Sonja Costello

City Of Phoenix, Aviation, Public Safety and Security

Phoenix, Arizona, United States

About

• Detail and result oriented professional that works effectively with management of all levels, associates/employees, architects, engineers, developers, contractors, inspectors, city officials, constituents, agents and customers. • Excellent team builder, communicator with interpersonal and organization skills, the ability to handle work under pressure in emergency and stressful situations and several tasks concurrently. • Possess the ability to quickly and accurately obtain pertinent information and carefully follow processes in sequential order. • Executes and applies critical thinking skills to develop creative solutions to complicated issues. • Works under timelines and exceeds standards. Knowledge of computer platforms, applications; works as part of a team and independently to complete job tasks. Specialties: Accounting, Job Costing, Purchasing, Vendor Procurement, Contract Negotiations, Project Management.

Experience

  • Senior Buyer at City of Phoenix
    May 2022 - Present · 4 yrs 3 mos

    Procurement of goods and services related to all functionality of Sky Harbor International Airport, Goodyear and Deer Valley Airports.

  • Buyer/Contract Services & Materials at Self Employed
    Oct 2016 - Present · 9 yrs 10 mos

    • Manage and write service contracts for Final Coat Painting. • Manage and create single source and master contracts for renewal, ensuring labor rates, exceptions, safety requirements and any additional requests as required by customer. • Source suppliers, create request for proposals, negotiate pricing and terms, finalize contracts to reduce costs of buying goods/materials and services and to reduce risk using category management. • Process change orders as submitted by Project Managers to respective job and issue subcontract supplements. • Verified time entry to scheduled project, ensure AP invoices coded to correct jobs to provide cost reports. • Assist clients and Project Managers with monthly invoicing as needed to ensure compliance with contracts. • Attend on site meetings with subcontractors, Project Managers and teams to review job status and costs. • Completed all contract negotiations for vendor onboarding. • Ensure contract schedules have deliverables to coincide with payment. • Create bids and manage from request through bid award. • Other duties as requested by clients.

  • Senior Project Engineer at Okland Construction
    Nov 2020 - Feb 2022 · 1 yr 4 mos

  • Construction Coordinator II (lay-off, lost contract) at Edison Power Constructors
    Sep 2019 - Feb 2020 · 6 mos

    • Build jobs from engineering requirements for power lines, pole, arms and transformer replacements. • Build out the helicopter jobs including trips, weights of equipment, materials, manpower, permits, safety compliance and work directly with Air Ops for completion of schedule. • Maintain all annual permits for cities and counties of operation. • Provide notification to all customers that may have power interruption during hours of operation. • Created document control for all jobs for tracking and completion verification as well as daily status reports. • Ensure proper traffic control, government agencies involved for permitting and set up. • Provide daily status report and attend weekly meeting to true up all jobs and inform if any issues needing mitigation. • Finalize all job packets, paperwork, as-builts, scans, pictures for documenting job completion.

  • Contract Administrator (8 mo contract) at GD Barri & Associates (for APS Palo Verde)
    Oct 2018 - Jul 2019 · 10 mos

    • Create and manage single source and master contracts for renewal at APS Palo Verde, ensuring labor rates, exceptions, safety requirements and any additional requests as required by customer. • Source suppliers, create request for proposals, negotiate pricing and terms, finalize contracts to reduce costs of buying goods/materials and services and to reduce risk using category management. • Provide turnkey sourcing using Power Advocate program to invite, provide scope and additional documentation, bid evaluation metrics and time table to complete bid for submission and award of bid notification. • Process change orders as submitted by Project Managers to respective job and issue subcontract supplements. • Create job numbers as required for finance and job costing; ensure projects remain on budget. • Verified time entry to scheduled project, ensure AP invoices coded to correct jobs to provide cost reports. • Assist Customer, Project Manager and Superintendent with monthly invoicing and change orders as needed to ensure compliance with contracts. • Attend on site meetings with subcontractors, Project Managers and teams to review job status and costs. • Completed all contract negotiations for vendor onboarding. • Ensure contract schedules have deliverables to coincide with payment. • Create bids and manage from request through bid award. • Other duties as requested by clients.