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We take pride in being recognized as one of Hawaii’s Top 250 businesses. With over 70 years of serving Hawaii, we remain committed to delivering quality products and services. This commitment to high standards allows us to create an ideal environment for continuous learning and development. Our employees have the added benefit of working alongside industry leaders who provide valuable insight into our industry and teach through professional mentorship.



EMPLOYEE BENEFITS

Benefits offered to our valued employees include paid medical insurance, 401(k) retirement plan, paid time off, holidays, group life insurance, flexible spending accounts, and supplemental insurance.


READY TO APPLY?

It's simple. Complete our employee application and email it with your resume to hr@senplex.com

Sen Plex Corporation and its subsidiaries, Oahu Plumbing & Sheet Metal, Ltd, Oahu Air Conditioning Company and Oahu Air Conditioning Service, Inc. are equal opportunity and affirmative action employers. Reasonable accommodations may be made to enable qualified individuals with disabilities to perform the essential functions.

Available Positions

Billing Clerk

Duties and Responsibilities:

• Accurately prepare billing and credit memos with the proper supporting documentation

• Process credit card payments

• Calculate payment amount on COD invoices

• Follow up on collection for all COD accounts

• Preparation and reconciliation of master billings to individual invoices

• Coordinate with concerned parties to gather information needed for billing

• Verify cost to ensure accurate pricing

• Investigate and resolve discrepancies

• Mail and/or upload invoices to customers

• Update billing notes as necessary

• Respond to customer queries related to invoices sent

• Generate month-end closing reports in a timely manner

• Other duties assigned


Desired Qualifications:

• Associate degree in accounting is preferred

• 3+ years of billing experience

• Proficiency in Microsoft Office products

• Excellent written and verbal communication skills

• Must reside on Oahu and be eligible to work in the United States

Contracting Estimator

Duties and Responsibilities:

• Prepare estimates, bids and proposals for the installation, repai, and/or replacement of equipment and systems

• Review published plans and specifications, conduct site visits, assess existing conditions that may affect the estimate, meet with client/owner as needed

• Prepare accurate take-offs to determine material, component, equipment, and subcontractor pricing

• Estimate all direct and indirect "in-house" labor needs

• Consult with Field Supervisors, Project Managers, Coordinators, Safety Manager and other company personnel as needed

• Formulate pricing and draft estimates and proposals using approved cost factors, processes, following established procedures

• Identify and resolve issues and conflicts involving estimates, bids, and proposals

• Participate in job turnover meetings

• Respond to requests for assistance and support from other company personnel involved in the estimating of construction, repair, or maintenance of mechanical systems and/or equipment state-wide

• Review industry publications, monitortechnological changes/improvements and new developments in the industry

• Make recommendations on ways to improve workflow and increase productivity and efficiency

• Develop positive business relationships with vendors, clients, owners, and subcontractors

• Perform other duties as assigned


Desired Qualifications:

• 3+ years estimating experience, HVAC knowledge desirable

• Ability to work with changing priorities demands and deadlines while maintaining sound analytical and problem-solving skills

• Conscientious about timeliness of assignements and quality of work product

• Possess exceptional written and verbal communication skills, including ability to effectively interact with operation personnel and management

• Ability to work independently, collecting and processing data and information, formulating conclusions and making recommendations

• Promptly address any issues or questions, maintaining a professional demeanor at all times

• Technically competent with various software programs, such as Microsoft Outlook, Word, Excel, and Quickpen

• Driver's license, with a clean driver abstract

• Able to travel as needed for project

Controller

Duties and Responsibilities:

• Responsible for managing the accounting department including initiating new processes and procedures aimed at creating efficiency

• Oversee all aspects of accounts payables, accounts receivables, and closely monitor cash functions

• Ensure payroll is accurately processed and all related reporting and compliance requirements are met

• Ensure proper job cost reporting of transactions, prepare quarterly job closing and related journal entries

• Prepare and analyze Work-In-Process reports

• Perform month-end closing, including analysis of operation costs and results

• Issue monthly financial statements, perform analytical review to ensure accurate accounting records are maintained

• Prepare quarterly reports for financial institutions and Board of Directors

• Prepare annual budget

• Coordinate annual review by independent auditors

• Ensure compliance with all applicable laws, rules, and regulations

• Performs special projects and completes all other duties as assigned


Desired Qualifications:

• Bachelor’s Degree in Accounting or Finance

• 8 - 10+ years of complex, progressive accounting experience, including construction accounting

• Solid GAAP and financial reporting technical skills

• Exceptional work ethic, strong time management skills with the ability to meet deadlines

• Advanced decision making, analytical and problem-solving abilities

• Knowledge of Timberline software desirable

• Strong communication skills at all levels of the organization and a desire to manage personnel

• Demonstrated knowledge with Microsoft Office products – highly skilled in Excel including spreadsheets, pivot table and other key excel functions

Project Engineer

Duties and Responsibilities:

• Assist PM in coordinating with the general contractor and/or owner; Assist PM on all project meetings, maintaining communication regarding all project related matters

• Assist PM in developing and establishing a good business and long-term customer relationship with general contractors and/or owner

• Review Contracts, Project Plans and Specifications

• Prepare subcontract agreements, purchase orders, schedule of values and customer billings

• Review submittals and shop drawings for accuracy, efficiency, and clarity

• Responsible for the purchasing, scheduling and delivery of equipment and materials required for the project, ensure accuracy to project plans and specifications

• Prepare and submit change order estimates and work orders, confirm completion of changes

• Identify and recommend appropriate cost savings/value engineering items

• Assist PM in working with general contractor and/or owner, subcontractors, vendors and various internal departments and field throughout the negotiation process, provide clarification and resolution as need

• Prepare work order and budget for any change order work

• Identify, analyze and resolve problems through RFI process, define any cost or schedule impact

• Provide project schedule and updates to the appropriate departments

• Prepare and submit closing documents, maintain all project documentation diligently

• Assist PM from inception through closing of the project


Desired Qualifications:

• Preferably with Bachelors Degree in Mechanical Engineering

• Project Engineering experience

• Understanding of Trade Standards and Practices, building codes and standards

• Ability to read and understand specifications and plans

• Must be able to perform complex tasks and handle multiple priorities while maintaining a professional demeanor at all times

• Excellent time management skills, proven ability to meet all required deadlines

• Excellent verbal and written communication skills

• Must reside on Oahu and be eligible to work in the United States

• Ability to understand cost estimating including labor units used for estimating and material costing

• Strong computer skill and quick learner of various computer programs

Project Manager

Duties and Responsibilities:

• Direct and manage project implementation/execution from start to finish

• Review and verify project scop, goals and deliverables to ensure compliance with project

• Prepare project estimates for presentation to the general contractor and/or owner

• Work with general contractor and/or owner throughout the negotiation process, provide clarification and resolution as needed

• Prepare and present the final bid to the general contractor and/or owner

• Acts as the primary contact for the general contractor and/or owner; attend project meetings, maintain communication regarding all project related matters

• Plan and schedule project timelines and milestones using appropriate tools: Identify and manage project dependencies and critical path; track project milestones and deliverables; coordinate work schedule with customer and field personnel

• Identify and recommend appropriate cost savings/value engineering items

• Prepare subcontract agreements, schedule of values and customer billings

• Review shop drawings for accuracy, efficiency, and clarity

• Responsible for the purchasing, scheduling and delivery of equipment and materials required for the project, ensure accuracy to project plans and specifications: review, verify and/or amend estimated materials and resources needed to complete project; coordinate purchase/acquisition of necessary equipment and materials

• Prepare and submit change order estimates and work orders, confirm completion of changes

• Provide regular project updates to the appropriate departments, stakeholders

• Prepare and submit closing documents, maintain all project documentation

• Positive contributor to company initiatives and commitment to improve department efficiencies

• Mentor subordinate and peer to contribute to continuous learning and development

• Promote and develop professional relationships with vendors, clients, owners and subcontractor

• Perform duties as assigned


Desired Qualifications:

• Bachelor’s Degree in engineering, Mechanical Engineering preferred

• Professional Engineer License a plus

• 5+ years of experience in HVAC trade

• 8+ years of project management experience from conception to delivery

• Solid understanding of Trade Standards and Practices, building codes and standards

• Ability to read and understand specifications and plans

• Solid understanding of the cost estimating including labor units used for estimating and material costing

• Extensive knowledge of scheduling, cost control, and safety procedures

• Possess exceptional written and verbal communication skills, including ability to effectively interact with operation personnel and management

• Excellent time management skills, proven ability to meet all required deadlines while handling multiple priorities

• Strong computer skills in Microsoft Office, aptitude to learn various computer programs such as Timberline and Quickpen

• Strong leadership skills and proven ability to lead multiple teams at once

• Driver’s License with a clean traffic abstract

• Able to travel as needed for project

Service Estimator

Duties and Responsibilities:

• Understand trade standards and practices, building codes and standards

• Read and understand specifications, architectural and mechanical plans

• Understand the bid process including labor and material costing

• Manage entire life cycle of assigned projects, taking ownership of all communication, contract agreements, budgets, and closing documentation

• Develop and maintain client relationships to achieve cooperation and establish partnerships

• Promptly address any issues and find satisfactory solutions


Desired Qualifications:

• Bachelor’s in Mechanical, Electrical, or Civil Engineering, or other industry related field

• 1-2 years of HVAC experience in lieu of education

• Ability to work independently, collecting and processing data and information, formulating conclusions and making recommendations

• Conscientious about timeliness of assignments and quality of work product

• Possess exceptional written and verbal communication skills, including ability to effectively interact with operation personnel and management

• Strong organizational skills to manage multiple assignments effectively and efficiently

• Must reside on Oahu and be eligible to work in the United States

• Drivers License with a clean traffic abstract

Warehouseman

Duties and Responsibilities:

• Responsible for receiving incoming inventory, materials and parts (occasional manual offload)

• Check all received freight for damage and count according to company procedures; report damage, shortages, overages, and other discrepencies on the outgoing manifest or to supervisor

• Responsible for outgoing shipments; pre-load and deliver materials, parts or equipment to various jobsites or prepare for shipping to the neighbor islands

• Pick-up will calls from various vendors for all departments

• Operate forklift to move parts, equipment, supplies, etc.

• Clean and maintain warehouse and yard area

• Provide support to all departments in relocation, removal of office supplies, equipment, etc.

• Assist field and shop as needed


Desired Qualifications:

• High school diploma

• Warehouse experience

• Experience driving a forklift

• CDL (Commercial Driver's License) highly desirable

• Must have a valid Driver’s License with a clean Traffic Abstract

• Dependable, honest and able to accept constructive criticism

• Have good communication skills and ability to follow instructions

• Able to lift 50 pounds, with or without assistance

• Must be available to work occasional weekends

• Must reside on Oahu and be eligible to work in the United States

Featured projects

OACS and OPSM are full-service mechanical companies specializing in all types of commercial heating, ventilation, air conditioning, plumbing, and sheet metal services. Here are a few of the projects we have worked on: