Billing jobs in East London

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We are a tech-first staffing platform that gives workers the freedom to choose their own shifts and businesses the power to hire with a click. We are removing the friction from the traditional agency model and replacing it with speed, transparency, and choice.

We operate with the agility and energy of a high-growth scale-up, but we are backed by the stability and resources of Indeed - the world's #1 job site. This gives us a unique advantage: the freedom to innovate at speed, with the muscle to dominate the market.

This is an in-office role, five days per week with the option to work from home on Thursdays.

We are based literally a 30-second stroll from Farringdon station.

The Role

The Billing Specialist I owns defined billing workflows at Indeed Flex and is accountable for making sure client invoicing complies with rate, tax and invoicing rules. Working at the intersection of Money, Revenue, and Operations and Support, the role has two parts. The Specialist stays hands-on with day-to-day billing, such as consolidating data sources, raising accurate invoices and resolving client queries. They also investigate billing discrepancies and process friction to find their root cause, and document those findings with enough evidence for the business to act on them. The position supports strong financial controls, contributes to month-end reporting, and helps billing scale in a fast-paced, high-volume environment.

What you'll be doing

• Own defined billing workflows, such as a client segment, invoice run, credit card billing or weekly reconciliation. Be accountable for whether outcomes comply with rate, tax and invoicing rules.
• Raise accurate, complete and timely client invoices by consolidating time and attendance (T&A), rate and worker pay data, and resolve client billing queries efficiently.
• Raise invoices for credit card customers and work with credit card providers to make sure data is captured correctly.
• Run the weekly reconciliation of portal client data and invoicing data against worker pay and timesheets.
• Make sure clients are set up and maintained correctly in billing systems, including rates, tax treatment and billing details.
• Investigate billing discrepancies independently until you find the root cause, resolve them within your level of authority, and document pain points and control gaps with enough evidence for others to act.
• Balance live billing work with analysis, and stay close enough to day-to-day billing to confirm whether process and tooling changes actually work.
• Improve how discrepancies are handled: clearer root causes, correct adjustments and credit notes, and fewer repeat exceptions.
• Protect billing SLAs and invoice-run timelines during volume spikes and month-end without dropping either operational or analytical work.
• Map workflow and system friction across ACP/OMS, NetSuite, Salesforce and related tools clearly enough for others to act on it, and contribute requirements and failure-mode evidence that shape billing tooling and automation improvements.
• Apply payroll, tax, invoicing and accounts receivable (AR) rules correctly while identifying where process design breaks down.
• Build basic billing reports, including introductory SQL, and independently check data accuracy from T&A through to billing and payroll.
• Test billing automation and AI tools in production-like conditions, and tell genuine defects apart from user error.
• Maintain QA gates for owned billing workflows, including client setup and rate-card accuracy, pre-issue invoice checks, and adjustment and credit-note checks, so known defects don't reach clients or the ledger.
• Onboard and mentor associates while they ramp up, and guide short-term overflow help during invoice runs and month-end so the team's output stays reliable.
• Share discrepancy findings with Credit Control, Payroll, Finance, Revenue/Account Management and Operations early enough to prevent handoff failures.
• Support internal and external auditors with process walkthroughs and queries.
• Support the finance team with month-end reporting and reconciliation.

What you'll need

What you'll get