Cigdem Ersoy
London,United Kingdom
Summary
Gas market professional with hands-on experience on a European gas trading desk, combining P&L analysis, physical flows, and market fundamentals. Proven track record of identifying value across storage, transport, and trading activities, with direct exposure to deal execution and pricing. Experienced in data-driven market analysis and Python-based time-series workflows, with a growing focus on energy market analysis and fundamentals.
Overview
11
11
years of professional experience
Work history
Deal Management Specialist (Gas Trading Analyst)
Shell
London, United Kingdom
2022.05 - Current
- Delivered daily P&L analysis across a multi-market European gas portfolio (>10 TWh), identifying key drivers of forecast-to-actual variances and supporting trader positioning.
- Supported trading desk activities on the Spanish aggregator book, contributing to pricing, deal execution (~40 GWh), and generating €150k+ MtM P&L during trader cover periods.
- Identified and monetised transport capacity opportunities (69 GWh), generating €90k+ incremental value.
- Managed FX exposure (~$500m) for USD-denominated contracts, supporting hedging activities and minimising residual risk.
- Monitored physical gas flows, storage positions, and transport capacity across European markets, ensuring alignment between operational data and market exposure.
- Conducted fundamentals analysis on European gas markets, assessing implications for regional flows, infrastructure, and system balance.
- Built Python-based workflows to analyse gas market data, including cross-border flows and supply–demand components, supporting data-driven fundamentals analysis.
Corporate Reporting Analyst
Shell
Istanbul, Turkey
2019.09 - 2022.05
- Produced group and statutory financial reports, providing accurate insights to support business planning and decision-making.
- Coordinated internal and external audits, ensuring compliance and mitigating financial risk.
- Contributed to finance transformation projects, improving reporting processes and internal controls.
- Supported credit management activities, including management of customer and supplier guarantees.
Retail Operations Specialist
Shell
Istanbul, Turkey
2016.08 - 2019.09
- Managed operational and financial performance across a large retail network (1,000+ sites), supporting commercial delivery and service standards.
- Supported credit risk processes and financial decision-making for retail partners.
- Led process improvement and digital initiatives, enhancing operational efficiency.
Researcher, ALICE Experiment
CERN
Geneva, Switzerland
2015.01 - 2015.04
- Conducted statistical analysis and modelling on high-energy collision data as part of the ALICE experiment.
- Collaborated with international research teams, contributing to data-driven scientific insights.
Education
M.Sc. - Energy Technologies & Management
Sabanci University
IstanbulM.Sc. - Physics Engineering
Istanbul Technical University
Istanbul B.Sc. - Physics
Yildiz Technical University
IstanbulSkills
Energy Markets & Fundamentals
- Supply–demand analysis
- Storage & transport dynamics
- Cross-border flow analysis
- Scenario analysis
Data Analysis & Trading
- Python (pandas, time-series analysis)
- Data analysis, validation & visualisation
- Trading desk support & deal execution
- P&L analysis & attribution
Projects
Gas Market Analysis Project – Turkey Supply/Demand Stack
- Built a supply-demand framework for the Turkish gas market, incorporating storage levels, demand components, and cross-border flows.
- Performed historical time-series analysis and vendor comparisons to assess data consistency and identify key market trends.
- Developed Python-based workflows (pandas) to clean, structure, and analyse time-series datasets, improving efficiency and reproducibility.
- Generated insights on market behaviour and flow dynamics to support understanding of regional gas balance.
Additional Market Analysis Projects
- Conducted scenario analysis on European gas supply following the potential expiry of the Russia–Ukraine transit agreement (2025 onwards), evaluating alternative routes including TurkStream, LNG imports, and the Vertical Gas Corridor, and assessing implications for regional supply balance and flows.
- Analysed transport options for Neptun Deep gas field into neighbouring markets, assessing cost and capacity across cross-border routes and implications for CEE flow dynamics.
Timeline
Deal Management Specialist (Gas Trading Analyst)
Shell
2022.05 - Current
Corporate Reporting Analyst
Shell
2019.09 - 2022.05
Retail Operations Specialist
Shell
2016.08 - 2019.09
Researcher, ALICE Experiment
CERN
2015.01 - 2015.04
M.Sc. - Energy Technologies & Management
Sabanci University
M.Sc. - Physics Engineering
Istanbul Technical University
B.Sc. - Physics
Yildiz Technical University