Leo Onyekachi

Daniel is a strategic Estimator and Quantity Surveyor with over 10 years of expertise in cost management, supplier engagement,

and delivering competitive tender solutions across Construction, Engineering, and Oil & Gas industries. Proven ability to reduce project material costs by up to 15%, streamline procurement lead times by 20%, and design winning cost structures for tenders exceeding $100M. Skilled at leveraging advanced cost databases and market intelligence to enhance project profitability while maintaining compliance with industry standards.

Senior Cost Estimator | Amaiden Energy Ltd. – Bonny Island, Rivers State. July 2025 – Present

• Review, challenge, and validate contractor and consultant cost estimates to ensure accuracy, transparency, and value for money.
• Lead the development of project budgets from feasibility through to final delivery, ensuring alignment with strategic financial objectives.
• Prepare Class 1–5 cost estimates (as applicable) to support business cases, funding approvals, and change control processes.
• Provide cost input and analysis during procurement processes, including evaluation of bids and contract negotiations.
• Perform cost benchmarking using internal and external data to validate project estimates and identify cost-

saving opportunities.

• Support capital governance processes by producing and presenting cost reports, variance analyses, and risk-

adjusted estimates to internal stakeholders.

• Evaluate cost implications of scope changes and provide recommendations to support informed decision-

making.

• Work closely with project managers, planners, finance, and external consultants to ensure consistent cost management across all project phases.

Cost Estimator | Seflam SGL Ltd. – Bonny Island, Rivers State October 2024 – July 2025

• Achieved 12% procurement cost savings through strategic supplier engagement and market trend analysis for the Nigeria LNG RA Upgrade Project.
• Spearheaded the development of a cost-tracking database, reducing estimation errors by 20% and improving resource allocation.
• Collaborated with procurement teams to negotiate competitive supplier contracts, cutting lead times for PO placements by 20%.
• Collaborated with commercial and procurement teams to evaluate tender submissions, contributing to the selection of value-for-money solutions without compromising quality.
• Delivered comprehensive cost variance and tender reports, enabling stakeholders to reduce unplanned expenditure by $200K.
• Advised senior leadership on cost risk and contingency strategies that resulted in more resilient budgeting for major capital investments.

Quantity Surveyor | First Marine & Engr. Services Ltd. – Bonny Island, Rivers State. Nov. 2022 – October 2024

• Optimized cost plans for the Nigeria LNG Train 7 Project, valued at over $10B, delivering $10M+ in savings through effective resource allocation and negotiation strategies.
• Reduced cash flow discrepancies by 15% via detailed cost and value reporting, ensuring financial accuracy across all projects.
• Drove a 10% improvement in contractor reliability by fostering strong supplier relationships and ensuring timely material deliveries.
• Identified and mitigated potential cost risks, preventing over $250K in unforeseen project expenses.
• Invoiced accurately and timely through detailed calculations, reducing payment time by at least 5%.

Quantity Surveyor | Abokus Integrated Security Ltd. – Eleme, Rivers State. July 2022 – Nov. 2022

• Delivered a 95% success rate in tenders by producing accurate cost breakdowns and aligning methodologies with project goals.
• Negotiated and secured cost-efficient supplier contracts, achieving 10% savings on project costs for perimeter security installations for Port Harcourt Refinery Company.
• Enhanced payment cycle efficiency by improving valuation processes, reducing approval delays by 20%.

Quantity Surveyor | Royal Haskoning DHV Nig. Ltd. – Onne, Rivers State. March 2021 – Nov. 2022

• Designed cost forecasts for $50M infrastructure projects, ensuring budget adherence within 5% variance across all phases on projects like West Africa Container Terminals Onne and Nigeria Breweries Enugu.
• Streamlined tender processes, improving response times by 15% and increasing bidding success rates.
• Minimized budget deviations by 10% through diligent monitoring of project progress and continuous cost database updates.

Quantity Surveyor | Monier Construction Co. Ltd, Port Harcourt, Rivers State. July 2018 – Sept 2019

• Estimated and monitored project budgets for large-scale drainage and road construction works (NEWMAP projects) worth over $15M.
• Oversaw subcontract administration and cost negotiations.
• Properly documented all project correspondences, leading to easy accessibility and ease of work.

Estimator | Megastar Tech & Construction Co. Ltd. – Port Harcourt, Rivers State. January 2014 – June 2018

• Reduced estimation errors by 15% by integrating Planswift into workflows, improving overall project profitability on projects like Rivers Monorail Project and PTDF Skill Acquisition Centre.
• Successfully estimated costs for large-scale projects, such as the $25M Rainbow Town and $35M NCDMB headquarters, with accuracy within a 5% margin.
• Accelerated tendering processes by mentoring junior estimators, achieving faster submission timelines and higher quality outputs.

Quantity Surveyor | Subsidy Reinvestment & Empowerment Programme – Abuja. June 2013 – December 2013

• Revalidated cost estimates for over 30 Primary Health Centres, reducing renovation budgets by 10%.
• Provided actionable recommendations that improved project cost efficiency across multiple project sites.

Education

Higher National Diploma (HND) in Quantity Surveying – Federal Polytechnic, Ado-Ekiti, Ekiti State, Nigeria.

National Diploma (ND) in Quantity Surveying – Federal Polytechnic, Ado-Ekiti, Ekiti State, Nigeria.

B.Sc. Quantity Surveying - Nexus Int’l University (in view).

Trainings and Certifications

• Member, Nigerian Institute of Quantity Surveyors (NIQS)
• Licensed by Quantity Surveyors Registration Board of Nigeria (QSRBN)
• Member, American Association of Cost Engineers (AACE) – (In view)