Top 1% Expert-Vetted on Upwork. 15+ years building new systems from the ground up, fixing broken ones, scaling infrastructure, and shipping critical software for companies like T-Mobile, Andreessen Horowitz, and Carnival Corporation. I don’t do fluff, I don’t over-engineer, and I don’t sit on calls all day. I design and build clean, reliable software—and I solve the hard problems when things go off the rails. I stay hands-on, move fast, and write code that lasts.

I'm a professional mobile developer with experience over 9 years and a Master's Degree in Computer Science. I can help you with: o Taking your idea and make it a reality o Coding to your design specifications o Adding new features to an existing application o Trouble-shooting existing applications Fast, reliable, and high quality!

I'm a freelancer since 2017, specialised in e-commerce development and based in Berlin. I have completed many projects from small tasks to complex development, as solo developer or in a team. I find detailed solutions for your requirements. Even if you have litte or no technical knowledge I will advice you until all issues are clarified. I have vast experience in Magento, Shopware 5/6 and also WooCommerce/WordPress. I also develop apps, know VueJs, React and Knockout and generally JavaScript. The best way to know if we are a good fit is to just write me. Lets have a non-committal chat about your project, can be text, phone or video. Greetings Robert

I help startups and growing businesses build scalable software products and AI-powered solutions that solve real business problems. As a CTO and AI engineering leader, I lead cross-functional teams building production-grade AI agents, intelligent automation, and modern SaaS platforms. I combine product strategy with hands-on engineering to deliver software that is reliable, scalable, and built for growth. I'm passionate about AI-assisted software development, using tools like Claude Code and LLMs to accelerate delivery while ensuring strong engineering practices, code quality, security, and compliance. Expertise AI Agents & Agentic Workflows Claude Code & LLM Integrations AI Automation & Intelligent Systems Software Architecture & Technical Leadership Cloud, Serverless & DevOps Mobile & Web Application Development I've delivered products across FinTech, HRTech, EdTech, eCommerce, Fitness, Entertainment, and Enterprise SaaS. My goal is simple: help businesses move faster by combining great engineering with the power of AI. Feel free to reach out if you're building AI products, modernising your platform, or looking for experienced technical leadership.

With 15+ years of hands-on experience, I build and manage high-performing websites that deliver real, measurable results. My work is defined by responsiveness, reliability, and a genuine commitment to client success—qualities that consistently set me apart from typical developers and agencies. I focus on creating modern, intuitive digital experiences that not only look great but also perform seamlessly. What I Bring to the Table ✨ Design & Branding UI/UX-focused web design Brand identity & logo creation Custom graphic design ⚙️ Development Expertise WordPress, Shopify, Magento PHP (CodeIgniter, Laravel), React, Node.js Webflow, JavaScript/jQuery Drupal, MySQL, AWS 🚀 Digital Growth & Support SEO optimization AI Optimization Hosting, servers, and email support Ongoing maintenance & technical support

Creative Developer & UX/UI Designer | Web, Mobile & SaaS Products I help ambitious startups and B2B companies turn complex ideas into beautiful, high-performing digital experiences. With over 10 years of experience blending design thinking with development, I build interfaces that don’t just look great they drive engagement, retention, and measurable business results. ⸻ What I Do • UX/UI Design for Web & Mobile Apps - Clean, modern, and conversion-focused design systems in Figma • Product & SaaS Dashboards – Simplifying complex data into intuitive user flows • E-commerce & Landing Pages – WordPress and Shopify experiences built to convert • Front-End Development – Pixel-perfect builds optimized for speed, SEO, and responsiveness ⸻ My Approach I design with purpose every color, layout, and motion serves a clear goal: clarity, usability, and ROI. By combining research-driven UX with developer-ready precision, I bridge the gap between strategy, design, and execution saving teams time and ensuring flawless handoff. ⸻ Industries & Clients Fintech • SaaS • Education • Real Estate • E-commerce • Beauty & Lifestyle • Food & Travel • Legal I’ve collaborated with global brands (including Amazon, under NDA) and dozens of startups across the U.S., Europe, and MENA regions. ⸻ Tools I Use Figma (Preferred) • Webflow • WordPress • Photoshop • Illustrator • Xmind ⸻ If you’re looking for someone who can translate vision into a functional, scalable, and user-loved product, let’s connect — I’ll help you make design your competitive advantage.

Full-Stack Web, Mobile & AI Developer I specialize in building complete web, mobile, and SaaS applications, from technical design to production deployment. With strong expertise in frontend, backend, mobile, cloud, and artificial intelligence, I deliver robust, scalable solutions tailored to your needs. Technical Skills Frontend Development Expertise in React for building high-performance websites, SaaS interfaces, and desktop/web applications. Mobile Development Native Android and iOS development, with a strong focus on user experience. Backend Development Development of APIs, backend services, and server-side architectures using JavaScript. Artificial Intelligence & Machine Learning Experience with AI, TensorFlow, and automatic recognition models. Cloud Infrastructure & Servers Configuration, deployment, and management of Google Cloud infrastructures, as well as Debian / Ubuntu servers. Databases Experience with SQL, Firebase, and local or cloud-based databases depending on project needs. Projects Kibo (kiboanime.app) A mobile Android application dedicated to anime fans. ScoreFlow (scoreflow.app) A complete AI-powered SaaS solution for intelligent sheet music digitization. Streamown (streamown.tv) A SaaS streaming platform allowing streamers to keep up to 95% of their revenue. What I Can Bring to Your Project I turn your ideas into robust, modern, and scalable technical solutions. My approach combines technical expertise, business understanding, product development experience, and a constant focus on quality. Whether you need a mobile application, a SaaS platform, a backend API, cloud infrastructure, or a solution integrating artificial intelligence, I can support you from the initial concept to production launch.

I'm a mobile developer with 8 years of experience. I'm specialized in cross platform development for iOS and Android platform. I use Flutter and Claude Code to create the most efficient app in record time. I own 4 mobile apps which are currently in production (App Store & Google Play) I worked for the biggest #1 e-commerce app in France for 3 years (4M active users monthly) Please feel free to contact me if you need help to build apps

I have over 17 years of experience in software development, with a strong focus on iOS applications. Since 2010, I have honed my skills as an iOS software engineer, contributing to various projects including mobile banking solutions, VPN services, and SaaS applications. My journey includes managing an open-source marketplace utilizing cryptocurrency, showcasing my ability to innovate and adapt to emerging technologies. I was also a pioneer in developing one of the first GPS friend-locating apps in the App Store. My diverse experience equips me with a unique perspective on mobile development and a robust problem-solving approach. If you're seeking an iOS developer who delivers high-quality, user-friendly applications and can drive projects from concept to completion, let’s connect and discuss how I can bring your ideas to life.

I specialize in developing mobile applications using FlutterFlow, ensuring seamless deployment to both the iOS App Store and Google Play. With a successful track record of launching applications like ArcaneStat, which includes monetization through subscriptions and ads, I bring a unique blend of technical expertise and business acumen. My five years of experience includes two years as a data engineer at a leading fintech company, where I honed my skills in data processing and analysis. I thrive on turning innovative ideas into functional applications while maintaining clear communication with clients. If you need an experienced developer who understands both the technical landscape and the business context, let’s discuss how I can help elevate your project to the next level.