Stefan S.

Interim IT Manager / Interim CTO, Senior Project Manager, Business Analyst and Solution Architect

Hamburg, Germany

Experience

May 2025 - Present
5 months
Hybrid

Business Analyst

Large Municipal Utility Provider

Conducting the business analysis for battery storage systems and their marketing (BESS).

Analysis of optimization and marketing processes including all supporting processes. End-to-end view covering sales, technical qualification, implementation, optimization and marketing, billing, and operational cross-functional processes.

Designing and conducting workshops with the involved departments, preparing and reconciling requirements, and confirming and anchoring them. Reviewing different development stages of the underlying business model. Transitioning to the solution design phase and mapping requirements and processes to IT solutions.

Aug 2024 - Apr 2025
9 months

Sabbatical

Sep 2023 - Jul 2024
11 months

Overall IT Project Manager

Uniper

  • Overall management of an implementation project for an IT solution for energy trading and delivery.
  • An off-the-shelf product was customized to support various company-specific business processes. The system is meant to replace an existing legacy application and support highly critical 24/7 business processes.
  • Joined the ongoing project during a crisis. Developed a long-term strategy and realigned the project. Planned, controlled, and monitored project tasks.
  • Optimized the project organization with over 20 members and refocused the project on achieving the agreed goals. Used classic project management combined with agile methods (backlog, dailies, etc.).
  • Project planning and control, as well as introduction of dependency and risk management. Defined and agreed on measurable project goals between customer and vendor. Continuously monitored project progress and reported to the steering committee and top-level management.
  • Stakeholder management and vendor control: coordinating and communicating in a demanding and challenging stakeholder and vendor environment. Improved communication structures. Increased transparency and measurability of results.
Apr 2023 - Aug 2023
5 months

IT Project Manager

Deutsche Giganetz

  • Led an IT project as part of a strategic company initiative for fiber optic expansion and commercialization.
  • Requirements management: gathering functional requirements from sales, commercial, and technical construction areas. Conducted requirements workshops with the business units.
  • Developed an IT strategy and coordinated the creation of a solution design, taking functional requirements into account.
  • Aligned with stakeholders, business units, and IT departments.
  • Project planning and control; project reporting to the Project Office.
Jul 2022 - Feb 2025
2 years 8 months

Agile Coach

  • Support in implementing agile ways of working and agile transformation; especially regarding the agile product and the role of the Product Owner:
  • Stakeholder mapping and stakeholder communication
  • Backlog creation and management
  • Conducting team vision & strategy workshops
  • Realignment of product portfolio
  • Methods and tools for roadmap management
  • Application of design thinking methods
  • Working with agile metrics (velocity, burndown)
  • Use of agile development practices (e.g., pair programming, continuous integration/delivery)
  • Continuous improvement process (CIP) and feedback process (demos, reviews, retrospectives)
Nov 2019 - Jun 2022
2 years 8 months

Team Coordinator Trading Logistics IT (Interim Management), Agile Coach

Vattenfall Energy Trading

  • Leading an interdisciplinary, distributed and international IT team - responsible for various business-critical energy trading and market access applications (e.g. exchanges, capacity platforms and grid operators) for commercial trading and physical delivery, balancing power, intraday and term trading.
  • Ensuring operational support of highly critical 24/7 applications and their further development. Coordinating projects to transform and renew the existing software and IT landscape in Trading Logistics IT and ETRM.
  • Developing strategies and concepts to consolidate and modernize IT and system landscapes. Planning and executing cloud migration projects (on-premise to Microsoft Azure). Adapting existing applications for cloud operation. Introducing automated release and deployment processes (CI/CD).
  • Coordinating the creation of security and access concepts and conducting and evaluating security audits and penetration tests.
  • Stakeholder and requirement management.
  • Supporting resource and budget management.
  • Promoting a collaborative team culture, conflict management, self-organization and team development. Coaching and mentoring in agile methods (Scrum/Kanban).
  • Developing a target vision and strategy to renew the existing IT landscape in Trading Logistics IT and ETRM.
  • Migrating several enterprise applications to the Azure Cloud.
  • Evolving the team from mainly operational tasks towards software development.
  • Introducing agile work methods and Scrum.
  • Increasing self-organization/self-management.
May 2019 - Nov 2019
7 months

Sabbatical

  • Roadtrip through Europe
May 2018 - May 2019
1 year 1 month

Team Coordinator and Operational Management (Interim Management)

Vattenfall Energy Trading

  • Leading an IT team with 5 members.
  • Ensuring operational support for industry-specific, mission-critical 24/7 applications.
  • Knowledge management and skill building (e.g. shared use of tools like Confluence, internal training). Applying agile and DevOps development practices (e.g. pair programming and reviews, continuous integration/delivery).
  • Coordinating ongoing application development to meet new market, compliance, regulatory and other business requirements.
  • Requirement management; acting as interface between business units and development team; prioritizing tasks in coordination with stakeholders.
  • Budget and resource management.
May 2011 - May 2018
7 years 1 month

Business Analyst, Solution Architect and IT Project Manager in various projects

Vattenfall Energy Trading

  • For several mission-critical projects in the areas of:
  • Implementation of third-party application systems, including scheduling and nomination in the power sector (Market Access)
  • Enhancement of in-house application software
  • IT infrastructure and data center projects
  • Carve-in and carve-out projects
  • Capturing and modeling existing processes and identifying optimization potential. Conducting interviews and workshops with business units and new units to be integrated (carve-in).
  • Preparing and documenting requirements. Translating business requirements into technical specifications. Evaluating different solution architectures. Conducting cost-benefit analyses considering regulatory and business requirements. Preparing decision proposals and coordinating decision-making processes.
  • Planning, managing and controlling projects using traditional project management methods. Stakeholder management at various levels (business units, external vendors, management). Risk and dependency management, reporting and project governance.
  • Coordinating test management and quality assurance (e.g. acceptance and go-live processes).
  • Successfully implementing a mission-critical energy trading system in a challenging stakeholder and vendor environment.
  • On-time integration of a business unit into the existing IT application landscape, including functional extension of applications for the new processes.
  • Establishing processes, communication structures and documentation for collaboration among internal customers, application support and data center for a virtualization solution
Jan 2010 - Dec 2011
2 years

IT Subproject Manager / Consultant

Raffinerie Heide GmbH

  • Supporting the company transition and separating the corporate IT from the previous owner’s group context (carve-out).
  • Identifying and documenting relevant business processes and affected applications. Developing and implementing strategies to decouple processes and applications.
  • Defining tasks and work packages for process and system owners to separate processes and applications from the old organization.
  • Planning, managing and controlling the implementation. Coordinating and reporting to the program manager and steering committees.
Jan 2009 - Dec 2010
2 years

IT Project Manager

Yxlon International

  • Setting up and stabilizing a new software development team (carve-in).
  • Ensuring knowledge transfer and documentation in a short time because most of the old team left the company at short notice. At the same time, building a new team at the new site and developing knowledge and skills.
  • Coordinating the further development of the application using Scrum.
  • Introducing agile development methods and Scrum, coaching and mentoring in agile methods. Integrating and managing an external vendor as an extended workbench.
  • Gathering business requirements and epic management. Translating business requirements into technical specifications and test cases.
  • Creating documentation and overseeing the process for accepting new software versions and handing over to operations.
  • Rolling out and training for the new software version across the company for all markets (Europe, USA, Asia).
  • Setting up and stabilizing the development team at the new site.
  • Ensuring knowledge transfer for operations and further development of the systems.
  • Developing a new software version of the system application within 6 months in parallel with building the structures, with market-relevant new features and under challenging conditions. Increasing the competitiveness of the product and the company through the new software features.
Jan 2007 - Dec 2009
3 years

Software Architect

Shell

  • Designing a software architecture for the redevelopment of a globally used enterprise application.
  • Defining guidelines and development patterns for object-oriented development in C#/.NET.
  • Taking into account SOX and IT compliance requirements. Developing a security framework and user authentication, including a user concept.
  • Leading a team of 20 developers.
  • Providing documentation and conducting training for users and support. Preparing materials and guiding the transition-to-support process (handover from development to operations).
Jan 2005 - Dec 2006
2 years

Software Architect and Team Lead

Speech Design Carrier Systems GmbH

  • Analyzing existing technologies.
  • Evaluating different architecture approaches (e.g., agent-based architecture and SOA).
  • Designing the application architecture.
  • Implementing the main SOA components (e.g., enterprise service bus based on MS MessageQueue; event dispatcher for load-, resource-, and task-based distribution; high availability and system monitoring services; TCP-based communication between distributed components; defining interfaces for services, among others).
  • Supervising architecture and design and coaching developers, conducting software reviews.
  • Analyzing weaknesses of the existing software system regarding new requirements and creating an architecture concept for a freely scalable and highly available telecommunications application.
  • Quickly building a development team for the new application, coaching and successfully introducing new development methods (object-oriented programming), programming language (C#/.NET) and technologies (Microsoft .NET 1.1 technology stack).

Summary

I see IT transformation as a holistic approach that covers general aspects like processes, methods, technologies, and architectures. These are complemented by company- and business-specific topics. It is the combination of solid business understanding, extensive technical knowledge, and experience in team development and leadership that I use to successfully deliver IT projects.

My background is many years of deep experience as a software developer and software architect in various, technically demanding, and highly business-critical projects. In recent years, I have worked as a Business Analyst, Solution Architect, Project Manager, Agile Coach, and Interim Manager in numerous IT transformation projects for leading European companies in the energy, telecommunications, and industrial sectors.

Languages

German
Native
English
Advanced

Certifications & licenses

Certified Project Manager according to IPMA Level C

IPMA

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