Project Manager/Business Consultant/Product Manager/Senior Developer/IT Architect
Aktualisiert am 08.11.2025
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 04.01.2026
Verfügbar zu: 100%
davon vor Ort: 20%
Fullstack
Managementberatung
Energieversorger
Database Design
TypeScript
Requirements Engineering
Swift
Google Cloud
Generative AI
CI/CD
Flutter
React Native
Mobile Apps
Campaign Tracking
Python
Google Workplace
Product Management
Linux Administration
Due-Diligence-Prüfung
Data Analyst
AI/RAG-Engineer
Prozessberatung
Deutsch
Muttersprache
Englisch
Verhandlungssicher

Einsatzorte

Einsatzorte

Berlin (+200km)
Deutschland, Schweiz, Österreich


möglich

Projekte

Projekte

2 Jahre 10 Monate
2022-08 - 2025-05

Projekt Lead - B2C Platform

Project Lead Typescript, C C++ ...
Project Lead

As the Project Lead and Product Owner, I spearheaded the development of a full-service B2C platform for energy-efficient building renovations, starting from the ground up. The mission was to create a comprehensive digital ecosystem that guides homeowners through the entire process of retrofitting their properties with technologies like heat pumps, photovoltaics, batteries, and insulation.

My core responsibility was to define the product vision and strategy, transforming the initial concept into a fully operational business with a robust IT stack. I led the entire product lifecycle, from market analysis and defining user personas to creating the product roadmap and managing the backlog. This involved orchestrating the development of a seamless customer journey that covered lead generation via the website and partner channels, sophisticated tracking and analytics, and a fully integrated sales process within a CRM system.

I managed cross-functional teams, including development, sales, and energy consultancy, to ensure the platform supported every operational step: from the initial energy consultation and offer creation to coordinating implementation with local craft businesses, invoicing, and ongoing customer care. By championing an agile methodology, I fostered a collaborative environment that enabled us to build and scale a fully integrated product and development team, successfully taking the platform from a concept to a key player in the green energy sector.

Zoho CRM Zapier Webflow Slack Notion Amplitude Google Cloud Google BigTable Google Analytics Google Cloud Run Google CI/CD Github Figma Google Workplace Google Tag Manager Looker Studio Personio Heyflow Sipgate Twilio Sendgrid Airtable Funnel.io Sentry MS Power BI
Typescript, C C++ Python Javascript Swift Dart Product Management Infrastructure Design Agile Development KPI Definition and Implementation Data Analytics Process Design Process Analytics
München and Remote
3 Monate
2024-07 - 2024-09

Lead Engineer - Embedded Health Device

Lead Engineer C++ Python
Lead Engineer

As Lead Engineer, I am directing the complete development of a standalone blood glucose monitoring device, from initial concept to a market-ready product. This embedded systems project involves a holistic approach, integrating hardware and software design to create a custom, user-centric medical device.

My leadership responsibilities cover the entire product design lifecycle.[][] This includes the initial conceptualization and the detailed hardware design, where I am responsible for component selection (ESP32, audio, LCD) and the physical product housing. A key part of this role is the ground-up design of a custom PCB to meet the specific form factor and functional requirements of the device.

On the software front, I am architecting and developing the device's firmware. This includes implementing core functionalities such as robust connectivity for external API access, MQTT messaging for IoT integration, and sophisticated event scheduling. The software is built on a multi-threaded architecture to ensure responsive performance of its widget-based user interface. I am also managing the complete deployment and testing pipeline.

ESP32 PlatformIO MQTT
C++ Python
Open Source
7 Monate
2021-12 - 2022-06

Project Lead - Mobile Health Application

Project Lead Flutter Dart iOS ...
Project Lead
As the Project Lead, I led the end-to-end delivery of a comprehensive mobile application designed to empower individuals with diabetes. My primary responsibility was to ensure the project's successful completion on time and within scope, aligning the development process with the client's strategic goals and user needs.

I was the central point of contact for all stakeholders, translating business requirements into a clear project roadmap and a detailed product backlog. My role involved overseeing the entire project lifecycle, from initial concept and scope definition to final deployment and iteration. This included managing the development of key features such as a sophisticated food and meal database for carbohydrate tracking, a QR/barcode scanner for easy data entry, and the critical functionality for managing and calculating bolus insulin values.

A significant focus was placed on the user journey, where I coordinated closely with the UX/UI design and development teams to deliver a seamless and intuitive user onboarding experience. By managing the project within an agile framework, I facilitated sprint planning, tracked progress, and ensured a collaborative environment. I was responsible for guiding the team working with Flutter and Firebase to deliver a high-quality, scalable, and user-centric final product.

Firebase OpenFoodFacts AWS
Flutter Dart iOS Android
Berlin
2 Monate
2022-04 - 2022-05

Lead Engineer - Web-Platform Medical Drugs

Lead Engineer Typescript
Lead Engineer

As the Lead Engineer on this project, I spearheaded the end-to-end development of a sophisticated medical database and an accompanying full-stack web application. The core purpose of the platform is to provide healthcare professionals with a reliable tool to check for adverse drug-to-drug interactions.

My responsibilities encompassed the entire project lifecycle, from initial client consultations to final deployment. I was the primary point of contact for the client, leading the requirements engineering process to elicit, analyze, and translate their complex needs into detailed technical specifications.

Key technical achievements include the design and implementation of a custom database schema, architected to handle intricate pharmacological data and querying. I led the development of both the intuitive front-end interface and the robust back-end, ensuring seamless data flow and a highly responsive user experience. The entire project was executed using an agile development methodology, allowing for iterative feedback and flexible adaptation to evolving requirements, ensuring the final product was precisely aligned with client expectations.

React Heroku React-Admin
Typescript
Berlin
1 Jahr 2 Monate
2021-03 - 2022-04

Product Owner and Lead Engineer: Mobile Invoice and Allowance App

Product Owner and Lead Engineer Dart Flutter iOS ...
Product Owner and Lead Engineer

In this dual capacity, I led the strategy, development, and technical execution of a comprehensive SaaS platform for invoice, receipt, and travel allowance management. The platform was designed from the ground up to serve both individual (B2C) and corporate (B2B) clients, delivered across a web-based frontend and native Android and iOS applications.

As the , I was responsible for the complete product lifecycle, defining the vision and strategic roadmap. I translated business requirements from stakeholders into a prioritized product backlog, ensuring development efforts were aligned with market needs. A key focus was designing distinct feature sets for both B2C and B2B user segments and driving user acquisition and retention by deeply integrating the platform with our online marketing, analytics, and tracking funnels.

As the , I guided an international, multi-disciplinary technical team, fostering a high-performance engineering culture. I architected the entire full-stack solution, making key decisions on the technology stack, which included Elasticsearch, TypeScript, Couchbase, Java, Flutter, Dart and Swift. I was hands-on in overseeing the design of a scalable, microservices-based backend and ensuring its resilient deployment using containerization technologies like Docker Swarm and Kubernetes. My leadership ensured the delivery of a robust, secure, and feature-rich platform across all digital touchpoints.

Firebase Flutter AWS Docker Couchbase Elastic Search
Dart Flutter iOS Android TDD fastlane
Berlin
2 Jahre 1 Monat
2019-10 - 2021-10

Lead Developer SaaS Platform

Projektleiter, Architektur-Design, Entwicklung, Betrieb TypeScript MongoDB iOS ...
Projektleiter, Architektur-Design, Entwicklung, Betrieb

SaaS Platform für mobile Reisekostenabrechnung. Verantwortlich für den gesamten Softwarelifecycle, inkl. R&D, Entwurf, Entwicklung, Teamführung und Betrieb. Design auf Basis von Microservices unter Nutzung von AWS und GCP.

Couchbase
TypeScript MongoDB iOS Android Python TensorFlow docker ReactJS
Berlin
5 Monate
2017-04 - 2017-08

Lead Project-Management-Office: Corporate Carve-Out of a Major Division

Lead Project-Management-Office Prozesskostenrechnung Benchmark Carve-Out ...
Lead Project-Management-Office

As the head of the Project Management Office, I was entrusted with the strategic oversight and operational governance of a highly complex corporate carve-out within the European utilities sector. This large-scale transformation involved separating the power generation division into a standalone entity, a project with a total volume exceeding 3-digit million and involving the coordination double digit dedicated project members.

My primary responsibility was to establish and lead the central PMO, creating the essential framework for project governance, risk management, and reporting across all workstreams. I drove the successful execution of the project by ensuring alignment on timelines, budgets, and strategic objectives among all participating departments.

A critical aspect of my role was senior stakeholder management. I acted as the key interface between the project team and executive leadership, the board, and other crucial stakeholders, ensuring transparent communication and managing expectations throughout the intricate separation process. Furthermore, I was directly responsible for the sensitive coordination and negotiations with the workers' council, ensuring all transitional activities were compliant with labor agreements and fostering a collaborative approach during this significant organizational change. My leadership in the PMO was instrumental in navigating the complexities of this carve-out and ensuring its successful execution.

Prozesskostenrechnung Benchmark Carve-Out Requirements Engineering
Deutschland

Aus- und Weiterbildung

Aus- und Weiterbildung

5 Jahre
1996-10 - 2001-09

Wirtschaftsinformatik

Promotion, Universität Münster
Promotion
Universität Münster

- Datenmodellierung

- Prozessmodellierung

- Retail-Informationssysteme


6 Jahre
1990-10 - 1996-09

Wirtschaftsinformatik

Dipl.-Wirt.-Inform., Universität Münster
Dipl.-Wirt.-Inform.
Universität Münster

- Wirtschaftsinformatik

- Mathematik

- Informatik

- Betriebswirtschaftslehre

- Volkswirtschaftslehre

Position

Position

Einsatzbereich von Softwareentwicklung über Produktentwicklung digitaler Produkte bis Geschäftsführung IT. Erfahren als Manager, Teamleiter und externer Berater.

Kompetenzen

Kompetenzen

Top-Skills

Fullstack Managementberatung Energieversorger Database Design TypeScript Requirements Engineering Swift Google Cloud Generative AI CI/CD Flutter React Native Mobile Apps Campaign Tracking Python Google Workplace Product Management Linux Administration Due-Diligence-Prüfung Data Analyst AI/RAG-Engineer Prozessberatung

Schwerpunkte

Softwareentwicklung
Experte
Projekt-/Programmmanagement
Experte
Projektleitung
Experte
Teamführung
Experte
IT-Architekturdesign
Experte
Datenmodellierung
Experte
Datenanalyse, Data-Mining
Fortgeschritten
SaaS-Platformen
Experte
DevOps
Fortgeschritten
Produktmanagement
Fortgeschritten

Programmiersprachen

Typescript
Experte
Swift
Experte
Javascript
Experte
Dart
Experte
Java
Fortgeschritten
C
Fortgeschritten
C++
Fortgeschritten
Python
Fortgeschritten

Datenbanken

Couchbase
Experte
MongoDB
Experte
PostgresSQL
Fortgeschritten
InfluxDB
Fortgeschritten

Zahlungsverkehr & Transaktionen

Billing-Systeme
Fortgeschritten

Managementerfahrung in Unternehmen

Interimsmanagement
Experte
IT-Management
Experte
Prozessmanagement
Experte
Produktentwickung
Experte

Branchen

Branchen

- Energieversorgung

- Retail

- Gebäudesanierung

- Telekommunikation

- Mobility

- Health


Einsatzorte

Einsatzorte

Berlin (+200km)
Deutschland, Schweiz, Österreich


möglich

Projekte

Projekte

2 Jahre 10 Monate
2022-08 - 2025-05

Projekt Lead - B2C Platform

Project Lead Typescript, C C++ ...
Project Lead

As the Project Lead and Product Owner, I spearheaded the development of a full-service B2C platform for energy-efficient building renovations, starting from the ground up. The mission was to create a comprehensive digital ecosystem that guides homeowners through the entire process of retrofitting their properties with technologies like heat pumps, photovoltaics, batteries, and insulation.

My core responsibility was to define the product vision and strategy, transforming the initial concept into a fully operational business with a robust IT stack. I led the entire product lifecycle, from market analysis and defining user personas to creating the product roadmap and managing the backlog. This involved orchestrating the development of a seamless customer journey that covered lead generation via the website and partner channels, sophisticated tracking and analytics, and a fully integrated sales process within a CRM system.

I managed cross-functional teams, including development, sales, and energy consultancy, to ensure the platform supported every operational step: from the initial energy consultation and offer creation to coordinating implementation with local craft businesses, invoicing, and ongoing customer care. By championing an agile methodology, I fostered a collaborative environment that enabled us to build and scale a fully integrated product and development team, successfully taking the platform from a concept to a key player in the green energy sector.

Zoho CRM Zapier Webflow Slack Notion Amplitude Google Cloud Google BigTable Google Analytics Google Cloud Run Google CI/CD Github Figma Google Workplace Google Tag Manager Looker Studio Personio Heyflow Sipgate Twilio Sendgrid Airtable Funnel.io Sentry MS Power BI
Typescript, C C++ Python Javascript Swift Dart Product Management Infrastructure Design Agile Development KPI Definition and Implementation Data Analytics Process Design Process Analytics
München and Remote
3 Monate
2024-07 - 2024-09

Lead Engineer - Embedded Health Device

Lead Engineer C++ Python
Lead Engineer

As Lead Engineer, I am directing the complete development of a standalone blood glucose monitoring device, from initial concept to a market-ready product. This embedded systems project involves a holistic approach, integrating hardware and software design to create a custom, user-centric medical device.

My leadership responsibilities cover the entire product design lifecycle.[][] This includes the initial conceptualization and the detailed hardware design, where I am responsible for component selection (ESP32, audio, LCD) and the physical product housing. A key part of this role is the ground-up design of a custom PCB to meet the specific form factor and functional requirements of the device.

On the software front, I am architecting and developing the device's firmware. This includes implementing core functionalities such as robust connectivity for external API access, MQTT messaging for IoT integration, and sophisticated event scheduling. The software is built on a multi-threaded architecture to ensure responsive performance of its widget-based user interface. I am also managing the complete deployment and testing pipeline.

ESP32 PlatformIO MQTT
C++ Python
Open Source
7 Monate
2021-12 - 2022-06

Project Lead - Mobile Health Application

Project Lead Flutter Dart iOS ...
Project Lead
As the Project Lead, I led the end-to-end delivery of a comprehensive mobile application designed to empower individuals with diabetes. My primary responsibility was to ensure the project's successful completion on time and within scope, aligning the development process with the client's strategic goals and user needs.

I was the central point of contact for all stakeholders, translating business requirements into a clear project roadmap and a detailed product backlog. My role involved overseeing the entire project lifecycle, from initial concept and scope definition to final deployment and iteration. This included managing the development of key features such as a sophisticated food and meal database for carbohydrate tracking, a QR/barcode scanner for easy data entry, and the critical functionality for managing and calculating bolus insulin values.

A significant focus was placed on the user journey, where I coordinated closely with the UX/UI design and development teams to deliver a seamless and intuitive user onboarding experience. By managing the project within an agile framework, I facilitated sprint planning, tracked progress, and ensured a collaborative environment. I was responsible for guiding the team working with Flutter and Firebase to deliver a high-quality, scalable, and user-centric final product.

Firebase OpenFoodFacts AWS
Flutter Dart iOS Android
Berlin
2 Monate
2022-04 - 2022-05

Lead Engineer - Web-Platform Medical Drugs

Lead Engineer Typescript
Lead Engineer

As the Lead Engineer on this project, I spearheaded the end-to-end development of a sophisticated medical database and an accompanying full-stack web application. The core purpose of the platform is to provide healthcare professionals with a reliable tool to check for adverse drug-to-drug interactions.

My responsibilities encompassed the entire project lifecycle, from initial client consultations to final deployment. I was the primary point of contact for the client, leading the requirements engineering process to elicit, analyze, and translate their complex needs into detailed technical specifications.

Key technical achievements include the design and implementation of a custom database schema, architected to handle intricate pharmacological data and querying. I led the development of both the intuitive front-end interface and the robust back-end, ensuring seamless data flow and a highly responsive user experience. The entire project was executed using an agile development methodology, allowing for iterative feedback and flexible adaptation to evolving requirements, ensuring the final product was precisely aligned with client expectations.

React Heroku React-Admin
Typescript
Berlin
1 Jahr 2 Monate
2021-03 - 2022-04

Product Owner and Lead Engineer: Mobile Invoice and Allowance App

Product Owner and Lead Engineer Dart Flutter iOS ...
Product Owner and Lead Engineer

In this dual capacity, I led the strategy, development, and technical execution of a comprehensive SaaS platform for invoice, receipt, and travel allowance management. The platform was designed from the ground up to serve both individual (B2C) and corporate (B2B) clients, delivered across a web-based frontend and native Android and iOS applications.

As the , I was responsible for the complete product lifecycle, defining the vision and strategic roadmap. I translated business requirements from stakeholders into a prioritized product backlog, ensuring development efforts were aligned with market needs. A key focus was designing distinct feature sets for both B2C and B2B user segments and driving user acquisition and retention by deeply integrating the platform with our online marketing, analytics, and tracking funnels.

As the , I guided an international, multi-disciplinary technical team, fostering a high-performance engineering culture. I architected the entire full-stack solution, making key decisions on the technology stack, which included Elasticsearch, TypeScript, Couchbase, Java, Flutter, Dart and Swift. I was hands-on in overseeing the design of a scalable, microservices-based backend and ensuring its resilient deployment using containerization technologies like Docker Swarm and Kubernetes. My leadership ensured the delivery of a robust, secure, and feature-rich platform across all digital touchpoints.

Firebase Flutter AWS Docker Couchbase Elastic Search
Dart Flutter iOS Android TDD fastlane
Berlin
2 Jahre 1 Monat
2019-10 - 2021-10

Lead Developer SaaS Platform

Projektleiter, Architektur-Design, Entwicklung, Betrieb TypeScript MongoDB iOS ...
Projektleiter, Architektur-Design, Entwicklung, Betrieb

SaaS Platform für mobile Reisekostenabrechnung. Verantwortlich für den gesamten Softwarelifecycle, inkl. R&D, Entwurf, Entwicklung, Teamführung und Betrieb. Design auf Basis von Microservices unter Nutzung von AWS und GCP.

Couchbase
TypeScript MongoDB iOS Android Python TensorFlow docker ReactJS
Berlin
5 Monate
2017-04 - 2017-08

Lead Project-Management-Office: Corporate Carve-Out of a Major Division

Lead Project-Management-Office Prozesskostenrechnung Benchmark Carve-Out ...
Lead Project-Management-Office

As the head of the Project Management Office, I was entrusted with the strategic oversight and operational governance of a highly complex corporate carve-out within the European utilities sector. This large-scale transformation involved separating the power generation division into a standalone entity, a project with a total volume exceeding 3-digit million and involving the coordination double digit dedicated project members.

My primary responsibility was to establish and lead the central PMO, creating the essential framework for project governance, risk management, and reporting across all workstreams. I drove the successful execution of the project by ensuring alignment on timelines, budgets, and strategic objectives among all participating departments.

A critical aspect of my role was senior stakeholder management. I acted as the key interface between the project team and executive leadership, the board, and other crucial stakeholders, ensuring transparent communication and managing expectations throughout the intricate separation process. Furthermore, I was directly responsible for the sensitive coordination and negotiations with the workers' council, ensuring all transitional activities were compliant with labor agreements and fostering a collaborative approach during this significant organizational change. My leadership in the PMO was instrumental in navigating the complexities of this carve-out and ensuring its successful execution.

Prozesskostenrechnung Benchmark Carve-Out Requirements Engineering
Deutschland

Aus- und Weiterbildung

Aus- und Weiterbildung

5 Jahre
1996-10 - 2001-09

Wirtschaftsinformatik

Promotion, Universität Münster
Promotion
Universität Münster

- Datenmodellierung

- Prozessmodellierung

- Retail-Informationssysteme


6 Jahre
1990-10 - 1996-09

Wirtschaftsinformatik

Dipl.-Wirt.-Inform., Universität Münster
Dipl.-Wirt.-Inform.
Universität Münster

- Wirtschaftsinformatik

- Mathematik

- Informatik

- Betriebswirtschaftslehre

- Volkswirtschaftslehre

Position

Position

Einsatzbereich von Softwareentwicklung über Produktentwicklung digitaler Produkte bis Geschäftsführung IT. Erfahren als Manager, Teamleiter und externer Berater.

Kompetenzen

Kompetenzen

Top-Skills

Fullstack Managementberatung Energieversorger Database Design TypeScript Requirements Engineering Swift Google Cloud Generative AI CI/CD Flutter React Native Mobile Apps Campaign Tracking Python Google Workplace Product Management Linux Administration Due-Diligence-Prüfung Data Analyst AI/RAG-Engineer Prozessberatung

Schwerpunkte

Softwareentwicklung
Experte
Projekt-/Programmmanagement
Experte
Projektleitung
Experte
Teamführung
Experte
IT-Architekturdesign
Experte
Datenmodellierung
Experte
Datenanalyse, Data-Mining
Fortgeschritten
SaaS-Platformen
Experte
DevOps
Fortgeschritten
Produktmanagement
Fortgeschritten

Programmiersprachen

Typescript
Experte
Swift
Experte
Javascript
Experte
Dart
Experte
Java
Fortgeschritten
C
Fortgeschritten
C++
Fortgeschritten
Python
Fortgeschritten

Datenbanken

Couchbase
Experte
MongoDB
Experte
PostgresSQL
Fortgeschritten
InfluxDB
Fortgeschritten

Zahlungsverkehr & Transaktionen

Billing-Systeme
Fortgeschritten

Managementerfahrung in Unternehmen

Interimsmanagement
Experte
IT-Management
Experte
Prozessmanagement
Experte
Produktentwickung
Experte

Branchen

Branchen

- Energieversorgung

- Retail

- Gebäudesanierung

- Telekommunikation

- Mobility

- Health


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Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

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