Kreativer App-Entwickler mit Multitalent-Profil: Programmiere Apps, gestalte Logos und löse vielseitige digitale Herausforderungen mit Expertise und Leidenschaft.

Formerly FAANG Infrastructure developer, I build backend and mobile apps for all businesses. If you're trying to build out CI/CD infrastructure, backend pipelines, or prototypes for Apple Platforms, I can help. - Knows Python, Kotlin, and Swift - Full Project Management from start to finish - Refular communication is important to me as well

Award-winning iOS Developer with 10+ years of experience crafting high-quality mobile applications within the Apple ecosystem. Recognized with the Apple Design Award & App Store Award (2024) for delivering user-centric, innovative apps with exceptional UX/UI design and solid architectures. ### Notable Projects: • Oko – Led a complete redesign of the award-winning app, helping people cross streets over 3M times. • Immoweb – Developed Belgium’s top real estate app with 1M+ downloads, enhancing accessibility and monetization. • WizList – A smart grocery management app with barcode scanning, used by thousands. • Any Recipe – A next-gen digital cookbook app, currently in development. ### Key Expertise & Skills: • Swift & iOS Development – Deep expertise in Swift, SwiftUI, and UIKit, building scalable, high-performance applications for iPhone, iPad, Apple Watch. • Software Architecture – Proficient in VIPER, MVVM, Clean Swift, ensuring robust, maintainable codebases. • UX/UI & Accessibility – Passionate about user experience, implementing i18n, L10n, and a11y best practices. • Agile & CI/CD – Experienced with SCRUM methodologies, Bitrise, Fastlane, Xcode Cloud, and automation testing (XCTest, Nimble). • Apple’s App Store & Distribution – Expertise in App Store submission, Ad-Hoc/Enterprise distribution, and monetization strategies. • Frameworks & Tools – Skilled in CoreData, AVFoundation, WidgetKit, and dependency managers (CocoaPods, SPM). • Analytics & Performance – Integrated Firebase, GoogleTagManager, and A/B testing to optimize apps.

Senior Software Engineer and Technical Lead with 13+ years of experience Specialized in C#, ASP.NET Core, .NET 8, Angular 10+, and enterprise application development Web Applications and Mobile Apps & Kiosks Experienced in designing scalable, secure, and high-performance software solutions Strong expertise in Azure, REST APIs, database architecture, and workflow automation Proven ability to lead end-to-end product development from concept to deployment Skilled at translating business requirements into effective technical solutions Experienced in building multi-platform and multi-tenant enterprise systems Strong leadership in bridging communication between business and engineering teams Proficient in Agile methodologies, CI/CD pipelines, and modern DevOps practices Focused on delivering reliable, maintainable, and high-quality solutions on time Capable of helping businesses transform ideas into successful software products Recent Work ERP system for service based industry which has booking, purchase different services across different branches.

Web Design 🎨, Web Development 💻, UI/UX Design 🖌️, CMS Management 🗂️, Responsive Design 📱, Automation 🛠️ Hello, my name is Bartosz Sucinski. I am a Google Certified web designer and developer with over 15 years of experience. In that time, I’ve completed numerous projects, including B2B SaaS platforms and e-commerce builds for Fortune 500 companies and SMBs alike. My unique strength lies in my ability to work at the intersection of UI/UX design and full-stack CMS development. This allows me to oversee projects from the initial design stages right through to a live, production-ready site. My approach ensures that your digital products don’t just look great, they function flawlessly. I am proficient in various platforms and tools including Webflow, WordPress, Wix Studio, Squarespace, Framer, and Shopify. With expertise in responsive design, custom CSS, and automation tools like Zapier and HubSpot, I ensure your digital presence is not only stunning but also effective in driving your business goals forward. 🎨 Web Design: Crafting stunning and user-friendly interfaces that engage your audience and enhance user experience. 💻 Web Development: Building robust, scalable, and high-performing websites tailored to your business needs and objectives. 🖌️ UI/UX Design: Delivering intuitive, seamless designs with user-centered methodologies to elevate user satisfaction and interaction. 🗂️ CMS Management: Expertly handling platforms like WordPress, Webflow, and more to ensure flexible and scalable digital solutions. 📱 Responsive Design: Writing custom CSS and testing across devices to guarantee optimal performance on any screen size. 🛠️ Automation: Implementing tools like Zapier and HubSpot for seamless workflows, leading to better efficiency in business operations. Let’s transform your digital vision into reality. Feel free to reach out to start our project journey together!

I am a senior iOS Engineer with over 12 years of experience specializing in developing cutting-edge applications that prioritize user experience and performance. My expertise encompasses crafting innovative solutions, from rapid prototyping to API design and complex application architecture. I have a proven ability to lead projects from concept to deployment, collaborating effectively with cross-functional teams to push the frontiers of mobile technology. Proficient in SwiftUI, programmatic UI, and robust testing methodologies, I excel in optimizing app performance and user interaction. If you seek a skilled developer ready to transform your ideas into impactful applications, I am eager to discuss how we can work together to achieve your goals.

Professional technology architect with more than 20 years of experience in web, mobile and desktop software development. With very strong programming and testing skills, one of my best qualities is to locate and fix complicated problems. 💻 Programming, DB and tech skills include, but not limit to: HTML, XML, CSS, JavaScript, PHP, .NET/C#, Swift, Mobile Apps (iOS and Android), React Native, MS SQL Server (MCTS), MySQL, MongoDB. Expertise in integrating AI solutions and third-party APIs. 🛠️ Hardware experience: Driver, RF, Bluetooth (BLE) and NFC communication development. 🔧Administration and DevOps: Linux Servers - Ubuntu/Debian, CentOS AWS Services - IAM, S3, CloudFront, EC2, ECS, CodePipeline, CloudFormation, etc.. Container application development with Docker 🛡️ QA Skills: UI and Security Testing - User experience and compatibility, DDoS, SQL Injection and other type of vulnerables. 🤝 Team Skills: Agile (Scrum, Kanban) project management, Team Leading, Knowledge Sharing, Code Audit

I am a full stack web and mobile developer with 11 years of experience designing, developing, and testing applications in the cloud. I have been a contractor for the past 9 years and have worked on projects ranging from website audits and database administration to full SaaS platforms, mobile apps, and APIs. I primarily work with PHP/Laravel, Python/FastAPI, JavaScript, VueJS, React, and React Native. I have also worked with a large number of APIs and SDKs ranging from ecommerce and payment APIs to OpenAI, Gemini, and Claude. Since starting on Upwork, I have worked on multiple successful projects and have had little to no issues learning existing software, understanding how it works, and building the features or applications my clients are looking for. Before becoming a contractor, I worked at a startup called Delta Five Systems. Delta Five is a robotics company that works with the hospitality industry. Their main product is a bed bug trap that automatically lures, captures, and reports a bed bug incident within a room. At Delta Five, I worked on the website, dashboard, device interface, internal applications, and API. The API had thousands of devices connecting daily to report their status and sync with the platform. Since becoming a contractor, I have worked on multiple successful projects. One of my earlier projects was Network Insights, an email analysis tool that analyzes communication between employees and clients to determine where communication is lacking. The tool used Slack, Office 365, and Gmail APIs to allow companies to run reports and determine where communication between employees and clients was slowing down or stopping. Another early project was eHangar, an interactive airplane panel designer that allows users to create airplane panels by dragging and dropping instruments directly onto the page. As the user creates the panel, the application automatically updates the price and weight based on the manufacturing specifications. I also worked with True Blue Life Insurance on their life insurance quoting system and WordPress site. My work on the WordPress side mainly involved custom plugins and SEO. One of my longest contracts was with BuyItLive, a social ecommerce platform that helps small businesses manage their sales and orders in one location. By connecting with Shopify, clients could easily import products from their existing store. We also built multiple payment options using Stripe, Square, WePay, Sezzle, and PayPal. More recently, I designed and developed a multi-tenant certification platform that allows companies to manage employee certifications, training, and testing. I worked directly with the owners of the company to understand their existing process and turn it into a SaaS application. The platform also includes an API that allows third-party software to integrate with and white-label parts of the system. I have also been working more with Python, FastAPI, React Native, and AI APIs. I have used OpenAI and Gemini for image analysis, data extraction, and turning AI responses into structured data that can actually be used within an application. Outside of client work, I am constantly building and testing new ideas. Some of my recent projects include BurnDoc, a temporary file sharing application; Mixing Maverick, a React Native app that uses AI image analysis to help users manage their home bar and identify bottles; and Cuztomisable, a reusable application foundation for authentication, user management, roles, MFA, and mobile API support. Over the past 11 years, I have worked on everything from connected devices and internal business tools to SaaS platforms, ecommerce systems, and mobile apps. I have never had an issue picking up a new API or learning an existing application. I actually enjoy getting into an existing project, figuring out how everything connects, and finding the best way to build what the client needs. I am always interested in new and exciting projects and am always willing to work with you on price. My main goal is to build your application to meet and/or exceed your expectations!

I’m a full-stack developer who builds production applications across web, iOS, desktop, and backend systems. I currently lead product and development work on QuickFlight, an aviation platform that delivers real-time aircraft tracking, flight planning, weather briefings, and EFB tools. This work involves native iOS development, web interfaces, backend services, APIs, and real-time data systems. My experience includes: • Native iOS apps (Swift & SwiftUI) from design through App Store release • Web applications and interfaces • Backend services and API development • Desktop tools and internal systems • Real-time data integration and production deployments I prefer projects where I can own meaningful parts of the stack and deliver clean, maintainable code that actually ships. Whether you need a new application built, an existing system improved, or help connecting frontend and backend systems, I bring practical experience from real production work. Available for hourly and fixed-price projects. Happy to discuss your requirements.

With over 15 years of experience as a full stack web developer, project manager, and team leader, I am adept at finding solutions to intricate problems and providing innovative results. My passion for programming and technology has driven me to work on various challenging projects, where I have sharpened my skills in multiple programming languages. Constantly looking for new web development trends, I'm always seeking new ways to improve my craft. Moreover, I have excellent leadership qualities and excel at managing teams and communicating with clients. I am recognized for my ability to simplify complex technical concepts so that non-technical stakeholders can comprehend them. My project management skills are exceptional, and I take pride in delivering projects on schedule and within budget. My primary objective is to achieve top-quality results.