Mehmet Gokhan Celik

Makyol – Özaltın Joint Venture · Romania

Transylvania Motorway (A3), Meseș Tunnel & Highway Section — 41 km motorway incl. 2.89 km twin-tube tunnel (Romania’s longest highway tunnel) · contract value ≈ €1.2 billion

• Head the cost control function on a €1.2bn EU-region motorway megaproject, giving JV management a transparent view of cost exposure, forecast, and corrective actions.
• Designed and deployed SiteCortex — a self-developed integrated cost control platform — linking site quantity tracking, procurement, warehouse, and subcontractor data with budget baselines in a single real-time reporting system.
• Established repeatable CBS/WBS, monthly forecasting, cash-flow, and action-tracking routines across JV departments, with clear ownership from risk identification to closure.
• Built automated cost performance dashboards (SQL + Power BI) giving management live budget-vs-actual visibility.

Sine Midas Stroy LLP (Head Office) · Astana, Kazakhstan

Company-wide portfolio of multi-phase infrastructure projects

• Owned planning, scheduling, budgeting, and management reporting for the company’s entire project portfolio from head office.
• Developed a custom ERP system with automated Power BI reporting, adopted company-wide.
• Built a C# integration layer between Primavera P6, SQL Server, and Power BI, enabling real-time project analytics.
• Designed SQL data pipelines synchronizing field-collected data with head office in real time.
• Cut budget reporting time by 80% by replacing one-off manual reporting with a sustainable, end-to-end process for data collection, costing, validation, and reporting.
• Performed delay analysis and time impact analysis in Primavera P6, supporting EOT claims and risk mitigation strategies.

Su-Yapı Engineering & Consulting Inc. · Uzbekistan

Khazarbag–Akkapchigay Canal System — 300 km · Islamic Development Bank (IsDB) funded · US$89.55 million

• Represented The Engineer’s team in protecting time, cost, and contract requirements on an IsDB-funded irrigation scheme serving 103,000+ hectares.
• Reported delay and cost exposure objectively, then followed corrective measures through implementation rather than stopping at analysis.

Yapı Merkezi Construction & Industry Inc. · Kombolcha, Ethiopia

Awash – Kombolcha – Hara Gebeya Railway — 392 km electrified railway · US$1.7 billion turnkey contract

• Led planning and reporting on a US$1.7bn, 392 km railway megaproject: Primavera P6 schedules, resource plans, and Tilos time–distance programmes.
• Ran disciplined daily earned value analysis across all fronts, exposing productivity losses early and enabling timely corrective action.
• Developed in-house .NET reporting software, cutting reporting time by 80%.
• Integrated advanced scheduling tools into planning processes, raising schedule reliability and forecast accuracy.

Salini Impregilo S.p.A. (now Webuild) · Siirt, Türkiye

Çetin Hydroelectric Power Plant — 145 m rock-fill dam, 517 MW scheme · €260 million civil works contract

• Prepared project schedules and resource plans in Primavera P6, including hydro-mechanical works packages.
• Managed resource planning to keep critical works on programme; produced daily, weekly, and monthly progress reports.

Temelsu International Engineering Services Inc. · Termez, Uzbekistan

Tashkent – Termez M39 Road — World Bank funded

• Advised the client on time and budget performance of a World Bank-funded road reconstruction project.
• Performed delay analysis to protect the completion date; implemented cost-saving measures reducing project expenses.

Özdemir Construction Inc. · Sakarya, Türkiye

Adapazarı – Mekece Dual Carriageway Road

• Managed the project management office: planning, progress control, and management reporting.

Enez Construction Trade Co. Inc. · Atyrau, Kazakhstan

Road construction project

buldun.app/dev/sitecortex/sitecortex.html

• End-to-end platform that turns daily site data into live cost and schedule decisions: quantity tracking, procurement, warehouse, subcontractor management, planning with live Gantt, and AI-assisted reporting.
• Deployed in production on the €1.2bn Meseș Tunnel & Highway project (Makyol–Özaltın JV, Romania).

Sinan 35B · Mizan 34B · buldun.app/dev

• Developing domain-specific models that turn specifications and quantities into WBS, activity logic, resource plans, and probabilistic duration estimates for better planning decisions.
• Built a traceable local data pipeline from 40,000+ multilingual sources, with source, hash, and confidence controls designed for repeatable use and data sovereignty.