Assistant Project Manager - Irrigation

Position Overview

The Assistant Project Manager (Irrigation Systems) supports the full project lifecycle of irrigation and rainwater harvesting works — from design coordination and procurement, to site execution, testing & commissioning, and handover. The role requires strong technical understanding, proactive coordination, and the ability to uphold Koon Seng’s standards in workmanship, communication, and documentation.

Key Responsibilities

1. Project Coordination & Planning

• Assist the Project Manager in planning project timelines, milestones, and weekly targets.

• Coordinate with consultants, architects, main contractors, and other trades to resolve design or site issues.

• Ensure all drawings, method statements, materials, and submissions are prepared accurately and on time.

• Participate in technical meetings and prepare minutes of meeting (MOM) with clear action items.

2. Technical & Design Support

• Understand irrigation designs, including:

  • Dripline, sprinklers, valve zoning, QCV, pressure regulation

  • RWH prioritisation, PUB/NEWater make-up integration

  • Control logic, interlocking, timing cycles, and system schematics

• Review shop drawings, hydraulic calculations, and layouts for technical accuracy.

• Assist in preparing conceptual design proposals when required.

3. Site Management

• Carry out regular site walks to ensure correct installation, workmanship quality, and adherence to specifications.

• Identify and raise site issues early; propose solutions instead of waiting for escalation.

• Coordinate with site supervisors, foremen, and subcontractors to plan daily/weekly work.

• Ensure safety standards are followed.

4. Procurement & Materials

• Assist in preparing material take-offs (MTO) and procurement schedules.

• Liaise with suppliers for timely delivery and proper documentation (catalogues, datasheets, test reports).

• Track inventory and ensure critical materials are available ahead of time.

5. Testing, Commissioning & Handover

• Support the preparation of T&C procedures.

• Assist with pressure testing, flushing, sequencing tests, and control system demonstrations.

• Prepare as-built drawings, O&M manuals, and training documents for client handover.

6. Documentation & Administration

• Maintain updated project files, submissions, RFIs, progress reports, variation claims, and related records.

• Prepare weekly progress updates for internal and client meetings.

• Assist in aligning PM–Design–Accounts workflows (claims, variations, procurement, costing).

Requirements

Technical Requirements

• Diploma or Degree in Mechanical Engineering, Civil Engineering, Environmental Engineering, Building Services, or related field.

• Experience in irrigation, plumbing, sanitary, or MEP works is an advantage.

• Strong understanding (or willingness to learn) of hydraulic principles, control systems, and landscape irrigation practices.

Skills & Attributes

• Proactive, resourceful, and willing to take initiative — not waiting to be spoon-fed.

• Strong coordination and communication skills.

• Able to work independently and in a cross-department environment.

• Good documentation habits.

• Able to read drawings (AutoCAD knowledge is a plus).

• Strong problem-solving mindset and willingness to learn complex system designs.

Why Join Us

• Opportunity to work on large-scale, high-complexity irrigation and RWH systems across Singapore’s landmark projects.

• Structured learning under an experienced team with clear growth path to Project Manager or Design Manager.

• Exposure to full design-build-operate lifecycle — technical, commercial, and management experience.

• Fast-paced, supportive environment that values initiative, ownership, and continuous improvement.

Job Details

• Position: Assistant Project Manager (Irrigation Systems)

• Employment Type: Full-time

• Location: Singapore (site-based & hybrid work arrangements)

• Reporting to: Project Manager / Director

• Salary: Competitive, based on experience