Tajdar Ahmed Siddiqui
Engineer Planning and Cost @ AL-AYUNI Investment and Contracting Company
About
I build the predictive guardrails, data structures, and governance frameworks that keep multi-billion-dollar mega-infrastructure investments running on time and inside budget. Over the past years across India and the Middle East, I have specialized in mastering the complex execution realities of high-speed rail, mass rapid transit networks, and heavy civil infrastructure developments. My expertise bridges the gap between high-level owner/consultant (PMC) investment strategies and ground-level main contractor execution physics. As a globally recognized technical contributor to the project management domain—including serving as an expert reviewer for the upcoming PMI PMBOK® Guide (8th Edition) and an international PMO Awards Evaluator—I don't just follow industry standards; I help audit and write them. My Core Architectural Pillars:Predictive PMO Governance: Building integrated master Project Controls Plans (PCP), structural WBS/CBS frameworks, and Earned Value Management (EVM) data tracks aligned with global auditing benchmarks. Forensic Delay & Claims Defense: Executing Time Impact Analysis (TIA) logs and forensic metrics to protect margins, claim valid Extensions of Time (EOT), and navigate complex contract variations. Multidisciplinary Interface Synthesis: Synchronizing critical path dependencies across civil construction, ERTMS/ETCS signalling environments, CBTC, rolling stock, and utility networks. Whether engineering executive Power BI dashboards for C-suite decision-making or managing complex structural overpass portfolios, my goal is absolute baseline integrity. Global Professional Footprint:Certifications: PMP® | PSP® | CCP® | PMI-SP® | PMI-RMP® | PMO-CP® Affiliations: Chartered Engineer (C.Eng (India)) | Saudi Council of Engineers (SCE) | APM UK | AACE International Let’s connect to optimize project predictability, or reach out directly at tajdar99@gmail.com.
Saudi Arabia
Riyadh
Construction
Linear Planning and Scheduling, Linear Programming, Linear Planning, Linear Modelling, Adaptability & Resilience, Communicating for Impact, Relationships & Well-being, Data Modeling, Spreadsheets, Tableau, ERTMS Basics, Resource Planning, Performance Motivation, Delay Analysis, P6, Communications Management, PMI-RMP, Project Risk Identification, Risk Analysis, Risk Assessment
Experience

Engineer Planning and Cost
Saudi Arabia
Directing end-to-end project controls, master scheduling baselines, and predictive macro cost engineering ecosystems for mega-scale railway networks and Royal Commission industrial infrastructure portfolios. Serving as a strategic technical interface between ground execution teams and C-suite leadership. Key Outcomes & Functions: Governance Architecture: Authored and deployed customized corporate Project Controls Plans (PCP) defining baseline WBS/CBS frameworks, scheduling workflows, and executive validation rules. EVM Data Modeling: Engineered integrated Earned Value Management (EVM) data tracks to isolate cost/schedule variances early, creating predictive mitigation protocols to protect project margins. Claims Defense: Analyzed complex disruptions via forensic delay metrics and Time Impact Analysis (TIA) to successfully build, defend, and secure critical Extension of Time (EOT) submittals. Commercial Protection: Directed the validation of complex contractor payment streams and provided expert analytical support during variation order assessments and final commercial negotiations. Interface Synchronization: Managed critical path dependencies between heavy civil structures, railway signaling networks (ERTMS/ETCS), telecommunications, and government municipal permits. Executive Business Intelligence: Built interactive automated performance dashboards via Power BI, providing senior executives with real-time forecast-to-complete metrics and project risk indicators. Flagship Portfolios Commanded: Signalling & Telecommunications Works (STW-230): Mainline transit network expansion for Saudi Arabia Railway (SAR). Camel Crossing Bridges Portfolio: Structural safety bridges over active SAR rail tracks (Hail & Al Jouf Corridors). Royal Commission for Jubail and Yanbu (RCJY) Infrastructure: Comprising Dareen Beach Phase II, City Centre (Markaz Al-Idari) Site Development, and Downstream Site Development plots.

Assistant Project Engineer (Planning & Project Management)
New Delhi
Commanded PMC-side project planning, independent baseline verification, and progress validation controls for high-volume public transit and railway structural overpass infrastructure works. Key Outcomes & Functions: Baseline Integrity Assessment: Evaluated and verified main contractors' baseline target schedules using Critical Path Method (CPM) analytics to preserve national milestone delivery windows. Progress Validation Audits: Conducted rigorous independent project progress audits, mitigating schedule constraints and preventing delivery drift. Constraint Resolution Coordination: Spearheaded technical liaison loops with engineering and field execution squads to systematically clear site bottlenecks and generate optimized look-ahead matrices. Flagship Portfolios Commanded: Railway Road Over Bridge (ROB) Ventures: Multi-site heavy structural overpass networks managed across regional logistics lines. Top Skills Associated with this Role: Project Planning Schedule Control Critical Path Method (CPM) Risk Identification Stakeholder Coordination

Senior Engineer (Planning and Estimation)
Archvista Design Consultatns
Jaipur
Executed fundamental project controls, structural scheduling, and pre-operational cost estimation workflows for a diverse portfolio of heavy civil engineering, metro rail systems, and urban infrastructure developments. Key Outcomes & Functions: Pre-Ops Value Engineering: Developed tender-stage master schedules, resource-loaded baseline paths, complex Bills of Quantities (BOQ), and cost estimates based on technical engineering drawings. Site-to-Office Data Integration: Standardized monthly and weekly look-ahead metrics, establishing field-data aggregation loops that improved reporting precision. Project Footprint: Contributed to the Jaipur Metro Rail Project (underground/elevated transit) and formulated master tender float control documentation for 11 Indian Railway Station redevelopments. Top Skills Associated with this Role: Cost Estimation Bill of Quantities (BOQ) Value Engineering Linear Scheduling Metro & Transit Infrastructure

Project Engineer (Planning & Project Management)
Simplex Infrastructure L.L.C.
Muscat

Senior Engineer (Planning & Estimation)
Archvista Design Consultants
Jaipur, Rajasthan, India
Tajdar Ahmed Siddiqui's Contact Information
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