Hi! I am John Ray Manzano
Billing & Collections Specialist | Field Service Operations
Hello! I am John Ray Manzano, an Electronics Engineering graduate with a background in CCTV and alarm installation, monitoring, and company service operations. I've since moved toward the operations and collections side of the business — especially operations, service, helpdesk and support.
I run the systems that keep field service operations billable and collectible: Oracle NetSuite for account and billing records, and Fieldroutes for ticketing, dispatch, and work order routing. I'm comfortable owning accounts receivable follow-up and collections work as long as there's a clear standard operating procedure to work from — consistent, compliant execution is what I bring to a team.
My communication skills and adaptability help me thrive in collaborative environments, and I enjoy learning from the people I work with. If you're looking for someone detail-oriented, SOP-driven, and comfortable moving between the technical and administrative sides of service operations, let's connect!
Freelance · Home-services (U.S.-based client)
Service operations, pricing, routing, and billing support for a pest control service company using Fieldroutes.
May 2026
Exposure to infrastructure security operations; service desk, purchasing, and admin/technical support.
Nov 2023 · Banking
Real-time customer calls for a financial account, resolving account, billing, and service issues within SLA.
Jul 2022 · Banking & Credit Analysis
Collection calls, payment negotiations, and international payment concerns for delinquent accounts.
Email: johnraymanzano@gmail.com
Phone: +63 961 197 3518
Location: Taguig, National Capital Region, Philippines