With 6+ years of experience in frontend development, I specialize in creating dynamic, responsive, and user-friendly web applications. My expertise spans across Vue.js (Vue 2 & Vue 3), utilizing both the Options API and Composition API, as well as React.js for building scalable and high-performance applications.
Key Skills and Technologies:
Frontend Frameworks:
Vue.js, React.js, Nuxt.js
Proficient in designing pixel-perfect UIs and handling complex application states.
UI Libraries:
Tailwind CSS, Bootstrap, Vuetify for Vue.js
Material-UI, Ant Design for React.js
Backend Development:
Node.js with Express.js
Expertise in working with MongoDB for scalable database solutions.
CMS Integration:
Extensive experience with Shopware and Strapi, seamlessly integrating CMS platforms for e-commerce and content-heavy projects.
Additional Tools:
Experience with Storyblok for headless CMS-driven websites.
Proficient in API integration, delivering smooth and efficient backend communication.
What I Offer:
I bring a complete development stack to your project—ensuring smooth collaboration between frontend and backend, optimizing performance, and delivering a visually stunning, responsive design. Whether it’s a single-page application, e-commerce platform, or CMS-based site, I prioritize quality and functionality to meet your business needs.
Why Choose Me?
Detail-Oriented: I excel in pixel-perfect designs that align with your vision and brand identity.
Efficient Communication: Transparent and consistent updates throughout the project lifecycle.
Problem Solver: Tackling challenges with innovative solutions and clean, maintainable code.
Let’s work together to bring your ideas to life! Feel free to reach out to discuss your project requirements.
CSS
CSS 3
Vue.js
JavaScript
Nuxt.js
Front-End Development
Tailwind CSS
API Integration
Vuetify
Laravel
Tailwind UI
React
Shopware
OpenAI API
Claude 3.5 Sonnet
Orest K.
Vienna, Austria
$15/hr
5.0
2 jobs
I build production web apps and marketing sites that load fast, look serious, and don't fall over. React + TypeScript on the frontend, Python or Node on the backend, deployed on infrastructure that scales without surprise bills.
Background: BSc Software Engineering at TU Wien (Vienna University of Technology). Registered Austrian sole trader since March 2026, operating as Orest Karpiak IT & Electronics. Based in Vienna, working in English, German, Russian, and Ukrainian.
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WHAT I BUILD
Frontend
• React 18 + TypeScript + Vite — the modern stack, fast dev loops, fast user loads
• Tailwind CSS, custom design systems, no off-the-shelf template look
• Fully responsive, accessible, sub-second LCP on real connections
• Marketing sites, dashboards, internal tools, SaaS frontends
Backend
• Python with FastAPI — clean REST APIs, async where it matters, OpenAPI docs out of the box
• Node.js / TypeScript when the rest of the stack calls for it
• Haskell / Servant when type safety is a hard requirement
• PostgreSQL, EdgeDB, Redis, well-designed schemas and migrations
Infrastructure
• Cloudflare Pages and Workers for static and edge-rendered sites
• Hetzner VPS for backends, Docker, systemd, properly configured nginx
• Stripe integration for payments and subscriptions
• CI/CD with GitHub Actions
Quality work the cheap freelancers skip
• Real Lighthouse scores, not lies
• Structured data markup so you actually rank in local search
• Proper error handling, logging, and uptime monitoring
• Clean handoff documentation so you (or the next dev) aren't stuck
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RECENT WEB WORK
• Restaurant Wang — single-page marketing site for a 35-year-old Vienna Cantonese/Szechuan restaurant. Hand-written, sub-second load, structured data for local SEO, deployed on Cloudflare Pages.
• Rich Witch — landing page for a Vienna avant-garde fashion brand. Dark editorial aesthetic, custom cursor animation, mask-based photo reveals.
• My own developer portfolio site. React + TypeScript + Vite + Tailwind, edge-cached on Cloudflare Pages.
• Security audits — caught a Parasite SEO / bot-cloaking attack on a client e-commerce site that had been live for months without detection.
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HOW I WORK
• Fixed-scope quotes whenever the work allows. Hourly only for genuinely open-ended exploration.
• Direct communication — I flag bad ideas, scope creep, and cases where someone else would serve you better, before they cost you money.
• I ship. If I commit to a date, you get it.
• Comfortable with both technical clients (founders, engineering teams) and non-technical ones (small business owners, designers, agencies).
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ALSO IN MY TOOLBOX
Beyond web work I design custom electronics — PCBs in KiCad and Altium, ESP32 firmware, IoT devices that talk to a backend. Not many web developers can also build the hardware, and it shows up where it counts: APIs designed by someone who knows what's on the other end of the wire, dashboards built by someone who's actually shipped a sensor.
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BEST FIT
• Marketing sites and landing pages for small-to-medium businesses
• SaaS frontends, internal tools, dashboards
• API design and backend builds
• Performance, SEO, or security audits with concrete deliverables
• Cleanup or migration work on neglected codebases
• Anything web that touches hardware or IoT
Send me your brief. I'll tell you within a day whether I'm the right person, and if I am, you'll get a fixed quote and timeline.
React
TypeScript
Python
Front-End Development
Web Development
Tailwind CSS
PCB Design
Internet of Things Solutions Design
Node.js
PostgreSQL
REST API
Figma
Vercel
SaaS Development
PostgreSQL Programming
Supabase
Stripe
Email Automation
Database
Theoretical Machine Learning
Bamidele Clement O.
Salzburg, Austria
$35/hr
4.8
36 jobs
I am an Esri Certified GIS Analyst and Developer with double MSc. degrees in Geoinformatics & Cartography and over 6 years of professional experience turning geospatial data into clear, accurate and user-friendly solutions. (My ePortfolio is available at bamideleoke.dev)
The following are my areas of expertise and tools I use:
🌍 Spatial analysis & geoprocessing (ArcGIS Pro, QGIS, Python, R)
🌍 Map production & cartographic design (ArcGIS Pro, QGIS, Affinity)
🌍 ArcGIS Online & Enterprise deployment, configuration, administration, and troubleshooting
🌍 Dashboard development (ArcGIS Dashboards, Power BI, Experience Builder, Looker Studio)
🌍 Field data collection (Survey123, Field Maps, QuickCapture, ODK, Kobo Toolbox)
🌍 Interactive web mapping app development (Leaflet, Mapbox, Maptiler OSM, Google Maps API, etc)
🌍 Web application development (JavaScript, Python, Node.js, PHP, HTML, CSS)
🌍 Android (Java/Kotlin) application development
🌍 Python/ArcPy automation & ETL workflows
🌍 Geospatial data management (database modelling, data cleaning, conversion & integration)
🌍 User testing & usability optimization
🌍 GIS technical support & troubleshooting
🌍 3D/Indoor mapping (Scene Viewer, ArcGIS Indoors)
🌍 Environmental mapping & EIA support
🌍 Parcel and utility mapping and data modelling (ArcGIS Parcel Fabric, Utility Network, Pipeline Referencing)
🌍 Remote sensing & image processing (eCognition, SNAP, GEE)
🌍 LULC mapping, indices & change detection
🌍 Drone/UAV data processing (orthomosaics, DSM/DTM)
Over the years, I have worked on environmental mapping projects, enterprise GIS deployments, real-time dashboards, custom data collection workflows, data modelling, and interactive web maps used by government agencies and NGOs. I focus on clean design, usability, and efficient workflows that make geospatial data easy to understand and use.
If you need reliable GIS expertise, clear communication, and high-quality results delivered on time, I can be of immense help.
#GIS #RemoteSensing #ArcGISPro #ArcGISEnterprise #ArcGISOnline #ENVI #GoogleEarthEngine #WebGIS #LeafletJS #Mapbox #MapTiler #GeospatialAnalysis #SpatialAnalysis #Cartography #GISMapping #Dashboards #Survey123 #FieldMaps #ODK #KoboToolbox #XLSForm #ArcPy #Python #ETL #Automation #Android #Parcel #GeospatialDevelopment #EnvironmentalMapping #eCognition #OBIA #LULC #GISConsultant #GISDeveloper
Data Entry
Microsoft Excel
Web Design
Data Visualization
GeoJSON
Dashboard
Digital Mapping
Android App Development
Data Analysis
ArcGIS Online
GIS
ArcGIS
3D Modeling
3D Printing
ETL Pipeline
Sebastian M.
Vienna, Austria
$95/hr
4.3
33 jobs
Hi, I’m Sebastian Maur.
A Full-Stack Web Developer with 10+ years of experience in custom web applications, high performance WordPress websites, and scalable e-commerce solutions. Whether you're looking for a secure Laravel-based web app, a custom WordPress site, or API integrations, I bring a problem-solving mindset, clean code, and a deep understanding of modern development practices.
100% Job Success Score | On-Time Delivery | Scalable, Secure, & High-Performance Solutions
I don’t just build websites—I create solutions that help businesses scale, optimize, and perform at their best. Let’s turn your vision into reality!
What I Do Best:
Custom Web & App Development (Laravel & PHP)
⎯ Full-stack development with Laravel, Vue.js, Angular.js, PHP
⎯ RESTful API development & third-party integrations
⎯ Custom-built, scalable web applications
⎯ Laravel version upgrades & performance optimization
⎯ Bug fixing & security enhancements
WordPress Development & Optimization
⎯ Custom WordPress themes & plugins tailored to your needs
⎯ WooCommerce development – setup, customization & payment gateway integration
⎯ WordPress speed, performance, & SEO optimization
⎯ API integrations (Stripe, PayPal, MailChimp, Zapier, etc.)
⎯ Full WordPress site development (from Figma, PSD, or Sketch)
E-commerce & Payment Integrations
⎯ WooCommerce & Laravel-powered e-commerce solutions
⎯ Subscription-based & multi-vendor marketplaces
⎯ Payment gateway integrations (PayPal, Stripe, Mollie, etc.)
Website Performance, Security & Maintenance
⎯ Speed & performance optimization for faster load times
⎯ Securing sites against hacks & vulnerabilities
⎯ Troubleshooting hosting & deployment issues
Tech Stack & Tools I Use:
⎯ Backend: PHP (Laravel, Core PHP)
⎯ Frontend: Vue.js, Angular.js, Blade, HTML, CSS, JavaScript, Bootstrap ⎯ Database: MySQL
⎯ CMS & Platforms: WordPress, WooCommerce, Elementor, Divi, WPBakery ⎯ Integrations: APIs,
Payment Gateways (PayPal, Stripe, Mollie), CRM & automation tools
Industries I Work With:
⎯ FinTech & Banking → Secure and compliant platforms
⎯ E-commerce & Retail → Scalable online stores & marketplaces
⎯ Startups & SaaS → Future-proof, growth-oriented solutions
⎯ Media & Entertainment → Engaging digital platforms
Why Hire Me?
⎯ Proven Experience – 10+ years of successful projects
⎯ Custom, Scalable & High-Performance Solutions – Code that grows with your business ⎯ SEO-
Optimized & Mobile-Friendly – Websites that rank & convert
⎯ Reliable & Communicative – Fast turnaround, clear updates, & top-notch support Let’s Build Something Amazing!
Whether you need a custom web application, a high-performance WordPress site, or seamless API integrations, I’m here to help. Send me a message, and let’s discuss your project!
P.S. Got a specific feature, bug, or custom request? I love tackling challenges—reach out, and let’s make it happen!
CSS 3
WordPress Plugin
CMS Development
WordPress
HTML5
Plugin Development
JavaScript
PHP
PSD to WordPress
Responsive Design
András K.
Moedling, Austria
$70/hr
4.8
47 jobs
You want a beautiful-looking, well-coded, blazingly fast site that looks good on all devices and converts well. I can deliver all of this to you!
With over 15 years of experience in development, I can manage projects from concept to completion on time and within budget.
Here are testimonials from the results I've created:
"Excellent communication, very open to accommodating feedback, very responsive both in communication and in delivering work. Very happy with how this contract went."
— Paris D.
"Andras is very positional, responsive, and skilled.”
— Joe F.
“András is exactly the kind of person you want to hire. He's knowledgeable, efficient, and easy to communicate with. He got everything done in a timely manner. When he came up against an issue that didn't have a cut-and-dry solution, he would give me all of the available options, along with the pros and cons of each, so I could decide which path to take.
There is no question, I would absolutely hire András again.”
— Sean R.
Hello and welcome. I'm Andras Klikk.
I specialize in:
1. WordPress
2. Shopify
3. Front-end development
4. SPAs (React, NextJS, graphQL)
5. Delivering great results
1, WordPress development
With over 100 completed WordPress websites over the past few years, I am sure I will be able to help you with your new site, theme, or plugin.
2, Shopify
Having worked on over 50 Shopify stores (including Plus) I can help you with complete setup, custom theme and app development, extensions, accessibility, and performance upgrades.
3, Front-end development
I have over 15 years of experience in front-end development, from small creative sites to big eCommerce solutions I have worked on everything. I have a mobile-first approach and I am very serious about my work.
4, HTML, CSS, PHP and Javascript
I have strong skills in HTML, CSS, and Javascript ( various frameworks included ). I have scored in the top 10% in numerous skill tests here at Upwork and am constantly educating myself to stay top-notch.
5, Delivering great results
Client satisfaction is my top priority. My job is also my hobby - I guarantee I will give my 100% to help you reach your goals.
If you are tired of lazy developers who can not make up for their promises then stop wasting your money and give me a shout.
Sound good? Click on the green Hire Me/Contact button and let’s chat. You won’t regret it.
Regards,
Andras K.
CSS
HTML
JavaScript
WordPress
HTML5
Front-End Development
Search Engine Optimization
PHP
Shopify
Aditya K.
Vienna, Austria
$15/hr
5.0
2 jobs
💼 4+ Years Professional Experience | Former Co-Founder | 40+ Projects Delivered
🌍 Trusted by clients in UK, USA, and Australia
Hi, I'm Aditya! I'm a full stack developer who builds scalable, high-performance web applications that solve real business problems. As a former co-founder of a web development company, I've led teams, managed complex projects, and delivered solutions that drive results.
⭐ What Makes Me Different?
I don't just code, I solve problems. Before writing a single line of code, I take time to understand your business goals and challenges. This approach has earned me a 5-star rating and helped me deliver 40+ successful projects across different industries.
My background as a co-founder means I think like a business owner. I understand deadlines, budgets, and the importance of delivering value. I'm not just a developer you hire, I'm a partner invested in your project's success.
🔥 Recent Highlights:
Senior Developer at W3 Web Technology, London: Built a comprehensive restaurant management system with advanced analytics and reporting features that improved operational efficiency. Developed multiple web applications including movie management and table reservation systems handling thousands of daily users.
Laravel Developer at Peace Nepal: Specialized in high-security applications for sensitive industries. Implemented advanced security measures including DDoS mitigation, brute force protection, and rate limiting for core banking systems, hospital management platforms, and broker systems. Significantly improved application performance through code optimization.
Co-Founder at 101 Infotech: Led company strategy and assembled a skilled development team. Created YourHostel, a hostel management software featured in Tech Pana news portal. Managed 40+ projects from conception to deployment while mentoring junior developers.
💻 Technical Expertise:
Backend: PHP, Laravel, Node.js, API Development & Integration
Frontend: React.js, Vue.js, Inertia.js, TypeScript, JavaScript, jQuery
Styling: Tailwind CSS, Bootstrap, Semantic UI, Responsive Design
Database: MySQL, MongoDB, MariaDB, Database Optimization
Tools: Git (GitHub, Bitbucket, GitLab), Docker, Filament, Livewire
Other: Figma/PSD to Code, SEO Optimization, Page Speed Enhancement
🎯 Projects I Excel At:
Restaurant & Hospitality Management Systems
E-Commerce Platforms & Online Shopping Solutions
Insurance & Financial Management Applications
Educational & Directory Websites
Custom CRM & ERP Systems
Real-time Applications (Chat, Notifications, Tracking)
Secure Applications for Sensitive Industries
✅ Why Clients Choose Me:
Proven Track Record: 5-star rating with consistent client satisfaction
Fast & Responsive: Quick turnaround times and readily available for communication
Security Focused: Experience building highly secure applications for banking and healthcare
Performance Driven: Expert in code optimization and scalability
Team Leadership: Experience managing developers and coordinating with designers and QA
Clear Communication: I keep you updated at every step and ensure we're aligned on goals
Deadline Committed: Consistent on-time delivery across all projects
🏆 Notable Achievements:
Featured in Tech Pana for YourHostel innovation
Winner of Idea Hunt Competition at Trinity International College
Tech Club President, organized multiple tech events
Successfully led team of 5-6 developers as co-founder
📍 Currently Available:
I'm based in Vienna, Austria, and available for both short-term and long-term projects. My flexible schedule allows me to accommodate different time zones and project requirements.
💡 My Promise to You:
When you work with me, you're not just getting a developer, you're getting someone who cares about your success. I'll communicate clearly, deliver on time, and build solutions that exceed your expectations. Whether you need a complete system built from scratch or want to optimize an existing application, I have the skills and experience to make it happen.
Let's discuss your project and turn your ideas into reality. I'm excited to collaborate with you and help your business grow!
CSS
CSS 3
Web Design
WordPress
JavaScript
PHP
UX & UI
Bootstrap
React
Web Application
Data Science
Laravel
Django
Machine Learning
Custom PHP
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