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Chathura Abayakoon, Commercial Manager

Chathura Abayakoon

Commercial Manager·Obermeyer Middle East GmbH (Consultant)

United Arab Emirates

Master's degree, Construction Law

Work experience

Total years of experience: 16 years, 9 months

Commercial Manager

September 2025 - Present

Obermeyer Middle East GmbH (Consultant)

Abu Dhabi, United Arab Emirates

September 2025 - Present

• Drafting, reviewing, negotiating, and finalizing Design & Supervision Consultancy Agreements, hiring contracts, sub-consultancy agreements, and other commercial documents in full compliance with UAE laws and applicable contractual frameworks.
• Evaluating contractor-submitted variations, claims, and PS/PC adjustments, and preparing and submitting PVRs, VOs, commercial assessments, cost reports, and dashboards highlighting risks, trends, and anticipated variances for both private and government clients (including Abu Dhabi Police and ALDAR).
• Certifying contractor and sub-consultant payment applications, and managing Obermeyer’s own design and supervision payment applications, ensuring accuracy, contractual compliance, and timely processing.
• Leading tender documentation and evaluation processes, including assessing technical and commercial submissions and preparing comprehensive recommendation reports.
Company industry:
Business Consultancy Services

Senior Specialist

August 2021 - February 2024

Abu Dhabi Executive Office (Government)

Abu Dhabi, United Arab Emirates •Hybrid

August 2021 - February 2024

• Analysed capital project proposals/ appraisals received from different government entities such as Abu Dhabi General Services PJSC (Musanada), ALDAR Properties PJSC, Department of Municipalities and Transport (DMT), Abu Dhabi Ports (ADP), Abu Dhabi Maritime Academy (ADMA), Abu Dhabi Housing Authority (ADHA), Department of Education and Knowledge (ADEK), Department of Health - Abu Dhabi (DOH), Abu Dhabi Sports Council (ADSC), Environment Agency - Abu Dhabi (EAD), etc. and giving my opinion in commercial perspective and recommending the budget for varies type of building and infrastructure projects to issue the decrees to the relevant government entity.
• Investigated, analysed, and recommended an additional budget for variations and claims for ongoing projects according to the requests received from government entities.
• Audited and approved contractors’ and consultants’ advance, interim, and final payment certificates for more than 200 governmental ongoing capital projects to proceed with payments.
Company industry:
Project & Construction Planning

Senior Quantity Surveyor / Contract Administrator

July 2018 - August 2021

Al Falah Holding (Developer)

Abu Dhabi, United Arab Emirates

July 2018 - August 2021

• Mainly involved in drafting, reviewing, negotiating, and finalising various types of standard FIDIC and bespoke contracts (i.e. construction contracts, subcontracts, consultancy agreements, sales & purchase agreements, rental agreements, tenancy contracts, service agreements, NDA, confidentiality agreements, advance and performance guarantees, parent company guarantees, retention guarantees LOI, LOA, MOU, etc.)
• Examined variations and claims received, with consultants’ determinations and approvals, and provided recommendations on behalf of the developer.
• Managed quantity surveyors and assistant quantity surveyors effectively and verified quantities and progress of work done by them, and approved payments for contractors and consultants.
Company industry:
Real Estate

Senior Quantity Surveyor

November 2017 - July 2018

Parkway International Contracting LLC (Contractor)

Dubai, United Arab Emirates

November 2017 - July 2018

• Submitted notices on time and finalised EOT and prolongation claims, variations, PC, and PS Items.
• Submitted with supporting documents and finalised the advance and interim payments.
• Produced monthly internal cost value reconciliations (CVR) and detailed cost reports for the luxury 126-villa development in Mohammed bin Rashid City (Dubai Hills Estate), incorporating key performance metrics such as CV, SV, CPI, SPI, BAC, EAC, and VAC.
Company industry:
Construction & Building

Project Quantity Surveyor

August 2016 - November 2017

Arkiplan Consulting Architects & Engineers (Consultant)

Dubai, United Arab Emirates

August 2016 - November 2017

• Determined and finalised variations, PC and PS items, EOT, and prolongation claims submitted by the contractor for two government staff accommodation projects for Al Wasl LLC.
• Submitted monthly cost report with the forecasted completion date and CTC values to the Employer.
• Reviewed and certified the Contractor's advance, interim, and final payment statements.
Company industry:
General Engineering Consultancy

Consultant Quantity Surveyor

July 2014 - August 2016

National Engineering Bureau (NEB) (Consultant)

Dubai, United Arab Emirates

July 2014 - August 2016

• Determined and finalised all post-contract commercial activities such as variations, PC and PS items,
EOT, prolongation, disruption claim, and all payment certificates for these remarkable projects:
◦ Marina 101 (6B+G+100Floors) 425m in height, the second tallest project in in contract price: AED 745 million Marina 106 (6B+G+103Floors+RF) 445m in height, contract price: AED 780 million
◦ Floors) contract price: AED million
• Prepared preliminary estimation reports/ feasibility studies for many commercial, residential, and villa
projects for clients review while working in the head office.
• Analysed requested pre-qualifications and accordingly sent invitations to tenderers (ITT) for many
commercial, residential, and villa projects, and finally finalised tender and contract documents.
Company industry:
Business Consultancy Services

Estimation Engineer

November 2013 - June 2014

City Diamond Contracting LLC (Contractor)

Dubai, United Arab Emirates

November 2013 - June 2014

• Preparation of Bill of Quantities as per drawing and specification for design and built projects
• Site inspection for tendering purpose
• Taking off quantities according to POMI, SMM7 and sometimes CESMM3
• Pricing BOQs as per tender documents
• Preparation financial and technical submission
• Attending meetings with senior management and preparation of post tender clarification
• Coordination with consultants/ employers (developers)
• Market study and analysis basic materials
• Floating enquiries and collecting quotations from sub contractors
• Negotiation with sub contractors
• Preparation of sub contract agreements
Company industry:
Construction & Building
Job role:
Engineering

Quantity Surveyor

June 2012 - October 2013

Frayland Construction & Interiors LLC (Contractor)

Dubai, United Arab Emirates

June 2012 - October 2013

• Identifying and quantifying variation
• Valuing variation with existing rate
• Valuing variation with new rates when existing rate is not applicable
• Taking off quantities for LPOs/ purchasing materials
• Participating for joint measurement with sub contractors for their work done
• Preparation payment certificates for sub contractors according to the contract agreement
• Preparation our monthly payment certificate
• Working with four ongoing projects
• Supporting to Senior Quantity Surveyor for CVR report
• Checking quantities from tender drawing and supporting to tender team also
Company industry:
Construction & Building
Job role:
Construction and Building

Quantity Surveyor / Planning Engineer

June 2011 - March 2012

Indian Trading Contracting Co. WLL (Contractor)

Doha, Qatar

June 2011 - March 2012

• Taking off quantities from Architectural, Civil & MEP drawings
• Making query sheet and getting answers
• Preparation of rate breakdowns
• Pricing of BOQs
• Preparation of interim payment certificates
• Identifying and finalizing of variations
• Planning and scheduling projects using Primavera P6
• Preparation of manpower & equipment schedule
• Preparation of estimated budget for Projects
Company industry:
Construction & Building
Job role:
Construction and Building

Site Engineer / Quantity Surveyor

March 2011 - June 2011

KES Engineering (Pvt) Ltd (Contractor)

Colombo 10, Sri Lanka

March 2011 - June 2011

• Setting out and giving vertical & horizontal coordinates
• Construction of side drainage with reinforced concrete
• Updating progress of work with MS Project 2007
• Attending progress meeting with client and Engineer
• Preparation of Sub-grade
• Laying ABC and construction of Sub Base
• Construction of road-base
• Effectively utilizing and maintaining machineries
• Preparing monthly payment certificate & submitting to Engineer
• Handling & recording day-works
• Quantifying and pricing variations
• Attending to check payment certificate with Engineer’s representative at site
Company industry:
Civil Engineering
Job role:
Civil Engineering

Site Engineer

September 2010 - February 2011

Hyundai Engineering & Construction Co. Ltd (Contractor)

Colombo 1, Sri Lanka

September 2010 - February 2011

• Responsible for quality controlling and categorizing from rock boulders to aggregate under several categories
• Coordinating with all responsible persons and effectively and efficiently arranging barges to send rock boulders from Wadduwa (LOP) site to Colombo post expansion project
• Worked for scheduled day and night shifts and fully responsible for safety of more than 200 workers including supervisors and foremen
Company industry:
Civil Engineering
Job role:
Civil Engineering

Quantity Surveyor

May 2010 - September 2010

Akila Engineering (Pvt) Ltd (Subcontractor)

Hambantota, Sri Lanka

May 2010 - September 2010

• Taking off quantities for work done of excavation by getting coordinates thru total station
• Used Surfer 6 software to evaluate excavated quantity and generate reports
• Preparation and submitting monthly payment application
Company industry:
Construction & Building
Job role:
Engineering

Site Engineer

March 2009 - April 2010

Senok Trade Combine (Pvt) Ltd (Contractor)

Male, Maldives

March 2009 - April 2010

• Construction of harbour basin and channel by excavating, construction of jetty with precast quay walls and construction of breakwater and revetment
• Effectively and efficiently utilizing heavy construction machineries and equipments
• Preparing and submitting monthly payment application to the consultant and finalizing variations
Company industry:
Civil Engineering
Job role:
Civil Engineering

Trainee Engineer

January 2008 - January 2009

Bandaranayake International Airport / Sanken Lanka (Pvt) Ltd

Katunayake, Sri Lanka

January 2008 - January 2009

Gained training as well as helped the employer by doing works under their supervision for 1 year periods. Involved in concrete, and finishing works for 12-storey building and two storeys pre-cast building project as well.
Company industry:
Construction & Building
Job role:
Construction and Building

Education

Massey University

July 2025

July 2025

Master's degree, Construction Law

New Zealand

Heriot-Watt University (Dubai Campus)

November 2018

November 2018

Master's degree, Civil Engineering and Construction Management

United Kingdom

Sheffield Hallam University

June 2014

June 2014

Bachelor's degree, Quantity Surveying and Construction Management

United Kingdom

Pearson Education Ltd.

January 2013

January 2013

Diploma, Quantity Surveying

United Kingdom

University of Moratuwa

January 2009

January 2009

Diploma, Civil Engineering

Sri Lanka

Skills

Quantity Surveying

Expert

Primavera P6

Intermediate

Ms Project 2007 & 2010

Intermediate

Auto Cad 2010 2D/3D

Expert

Quantity Surveying

Expert

Delay analysis

Intermediate

FIDIC 1987 & 1999

Expert

POMI, CESMM3, SMM7, NRM2, CESMM4

Expert

Highway/ Roads and Infrastructure

Expert

High rise buildings/ Skyscrapers

Expert

Procurement

Expert

Negotiation

Expert

Claims Management

Expert

Contract Administration

Expert

CONSTRUCTION

Intermediate

CONSTRUCTION LAW

Intermediate

COMPUTER ENGINEERING

Intermediate

NON DESTRUCTIVE TESTING NDT

Intermediate

CONTRACT NEGOTIATION

Intermediate

CONTRACT MANAGEMENT

Intermediate

QUANTITY SURVEYING

Intermediate

COMMERCIAL MANAGEMENT

Intermediate

FINANCIAL EFFICIENCY

Intermediate

CONTRACT COMPLIANCE

Intermediate

Marine Construction

Intermediate

Claims Management

Expert

Negotiation

Expert

Contract Administration

Expert

Estimation

Expert

Highways

Intermediate

Procurement

Expert

CIVIL ENGINEERING

Intermediate

CONSTRUCTION LAW

Intermediate

AGILE PROJECT MANAGEMENT

Intermediate

CONTRACT COMPLIANCE

Intermediate

CONTRACT MANAGEMENT

Intermediate

FINANCIAL EFFICIENCY

Intermediate

MANAGEMENT

Intermediate

MICROSOFT PROJECT

Intermediate

PLANNING

Intermediate

QUANTITY SURVEYING

Intermediate

CONSTRUCTION

Intermediate

CONTRACT COMPLIANCE

Intermediate

CONTRACT DRAFTING

Intermediate

CONTRACT MANAGEMENT

Intermediate

CONTRACT NEGOTIATION

Intermediate

CORPORATE GOVERNANCE

Intermediate

COST CONTROL

Intermediate

FIDIC TEMPLATES

Intermediate

PROCUREMENT

Intermediate

QUANTITY SURVEYING

Intermediate

Social profiles

Languages

English

Intermediate

Memberships

Charted Institute of Arbitrators

Membership No: 34291

June 2015

Chartered Institute of Building

Membership No: 2018078

September 2015

Australian Institute of Quantity Surveyors

Membership No: 22936,

April 2019

Training and Certifications

Certifications
Sound Contract Administration (FIDIC
Certificate in Forensic Schedule Analysis
Advanced Contract Administration (FIDIC
Contract Administration Masterclass
Shipping Law and Practice (ICLP)
Golden
Certificate in Forensic Schedule Analysis
Certificate in Sound Contract Administration
Nov 2012 - Mar 2013
Certificate in Contract Administrator - Master Class
Mar 2019
Certificate in Contract Administration - Advance Course
Jan 2013 - Apr 2013
Training
Certificate in Forensic Schedule Analysis
College of Contract Management - United Kingdom
Nov 2018

Hobbies and interests

Chess, Cricket, Need for speed, Call of Duty, ect...

We, as Hiru Cricket team got the place of runners up at SLQS cricket tournament