Senior Accounting & Billing Specialist

5x5 Telecom; California; On-site; USD 70,000 - 110,000; Full time

Job summary

5x5 Telecom is building out its accounting and billing function and seeks a hands-on accounting professional who will own AP, AR, collections, GL, and monthly close. You’ll interact regularly with customers and vendors by phone to chase invoices, resolve discrepancies, and ensure accurate financials.

You’ll manage the telecom billing platform alignment to the general ledger, produce statements, and support outside CPA, tax preparers, and lenders.

Qualifications

• 5+ years of progressively responsible accounting experience.
• Hands-on bookkeeping including AP, AR, and monthly close.
• Strong communication with customers and vendors to resolve issues.

Responsibilities

• Own day-to-day accounting and billing functions including AP, AR, and collections.
• Prepare monthly financial statements and reconcile billing platform to GL.
• Maintain GAAP accrual-basis books and support external CPA and auditors.
• Interact with customers and vendors by phone and email on invoices and disputes.
• Manage vendor setup, payments, and month-end accruals; support 1099s.

Skills

Communication skills

Customer service

Attention to detail

GAAP knowledge

Tools

Billing platform

ERP / General ledger

Excel

Job description

Job Description

Job Description

About Us

5x5 Telecom delivers enterprise internet, VoIP, and managed services to businesses that can't afford downtime. We're the only carrier with redundancy at all on-net projects, and our installations typically take 1–2 days rather than weeks. We're now bringing our accounting and bookkeeping functions in-house, and we're hiring the person who will own them.

The Role

You will own 5x5's day-to-day accounting and billing: AP, AR, collections, general ledger, reconciliations, customer account setup in our telecom billing platform, and the monthly close. You'll maintain GAAP-compliant, accrual-basis books, produce monthly financial statements and supporting schedules, and reconcile the billing platform to the GL.

You'll also spend a meaningful part of every day on the phone. Customers and vendors will call you about invoices, balances, credits, disputes, and payment status — and you'll call them to chase missing documentation, resolve discrepancies, and collect past-due balances. We need someone who is good at this and genuinely likes it.

Two things this job is not. It isn't a back-office role where you work exclusively in spreadsheets; external communication is central, not incidental. And it isn't a management role where you delegate the detail work. This is a hands-on individual contributor position for someone equally comfortable booking an accrual, explaining a surcharge to a customer's office manager, and calling a vendor's AR department to sort out a duplicate charge.

What You'll Own

Monthly close and general accounting

• Run the complete monthly close independently — journal entries, adjustments, accruals, and cutoff accuracy across prepayments, deferred revenue, fixed assets, depreciation, payroll, and commissions

• Reconcile all material balance-sheet accounts monthly (bank, credit card, merchant processing, loans, payroll), and resolve differences rather than carrying them

• Prepare monthly financial statements and supporting schedules for management

• Maintain the chart of accounts, documentation, and a clean audit trail

• Flag unusual transactions, control gaps, and financial risks early

• Support our outside CPA, tax preparers, auditors, and lenders

Billing, AR, and collections

• Set up new customer accounts in the telecom billing platform — entities, addresses, billing contacts, terms, tax status, service dates, recurring and one-time charges, discounts, and surcharges — accurately and before the first invoice goes out

• Process service changes, upgrades, downgrades, moves, renewals, and cancellations

• Issue invoices, apply payments and credits, and reconcile the billing platform to the GL

• Review billing data for missed charges, wrong rates, unauthorized discounts, and other revenue leakage

• Monitor AR aging and pursue past-due balances professionally and persistently

• Research disputes, unapplied and partial payments, and account discrepancies through to resolution

• Report to management on aging, collections, and material account issues

AP and vendor management

• Receive, code, verify, and enter vendor invoices; confirm approvals and correct period

• Schedule and process payments; maintain vendor records, W-9s, and documentation

• Reconcile vendor statements and chase missing invoices, credits, and incorrect balances

• Monitor recurring charges for unexpected increases, duplicate services, and billing errors

• Prepare month-end AP accruals and assist with annual 1099s

Customer finance support

• Be the person customers reach for invoice, balance, payment, credit, and autopay questions — by phone and email

• Investigate billing concerns end to end instead of handing them off

• Coordinate with sales, implementation, operations, and support to confirm billing matches what was sold and delivered

• Stay patient and solution-oriented in difficult conversations

• Identify recurring sources of customer confusion and fix the underlying invoice or process

Process and controls

• Write and maintain SOPs for recurring accounting and billing processes, plus a monthly close checklist

• Maintain controls over invoice approval, payments, refunds, credits, and account changes

• Protect confidential company, customer, employee, and banking information

• Build processes that scale as we grow

Required Qualifications

• 5+ years of progressively responsible accounting, senior accounting, or full-charg