Client Billing Specialist

Spectrum Science; United States; Hybrid; Full time

Job summary

Spectrum Science is seeking a detail-oriented Client Billing Specialist to ensure billing accuracy and timely invoice delivery. The role involves collaborating with client teams and managing financial records in a fast-paced environment. This position offers a hybrid work model, competitive pay, and various benefits to support employees' health and professional growth.

Benefits

Flexible time off

401k with company match

Monthly cell phone reimbursement

Medical concierge service

Sabbatical Program after 7 years

Wellness benefits including medical, dental, vision

Qualifications

• 1–3 years of billing, accounting, or finance operations experience.
• Strong communication skills to explain billing concepts clearly.

Responsibilities

• Ensure invoices are issued in line with client contracts.
• Collaborate with client service teams to validate billing inputs.

Skills

Attention to Detail

Analytical Thinking

Communication

Education

Bachelor's Degree

Tools

Excel

Accountability

Job description

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This range is provided by Spectrum Science. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$31.25/hr - $36.05/hr

Connecting humankind to its best healthlife is not just our mission at Spectrum; it’s what drives us to “Be Thinkful.” A term we use to encourage innovation, spark creative solutions to our client’s greatest challenges and your invitation to passionately share your unique perspective and ideas. As the only full-service, fully-integrated, science-focused firm that unites global marketing, communications, and media under a single P&L, we specialize in going beyond the science quo to deliver best-in-class work for our clients.

We are seeking a detail-oriented and proactive Client Billing Specialist to join our Finance team. This role plays a key part in ensuring billing accuracy, timely invoice delivery, and strong alignment with client teams. The ideal candidate thrives in a fast-paced, collaborative environment, demonstrates strong analytical thinking, and is committed to delivering exceptional service and operational support.

Job Responsibilities

• Ensure invoices are issued in line with client contracts, agreed billing terms, and internal finance processes within the monthly billing cycle.
• Ensure accuracy of client rates, out-of-pocket expenses (OOPs), and contracted values with high attention to detail to ensure billing accuracy.
• Respond promptly and professionally to billing-related inquiries from internal and external stakeholders.
• Collaborate cross-functionally with client service teams and project management to validate billing inputs, resolve discrepancies, and ensure invoice accuracy.
• Provide clear, concise, and customer-friendly responses when communicating with internal teams.
• Identify and flag projects lacking proper documentation or billing setup to prevent delays or inaccuracies.
• Monitor active projects to anticipate billing needs and signal to client teams when budgets are approaching limits ("running hot").
• Compare and reconcile actuals, budgets, and client-issued invoices to ensure consistency across financial records.
• Analyze and investigate billing discrepancies to provide root cause analysis and recommendations for resolution.
• Develop strong working relationships with client service and project management stakeholders to streamline billing coordination.
• Share recurring billing system or process challenges with manager to support ongoing improvements.
• Display sound judgment in managing workload, making decisions, and balancing competing billing priorities.
• Confidently navigate the Accountability (Accounta) platform for billing, reporting, and project data retrieval.
• Gain a strong baseline understanding of monthly and weekly financial reports, including insights from Accountability.
• Leverage financial tools and data to provide billing insights that support internal decision-making and client transparency.
• Participate in the monthly revenue recognition exercise as a part of the monthly close process.

Desired Skills and Qualifications

• 1–3 years of billing, accounting, or finance operations experience, ideally in a service-based or communications agency.
• Demonstrated attention to detail, particularly in reviewing financial data and contractual billing terms.
• Strong communication skills, with the ability to explain billing concepts clearly and diplomatically.
• Ability to work effectively with cross-functional teams and build rapport with both finance and client-facing roles.
• Analytical mindset with a proactive approach to identifying and resolving billing issues.
• Experience using finance platforms such as Accountability (Accounta) or similar project accounting tools.
• Proficiency in Excel and comfort working with data reconciliation tasks.
• Familiarity with project budgets, scopes of work (SOWs), and time/material billing models preferred.

The anticipated hourly rate for this position will be $31.25-$36.05/hour. This position is eligible for overtime pay. This is based on job-related factors such as: years of relevant experience, qualifications and/or certifications. Spectrum reserves the right to modify this pay range at any given time.

We want to ensure our employees are living their best (health and professional) life and offer a variety of benefits and perks which support our flexible work environment.

• All positions are remote friendly. At Spectrum, you choose where you work. We are a hybrid work environment with options to work in one of our three offices (D.C., New York, and Chicago), remotely from anywhere in the United States, or a combination.
• No matter where you work, you’ll benefit from the monthly cell phone reimbursement.
• Flexible time off. Take the time you need in addition to company holidays, voting time, jury duty and bereavement. We also offer a Sabbatical Program after 7 years of service.
• 13 weeks paid Parental Leave, inclusive of adoption and foster care placement.
• Continuous learning and development through Greatest Potential Self (proprietary talent program), tuition reimbursement programs, and in-house 1:1 coaching with access to talent and productivity-based assessments.
• Bring your friends to work at Spectrum and earn a generous referral bonus.
• Medical concierge service to assist with scheduling appointments, finding care, estimating and resolving claim issues, etc.
• Thorough onboarding including accessible conversations with leadership.
• 401k with company match and 1:1 Financial Coaching and Education.
• Wellness benefits including medical, dental, vision, as well as science-backed meditation and mindfulness tools through Headspace.

Spectrum is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law. Spectrum is committed to providing access, equal opportunity, and reasonable accommodations for individuals with disabilities in employment, its services, programs, and activities. To request a reasonable accommodation to participate in the job application or interview process, contact [e-mail]

Seniority level

• Seniority level

  Associate

Employment type

• Employment type

  Full-time

Job function

• Job function

  Finance and Accounting/Auditing

• Industries

  Advertising Services, Public Relations and Communications Services, and Marketing Services

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Inferred from the description for this job

Medical insurance

Vision insurance

401(k)

Paid maternity leave

Paid paternity leave

Tuition assistance

Disability insurance

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