16.07.2026 aktualisiert

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Projektmanger | Senior Mobile Architect | Product Owner | Startup CTO & Mentor

Bamberg, Deutschland
Deutschland +11
info: Deutschland, Österreich, Schweiz, USA, Spanien, Italien, Frankreich, Kanada, Mexico, Polen, Portugal, Tschechische Republik
Siemenst Professionel Education - Associate Engineer IT
Bamberg, Deutschland
Deutschland +11
info: Deutschland, Österreich, Schweiz, USA, Spanien, Italien, Frankreich, Kanada, Mexico, Polen, Portugal, Tschechische Republik
Siemenst Professionel Education - Associate Engineer IT

Profilanlagen

Professional Scrum Master I.pdf
Professional Scrum Product Owner II.pdf
Lebenslauf Maximilian Berktold-DE.docx
Resume Maximilian Berktold EN.docx

Über mich

Experte in: 6+ Jahre Flutter (Day 1), Mobile Architektur, Team-Lead & Product Owner in diversen Projekten. Track Record: 10.000+ Studenten, Fintech Banking & Investment/Trading Apps für Union Investment & Visualvest. Ich schließe die Lücke zwischen Business-Vision und technischer Exzellenz.

Skills

Product OwnerFlutterClean CodeAnwendungsarchitekturC#C++Certified Business ManagerContinuous DeliveryContinuous IntegrationCertified Scrum Product OwnerProjektplanungFührungskompetenzSoftware ArchitectureProduct OwnershipNext.jsKonzeptionelles DenkenCertified Quality ManagerCertified Scrum MasterSwift (Programmiersprache)GitKotlinCoaching und MentoringFull Stack EntwicklungDartFintechRestful Apis
I build businesses. My career is a mix of high-growth startups, hard-learned failures, and leading architecture for Germany's biggest FinTechs.

The Track Record:
- Entrepreneur: Founder of PepStack (Biohacking OS), Blastin (Event Ticket Reselling), Forge (Training), BloodBuddy (Smart Bloodwork Tracking for Everyone), and previously Smaboo (Small Business Booking Platform). I know the ups and downs of the founder journey firsthand.
- Flutter Authority: Built the largest German Flutter course on Udemy with 10,000+ students. I've been using Flutter since day one.
- Architect for Enterprise: I support major German banks and financial institutions in mastering complex software architecture, security, and compliance. In my many Years in Fintech it automatically happened that I always slide into the lead as I take full Responsibility for the Success of the Project.

How I Help:
I’m a Growth-Focused Freelancer. I bridge the gap between "Out of the box" startup thinking and "Rock-solid" enterprise quality.
Whether you need a Software Architect to save a failing project or a CTO-level partner to scale your MVP:
I focus on execution and mastering the latest tech AI-driven workflows. My Skills are far beyond Development - I bring Ideas and not only Refactor Code but also Lead Your Business to Success.

If you need someone who understands both the code and the P&L — let’s talk.

Sprachen

DeutschMutterspracheEnglischverhandlungssicher

Projekthistorie

Senior Consultant - Software Architect - Lead App Team

VisualVest, Union Investment

Banken und Finanzdienstleistungen

>10.000 Mitarbeiter

  1. Consulting on the further development of the sales platform for banks within the cooperative financial group using modern technologies.
  2. Consulting on architectural topics, including the derivation and implementation of architectural measures within an agile team.
  3. Conceptualization and implementation of technically demanding requirements according to the target architecture.
  4. Creation of code conventions and ensuring software quality.
  5. Consulting on architectural styles, design patterns, microservices, and relevant technologies (e.g., Jakarta EE, Quarkus, Angular, Flutter).

Udemy Business Instructor - Biggest & Bestselling German App Dev Courses

Udemy

Internet und Informationstechnologie

< 10 Mitarbeiter

  1. Developed and delivered a bestselling, comprehensive Flutter course in German (40+ hours), now also available in English. With OVER 10.000 Developers taught.
  2. Managed the largest active German Flutter community, fostering engagement and supporting developers.

Founder - FullStack Development

PepStack, Forge, BloodBuddy

Pharma und Medizintechnik

< 10 Mitarbeiter

Fullstack Platform Development, From Frontend to Backend to AI Pipelines!
For athletes who treat their body like a system: measurable, optimizable, accountable.

PepStack — Peptides, hormones, TRT, longevity. Cycle tracking, PK-based serum-level simulation, predictive inventory. B2C app + B2B platform for shops, coaches and partners on the same data infrastructure.
https://pepstack.net/

Forge — Workout tracker for serious lifters. Progression logic that actually thinks ahead instead of just logging sets.
https://www.stay-forged.app/de

BloodBuddy — Bloodwork tracking done right. History, trends, OCR-ingested lab reports — built for people who get blood drawn more than once a year.
https://www.bloodbuddy.app/de

Everything Built with a modern Rock solid Tech Stack. From Frontend to Backend to Automated AI Pipeline Infrastructure.

Founder & CTO – Event Platform

BLASTin GMBH - Startup, Bamberg, Deutschland

Medien und Verlage

10-50 Mitarbeiter

  1. Developing a highly scalable platform for the party and events industry.
  2. Driving innovation and growth, exploring new solutions with unlimited scalability potential.
Partnered with Eventim for the European rollout.

Flutter Expert – Product Owner, Scrum Master & Software Architect

OpenSphere Software

Internet und Informationstechnologie

< 10 Mitarbeiter

  1. Actively develop mobile apps with Flutter, delivering high-quality, secure, and scalable solutions.
  2. Provide team trainings and individual coaching for professional mobile development.
  3. Support projects end-to-end, from concept creation to product maturity, with international partners.

Senior Consultant - Lead Developer - Team App

VisualVest, UnionInvestment

Banken und Finanzdienstleistungen

250-500 Mitarbeiter

Developed a multi-client white-label mobile trading app.
Integrated new modules into existing white-labeled investment applications.
Collaborated in a dynamic team within a large-scale banking platform.

Senior Consultant - Mobile Development Flutter

Union Investment

Banken und Finanzdienstleistungen

>10.000 Mitarbeiter

  1. Developed VisualVest’s multi-tenant white-labeled Robo-Adviser platform and UnionDepotOnline app.
  2. Specialized in investment apps for financial institutions, leading the mobile team to success.

CTO & Partner – Cross-Industry Booking Platform

Smaboo GmbH - Startup, Düsseldorf, Deutschland

Internet und Informationstechnologie

50-250 Mitarbeiter

  1. Led technical conception and platform architecture.
  2. Oversaw app development with Flutter and operational management.
  3. Managed a diverse, international technical team.

Live Trainer & Speaker - Mobile Development with Flutter

GFU Cyrus AG

Sonstiges

500-1000 Mitarbeiter

  1. Delivered in-house, remote, and open training courses on professional Flutter development.
  2. Provided tailored guidance to help participants master Flutter and apply best practices in real projects.
  3. Speaker and Organizer at multiple Google Flutter Events

Expert Consultant Flutter

MVP Match, International

Sonstiges

500-1000 Mitarbeiter

  1. Advised MVP Match and clients on Flutter projects.
  2. Provided software development consulting with a focus on Flutter best practices.
  3. Conducted interviews and assessments for Flutter candidates.

Lead Software Engineer – Industrial Automation with Flutter

Rocket Solution GMBH, Forchheim, Deutschland

Industrie und Maschinenbau

50-250 Mitarbeiter

  1. Lead development of industrial monitoring & control software for automated high-bay warehouses.
  2. Drive concept creation, backlog planning, and end-to-end project management.
  3. Coordinate with internal and external stakeholders to align priorities.
  4. Develop Flutter tablet apps and design/optimize full UX.

Software Engineer – Thermodynamic Simulation

Siemens Energy, Erlangen, Deutschland

Energie, Wasser und Umwelt

>10.000 Mitarbeiter

  1. Maintain and enhance KRAWAL, software for advanced power plant design.
  2. Develop new features and optimize modules for accuracy, efficiency, and usability.
  3. Collaborate with engineering teams to align software with thermodynamic modeling requirements.
  4. Troubleshoot, debug, and ensure reliable, future-proof software performance.

Marketing & Sales - Social Platforms

Sonstiges

10-50 Mitarbeiter

  1. Building and maintaining a large Instagram account with around 70,000 followers. Selling products through the platform
  2. Creating websites to market products through affiliate marketing.
  3. Drop shipping - Importing products from abroad and successfully selling them on Amazon with profit margins.

Zertifikate

Scrum Master

scrum.org

2024

Product Owner

scrum.org

2024

Portfolio

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