running efficiently.
NewSeasonal Fulfillment and Receiving Support Associate, Gurnee Mills Macy's IncSeasonal Fulfillment and Receiving Support Associate, Gurnee MillsGurnee, ILWhether you're helping a customer find the perfect gift, streamlining operations in one of our distribution centers, enhancing our online shopping experience, buying in-style and on-trend merchandise to outfit our customers, or designing a balloon for the Thanksgiving Day Parade, we offer unique opportunities to be part of some of the most memorable moments in people's lives. From receiving and organizing merchandise to picking, packing, retrieving orders from our back-of-house storage and delivering them curbside to the customer; monitor alerts to ensure Ready on Time completion of Buy Online Pickup In-Store (BOPS) orders, and you'll help keep the stockroom and sales floor running efficiently.
NewSeasonal Fulfillment and Receiving Support Associate, State Street Macy's IncSeasonal Fulfillment and Receiving Support Associate, State StreetChicago, ILWhether you're helping a customer find the perfect gift, streamlining operations in one of our distribution centers, enhancing our online shopping experience, buying in-style and on-trend merchandise to outfit our customers, or designing a balloon for the Thanksgiving Day Parade, we offer unique opportunities to be part of some of the most memorable moments in people's lives. From receiving and organizing merchandise to picking, packing, retrieving orders from our back-of-house storage and delivering them curbside to the customer; monitor alerts to ensure Ready on Time completion of Buy Online Pickup In-Store (BOPS) orders, and you'll help keep the stockroom and sales floor running efficiently.
NewSeasonal Fulfillment and Receiving Support Associate, Fox Valley Macy's IncSeasonal Fulfillment and Receiving Support Associate, Fox ValleyAurora, ILWhether you're helping a customer find the perfect gift, streamlining operations in one of our distribution centers, enhancing our online shopping experience, buying in-style and on-trend merchandise to outfit our customers, or designing a balloon for the Thanksgiving Day Parade, we offer unique opportunities to be part of some of the most memorable moments in people's lives. From receiving and organizing merchandise to picking, packing, retrieving orders from our back-of-house storage and delivering them curbside to the customer; monitor alerts to ensure Ready on Time completion of Buy Online Pickup In-Store (BOPS) orders, and you'll help keep the stockroom and sales floor running efficiently.
NewSeasonal Fulfillment and Receiving Support Associate, Old Orchard Macy's IncSeasonal Fulfillment and Receiving Support Associate, Old OrchardSkokie, ILWhether you're helping a customer find the perfect gift, streamlining operations in one of our distribution centers, enhancing our online shopping experience, buying in-style and on-trend merchandise to outfit our customers, or designing a balloon for the Thanksgiving Day Parade, we offer unique opportunities to be part of some of the most memorable moments in people's lives. From receiving and organizing merchandise to picking, packing, retrieving orders from our back-of-house storage and delivering them curbside to the customer; monitor alerts to ensure Ready on Time completion of Buy Online Pickup In-Store (BOPS) orders, and you'll help keep the stockroom and sales floor running efficiently.
Overnight Grocery Team Member (Stocker, Inventory, Receiving) - Part Time Seasonal Whole Foods Market IncOvernight Grocery Team Member (Stocker, Inventory, Receiving) - Part Time SeasonalNaperville, IL$17–$25.40 / hourProvides excellent customer service, addresses needs of customers in a timely and effective manner and models suggestive selling techniques; answers phones and pages promptly and courteously. New entry level Team Members who successfully complete their first 90-days of employment and who remain actively employed in an eligible role, may be eligible for a base rate increase after their 90-day anniversary.
Seasonal Retail Associate Store 3204 Music & ArtsSeasonal Retail Associate Store 3204Schaumburg, ILWe strive to create lifelong musicians and make a difference in the world by enabling musicians and non-musicians alike to experience the almost indescribable happiness that comes from playing an instrument. Based in Frederick, MD, Music & Arts is now part of the Guitar Center enterprise and comprises 225+ retail stores, 200+ educational representatives, and 250+ affiliate locations.
Seasonal Program Specialist - South/Southwest After School MattersSeasonal Program Specialist - South/SouthwestChicago, ILAbout Us: After School Matters is a Chicago-based nonprofit organization that annually offers after-school and summer programs to nearly 19,000 Chicago high school teens to explore and develop their talents while gaining critical skills that will set them up for success in college and beyond. Programs take place at community locations throughout the city, including four ASM buildings: downtown at Gallery 37 Center for the Arts and Orleans, the Michael and Karyn Lutz Center in Belmont Cragin, and the Pullman community at Gately Park.
Part-Time Seasonal Sales Associate C & J Clark International LtdPart-Time Seasonal Sales AssociateILFrom the original Clarks Desert Boot, first designed by Nathan Clark and launched in 1950, to the iconic Wallabee, each design has an instantly recognizable signature that makes it unmistakably Clarks. Our ranges reflect our good faith effort to pay fairly, commensurate with an ideal candidate's experience and qualifications, or as required by any state and local wage laws.
NewSeasonal Sales Associate Under ArmourSeasonal Sales AssociateAurora, IL$15.75–$17.73 / hourAt Under Armour, we are committed to empowering those who strive for more, and the company's values - Act Sustainably, Celebrate the Wins, Fight on Together, Love Athletes and Stand for Equality - serve as both a roadmap for our teams and the qualities expected of every teammate. Deliver customer omni-channel requests through digital experience Demonstrate collaborative skills and ability to work well within a team Demonstrate ability to work in a fast-paced and deadline-oriented environment.
NewSales Associate (Part-time Seasonal) @ Skydeck Chicago Event NetworkSales Associate (Part-time Seasonal) @ Skydeck ChicagoChicago, ILAs the leading operator of retail experiences at some of the most iconic and inspiring destinations across the United States, we infuse passion, creativity, and purpose into everything we do. Our team is dedicated to providing engaging and memorable retail environments that enhance the guest experience, while reflecting the unique mission and values of each location we serve.
Cook I - Seasonal Q CenterCook I - SeasonalSt. Charles, IllinoisAs the largest full-service conference facilities in the Midwest, our vast 150,000+ square-feet of IACC-certified meeting and event spaces regularly host a variety of occasions, from large-scale Fortune 500 company meetings to small business training and special events, like fundraisers and galas. Q Center isn’t just for business meetings and conferences – our multi-talented team and event space makes us one of the Midwest’s premier special event venues!
Lead Sales Associate (Seasonal) Leslie's Poolmart IncLead Sales Associate (Seasonal)BLOOMINGDALE, IL$16–$18 / hourWe operate an integrated ecosystem of 900+ retail locations, backyard service and repair, a robust digital platform, and manufacturing and distribution divisions across 35+ states-enabling consumers to engage with Leslies whenever, wherever, and however they prefer to shop. Job Overview: The Lead Sales Associate will provide superior customer service to our customers and support the General Manager in all facets of retail operations to ensure the store is operating at optimal performance.
Seasonal Associate-Fashion Outlets of Chicago Victoria's Secret & CoSeasonal Associate-Fashion Outlets of ChicagoRosemont, ILThe Seasonal Sales Associate drives sales and provides exceptional customer service, while engaging our customers and exhibiting an elevated level of product knowledge and expertise. When assigned to the cash wrap: Delivers a friendly and efficient cash wrap experience, processing customer transactions accurately and efficiently.
Seasonal Associate - Oakbrook (8a-12a Victoria's Secret & CoSeasonal Associate - Oakbrook (8a-12aOak Brook, ILThe Seasonal Sales Associate drives sales and provides exceptional customer service, while engaging our customers and exhibiting an elevated level of product knowledge and expertise. When assigned to the cash wrap: Delivers a friendly and efficient cash wrap experience, processing customer transactions accurately and efficiently.
Seasonal Stock Associate - Oakbrook (4am-3pm / (9pm-6am Victoria's Secret & CoSeasonal Stock Associate - Oakbrook (4am-3pm / (9pm-6amOak Brook, ILThe Seasonal Sales Associate drives sales and provides exceptional customer service, while engaging our customers and exhibiting an elevated level of product knowledge and expertise. When assigned to the cash wrap: Delivers a friendly and efficient cash wrap experience, processing customer transactions accurately and efficiently.
Seasonal Associate-Promenade at Bolingbrook Victoria's Secret & CoSeasonal Associate-Promenade at BolingbrookBolingbrook, ILThe Seasonal Sales Associate drives sales and provides exceptional customer service, while engaging our customers and exhibiting an elevated level of product knowledge and expertise. When assigned to the cash wrap: Delivers a friendly and efficient cash wrap experience, processing customer transactions accurately and efficiently.
NewSeasonal Associate-Chicago Premium Outlets Victoria's Secret & CoSeasonal Associate-Chicago Premium OutletsAurora, ILThe Seasonal Sales Associate drives sales and provides exceptional customer service, while engaging our customers and exhibiting an elevated level of product knowledge and expertise. When assigned to the cash wrap: Delivers a friendly and efficient cash wrap experience, processing customer transactions accurately and efficiently.