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Mary S.MS

Mary S.

Strategy and PMO Lead | ex-McKinsey (MBB) EM | ACA

€1,157/day
London, GB
8-15 years

Average response time: 1 hour

About Mary

Independent strategy advisor with a background in strategy consulting at McKinsey and financial audit at PwC London.

I specialise in corporate strategy, business transformation, and process optimisation, helping companies improve operational efficiency and drive strategic growth.

Experienced in working with tech, telecom, and consumer brands, my expertise includes customer value management (B2B and B2C), financial analysis, process enhancement, cost transformation, and complex PMO leadership.

I have 8+ years of managerial experience, managing teams of up to 10 direct reports per project.

I also acted as Squad Lead on several transformation projects with cross-functional oversight of various teams across Finance, Data and IT, Marketing and Customer Services.

I hold an MBA from the University of Oxford and am an ICAEW Chartered Accountant (ACA).

Available for part-time freelance projects (2–3 days per week).
  • Russian

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
London (up to 50km)

Experience

  • McKinsey & Company
    Engagement Manager
    CONSULTING AND AUDITS
    October 2022 - May 2025 (2 years and 7 months)
    London, UK
    • Delivered UK strategy approach for a global tech company through design of sector and product plays to generate ~£200m revenue, outlining required changes to the offering, sales and delivery capabilities
    • Led Customer Value Management (CVM) transformation initiative for a large European Telco on agile project as the cross-functional Squad lead, overseeing financial business cases and deliverables for executive leadership (COO / CFO), securing alignment on key decisions such as product launches and process changes, with €5m+ profit impact potential
    • Conducted diagnostics for an emerging business need of a European consumer brand and issued a set of prioritised recommendations to achieve cost savings of £1 m+
    • Oversaw PMO for a large-scale cost transformation project for a global Healthcare client, coordinating 10 process workstreams and managing both client and internal stakeholders, over a 6-month period
    PMO growth strategy sales acceleration Process facilitation Project owner
  • PricewaterhouseCoopers LLP
    Audit Manager / Strategic Partnerships Manager
    CONSULTING AND AUDITS
    October 2019 - September 2021 (1 year and 11 months)
    London, UK
    • Led large scale FTSE100 Group audits across Media, eCommerce, Telecom and Pharma sectors, managing teams of 10+ auditors directly and coordinating 25 global PwC teams
    • Directed and delivered executive-level presentations for FTSE100 clients, including Audit Committee and CFO briefings on KPI progress and proposals. Achieved consistent 4.5/5+ client satisfaction rating
    • Collaborated on design and launch of new audit specialist training to 4000+ staff with stakeholders across various functions (Risk and Quality, Learning Design, Communications, senior leadership)
    • Oversaw and developed budgets for up to 3000 staff hours per project, ranging £50k-£10m in fees. Successfully negotiated overruns up to £90k by leveraging strong client relationships
    SOX Audit chartered accountant IFRS stakeholder management
  • ING Bank
    Financial Operations Manager
    CONSULTING AND AUDITS
    January 2019 - August 2019 (8 months)
    London, UK
    • Created information packs and presentations on control testing performance and prioritised recommendations for UK CEO, CFO and other executive-level stakeholders at leadership forums
    • Enhanced operational staff efficiency by ~100 hours/quarter by proactively identifying and implementing improvements to internal process documentation
    • Created regulatory deliverables for critical internal alignment and approval by ING's executive leadership
    • Directed business control assessment and change implementation through cultivating and managing stakeholder relationships, including Finance, Legal, IT and Operations Risk Management teams
    SOX internal controls process optimisation stakeholder management PMO

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Education

  • MBA
    University of Oxford
    2022
    MBA
  • ICAEW Chartered Accountant (ACA)
    Institute of Chartered Accountants of England and Wales
    2016
    Chartered Accountant

Skill set

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