Molly Leslie
@mollyleslie
Commercial Operations leader turning energy data into margin gains through analytics, dashboards, and stakeholder-driven execution.
United KingdomWhat I'm looking for
I’m a Commercial Operations leader with a strong aptitude for data analysis and optimisation, built through an energy industry career focused on measurable outcomes. In my current role as Head of Commercial Operations, I’m leading a newly created team to build commercial data analysis capability across multiple markets and fuels.
I partner with IT to transform the data landscape for commercial analysis—building data warehouses, dashboards, and models to improve interpretation and accuracy. I develop analytical frameworks for complex, multi-variable commercial systems, quickly gaining domain knowledge of new markets and systems while strengthening quantitative problem-solving.
I’ve delivered meaningful commercial impact, including generating over £500k in margin, and identifying financial, process, and knowledge gaps across departments. I also act as a Subject Matter Expert (SME) for a major company-wide project, accountable for ensuring the outcome of the functionality for my area.
Previously, as Interim Head of Commercial Operations, I led a 6-person team using volumetric analysis to report, manage, evaluate, and optimise financial performance, resolving areas of gross margin leakage. Earlier, as a Commercial Finance Analyst, I built billing models to optimise spreads, advanced SQL through hands-on work, and strengthened cross-functional execution through clear documentation, SharePoint centralisation, and stakeholder-focused reporting.
Experience
Work history, roles, and key accomplishments
Head of Commercial Ops
SEFE Energy UK
May 2025 - Present (1 year 1 month)
Led a newly created commercial operations team to build data analysis capability across multiple markets and fuels, partnering with IT to build data warehouses, dashboards, and models. Generated over £500k in margin and served as an SME for a major company-wide project, improving interpretation and accuracy of complex commercial analysis.
Interim Head of Commercial Ops
SEFE Energy UK
Apr 2024 - Apr 2025 (1 year)
Led a 6-person team to report, manage, evaluate, and optimise financial performance through volumetric analysis to identify and resolve gross margin leakage. Built and maintained analytical models, performed ad hoc analysis for other departments, and acted as an SME and interim business owner for a major company-wide project.
Commercial Finance Analyst
SEFE Energy UK
Sep 2022 - Mar 2024 (1 year 6 months)
Analyzed gaps between customer billing and industry charges to correct erroneous charges and prevent gross margin leakage. Built and implemented a new billing model, maintained stakeholder reporting, and transitioned the team to a central SharePoint hub to streamline access to key documents.
Teaching Intern
St Bede’s Catholic School
Jun 2021 - Jul 2021 (1 month)
Prepared lesson plans and delivered lessons, while observing and supporting teachers during classroom instruction. Participated in staff meetings and developed understanding of pedagogy through day-to-day learning in a school environment.
Maths Tutor (KS2)
Private Client
Sep 2018 - May 2019 (8 months)
Planned a learning schedule aligned to the pupil’s curriculum and provided homework support with targeted extra exercises. Improved times tables performance, and adapted teaching methods when the pupil struggled with specific topics.
Education
Degrees, certifications, and relevant coursework
Newcastle University
BSc (Hons), Mathematics
2019 - 2022
Grade: 1st Class
Activities and societies: Sept 2021–May 2022: Intramural Netball Team Manager/Coach/Captain, Newcastle University Maths Society.
Completed a 1st Class BSc (Hons) in Mathematics. Developed strong quantitative skills through undergraduate study.
Woodhouse Grove School
A Levels and GCSEs, Mathematics, Physics, Further Mathematics
2012 - 2019
Activities and societies: Sept 2018–June 2019: Head of House. 2017–2019: Planned the secondary school prom and Sixth Form ‘Valentine’s Ball’ (sourced venues/suppliers, budgeted, delivered events).
Completed A Levels and GCSEs at Woodhouse Grove School. A Levels: Maths (A*), Physics (A), Further Maths (B); GCSEs included multiple A* grades.
Availability
Location
United KingdomAuthorized to work in
Job categories
Skills
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