Invoicing Specialist
Boost your chances before you apply.
Harbor IT
US
Summary
The Invoicing Specialist manages accurate and timely customer invoicing for managed service agreements, recurring contracts, and service tickets. They ensure billing data is synchronized between ConnectWise and NetSuite while resolving discrepancies and supporting month-end close activities.
Job Description
Position Overview:
The Invoicing Specialist is responsible for accurate and timely customer invoicing related to managed service agreements, recurring contracts, and service ticket activity. This role works primarily in ConnectWise and NetSuite, ensuring all billable services are properly captured, invoiced, and aligned with customer terms. The ideal candidate is highly detail-oriented, process-driven, and experienced in a high-volume MSP billing environment.
Key Responsibilities:
Agreement & Recurring Billing
· Generate and process monthly recurring invoices for managed service agreements in ConnectWise
· Ensure billing aligns with contract terms, pricing schedules, and service bundles
· Maintain accurate agreement billing setups, including additions, removals, and renewals
Service Ticket Invoicing
· Review service tickets for completeness, accuracy, and billable status
· Invoice time, materials, and project-related services based on approved ticket activity
· Partner with service delivery teams to resolve billing discrepancies or missing documentation
System & Invoice Management
· Sync invoicing activity between ConnectWise and NetSuite to ensure proper financial posting
· Maintain clean billing data and ensure invoices are coded correctly to customers and services
· Support invoice delivery workflows and respond to customer billing inquiries
Sales Order & Project Billing
· Take point on the transition from Sales to Operations by creating Sales Orders and structural Billing Agreements.
· Execute monthly billing for all active projects, managing the complexities of both Fixed Fee milestones and Time & Materials (T&M) projects.
· Generate and process all sales orders & project invoices daily.
Credit Memo Processing
· Credit Requests: Working with CSM & approvers to identify & process credits
· Identify Route Cause: fix any underlying cause, if applicable, in customer agreements
· Credit Memo Reporting: Maintain the credit memo database & produce monthly report
Process Improvement & Controls
· Assist in improving invoicing accuracy, cycle times, and standard billing procedures
· Support month-end close activities related to invoicing and deferred revenue
· Ensure compliance with internal controls and documentation standards
Skills & Competencies
· High-volume invoicing accuracy
· Strong organizational and communication skills
· Comfortable working cross-functionally with operations and finance
· Proficiency in Excel and billing analytics
Qualifications:
Technical Skills
• 2+ years of hands-on invoicing or billing experience, preferably in a service company environment
• Experience working with accounting or billing software Connectwise
• Familiarity with MSP or recurring revenue billing environments preferred
• Basic understanding of accounting principles and revenue recognition
• Account reconciliation experience a plus
• Microsoft Office proficiency — Excel, Word, Teams
• Associate's or Bachelor's degree in Accounting, Finance, or a related field preferred (or equivalent experience)
Additional Skills:
• Strong attention to detail and numerical accuracy
• Ability to follow and consistently adhere to documented SOPs
• Meets deadlines, especially during month-end close
• Strong verbal and written communication skills
• Customer-first mindset when handling billing inquiries
• Ability to manage multiple tasks simultaneously and prioritize effectively
• Ability to work both independently and collaboratively within a team
Benefits:
· Competitive salary
· Comprehensive health benefits
· Unlimited paid time off
· Opportunities for professional growth and development
· Collaborative and supportive team environment
Harbor IT helps organizations secure, operate, and scale through integrated IT, cybersecurity, AI, and cloud services. As a cyber-first technology partner, we serve businesses operating in complex, highly regulated, and mission-critical environments where uptime, security, and resilience directly impact success.
We bring together strategic advisory, engineering expertise, and 24/7 operational support under one roof, giving clients a single partner accountable for technology outcomes. Harbor specializes in supporting healthcare, life sciences, critical infrastructure, manufacturing, agriculture, transportation, oil and gas, and private equity-backed organizations facing unique operational and cybersecurity challenges.
Our cyber-first approach, deep technical specialization, and commitment to long-term client partnerships help organizations reduce risk, strengthen security, and accelerate growth.
Harbor IT is proud to be ranked#32 on the 2026 MSP 501, recognizing the world's top managed service providers.
Founded
1995
Company size
201-500 employees
Industry
Information Technology & Services
Org type
Privately Held
Headquarters
New York, NY
Harbor IT helps organizations secure, operate, and scale through integrated IT, cybersecurity, AI, and cloud services. As a cyber-first technology partner, we serve businesses operating in complex, highly regulated, and mission-critical environments where uptime, security, and resilience directly impact success.
We bring together strategic advisory, engineering expertise, and 24/7 operational support under one roof, giving clients a single partner accountable for technology outcomes. Harbor specializes in supporting healthcare, life sciences, critical infrastructure, manufacturing, agriculture, transportation, oil and gas, and private equity-backed organizations facing unique operational and cybersecurity challenges.
Our cyber-first approach, deep technical specialization, and commitment to long-term client partnerships help organizations reduce risk, strengthen security, and accelerate growth.
Harbor IT is proud to be ranked#32 on the 2026 MSP 501, recognizing the world's top managed service providers.
Founded
1995
Company size
201-500 employees
Industry
Information Technology & Services
Org type
Privately Held
Headquarters
New York, NY