Hi, I'm Phillipp
I believe great software isn't just about code—it's about impact. Technology should solve problems, drive innovation, and create real value.
About Me.
Over the past years, I’ve worked as a Software Engineer and CTO, building everything from sleek mobile apps to scalable cloud architectures.
I'm passionate about technology and always eager to learn and explore new ideas. Thanks to my broad technical knowledge and hands-on experience across mobile, web, and cloud, I’m able to build solutions that are both robust and future-proof.
I believe great collaboration is key: I enjoy working as part of a team, communicating clearly, and staying organized and proactive throughout every project phase.
Technically, I specialize in:
- 🚀 Mobile Apps - Flutter, Swift, Kotlin
- 🔗 Backend - Golang, Node.js, scalable APIs (REST, GraphQL, gRPC)
- ☁️ Cloud - AWS (Lambda, API Gateway, RDS & more)
- 💻 Web - Next.js, React
For me, great software isn’t just about clean code and performance — it’s about delivering sustainable solutions that continue to create value over time.
Freelancer @self-employed
PresentAs a freelancer, I am starting on a new chapter in my life, driven by the desire to utilize my experience to help others.
CTO & Supervisory Board member @aerosys
As the CTO of a pioneering startup developing the world's first digital co-pilot, I oversee the development team, foster a thriving team culture, shape the company's technology vision and make critical tech decisions.
Software Engineer @slashwhy
Software Engineer in several projects for different sectors.
CTO & Co-Founder @KickOn
As the CTO of a startup developing a hospitality platform, I oversee the development team, foster a thriving team culture, shape the company's technology vision and make critical tech decisions.
Head of Mobile App Development @LMIS AG
As Head of Mobile App Development, I lead and inspire a team, oversee team building efforts, and utilize my expertise as a versatile software developer to successfully deliver projects across various sectors, leveraging a wide range of technologies.
Developer & Software Consultant @LMIS AG
Led mobile app development initiatives, specializing in iOS and Android platforms. Designed and implemented custom solutions while providing technical consulting for various clients. Focused on delivering high-performance, user-friendly applications through close collaboration with product teams.
My Services
I help companies and startups build reliable, scalable, and user-friendly digital products.
- Full-cycle development from idea to launch
- Mobile, Web & Cloud solutions
- Scalable, maintainable architectures
- Integrate smoothly into existing teams
- Speed up project delivery
- Hands-on coding, mentoring, and collaboration
- Technical strategy and architecture
- Codebase reviews and improvements
- Cloud infrastructure design (AWS)
Mobile Apps
I design and develop innovative and user-friendly mobile apps that don't just look great - they run smoothly, scale effortlessly, and provide an outstanding user experience. With Flutter, I create cross-platform apps that feel truly native on both iOS and Android. Need a fully native solution? No problem - I've got Swift and Kotlin in my toolkit, too.
But a great app is more than just code - it needs a solid architecture, seamless backend integration, and a cloud infrastructure that can scale with your users. That's why I bring my fullstack expertise to the table, ensuring your app isn’t just built, but built to last.
Cloud & Backend
A great app needs a rock-solid backend - fast, scalable, and ready to handle real-world traffic. I design and build cloud-native architectures with AWS, ensuring your backend is not just powerful but also efficient, secure, and cost-effective.
From scalable APIs to event-driven microservices, I prefer to use Golang and Node.js to create scalable, maintainable backend systems that grow with your product. Whether it's serverless with AWS Lambda or a containerized solution, I make sure your infrastructure is built for speed, security, and future scalability.
Web Apps
Fast, scalable, and modern - that's how websites should be. I build high-performance web applications with Next.js and React, combining speed, SEO optimization, and a smooth user experience. Whether it's a dynamic web app, a landing page, or a fully interactive platform, I create solutions that are both functional and future-proof.
With a focus on clean code, reusability, and performance optimization, I ensure your website is not just beautiful but also fast and easy to maintain. Need backend integration? No worries - I connect your frontend seamlessly with Golang, Node.js, or AWS-powered APIs.
Tech Consulting - From Idea to Scalable Solution
Sometimes, you don't need more code - you need the right strategy. With years of experience as a CTO & fullstack engineer, I help companies make smart tech decisions, optimize architectures, and scale their products effectively.
Whether youre planning a new app, improving an existing system, or facing scalability challenges, I bring hands-on expertise in mobile development, backend systems, and cloud infrastructure to guide you towards the best solutions.
AI - GenAI, LLMs, and more
I'm passionate about using AI to solve problems and create value. I've worked with GenAI, LLMs, and RAG to build scalable and efficient solutions that enhance productivity and user experiences.
From implementing RAG systems with vector databases to fine-tuning models and building AI-powered chatbots, I help companies leverage the latest AI technologies effectively. My expertise includes working with AWS AI services (e.g.Bedrock), OpenAI's GPT models, and developing custom AI solutions that integrate seamlessly with existing systems.
What People Say
“I highly recommend Phillipp without reservation - for any position that requires technical understanding, responsibility, and genuine passion for good solutions. Anyone who works with him gets not only results but also someone they can rely on at any time.“
Product Owner·Albrect Jung GmbH & Co. KG
“Phillipp is not only technically strong but also an absolute team player and doer who really drives projects forward! An asset to any project! He thinks ahead, takes responsibility, and always goes the extra mile when needed. Thanks to his dedication, we were able to successfully implement highly relevant and complex features, deliver various app releases, and significantly improve the codebase through refactoring.“
CEO & Founder·addSensors GmbH
“As a CEO, I particularly appreciate when things just work. Phillipp delivered exactly that: A clean, reliable Flutter app that enables our customers to try out our sensors directly. In a very short time, he had a working solution that delights our customers - and all of this without me having to worry about technical details.“
Senior Android Developer·Freelancer
“Phillipp thinks and acts like a true team player. He listens, actively supports, and shares his knowledge with great dedication. Through his clear communication and patience, he has sustainably developed our team in areas such as architecture, programming, and project work. Both professionally and personally, he was a role model for all of us. I am very grateful to have been part of his team. Anyone who works with Phillipp gains both a true professional and a valuable colleague.“
“I highly recommend Phillipp without reservation - for any position that requires technical understanding, responsibility, and genuine passion for good solutions. Anyone who works with him gets not only results but also someone they can rely on at any time.“
Product Owner·Albrect Jung GmbH & Co. KG
“Phillipp is not only technically strong but also an absolute team player and doer who really drives projects forward! An asset to any project! He thinks ahead, takes responsibility, and always goes the extra mile when needed. Thanks to his dedication, we were able to successfully implement highly relevant and complex features, deliver various app releases, and significantly improve the codebase through refactoring.“
CEO & Founder·addSensors GmbH
“As a CEO, I particularly appreciate when things just work. Phillipp delivered exactly that: A clean, reliable Flutter app that enables our customers to try out our sensors directly. In a very short time, he had a working solution that delights our customers - and all of this without me having to worry about technical details.“
Senior Android Developer·Freelancer
“Phillipp thinks and acts like a true team player. He listens, actively supports, and shares his knowledge with great dedication. Through his clear communication and patience, he has sustainably developed our team in areas such as architecture, programming, and project work. Both professionally and personally, he was a role model for all of us. I am very grateful to have been part of his team. Anyone who works with Phillipp gains both a true professional and a valuable colleague.“
“I highly recommend Phillipp without reservation - for any position that requires technical understanding, responsibility, and genuine passion for good solutions. Anyone who works with him gets not only results but also someone they can rely on at any time.“
Product Owner·Albrect Jung GmbH & Co. KG
“Phillipp is not only technically strong but also an absolute team player and doer who really drives projects forward! An asset to any project! He thinks ahead, takes responsibility, and always goes the extra mile when needed. Thanks to his dedication, we were able to successfully implement highly relevant and complex features, deliver various app releases, and significantly improve the codebase through refactoring.“
CEO & Founder·addSensors GmbH
“As a CEO, I particularly appreciate when things just work. Phillipp delivered exactly that: A clean, reliable Flutter app that enables our customers to try out our sensors directly. In a very short time, he had a working solution that delights our customers - and all of this without me having to worry about technical details.“
Senior Android Developer·Freelancer
“Phillipp thinks and acts like a true team player. He listens, actively supports, and shares his knowledge with great dedication. Through his clear communication and patience, he has sustainably developed our team in areas such as architecture, programming, and project work. Both professionally and personally, he was a role model for all of us. I am very grateful to have been part of his team. Anyone who works with Phillipp gains both a true professional and a valuable colleague.“
“I highly recommend Phillipp without reservation - for any position that requires technical understanding, responsibility, and genuine passion for good solutions. Anyone who works with him gets not only results but also someone they can rely on at any time.“
Product Owner·Albrect Jung GmbH & Co. KG
“Phillipp is not only technically strong but also an absolute team player and doer who really drives projects forward! An asset to any project! He thinks ahead, takes responsibility, and always goes the extra mile when needed. Thanks to his dedication, we were able to successfully implement highly relevant and complex features, deliver various app releases, and significantly improve the codebase through refactoring.“
CEO & Founder·addSensors GmbH
“As a CEO, I particularly appreciate when things just work. Phillipp delivered exactly that: A clean, reliable Flutter app that enables our customers to try out our sensors directly. In a very short time, he had a working solution that delights our customers - and all of this without me having to worry about technical details.“
Senior Android Developer·Freelancer
“Phillipp thinks and acts like a true team player. He listens, actively supports, and shares his knowledge with great dedication. Through his clear communication and patience, he has sustainably developed our team in areas such as architecture, programming, and project work. Both professionally and personally, he was a role model for all of us. I am very grateful to have been part of his team. Anyone who works with Phillipp gains both a true professional and a valuable colleague.“
Ready to Get Started?
Whether you're launching a startup, scaling a software platform, or need strategic tech consulting - I'm here to help.
I thrive on solving complex challenges and delivering tangible results. Let's work together to turn your vision into reality.
Beyond technology – I bring a mindset focused on collaboration, quality, and long-term value.
