Hi, I'm Phillipp
I turn complex ideas into scalable digital solutions. As a fullstack developer and AWS architect, I build products that create real value—from mobile apps to cloud infrastructure.
AWS Certifications
Validated expertise in cloud architecture and AI technologies
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.
Software Lead Developer @DLR
PresentLead Software Engineer for a safety-critical, auditable software system in aviation (Hawkeye project). Technical leadership with full ownership over architecture, code quality, and long-term maintainability.
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 & Co-Founder @AeroSys AG
As CTO and co-founder of AeroSys, I co-founded this pioneering startup and led the development of the world's first digital co-pilot for aircraft. I shaped the company's technology vision, built the development team, and made critical technical decisions.
Software Engineer @slashwhy
Software Engineer in several projects for different sectors.
CTO & Co-Founder @KickOn
As CTO and co-founder of KickOn, I co-founded this startup and built a comprehensive SaaS platform for the hospitality industry from the ground up. I led the technical vision, architecture, and development team, creating a full-stack solution that automated processes and improved customer engagement.
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
From concept to deployment—I help companies build reliable, scalable digital products that users love.
- 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 build innovative mobile apps that look great, run smoothly, and scale effortlessly. With Flutter, I create cross-platform apps that feel native on iOS and Android. Need a fully native solution? I've got Swift and Kotlin covered.
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
I build rock-solid backends that are fast, scalable, and ready for real-world traffic. Using AWS, I design cloud-native architectures that are powerful, efficient, secure, and cost-effective.
From scalable APIs to event-driven microservices, I use Golang and Node.js to create maintainable systems that grow with your product. Whether it's serverless with AWS Lambda or containerized solutions, your infrastructure is built for speed, security, and scale.
Web Apps
I build fast, scalable, and modern web applications with Next.js and React—combining speed, SEO optimization, and smooth user experiences. From dynamic web apps to landing pages, I create solutions that are both functional and future-proof.
With a focus on clean code and performance, I ensure your website is beautiful, fast, and easy to maintain. Need backend integration? I seamlessly connect your frontend 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. As a former CTO & fullstack engineer, I help companies make smart tech decisions, optimize architectures, and scale effectively.
Whether you're planning a new app, improving existing systems, or facing scalability challenges, I bring hands-on expertise in mobile development, backend systems, and cloud infrastructure to guide you to the best solutions.
AI - GenAI, LLMs, and more
I use AI to solve problems and create value. I've built scalable solutions with GenAI, LLMs, and RAG that enhance productivity and user experiences.
From RAG systems with vector databases to AI-powered chatbots, I help companies leverage the latest AI technologies. My expertise includes AWS Bedrock, OpenAI's GPT models, and custom AI solutions that integrate seamlessly with existing systems.
Portfolio
A selection of projects I've worked on—from SaaS platforms to mobile apps and AI solutions.
Development of several internal mobile apps for digitizing production, time tracking, and material management. Includes native Android RFID plugin for employee identification via USB.
Key Highlights:
- •Several production apps: Time tracking, Attendance, Material management
- •Native Android RFID plugin for USB card readers
- •Offline-capable material management app
- •Industrial-grade UX for production environment
Lead Software Engineer for a safety-critical, auditable software system in aviation. Technical leadership with full ownership over architecture, code quality, and long-term maintainability.
Key Highlights:
- •Safety-critical aviation system (audit-ready)
- •Native iPad app (Swift) for flight information
- •Scalable backend with Node.js & PostgreSQL
- •Technical leadership & system ownership
- •Quality management & audit preparation
Development of a cloud-based platform for analyzing financial data using harmonic patterns. Built with scalable architecture and real-time data processing.
Key Highlights:
- •Cloud-native architecture with AWS
- •Real-time data processing
- •Scalable backend with Go
- •Modern React frontend
Native mobile apps for controlling smart home devices via Bluetooth Mesh. iOS app built with Swift and Android app with Kotlin, providing seamless device integration for the JUNG HOME system.
Key Highlights:
- •Native iOS (Swift) and Android (Kotlin) apps
- •Bluetooth Mesh integration
- •Real-time device control
- •Firebase backend integration
As CTO and co-founder of AeroSys, I led the development of the world's first AI-powered digital co-pilot for aircraft. Built a safety-critical system that reduces pilot workload and increases flight safety.
Key Highlights:
- •Co-founded startup as CTO
- •AI-powered decision support system
- •Real-time flight data processing
- •Safety-critical aviation system
As CTO and co-founder of KickOn, I built a comprehensive SaaS platform for the hospitality industry from the ground up. Led the technical vision, architecture, and development of the full-stack solution.
Key Highlights:
- •Co-founded startup as CTO
- •End-to-end SaaS platform from scratch
- •Process automation for hospitality
- •Multi-tenant architecture
Native iOS and Android app for building automation company to control switches, outlets, and devices via Bluetooth Mesh.
Key Highlights:
- •Native iOS & Android apps
- •Bluetooth Mesh protocol
- •Secure device communication
- •Intuitive user interface
Mobile app for early detection of strokes and heart attacks with intuitive navigation, emergency call functionality, and web integration.
Key Highlights:
- •Health-critical application
- •Emergency call integration
- •Intuitive user interface
- •Cross-platform solution
How I Work
From initial idea to successful launch—here's how we'll work together to bring your vision to life.
1. Initial Contact
30-60 minGet in touch via LinkedIn, Calendly, or the chat. We discuss your project, goals, and requirements in a free consultation call.
2. Discovery & Planning
1-3 daysI analyze your needs, create a technical concept, and develop a detailed project plan with timeline and milestones.
3. Proposal & Agreement
1-2 daysYou receive a clear proposal with scope, timeline, and pricing. Once agreed, we kick off the project.
4. Development
Project-specificI build your solution using agile methods with regular updates, code reviews, and feedback loops. You stay in the loop at all times.
5. Launch & Support
OngoingAfter thorough testing, we deploy your solution. I provide documentation and optional ongoing support.
My Working Principles
Regular updates, clear timelines, and honest feedback throughout the project.
Fast iterations with continuous feedback to ensure we build exactly what you need.
Clean code, solid architecture, and thorough testing—built to last and scale.
I adapt to your workflow—whether you need a team member, consultant, or solo developer.
Trusted by Industry Leaders
“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 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.
How to Get Started
Choose Your Contact Method
Reach out via LinkedIn, book a meeting, or start a chat. All options lead to the same place - a conversation about your project.
Free Consultation Call
We discuss your project, goals, and requirements. I'll ask questions to understand your needs and share initial thoughts.
Receive a Proposal
Within 1-3 days, you'll get a detailed proposal with scope, timeline, and pricing. No surprises - everything is transparent.
Let's Build Together
Once you approve, we kick off the project. I'll keep you updated throughout the development process.
