Overview The Account Specialist is responsible for managing medium‑ to high‑complexity customer accounts, ensuring accurate billing, timely issue resolution, and seamless communication between internal teams and clients. This role requires exceptional attention to detail, strong analytical skills, and the ability to thrive in a high‑volume, fast‑paced environment. Key ResponsibilitiesAccount Management & Billing Support + Manage assigned customer accounts ranging from moderate to complex billing requirements. + Process approximately 250 invoices per day, ensuring accuracy and timely completion. + Investigate and resolve invoice discrepancies by partnering with billing, operations, and logistics teams. + Develop corrective action plans for recurring or complex billing issues. Reporting & Data Management + Run and format daily queries using company‑specific software/tools to monitor productivity and generate reports. + Create, update, and maintain account balance spreadsheets using advanced Excel functions, including pivot tables and V‑lookups. + Document all work performed on customer accounts daily and update information in the financial system for management review. Communication & Cross‑Functional Collaboration + Serve as the primary liaison between customers and internal departments to resolve billing and service conflicts. + Communicate professionally via email to address customer questions, collect missing information, and ensure accurate billing. + Collaborate with collections and logistics teams to support account reconciliation and workflow alignment. Skills & Competencies + High‑volume invoicing + Advanced Excel (pivot tables, V‑lookups) + Email communication + Administration & data entry + Customer service & account coordination + ERP/financial systems (Oracle preferred) + Logistics industry familiarity Required Qualifications + Strong Excel skills, including pivot tables and V‑lookups + Experience with high‑volume invoice processing + Email communication expertise + Prior experience with collections or account reconciliation + Logistics or transportation industry experience (preferred but not required) Experience Level Expert Level Job Type & Location This is a Contract position based out of Tinley Park, IL. Pay and Benefits The pay range for this position is $21.00 - $21.00/hr. Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: • Medical, dental & vision • Critical Illness, Accident, and Hospital • 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available • Life Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term disability • Health Spending Account (HSA) • Transportation benefits • Employee Assistance Program • Time Off/Leave (PTO, Vacation or Sick Leave) Workplace Type This is a hybrid position in Tinley Park,IL. Application Deadline This position is anticipated to close on Feb 16, 2026. h4>About TEKsystems: We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company. The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law. About TEKsystems and TEKsystems Global Services We’re a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We’re a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We’re strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We’re building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com. The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.