Summary
Overview
Work History
Education
Skills
Certification
Affiliations
Timeline
Generic

THILANKA PERERA

Summary

Senior Engineer with extensive experience in construction and engineering projects, specializing in quality assurance on Liner system, test pumping, and hydraulic barrier wall/ Grout curtain construction for dewatering purposes. Proven ability to manage complex projects, ensure compliance with specifications, and collaborate effectively with stakeholders.

Overview

4
4
years of professional experience
1
1
Certification

Work History

Senior Engineer

WSP Australia
04.2025 - Current
  • Engaged by the client as the consultant Engineer to conduct inspections, monitoring, and quality assurance, ensuring adherence to specifications and regulatory requirements for Tank (70ML & 40ML) partial liner replacement works.

Senior Engineer

WSP Australia
01.2025 - Current
  • Conducted and supervised test pumping operations to evaluate aquifer properties and groundwater potential after hydraulic barrier wall construction compared to baseline evaluation in 2021.
  • Collaborated with hydrogeologist, environmental scientists, and other stakeholders to ensure accurate data collection and interpretation.
  • Adaptable and proficient in learning new concepts quickly and efficiently.
  • Worked well in a team setting, providing support and guidance.
  • Prepared detailed reports, graphs, and presentations summarizing findings of comparison.

Project Engineer

WSP Australia
04.2022 - 12.2024
  • Managed construction of a full-scale hydraulic barrier wall, including box cut, CSB (slurry) wall, and grout curtain (2 km in length and up to 90 m depth).
  • Performed health and safety checks and reviewed health and safety documents and JHAs.
  • Supervised grout batching plant, grout injection operations, drill rig (Sonic drilling), and excavation.
  • Logged Channel Iron Deposits (CID) and Bedded Iron Formation (BIF) with PQ3 diamond core and Reverse Circulation (RC) drilling.
  • Conducted soil/rock logging with gINT software and performed Pressure Meter Tests (PMTs) and data interpretation.
  • Supervised ‘Slurry Wall' construction QA/QC and installed Vibrating Wire Piezometers (VWPs).
  • Developed and interpreted hydrographs from piezometer and surrounding groundwater data.
  • Managed project data in the system and daily reports, plotting survey data in AutoCAD.
  • Provided technical expertise throughout all phases of the project, ensuring accurate execution of designs and specifications.
  • Collaborated with other departments to facilitate successful project completion.
  • Conducted technical evaluations of engineering designs and test results.
  • Trained and mentored junior engineers, providing guidance and direction.

Construction Quality Assurance Engineer

Terra Firma Laboratories
07.2021 - 04.2022
  • Provided independent inspection, verification, and site-level quality assurance standards to ensure the landfill facility is built in full compliance with specifications.
  • Conducted comprehensive risk and environmental impact assessments and suggested process improvements.
  • Assisted in building a comprehensive project monitoring database with customized workflows.
  • Acting independently onsite as a CQA officer for a Multiple layer Geomembrane lining system for a large-Scale Landfill project in remote Western Australia.
  • Daily observing and inspections of different welding types of HDPE and observing different testing to check faulty welds (Destructive welding, air pressure testing, vacuum testing and...). QA on GCL and material quality while observing geotextile layer specification.
  • Verified CQA program specifications to the site whilst identifying and recommending inconsistencies of the detailed design to the construction manager efficiently.
  • Performed field and laboratory testing of materials, including geomembranes, geotextiles, and other geosynthetic products.
  • Reviewed and verified construction documentation, including material certifications, test reports, and as-built drawings.
  • Ensured adherence to health and safety regulations during all quality assurance activities.
  • Prepared detailed quality assurance reports and presented findings to senior management and clients.
  • Prepared and submitted quality reports, RFIs, TQs, NCRs, and audit reports, maintaining a 100% on-time submission rate.
  • Conducted laboratory assessments including compaction, sample preparation, PI's, CBRs, LA Abrasion, and PSD testing.
  • Performed field sampling for soils, aggregating density testing, and moisture testing (compaction testing).
  • Executed Field Arc testing and Geosynthetics testing for geographic sampling.
  • Implemented field and laboratory testing for concrete including slumps, cylinders, compression tests, and relevant civil tests.
  • Assisted in training new QA engineers, providing guidance on best practices and company-specific procedures.

Education

Bachelor of Engineering (Civil) Honours -

Edith Cowan University
Perth, WA
07-2021

Skills

  • Project Management
  • Construction Planning
  • Risk Management
  • Team Leadership
  • Site Inspections
  • Safety Compliance
  • Construction Software (eg, AutoCAD, gINT)
  • Quality control
  • Staff training
  • Critical thinking
  • Quality assurance controls

Certification

  • [Certification Name], [Issuing Organization], [Year]

Affiliations

Member of Engineers Australia, Member ID: 9776150

Timeline

Senior Engineer

WSP Australia
04.2025 - Current

Senior Engineer

WSP Australia
01.2025 - Current

Project Engineer

WSP Australia
04.2022 - 12.2024

Construction Quality Assurance Engineer

Terra Firma Laboratories
07.2021 - 04.2022

Bachelor of Engineering (Civil) Honours -

Edith Cowan University

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THILANKA PERERA