Hire the Best App Development Freelancers
in Argentina

✅ Top Rated Plus | ✅ 100% Success Score | ✅ Seasoned Professional - 30+ years in IT In the era of artificial intelligence, a comprehensive understanding of architecture, systems design, security, observability, and business requirements has become more valuable than specialized raw coding in software development. Experience plays a significant role in this field, and I am a seasoned professional with over three decades of experience in the IT industry. I work with Cursor & Claude Code and premium models. My current development stack: ✅ Python ✅ Django ✨Anthropic API ✨Gemini API ✨LangGraph/LangChain/LangSmith ✨CrewAI ✅ React ✅ Next.js ✅ HTMX ✅ JavaScript ✅ TypeScript ✅ Django Rest Framework ✅ Selenium Web Driver ✅ TastyPie API ✅ GeoDjango/Postgis My current infrastructure stack: ⚙️AWS Serverless: 👉 Lambda Functions 👉 Step Functions 👉 DynamoDB 👉 SQS 👉 Amplify ⚙️ Google: 👉 Oauth 👉 Google APIs ⚙️ Django Serverless: 👉 Heroku 👉 Railway.app 👉 Google App Engine ⚙️ Bare Metal/VPS: 👉 Linux 👉 PostgreSQL 👉 MySQL 👉 Mail Services 👉 Apache/NGINX Being in the industry since 1992, my career has demanded the development of both technical and commercial skills, as well as management abilities, particularly during the period I ran my own business from 2002 to 2015. Since 2022, I have been pursuing opportunities in software development as a freelancer.

⚡️𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝗡𝗼𝘄⚡️ - 🏆 TOP-RATED PLUS 🏆 Visual Designer on Upwork, with a wide range of expertise in UI and UX Design. 10 years working as a freelancer and 20 in the design field. As a modern UI/UX designer, my primary goal is to create visual designs that bridge the gap between users and technology through gorgeous and friendly experiences. Through all these years, I had the chance to work successfully with a diverse span of clients and industries all over the world, from healthcare and e-learning to streaming, e-commerce and Crypto. 🚀 I believe I'd be an asset for you because: 🚀 ✅ I have excellent visual design skills with sensitivity to user-system interaction. ✅ I have extensive experience working remotely and collaboratively ✅ I’m capable of communicating my ideas effectively across different audiences. ✅ I’m open to constructive feedback. ✅ Expert level skills in Figma, Adobe Creative Suite, Sketch and other relevant design tools. ✅ I’m capable of covering a wide variety of design tasks, from branding to UI/UX Design. The 🏆Clients’ Reviews🏆 below which you will find in my reviews section describes the quality of work and value that you can expect from working with me: —— ⭐️⭐️⭐️⭐️⭐️ "A real pleasure working with Hernan. Quality work, with adherence to deadlines. We have already selected him to continue to lead additional design components for our site." —— ⭐️⭐️⭐️⭐️⭐️ "Hernan’s design skills are next level. He does an excellent job with wireframes, mockups and screen designs with amazing UI and UX insight. Highly recommended." —— ⭐️⭐️⭐️⭐️⭐️ "We tried several designers, Hernan was the best. Great work!" —— If you're looking for a professional UI/UX designer, then I'm your guy. Tell me a bit about your idea and we can build something awesome together! I encourage you to work closely with me on your next successful project by taking advantage of my skills via Upwork. —— 🔎 You can track me down by these keywords:🔎 Web design, Mobile app design, iOS, Android, Desktop, SaaS, Software design, Dashboard, Graphic design, Material design, Responsive, Landing page, Logo, Prototyping, Wireframes, Usability, Redesign, UX/UI, User Experience, User Interface, Art director, Design thinking, WordPress, Figma, Sketch, Photoshop, Adobe XD, Illustrator, InVision, Zeplin, A/B testing, Interaction design, Design Thinking, Design guru, Design expert, B2B, B2C

Hello there! I’m a Designer with a degree in Multimedia and Interaction Design, boasting over 7 years of professional experience specializing in UI/UX design. I’ve had the privilege of collaborating with diverse industries, including e-commerce, healthcare, education, start-ups, and media companies, developing user-centered interfaces that integrate Accessibility, User Research, Information Architecture, and Usability Testing that prioritize seamless experiences. Figma and adobe XD serve as my virtual playgrounds, where I bring creativity to life. I’m constantly experimenting with AI and new tools to push the boundaries of design. My approach is meticulous throughout the process, from concept to the final execution. Making sure each project is aligned with UX and UI best practices to effectively address but also exceed client expectations. Don’t hesitate to reach out to discuss how my expertise can support your project’s success. Let’s connect!

🚀 Hi, I'm a TOP RATED developer in UPWORK 🚀 In the last 10 years I specialized in the development of web & mobile applications with Angular and Ionic framework. I've made more than 50 webs & apps for companies, institutions and startups. I have a deep knowledge of HTML, CSS and Javascript, which allows me to customize the look & feel and the user experience to what the client needs. Also i've experience in the implementation of cordova/capacitor plugins (Geolocation, Social Logins, Payment Gateways, Firebase, etc..) and conection with other devices (Bluetooth, beacons). I can publish your app on Google Play and Apple Store for you also. For me it is very important to build a good relationship with the client, so I do my best to understand the requirements, maintain constant feedback and deliver things on time. In all these years I have worked with the following technologies: UX / UI * Adobe XD / Sketch / Figma * Photoshop / Illustrator / After Effects * Balsamiq Mockups / Draw.io Frontend * HTML / CSS / SASS / Bootstrap * Javascript / Typescript * Angular / Ionic / PWA / Cordova / Capacitor Backend * Node.js / MongoDB / MySQL Testing * Cypress * TDD Development Deploy * Github / Bitbucket / Bash * Google Play Publishing / Apple Store Publishing / XCode (I work with Mac)