Hire the Best Desktop Applications Developers
in Portugal

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Diogo N.

Lisbon, Portugal

$4/hr
5.0
1 jobs

I'm a Designer and Developer with experience in build solutions from websites to web application for small and large sized businesses. If you are looking for something simple and quick I'm here to help you. I work full time as a Design and FrontEnd Developer but on my free time I help very small businesses with their communication. I'm new to UpWork but looking foward to work with you.

  • Web Design
  • Microsoft PowerPoint
  • Adobe After Effects
  • App Development
  • Construction Document Preparation
  • Web Development
  • HTML5
  • Adobe Creative Cloud
  • Web Application
  • JavaScript
  • App Design
  • Motion Graphics
  • Conversion to HTML
  • Motion Design
  • CSS 3
Joao F.

Corroios, Portugal

$40/hr
4.9
33 jobs

PhD-trained engineer building production AI applications with Python, Django, and modern LLM tooling. I take AI projects from prototype to shipped product — RAG systems, agents, custom integrations, and the full-stack web or desktop applications that wrap them. What I'm hired for: - LLM application engineering — RAG pipelines, multi-step agents, custom evaluation harnesses, OpenAI / Anthropic / open-source model integration, structured output and tool use, prompt and retrieval optimization - Django & FastAPI backends for AI products — auth, billing, async job queues, streaming responses, vector stores (pgvector, Qdrant, Chroma), observability for LLM calls - AI-powered desktop applications — Tauri (Rust) and PyQt5 for clients who need offline-capable, on-prem, or data-sensitive tools. A rare combination: most AI engineers can't ship desktop; most desktop developers can't ship AI - Scientific and R&D software — instrumentation control, data pipelines, numerical analysis. Background suited to biotech, hardware, and research-driven startups Background: - PhD in Electrical Engineering, University of Southampton (2022) - 2,300+ hours and $100K+ delivered on Upwork. Top Rated, 100% Job Success - Roles at two scientific instrumentation startups (Lightcast Discovery, CellCraft) Core stack: Python, Rust, Django, FastAPI, HTMX, PostgreSQL + pgvector, Docker, Kubernetes, AWS, OpenAI/Anthropic APIs, Tauri, PyQt5. I work best with founders and small teams who want someone senior — someone who'll push back on bad ideas, ship clean code, and stay with the project until it works in production, not just in a demo. If that sounds like what you need, send me a few sentences about what you're building and we'll talk.

  • Python
  • LLM Prompt
  • Retrieval Augmented Generation
  • AI Agent Development
  • OpenAI API
  • Django
  • FastAPI
  • PostgreSQL
  • Vector Database
  • Docker
  • AWS Application
  • Rust
  • PyQt
  • Prompt Engineering
  • Machine Learning
Rostyslav B.

Lisbon, Portugal

$50/hr
5.0
22 jobs

Working on projects starting $5k+ for startups & SaaS companies build products that drive business growth I'm a SaaS UI UX designer and Mobile UI UX Designer with 8+ years of experience in Figma and product design - helping founders, startups, SaaS companies, and growing businesses make better product decisions before, during, and after design. My role as a UI UX Designer goes beyond creating attractive interfaces - I help businesses validate ideas, improve user experiences, increase AI adoption, and remove the product friction that limits growth 204+ successful UI/UX projects delivered Click the «INVITE» to discuss your project or get a FREE UI UX Designer audit! """Ross, Dymytrii and their team at Lynksen did such a fantastic job for us we rehired them week after week to not only handle the design but expanded the work to the entire development of our platform. They constantly came to the table with both creative and cost effective solutions for our project. Cannot recommend them enough." Why should you hire me as a UI UX Designer? ▸ FREE Loom UI UX Designer audit with clear and valuable solutions ▸ 8+ years of experience in UX & UI, Web Design, and Mobile App Design ▸ 204+ successful projects across SaaS, MVPs, startups, Fintech, Healthcare, Logistics, Artificial Intelligence, and a wide range of industries ▸ 204+ happy clients who have seen tangible business growth ▸ Expert in Figma, Adobe XD, Adobe Illustrator, Webflow ▸ Help founders validate SaaS ideas, MVPs, and new features before investing in design and development, reducing product risk and costly mistakes ▸ Improve AI product adoption by identifying why users don't understand, trust, or regularly use AI features - and redesigning the experience around real user behavior ▸ Uncover UX friction across onboarding, user flows, conversion funnels, and checkout experiences to increase activation, retention, and revenue growth ▸ Combine UX research, product strategy, user interviews, and product analytics to turn assumptions into confident product decisions ▸ UI UX Design scalable SaaS products, AI platforms, mobile apps, and web applications that balance user experience with measurable business growth ▸ Create production-ready UI UX Figma Designer prototypes, design systems, and developer handoff documentation ▸ Partner with startups from concept validation to product growth, helping teams prioritize the features that deliver the highest business impact ▸ Delivered high-impact prototypes in record time for urgent product launches and investor demos ▸ UI UX Designer for cross-platform experiences for web, mobile (iOS & Android), and desktop applications consistently ▸ UI UX designer SaaS Figma, UI UX designer AI, UI UX designer Website, ui ux designer ▸ Specialized in SaaS dashboards, AI products, e-commerce, and mobile-first design My Achievements in Numbers: SaaS UI UX Designer for a Logistics SaaS Application ▪ Increased pharmacy order efficiency by 120% with optimized SaaS workflows ▪ Reduced human error by 35% through UX Audit, improved usability and interface accuracy ▪ Improved checkout speed by 25% and lowered customer drop-offs ▪ Cut manual tasks by 50% through UI automation and streamlined flows ▪ 100+ projects delivered - from enterprise SaaS dashboards to high-converting e-commerce stores ▪ 5000+ wireframes & 150+ prototypes created to streamline development and reduce costly revisions. ▪ 30+ design awards and professional certificates I've earned over the last years as a UI UX Designer ▪ Built and maintained 10+ scalable UI UX Designer systems used by dev teams across multiple products. ▪ Redesigned onboarding flows that improved user retention by up to 35%. ▪ Helped clients raise $2M+ in funding with pitch decks and MVP prototypes. UI UX Figma Designer and UI UX Designer for an eCommerce Website ▪ Boosted revenue by 19% through usability-focused design updates. ▪ Reduced cart abandonment by 22% with improved navigation and product flow. My Mission as a UI UX Designer - to empower businesses to achieve their goals in Mobile Apps, SaaS Applications, SaaS, Artificial Intelligence, Startups, Fintech, Healthcare, Logistics, B2B Platforms, Marketplaces, Mobile Applications, B2B, B2C, eCommerce, AI, crypto, DeFi, and more through thoughtful, intuitive, and user-centered design Looking for an experienced UI/UX Designer UI UX Designer UIUX designer UXUI designer who can identify usability issues, improve user flows, navigation, layouts, dashboards, digital product design, UI UX designer expertise, user experience, user interface, user interaction, UX wireframing, Figma, adobe, creative web design, mobile design, ecommerce uiux, react, mobile app, web application, website design, ux research, mockup design, ui ux designer for SaaS design, android design, IOS design and interaction design, and take your product to the next level, boost conversions, and drive business growth? Always happy to chat or schedule a call (answering time up 1 hour)

  • Figma
  • User Experience Design
  • User Interface Design
  • UX & UI
  • Mobile App Design
  • Web Design
  • UI/UX Prototyping
  • Graphic Design
  • Landing Page
  • Website
  • SaaS
  • Webflow
  • User Experience
  • Product Design
  • Adobe Photoshop
  • Wireframe
  • Mobile UI Design
  • Usability Testing
  • User Flow
  • UX Research
Mohsin Abbas H.

Fanhoes, Portugal

$90/hr
5.0
33 jobs

After dedicating over two decades to programming, I have seamlessly transitioned into the world of Artificial Intelligence (AI), combining my deep technical knowledge with cutting-edge AI innovation. My journey in AI has seen me build AI agents, develop AI-backed products, and create intelligent AI call centers and chat solutions. As a versatile technologist, I draw from my rich background in Software Design, Development, and Architecture to craft solutions that are not only functional but also future-ready. While my expertise spans multiple domains, including Software Architecture, Database Design, Server Stack Management, and DevOps, AI has become my true passion. I’ve worked extensively with modern AI technologies to create products that leverage machine learning, natural language processing, and automation to deliver superior user experiences and optimize business operations. Throughout my career, I’ve used my broad knowledge in programming languages—especially Python, PHP, Java, and .Net—to build web and desktop applications. I’m skilled in a variety of frameworks, including WordPress, Laravel, CI/Symfony, Flutter, React, and Xamarin, and I’m proficient in JavaScript, CSS, JQuery, Angular, and Vue.JS and Nuxt.JS. In addition to developing AI-driven products, I lead teams of highly skilled professionals, including designers, animators, social media experts, customer service representatives, and virtual assistants, ensuring that every project exceeds client expectations. As I continue to innovate within the AI space, I’m eager to contribute to the next big breakthrough. If you're looking for an AI-focused expert who blends decades of experience with forward-thinking AI solutions, let’s connect and explore how I can help turn your ideas into reality.

  • AI Agent Development
  • AI Builder
  • AI App Development
  • LLM Prompt Engineering
  • SaaS Development
  • Nuxt.js
  • AWS Application
  • AWS Amplify
  • AWS Lambda
  • AWS Development
  • TypeScript
  • Node.js
  • Python
  • FastAPI
  • Vector Database
  • PHP
  • UI/UX Prototyping
  • Video Editing
  • Search Engine Optimization
  • Automation
  • 3D Animation
  • Flutter
  • jQuery
  • WordPress
  • API Integration

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