Hello, I'm Yusufhan
As a Software Engineer with expertise in full-stack development and cybersecurity, I architect and build scalable applications from the ground up. Specializing in modern web technologies, mobile apps, and system design, I deliver enterprise-grade solutions that drive business growth.
Worked with leading companies:
25+
Projects Delivered
15+
Happy Clients
12+
5-Star Reviews
3+
Years Experience
About Me
Yusufhan Sacak, a Software Engineer with expertise in Flutter development, brings a unique blend of technical skill and creative vision to web and mobile applications. With a solid foundation in cybersecurity from Istanbul Bilgi University and computer engineering from Bahçeşehir University, I approach every project with both security and user experience in mind.
As a natural leader who headed the Bi'Siber Cyber Security Club, I'm known for my collaborative approach and ability to communicate complex technical concepts clearly. My passion for elegant UI/UX design informs every application I build, ensuring they're not just functional but delightful to use.
Technical Skills
- Flutter & Dart
- JavaScript & TypeScript
- React & Next.js
- C++, Java, Python
- Node.js & Express
- PHP & MySQL
- Swift
Soft Skills
- Project Management
- Public Relations
- Leadership
- Effective Communication
- Problem Solving
- UI/UX Design
- Team Collaboration
Client Testimonials
Don't just take my word for it. Here's what clients and collaborators say about working with me.
"Yusufhan has been instrumental in developing our mobile applications for premium automotive brands. His expertise in Flutter development and attention to detail consistently deliver high-quality results."
Doğuş Teknoloji
Automotive Technology Leader
Audi, Seat, Cupra Turkey
"Working with Yusufhan was a pleasure. He created a modern, responsive website that perfectly represents our brand and has significantly improved our online presence. Highly recommended!"
Ömer Saçaklı
Business Owner
Harbiye Kuaför
"Yusufhan built an impressive portfolio website that showcases our games beautifully. The site is fast, elegant, and exactly what we needed. His communication throughout the project was excellent."
Retro Zero Games
Gaming Content Creator
retrozero.games
Trusted By Leading Organizations
Doğuş Teknoloji
Leading automotive technology company
Audi Turkey
Premium automotive brand
Seat Turkey
Automotive manufacturer
Cupra Turkey
Performance automotive brand
Bahçeşehir University
Computer Engineering Department
Baykar Technologies
Defense technology company
My Services
I offer comprehensive software development services to bring your ideas to life. From initial concept to final deployment, I'm here to help.
Full-Stack Development
End-to-end software solutions from database to user interface. I architect and build scalable applications with modern tech stacks, handling both frontend and backend development.
Technologies
What's Included
- System architecture & design
- Database design & optimization
- RESTful API development
- Authentication & security
- Cloud deployment (AWS, Vercel)
Mobile App Development
Native-quality mobile applications using Flutter. From concept to App Store deployment, I create seamless cross-platform experiences for iOS and Android with a single codebase.
Technologies
What's Included
- Cross-platform development
- Custom UI/UX design
- Backend API integration
- Push notifications & analytics
- App Store & Play Store deployment
Software Consulting & Architecture
Technical consulting and software architecture design. I help teams make informed technology decisions, optimize existing systems, and plan scalable solutions.
Technologies
What's Included
- Technical architecture review
- Technology stack selection
- Code quality assessment
- Performance optimization
- Cybersecurity best practices
UI/UX Design & Frontend
User-centered design and modern frontend development. I create beautiful, responsive interfaces that provide exceptional user experiences across all devices.
Technologies
What's Included
- User research & wireframing
- Interactive prototypes
- Component-based development
- Animation & micro-interactions
- Cross-browser compatibility
Ready to Start Your Project?
Let's discuss your ideas and turn them into reality. Reach out via email or WhatsApp for a free consultation.
How I Work
A transparent, collaborative process that ensures your project is delivered on time and exceeds expectations.
Discovery & Planning
We start with a detailed discussion about your project goals, target audience, and requirements. I'll analyze your needs and create a comprehensive project plan.
Design & Prototyping
I create wireframes and interactive prototypes to visualize the user experience. You'll see exactly how your project will look and feel before development begins.
Development & Testing
I build your project using clean, maintainable code and industry best practices. Regular updates keep you informed, and rigorous testing ensures quality.
Launch & Support
After your approval, I deploy the project to production. I provide documentation, training if needed, and post-launch support to ensure everything runs smoothly.
Regular Updates
Stay informed with weekly progress reports
Open Communication
Direct access via WhatsApp, email, or video calls
Quality Assurance
Thorough testing and code review before delivery
My Projects
Explore my portfolio of web and mobile applications that showcase my technical skills and creative approach to problem-solving.
ModaModel - AI Fashion Photography
Transform any dress into stunning AI model photos instantly! Professional fashion photography made simple for boutique owners and designers. Perfect for e-commerce businesses looking to showcase their products with AI-generated model photos.
Published on App Store with in-app purchases and premium features
Workout Set Timer
A minimalist timer app for set-based workouts like ab training, HIIT, and interval training. Features custom set configuration, flexible durations, automatic rest intervals, and background timer support. Clean interface with no distractions - just reliable timing for your workouts.
Published on App Store with positive user reviews
Harbiye Kuaför - Modern Hair Salon Website
ClientA modern, responsive website for Ömer Saçaklı Hair Salon in Istanbul Şişli Harbiye. Features service listings, gallery showcase, customer testimonials, appointment booking system, and responsive design. Built with modern web technologies for optimal user experience.
Improved online presence and customer engagement for local business
Audi Mobile App
ClientDeveloped at Doğuş Teknoloji, this Flutter-based mobile application offers Audi owners comprehensive vehicle management, service booking, and exclusive content. Features include digital service history, dealer locator, and personalized vehicle information.
Enterprise-level app serving thousands of Audi customers in Turkey
Seat Mobile App
ClientCreated during my time at Doğuş Teknoloji, this Flutter application provides Seat vehicle owners with a seamless mobile experience. Features include maintenance scheduling, vehicle status monitoring, and direct communication channels with authorized service centers.
Streamlined vehicle maintenance and service booking for Seat owners
Cupra Mobile App
ClientDeveloped for Doğuş Teknoloji, this premium Flutter application serves Cupra vehicle owners with an elegant interface and advanced features. The app offers performance tracking, personalized vehicle insights, service reminders, and exclusive Cupra content.
Premium mobile experience for Cupra performance vehicle owners
Frequently Asked Questions
Everything you need to know about working with me. Can't find the answer you're looking for? Feel free to reach out directly.
Still Have Questions?
I'm here to help! Reach out and I'll get back to you within 24 hours.
Let's Connect
Have a project in mind or want to discuss potential opportunities? I'm always open to new ideas and collaborations.
Contact Details
Connect Online
Follow me on social media to stay updated with my latest projects and professional insights.
Ready to Start Your Project?
Let's discuss your ideas and turn them into reality. Reach out via email or WhatsApp, and I'll get back to you within 24 hours.