Summary
Overview
Work History
Education
Skills
Accomplishments
Affiliations
Timeline
Generic

LeTrinaMarie Mantanona

Inalajan,Guam

Summary

Seasoned Secretary with several years of experience in high-volume office settings. Strong regulatory knowledge, multitasking abilities, and independent thinking skills devoted to enhancing team performance. Well-organized and hardworking with adaptability and responsiveness to changing demands.

Overview

19
19
years of professional experience

Work History

Heavy Equipment Engineer

Guam Army National Guard
FJM, Barrigada, Guam
03.2024 - Current
  • Performed routine preventative maintenance tasks such as lubrication, cleaning, adjustments on a range of vehicles and machines.
  • Assisted in troubleshooting complex problems encountered during operation by analyzing system logs and diagnostics readings.
  • Tested the performance of heavy machinery after repair or service to ensure its safe operation.
  • Maintained detailed records of maintenance activities performed on equipment.
  • Recommended changes or upgrades to existing systems based on feedback from end users or clients.
  • Analyzed operations data from the existing fleet of heavy equipment to optimize efficiency and reduce downtime.
  • Collaborated closely with other engineers in identifying areas requiring improvement in terms of productivity or safety standards related to handling large-scale machinery.
  • Conducted regular inspections of heavy equipment to identify any potential issues or malfunctions.
  • Kept records of material or equipment usage and completed entries in production logs.
  • Operated heavy equipment to demolish current structures, remove plants or trees, and clear the property of debris.
  • Signaled operators to guide the movement of tractor-drawn machines.
  • Adjusted handwheels and depressed pedals to control blades, buckets, and scrapers.
  • Followed workers' hand signals to align machines, cutter heads, or depth gauge makers with reference stakes and guidelines.
  • Adjusted throttles, switches, and pedals to operate bulldozers, excavators, road graders, or backhoes.
  • Checked fuel supplies at sites to verify adequate availability.

Board of Directors & Executive Manager, Secretary

Guam Regional Transit Authority
Upper Tumon, Guam
03.2022 - Current
  • Provided administrative support to the Board of Directors, the Executive Manager, and other staff members, as required.
  • Managed the calendar of the Executive Manager, ensuring timely and accurate scheduling of appointments.
  • Proofread documents before submission, correcting grammar, punctuation, and spelling errors.
  • Executed data entry into computer systems, ensuring accuracy of all information entered.
  • Handled confidential documents with utmost discretion and maintained organized filing systems.
  • Provided excellent service and attention to customers when face-to-face or through phone conversations.
  • Screened telephone calls, emails, and correspondence, and responded on behalf of the Executive Manager when appropriate.
  • Answered questions from internal staff members related to office policies or procedures.
  • Attended meetings with senior executives, taking minutes during discussions.
  • Maintained confidentiality regarding sensitive information related to personnel or agency matters.
  • Assisted in preparing contracts, agreements, invoices, and other legal documents.
  • Compiled reports, presentations, and briefing materials, as requested by the Executive Manager and Board of Directors.
  • Arranged video conferences with clients located around the world.
  • Prepared agendas and made arrangements for committee meetings, conferences and other events.
  • Oversaw staff correspondence, record tracking and data communications, resulting in improved automation of office operations.
  • Used voice recorder or notepad to compose and transcribe meeting minutes.
  • Composed, edited and typed complex memos and reports with job-related software.
  • Coordinated meeting logistics, including room reservations and catering services.
  • Organized travel arrangements for business trips, including flight, hotel bookings, and car rental reservations.
  • Followed up on action items resulting from meetings in a timely manner.
  • Worked successfully with a diverse group of coworkers to accomplish goals and address issues related to our products and services.

Administrative Assistant

Guahan Academy Charter School
Tiyan, Guam
07.2019 - 03.2022
  • Ensured efficient operation of office equipment such as printers, copiers, and fax machines.
  • Maintained office supplies inventory by checking stock to determine inventory level.
  • Organized and maintained filing systems for physical and electronic documents, ensuring accuracy and confidentiality of records.
  • Coordinated mailings, including sorting mail and preparing packages for shipping.
  • Scheduled appointments between the administration, parents, students, and other visitors.
  • Facilitated communication between different departments within the school administration.
  • Composed letters, memos, reports, emails, presentations, and other written correspondence, as required by management staff.
  • Update contact lists regularly to reflect changes in employee status, or contact information.
  • Professionally greeted visitors, responded to inquiries, and directed them to appropriate personnel.
  • Managed incoming calls while providing information or transferring callers to appropriate personnel.
  • Handled confidential documents in an organized fashion according to established protocol.
  • Assisted with the planning of special events by arranging catering services, securing venues, and ordering promotional materials.
  • Provided administrative support to the executive team, including scheduling meetings and managing calendars.
  • Managed database systems containing employee and student contact information.
  • Processed invoices for payment using accounting software applications.
  • Entered data into spreadsheets using Microsoft Excel or other similar programs.
  • Raised funds by organizing multiple events and diligently managed details to meet deadlines.
  • Oversaw staff correspondence, record tracking, and data communications, resulting in improved automation of office operations.
  • Kept office equipment functional and supplies well-stocked to promote efficient operations.
  • Proofread content for typo-free emails and documentation.
  • Managed daily office operations and maintained office supplies inventory, ensuring efficient workplace functionality.
  • Verified the accuracy of timekeeping records to ensure compliance with regulations.
  • Managed multiple projects simultaneously while meeting strict deadlines.
  • Maintained accurate records of all payroll transactions.
  • Confirmed attendance, hours worked, and pay rates to properly post information in appropriate records.
  • Compiled data for over 250 employees, from timesheets and other records, to determine hours worked and pay rate.
  • Tracked vacation accruals and personal leave balances for each employee.
  • Managed weekly payroll duties and submitted data to the payroll contractor.
  • Enforced payroll-related policies, procedures, and regulations to adhere to changing company standards.
  • Managed and maintained confidential employee payroll records.

School Aide

Guahan Academy Charter School
Tiyan, Guam
06.2017 - 07.2019
  • Assisted classroom teachers with lesson preparation and materials organization.
  • Provided additional support to struggling students in math, reading, and writing.
  • Monitored student behavior in the hallways, cafeteria, and playgrounds.
  • Tutored individual students or small groups in areas of academic difficulty.
  • Maintained detailed records of student progress, attendance, and behavioral issues.
  • Helped supervise recess times to ensure that all students were participating safely.
  • Supported special education programs by assisting with individualized instruction plans.
  • Collaborated with school staff to ensure a safe learning environment for students.
  • Organized field trips for students and chaperoned various activities throughout the year.
  • Assisted with clerical tasks including filing documents, photocopying materials.
  • Assisted in organizing extracurricular activities such as clubs or sports teams.
  • Prepared visual aids for classroom activities and assisted with audiovisual equipment setup.
  • Acted as a liaison between parents and guardians and teachers regarding student progress.
  • Created positive learning experiences through engaging classroom activities.
  • Developed relationships with at-risk students to provide guidance and support.
  • Conducted small group instruction on topics such as study skills and conflict resolution.
  • Facilitated parent-teacher conferences and provided interpretation services as needed.
  • Conducted assessments of student needs in order to develop appropriate interventions.
  • Intervened when necessary to de-escalate conflicts between students or with staff.
  • Offered students personalized educational, behavioral, and emotional support.
  • Utilized curriculum with life-based approach.
  • Kept students safe in classroom and outside environments.
  • Assisted children at stations during small-group learning periods.
  • Planned and led activities to develop students' physical, emotional and social growth.
  • Communicated confidential details about student behavior and performance with parents and authorized parties.
  • Communicated and collaborated well with educators from various grade levels.
  • Applied positive reinforcement to redirect negative behaviors.
  • Observed students to help teachers identify potential learning blocks and opportunities for support.
  • Assisted with implementation of student's individualized IEP at discretion and direction of teachers and administrators.
  • Supplied one-on-one attention to each student during group activities.
  • Supervised students during non-instructional times, including lunch and recess.
  • Graded assignments and tests and documented results into filing systems.
  • Managed classroom technology and assisted students in using educational software.
  • Distributed textbooks, workbooks, papers, and pencils to students.
  • Notified instructors of errors or problems with assignments.
  • Prepared handouts, study materials and other teaching aids.
  • Assisted faculty members or staff with student conferences.
  • Maintained attendance records and documented class activity.
  • Taught note-taking techniques and test strategies.
  • Provided disabled students with assistive devices and supportive technology.
  • Improved behavior with modification and positive reinforcement techniques.

STARS Summer Camp Coordinator

Guahan Academy Charter School
Tiyan, Guam
06.2016 - 07.2019
  • Kept up-to-date inventory of supplies needed for daily operations at the camp site.
  • Worked closely with vendors to obtain necessary materials for scheduled activities within budget limits.
  • Developed camp program schedules to ensure daily activities ran smoothly.
  • Encouraged positive interactions among peers by facilitating group discussions during breaks.
  • Created lesson plans that incorporated educational elements into fun, indoor, and outdoor activities.
  • Maintained accurate records of attendance and participation in various activities.
  • Coordinated special events, such as field trips or end-of-the-week activities.
  • Planned games that promoted physical activity while teaching valuable lessons about teamwork.
  • Conducted regular evaluations of staff performance and provided constructive criticism where necessary.
  • Communicated regularly with management regarding any changes or updates related to the camp program.
  • Ensured a safe environment for all participants by enforcing rules and regulations of the camp.
  • Monitored camper behavior throughout the day to ensure safety standards were being met at all times.
  • Collaborated with other leaders to plan weekly themes that would engage campers' interest.
  • Coordinated with parents to provide information about the camp's policies and procedures.
  • Provided feedback to parents regarding their child's progress throughout the summer session.
  • Supervised counselors and provided guidance in developing age-appropriate programs for children.
  • Inspected campsite areas to ensure they were clean and safe before allowing use by participants.
  • Resolved conflicts between participants in a respectful manner while maintaining fairness.
  • Managed camp finances.
  • Prepared annual budget, focusing on details to meet operational and staffing needs.
  • Produced forms, letters and documents needed for camp implementation.
  • Created and coordinated staff schedules, daily activity schedules and field trips, maintaining proper staffing levels.
  • Confirmed completion of campers' relevant enrollment and medical forms.
  • Negotiated with suppliers to obtain best rates and availability of arts, crafts, sports and camping equipment.
  • Documented and notified professionals of incidents, accidents, and supply needs.
  • Supervised daily check-in and check-out for all day campers.
  • Designed and implemented marketing plan to increase attendance through social media, email and newsletters.
  • Helped recruit, hire and train department employees.

Teacher's Assistant

Guahan Academy Charter School
, Guam
04.2014 - 06.2017
  • Helped students master assignments and reinforced learning concepts presented by teachers.
  • Instructed and monitored students in use and care of equipment and materials.
  • Worked one-on-one with special needs students to help navigate through school challenges.
  • Prepared lesson materials and visual aids to reinforce lesson concepts.
  • Acted as a liaison between students and faculty, facilitating communication and understanding.
  • Participated in professional development workshops and training sessions.
  • Graded assignments and tests and documented results into filing systems.
  • Distributed textbooks, workbooks, papers, and pencils to students.
  • Managed the distribution and collection of textbooks and other teaching materials.
  • Developed instructional materials and visual aids to supplement lesson plans.
  • Monitored student progress and provided feedback to both students and teachers.
  • Assisted in planning and implementing lesson plans in accordance with state curriculum standards.
  • Created and coordinated age-appropriate enrichment activities to drive social, emotional, and intellectual development.
  • Established positive relationships with students, parents, fellow teachers and school administrators.
  • Participated in professional development workshops to improve teaching skills and knowledge.
  • Helped teachers with material generation, lesson plan development, class preparation, scheduling, exam distribution and student mentoring.
  • Assisted in the development of individualized education plans (IEPs) for special education students.
  • Supervised children and participated with children in activities.
  • Provided clerical support to teachers, including photocopying, filing, and organizing instructional resources.
  • Facilitated small group learning activities to reinforce lesson objectives.
  • Prepared lesson materials, bulletin board displays, exhibits, and demonstrations to assist teachers in classroom preparation.
  • Laminated teaching materials to increase durability under repeated use.
  • Graded assignments and exams in a timely and fair manner.
  • Implemented classroom rules and procedures to maintain discipline and order.
  • Coordinated with teachers to identify and support students with special needs.
  • Set up and assisted with audiovisual equipment operation.
  • Proctored examinations and monitored for cheating.
  • Tutored students in course material to improve comprehension.
  • Explained class procedures, policies and important dates.
  • Notified instructors of errors or problems with assignments.

Receptionist/Office Assistant

Premium Art Photo
Agana, Guam
07.2006 - 12.2009
  • Provided excellent customer service at all times while interacting with both internal and external customers.
  • Monitored office supplies inventory and placed orders when necessary.
  • Processed customer payments using cash registers or point-of-sale terminals according to company policies and procedures.
  • Ensured that all necessary forms were completed accurately prior to submitting them for processing.
  • Compiled data from various sources into organized reports for management review.
  • Provided administrative support to staff members including typing letters, filing documents, and scanning and copying documents when necessary.
  • Managed all incoming mail distribution, courier services, faxes, and photocopying documents as requested.
  • Assisted with special projects assigned by management when required.
  • Maintained a neat reception area by organizing materials and tidying up furniture.
  • Updated daily log book with information about visitors entering the premises.
  • Verified visitors' identification cards before allowing access to the building.
  • Scheduled appointments for clients, customers, and other visitors.
  • Answered incoming calls, took messages, and transferred calls to appropriate departments or personnel.
  • Responded to inquiries from internal staff members regarding office operations.
  • Maintained an organized filing system of confidential client information in accordance with company policy.
  • Assisted with onboarding of new employees by providing orientation information and support.
  • Conducted initial screening of incoming calls to determine urgency and directed them accordingly.
  • Maintained daily calendars, set appointments with clients and planned daily office events.
  • Ensured cleanliness and organization of the reception area to maintain a professional atmosphere.
  • Supplied callers with office address and directions, employee email addresses and phone extensions.
  • Provided administrative support to staff members, including copying and scanning documents, filing paperwork, and ordering supplies.
  • Organized files, developed spreadsheets, faxed reports and scanned documents to improve organizational workflow.
  • Monitored and directed work of lower-level clerks.
  • Coordinated office activities to streamline operations and promote compliance with organizational policies.
  • Troubleshot office equipment, computer hardware and software issues.
  • Coordinated travel arrangements for office personnel.
  • Identified issues and utilized emotional intelligence and diplomatic communication to defuse.

Education

ARMY - Engineering

Fort Leonardwood
Missouri
03-2025

ARMY - Basic Combat Training

Fort Sill
Oklahoma
06-2024

Some College (No Degree) - Project Management

GCA Trades Academy
Guam

Some College (No Degree) -

University of Guam
Mangilao, Guam

High School Diploma -

Southern High School
Santa Rita, Guam
06-2005

Skills

  • Data entry
  • Document proofreading
  • Calendar management
  • Meeting coordination
  • File organization
  • Report compilation
  • Customer service
  • Confidential document handling
  • Communication skills
  • Administrative support
  • Event planning
  • Attention to detail
  • Problem solving
  • Office supply inventory
  • Prioritization and time management
  • Executive support
  • Minute taking
  • Appointment coordination

Accomplishments

  • TOP 10% - Completed Basic Training at the top 10 percent of the battery/class, and achieved promotion to the next rank before entering Advanced Individual Training (AIT).

Affiliations

  • VICE PRESIDENT- Southern Cowboys Team Association (Non-profit organization)
  • VICE CHAIR- Gadao's Giving Hands (Non-profit organization)
  • COUNCIL MEMBER- Inalahan Mayor's Planning Council

Timeline

Heavy Equipment Engineer

Guam Army National Guard
03.2024 - Current

Board of Directors & Executive Manager, Secretary

Guam Regional Transit Authority
03.2022 - Current

Administrative Assistant

Guahan Academy Charter School
07.2019 - 03.2022

School Aide

Guahan Academy Charter School
06.2017 - 07.2019

STARS Summer Camp Coordinator

Guahan Academy Charter School
06.2016 - 07.2019

Teacher's Assistant

Guahan Academy Charter School
04.2014 - 06.2017

Receptionist/Office Assistant

Premium Art Photo
07.2006 - 12.2009

ARMY - Engineering

Fort Leonardwood

ARMY - Basic Combat Training

Fort Sill

Some College (No Degree) - Project Management

GCA Trades Academy

Some College (No Degree) -

University of Guam

High School Diploma -

Southern High School

Similar Profiles

CREATE PROFILE
LeTrinaMarie Mantanona