Marcos Montiel Cruz
Accountant turned Product Manager · AI & Automation · Cozumel / Playa del Carmen, Quintana Roo, Mexico
Summary
Product Manager who ships from inside the work. Built internal tools and AI-enabled workflows for accounting and finance teams, partnering with engineering, ops, and clients across the full lifecycle: discovery, requirements, testing, rollout, iteration.
Principles
- Numbers are the user story.
- Ship the smallest thing that teaches you something.
- If a process can't be measured, it can't be improved.
- Documentation is part of the deliverable.
Experience
- Apr 2024 → presentRemote
Product Manager
@ Proper Technologies (Proper.ai)Ship internal accounting tools, AP automation, and AI-enabled workflows for finance teams, partnering with engineering across discovery, build, and rollout.
productinternal-toolsaiautomationScope: AP workflows, internal admin tooling, process automation, and AI-enabled ops across Proper’s finance org, discovery through iteration.
- Paired with engineering to translate accounting and operational pain into shipped product: AP automation, an internal admin console, and an agentic accounting pilot.
- Designed the AP intake and workflow that cut invoice handling time by ~50% across ~70k invoices/month.
- Shipped an OCR + LLM extraction and normalization pipeline tuned per client portfolio, saving ~2 minutes per invoice on top of the workflow gains.
- Shipped admin tooling that consolidated ~30 hours/month of cross-cloud work between Dropbox, SharePoint, and Google Drive into one interface.
- Embedded Claude Code, Gemini, and Codex into analysis and drafting pipelines to accelerate discovery and solution design.
- Unblocked engineering with sharp PRDs, review checkpoints, and TypeScript-level context so feedback loops stayed tight.
- Apr 2023 → Apr 2024Remote
Senior Accountant
@ Proper TechnologiesLed a 12-person team; cut the monthly financial packet from 5 hours to 30 minutes with Google Workspace and Apps Script automation.
accountingleadershipautomationreal-estateRebuilt the team’s close around shared Google Workspace tooling; mentored 12 accountants through the transition.
- Shipped Apps Script automation that cut monthly financial-packet prep from 5 hours to 30 minutes across ~150 packets.
- Standardized reporting workflows for real-estate and corporate clients on a single Google Workspace stack.
- Paired with the team to embed review checkpoints into the normal close, so audit prep became a by-product.
- Streamlined high-volume AP and AR through process redesign: fewer manual touches per cycle, faster review.
- Owned client and partner relationships across onboarding, recurring deliverables, and ad-hoc operational support.
- Dec 2021 → Apr 2023Remote
General Accountant
@ Proper TechnologiesRan AP/AR, accruals, and bookkeeping for real-estate clients under US GAAP; backed teams processing 2–3k invoices/month.
accountingreal-estateus-gaapOwned end-to-end AP/AR and the quality bar for the teams doing the work.
- Coached AP/AR teams through 2–3k invoices/month per portfolio, keeping processing accuracy and turnaround inside SLA.
- Ran monthly accruals and bookkeeping under US GAAP for a real-estate client book.
- Delivered client-facing financial reports with consistent structure, so review cycles stayed short.
- Translated recurring client feedback into process tweaks the team could ship without waiting on a formal change request.
- Mar 2021 → Dec 2021Remote
Accounts Payable Accountant
@ Proper TechnologiesRan AP for ~70 real-estate entities; processed ~1k invoices/month including accruals, billbacks, and intercompany entries.
accountingaptreasuryOwned AP across a multi-entity real-estate book; the kind of volume where one missing accrual ripples into close.
- Processed ~1k invoices/month across a 50–70 entity real-estate portfolio, including accruals, billbacks, and intercompany entries.
- Reconciled vendor ledgers and kept W-9 and 1099 records ready for filing.
- Ran the recurring payment cycle and watched daily cash balances across the portfolio.
- Posted ACH and check receipts into the GL the same day so reconciliation stayed clean.
- Dec 2018 → Mar 2021Cozumel, Mexico
Treasury and Billing Clerk
@ Costamed Medical GroupOwned hospital invoicing, bank deposits, and insurance payment clearing; kept cash records and bank reconciled.
accountingbillingtreasuryhealthcareOwned the integrity of cash on hand versus what the bank said we had, and cleared insurance payments end-to-end.
- Issued hospital invoices and billing documents across the Costamed operations.
- Reconciled daily bank deposits against the cash records so the desk never carried stale balances.
- Cleared insurance payments from billing through to posting, partnering with the billing team on exception handling.
- Jul 2014 → Nov 2019Cozumel, Mexico
Income Auditor
@ Barceló Hotel GroupReconciled bank statements and audited cashier operations across the property; cleared external audits without findings.
accountingaudithospitalityOwned the integrity of every cash handoff on the property, and the relationship with the external auditors reviewing it.
- Reconciled daily bank statements against the property’s cash records.
- Audited cashier handoffs and cash handling processes; resolved discrepancies before close.
- Partnered with the external audit team to fulfill every information request with clean evidence.
Skills
Languages
- Spanish — Native
- English — Professional working proficiency