• Manage past-due accounts through the QBO Collections Center, including weekly customer outreach, statement distribution, and response to customer replies • Record all incoming payments in QBO (paper checks, Authorize.net e-checks, and credit card payments) and make corresponding deposits • Run recurring billing reports, distribute to managers on schedule, and handle new customer billing, changes, and cancellations in QBO as needed • Set up and maintain Automated Recurring Billing (ARBs) and recurring transactions, including price updates • Enter vendor and contractor bills into the QBO Vendor Center; collect and file W-9s; enter referral partner commissions for CFO processing • File employee credit card receipts and enter charges into QBO • Prepare monthly, quarterly, and other reports as needed, such as, but not limited to, the Tourism billing report, Sales Tax Quarterly Gross Up Report, and ad spend reconciliation • Enter end-of-month commission data and perform commission sheet audits • Enter scorecard data and complete NYS Contract System audits as needed • Audit domain names and Google accounts billed through Mannix; confirm they are memorized and invoiced • Participate in periodic check-ins with the finance team as needed • Document billing activities and client updates in the company CRM (Admin)

• Answer incoming customer and client phone calls professionally and efficiently. • Create, process, and send invoices accurately and timeously. • Perform general administrative and secretarial duties. • Manage billing and invoicing functions with a high degree of accuracy. • Process information received from field technicians. • Capture job details accurately within the company system. • Issue invoices and maintain accurate records. • Support day-to-day office operations and administrative processes. • Communicate effectively with customers, clients, and internal stakeholders. • Identify and address discrepancies or errors proactively. • Maintain confidentiality and professionalism in all interactions.

Role Description We are seeking a highly organised and detail-oriented Administrative & Billing Coordinator to support one of our U.S.-based clients. This role is ideal for someone who thrives in an administrative environment, enjoys working with customers, and takes pride in producing accurate work. The successful candidate will play a key role in supporting daily office operations, handling incoming calls, processing information from field technicians, and managing billing and invoicing functions. The client places a strong emphasis on character, accountability, and work ethic, and is looking for someone who demonstrates integrity, initiative, and exceptional attention to detail. - Answer incoming customer and client phone calls professionally and efficiently. - Create, process, and send invoices accurately and timeously. - Perform general administrative and secretarial duties. - Manage billing and invoicing functions with a high degree of accuracy. - Process information received from field technicians. - Capture job details accurately within the company system. - Issue invoices and maintain accurate records. - Support day-to-day office operations and administrative processes. - Communicate effectively with customers, clients, and internal stakeholders. - Identify and address discrepancies or errors proactively. - Maintain confidentiality and professionalism in all interactions. Qualifications - Previous experience in an administrative, secretarial, office support, or customer service role. - Excellent verbal and written English communication skills with a clear and professional accent. - Strong attention to detail and commitment to accuracy. - Experience with billing, invoicing, or administrative financial tasks. - Strong organisational and multitasking abilities. - Ability to work independently and take initiative. - Excellent problem-solving and critical-thinking skills. - High level of accountability, integrity, and honesty. - Ability to learn new systems and processes quickly. - Reliable, proactive, and self-motivated. - Strong work ethic and commitment to producing high-quality work. Requirements - Working Hours: Monday – Friday | 9:00 AM – 6:00 PM EST (3:00 PM – 00:00 AM South African time - subject to daylight savings). - Public Holidays: This role requires working on both South African and U.S. public holidays (compensation for SA public holidays in accordance with the BCEA). - Internet Requirements: A fixed fibre line with a minimum speed of 25 Mbps (upload & download) and wired Ethernet capability is mandatory. Applicants without a fixed fibre line cannot be considered. - Power Backup: Reliable backup required to manage load shedding or outages. Applicants without a power backup cannot be considered. - Work Environment: Fully remote. Company Description ISTA Personnel Solutions is a dynamic and fast-growing BPO company. We are not a recruitment agency - we operate as a dedicated extension of our U.S.-based clients’ teams, delivering high-quality service with precision, efficiency, and a personal touch.

Title: Billing Representative III Location: Somerville-MA time type Full time job requisition id RQ4064169 Site: Mass General Brigham Incorporated Mass General Brigham relies on a wide range of professionals, including doctors, nurses, business people, tech experts, researchers, and systems analysts to advance our mission. As a not-for-profit, we support patient care, research, teaching, and community service, striving to provide exceptional care. We believe that high-performing teams drive groundbreaking medical discoveries and invite all applicants to join us and experience what it means to be part of Mass General Brigham. Job Summary Responsible for maintenance of accurate billing records of complex customer and/or patient accounts, process payments and adjustments, and communicate with customers to answer questions or provide information. Participates in peer review to ensure accuracy and timeliness standards are maintained. Essential Functions -Interact with internal and external customers to gather support data to ensure billing accuracy and work through billing discrepancies. -Addresses issues of a more complex nature and support junior staff by answering day to day questions. -Peer reviews records for management to ensure accuracy of information. -Process payments and maintain up-to-date billing records. -Reprocessing insurance denials and submitting all necessary documentation for payment. -Collaborate with other departments to resolve billing and payment issues. -May prepare monthly and quarterly billing reports for management review. Qualifications Education High School Diploma or Equivalent required Experience Billing Experience 2-3 years required Knowledge, Skills and Abilities - Strong attention to detail. - Excellent interpersonal, written and verbal communication skills. - Proficient in Microsoft Office Excel and other relevant billing software. - Ability to prioritize and manage multiple tasks simultaneously. - Ability to work independently and as part of a team. - Ability to work in a fast-paced environment. Additional Job Details (if applicable) • M-F 8:30-5 PM EST schedule •Hybrid onsite position in Somerville, MA - monthly attendance Remote Type Hybrid Work Location 399 Revolution Drive Scheduled Weekly Hours 40 Employee Type Regular Work Shift Day (United States of America) Pay Range $19.81 - $28.30/Hourly Grade 3 At Mass General Brigham, we believe in recognizing and rewarding the unique value each team member brings to our organization. Our approach to determining base pay is comprehensive, and any offer extended will take into account your skills, relevant experience if applicable, education, certifications and other essential factors. The base pay information provided offers an estimate based on the minimum job qualifications; however, it does not encompass all elements contributing to your total compensation package. In addition to competitive base pay, we offer comprehensive benefits, career advancement opportunities, differentials, premiums and bonuses as applicable and recognition programs designed to celebrate your contributions and support your professional growth. We invite you to apply, and our Talent Acquisition team will provide an overview of your potential compensation and benefits package. EEO Statement: 0100 Mass General Brigham Incorporated is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religious creed, national origin, sex, age, gender identity, disability, sexual orientation, military service, genetic information, and/or other status protected under law. We will ensure that all individuals with a disability are provided a reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Mass General Brigham Competency Framework At Mass General Brigham, our competency framework defines what effective leadership “looks like” by specifying which behaviors are most critical for successful performance at each job level. The framework is comprised of ten competencies (half People-Focused, half Performance-Focused) and are defined by observable and measurable skills and behaviors that contribute to workplace effectiveness and career success. These competencies are used to evaluate performance, make hiring decisions, identify development needs, mobilize employees across our system, and establish a strong talent pipeline.