Sebastian Gahl

Strategy & Product Leader | Telco/Tech | Transformation | Digital Growth & GTM | eSIM (SimWallet) | M&A / Corp Dev | ex-Odido/T-Mobile NL · Deutsche Telekom

Amsterdam Area

About

Commercially minded strategy, product & transformation leader (10+ yrs, telco/tech). I turn strategy into execution: led product launches, M&A deals (buy- and sell-side, PMI) and enterprise transformations; often alongside senior leadership and delivering measurable value for customers and shareholders.

Experience

  • Odido Nederland (On-site)
    • Lead SimWallet
      Oct 2024 - Jun 2025 · 9 mos

      - Delivered fully digital eSIM MVP in <3 months with end-to-end product ownership and budget responsibility - Achieved a strong early adaption/growth post-launch; defined funnel, KPIs and analytics to track adoption - Built and led a cross-functional squad (UX, app dev, marketing) and set the roadmap/backlog from concept to scale - Established post-launch operations (sales, care, finance/reporting) to drive immediate commercial impact - Reported to the CCO; acted as single-threaded owner aligning product, tech and go-to-market

    • Senior Strategy and M&A Manager
      Jun 2021 - Jun 2025 · 4 yrs 1 mo

      - Programme lead for corporate Digital & IT transformation; designed a two-year consolidation roadmap delivering double-digit M€ gross capex savings and faster time-to-market - M&A workstream lead during the company’s €5.1B sale to Private Equity; owned strategy, business plan, IM & VDD, coordinating internal teams, DT, banks and advisors - Built strategic partnerships: launched an eSIM/roaming partnership with 1Global; negotiated a technology partnership with Netcracker including commercials and joint roadmap - Strategy lead in the rebrand to Odido: launched a customer-centric corporate strategy and refreshed B2C positioning enabling the T-Mobile & Tele2 brand merger - Drove cross-functional growth and Corp Dev and M&A priorities; trusted advisor to the management team and mentor to juniors

    • Manager Marketing Automation (ad interim)
      Apr 2024 - Sep 2024 · 6 mos

      - Led 14 FTE for six months; product owner for marketing data products and personalised journeys across the MarTech stack. - Implemented a new operating model that lifted team engagement and increased delivery velocity. - Coordinated AI initiatives across Marketing with clear governance/guardrails and safe adoption practices. - Partnered with sales, digital and data teams to improve targeting, measurement and campaign effectiveness.

  • Senior Governance Bodies Manager at T-Mobile Nederland
    Jul 2019 - May 2021 · 1 yr 11 mos

    Responsible for the management of all processes around T-Mobile’s key top management meetings such as Executive Committee, Advisory Board, Supervisory Board; close collaboration with all CXOs and their respective management teams

  • Business Controller at Deutsche Telekom
    May 2016 - Jun 2019 · 3 yrs 2 mos

    Dedicated Business Partner Finance & Controlling for the DT Individual Solutions & Products GmbH; responsible for strategic and financial planning, performance reviews as well as day-to-day business controlling activities (financial analysis, budget steering, business cases)

  • Project Associate at Corporate Steering at T-Systems International
    Sep 2013 - Apr 2016 · 2 yrs 8 mos

    Part of T-System’s in-house consultancy team; core team member of company-wide, multi-year transformation program; responsible for leading for sub-workstreams (loss-making contract analyses, cross-segment portfolio review, restructuring delivery units)

  • Working Student at Bioventure Consulting GmbH
    Apr 2011 - Aug 2013 · 2 yrs 5 mos