๐ Top-Rated Full Stack Developer โ Build High-Performance, SEO-Optimized Websites That Drive Results!
I create fast, SEO-friendly web applications that rank higher and deliver seamless user experiences.
With 6+ years of full-stack development experience, I specialize in crafting tailored SEO-friendly web applications to meet unique business needs. ๐ปโจ Proficient in both front-end and back-end technologies, I seamlessly integrate robust functionalities for exceptional user experiences while ensuring high performance, fast load speeds, and search engine visibility.
From PHP/Laravel to Node.js, jQuery, JavaScript, React.js, Next.js, Vue.js, and MySQL, I ensure efficient data management, structured markup, and SEO-optimized code for better Google rankings. ๐ง๐
๐น Key Skills:
โ Backend Development: PHP, Laravel, Node.js, jQuery, JavaScript ๐ฅ๏ธ
โ Frontend Development: React.js, Next.js, Vue.js ๐
โ Databases: MySQL ๐พ
โ SEO Optimization for Web Apps โ Technical SEO, structured data, schema markup, meta tags
โ Custom Web Application Development ๐
โ Responsive & Mobile-First Web Design ๐ฑ
โ User Experience & SEO Optimization ๐จ
โ Performance Optimization for Google Core Web Vitals โก
โ Troubleshooting & Issue Resolution ๐ ๏ธ
๐น Why Hire Me?
โ Proven Track Record: Delivering high-quality, tailor-made web applications with SEO-optimized structure for better rankings.
โ Technical SEO & Web Performance: Ensuring faster load times, optimized images, minified CSS/JS, and improved Core Web Vitals for higher search rankings.
โ Google-Friendly Development: Implementing structured data, sitemaps, canonical tags, and SEO best practices for better indexing.
โ E-Commerce SEO Expertise: Optimizing WooCommerce, Shopify, and Laravel-based stores for organic traffic and conversions.
โ AI & Automation: Integrating AI-powered chatbots, recommendation engines, and automated workflows to enhance user experience.
โ Strong Problem-Solving Skills: Attention to detail ensures timely and effective issue resolution.
โ Effective Collaboration & Communication: Working seamlessly with teams for smooth project execution.
๐ I Can Help You With:
๐ Custom Websites โ SEO-optimized, fast, and user-friendly
๐ E-Commerce Solutions โ Shopify, WooCommerce, Laravel, and custom stores
๐ ERP Systems โ Efficient data management and automation
๐ E-Learning Management Systems โ Scalable and interactive platforms
๐ณ Payment Integrations (Stripe, PayPal, etc.) โ Secure and seamless transactions
๐ค AI Integrations & Automation โ Chatbots, recommendation engines, AI-driven analytics
Letโs collaborate to bring your vision to life with SEO-friendly, high-performance web applications that drive organic traffic, user engagement, and business growth! ๐๐
Front-End Development
PHP
Laravel
Node.js
JavaScript
ExpressJS
React
MongoDB
RESTful Architecture
Fabric.js
UI/UX Prototyping
jQuery
HTML5 Canvas
Back-End Development
SEO-Based Website
Ievgen K.
Vienna, Austria
$86/hr
5.0
5 jobs
Fullstack web developer with focus on React front-end developer (10 years) and former iOS developer (5 years). Master's in Computer Engineering.
๐จโ๐ป I'm all about top-notch code quality.
๐ค I craft solutions with the next person in mind for smooth handover.
โจ Simplicity and elegance are my go-to for easy maintenance.
๐ Transparency is my thing at every step of our collaboration.
๐ Your ideas and secrets? Locked tight with meโtotal confidentiality guaranteed!
Core Technical Skills
โข Fullstack development: ๐ป Next.js, node.js, Supabase, MongoDB
โข Frontend development: ๐ป React.js, Vue.js, TypeScript, JavaScript, SCSS, SASS, Stylus, PostCSS, BEM
โข State management: ๐งฉ Redux, MobX, Pinia, vuex
โข Testing & Quality Assurance: ๐งช Jest, Cypress, React Testing Library
โข Build & deployment tools: ๐ ๏ธ webpack, Vite, gulp, babel, TeamCity, Azure DevOps, GitLab
โข Code quality & standards: โ eslint, Prettier, husky, dprint
โข User Interface Design: ๐จ Storybook, Lottie, Figma, Sketch
โข Data integration & analytics: ๐ axios, Formik, redux-form, Posthog, Azure App Insights, Google Analytics
โข Mapping & visualization: ๐บ๏ธ Google Maps, Apexcharts
โข Web servers & hosting: โ๏ธ Microsoft Azure (AKS, Azure App Services, IIS), nginx
๐ ๏ธ Committed to delivering robust, scalable, and maintainable solutions with a focus on efficiency and best practices.
Front-End Development
Web Development
React
TypeScript
JavaScript
Redux
HTML
CSS
Web Application
Node.js
API Integration
HTML5
API
Next.js
Tailwind CSS
Andrรกs 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."
โ Paris D.
"Andras is very positional, responsive, and skilled.โ
โ Joe F.
โAndrรกs 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 Andrรกs again.โ
โ 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 letโs chat. You wonโt regret it.
Regards,
Andras K.
Front-End Development
CSS
HTML
JavaScript
WordPress
HTML5
Search Engine Optimization
PHP
Shopify
Oleksii I.
Vienna, Austria
$37/hr
5.0
39 jobs
Start shipping intelligent, autonomous AI systems that drive real business results
With 40+ years of combined engineering experience and 870+ completed projects,
I work as a Machine Learning Engineer, AI Engineer, MLOps Engineer, and Python Developer - delivering production-grade AI systems using Python, LangChain, LangGraph, RAG pipelines, LLM integrations, and full MLOps / DevOps infrastructure.
I operate with a team of 90+ engineers across AI, Backend, and DevOps, serving US and European clients from prototype to production.
Across 870+ projects and 40+ years of combined stack experience, our team has scaled AI systems to handle millions of requests daily - from RAG pipelines that replaced 3 full-time support agents, to LLM workflows that cut manual operations by 70%, to MLOps infrastructure that grew deployments from 1 to 120 per month.
With 870+ projects behind us, I deliver end-to-end LLM integration using Python, GPT-4, GPT-5, Claude, LLaMA, and Mistral - including prompt engineering, context engineering, and embedding pipelines. Using LangChain and LangGraph, I build multi-agent AI systems where each agent handles retrieval, reasoning, and execution autonomously. Across 40+ years of combined AI development experience, we've shipped agent orchestration systems for fintech, healthcare, SaaS, and enterprise clients.
I build RAG pipelines using Python, Weaviate, Chroma, semantic search, and knowledge retrieval systems integrated into production workflows - connected to PostgreSQL, MongoDB, CRMs, and internal knowledge bases. With 870+ completed projects, including dozens of RAG systems, one pipeline alone reduced support workload equivalent to 3 full-time employees, cutting response time from hours to seconds.
I'M Full-Stack Developer with 9 years experience and 12 completed projects, specializing in scalable event platforms.
7 years full-stack experience, 18 projects delivered expert in Django + React SaaS solutions.
5 years building ticketing systems with 14 completed projects, experienced in payment integration and real-time inventory.
10 years full-stack development, 16 delivered projects ready for long-term SaaS partnerships and rapid MVPs.
$4.6M+ client impact and $1.3M+ direct revenue across products developed with React, Next.js, and Node.js.
24,000+ active users across Web and Mobile platforms where React frontends and Node.js services increased user engagement by 21โ30%.
13,500+ users across FinTech and payment products where Next.js improvements reduced reconciliation time by 43%.
2,900+ completed orders and 600+ registered customers on an eCommerce and CRM platform delivered with Next.js and Node.js.
92% faster order processing and 82% less manual work after workflow automation and backend optimization.
2,100+ catalog items, 5 user roles, and 3x higher operational capacity on SaaS
Across 870+ completed projects with our 90+ engineer team, we've built and deployed Python-based LLM and RAG systems for Fintech (fraud detection, automated KYC, financial intelligence), Healthcare (HIPAA-compliant AI pipelines, patient data retrieval, clinical NLP), SaaS (AI copilots, agent workflows, automated onboarding), and Enterprise (internal knowledge bases, document intelligence, multi-agent orchestration with LangGraph and n8n). With 40+ years of cross-industry AI experience, we align every Python, FastAPI, Kafka, and Kubernetes decision to your business outcome not just the tech spec.
๐ฅ 85+ completed projects (40+ SaaS & MVP platforms) delivered as a Full Stack Developer & React Developer
๐ฐ Startup MVP platforms generated $500K+ revenue in their first 6 months
๐ฅ SaaS products supporting 10Kโ50K active users built by an expert Full Stack Developer
๐ One platform grew from 2K to 7K users through continuous product updates by a Web Developer
โก Backend systems processing 300Kโ500K A
Send me a message with your idea or current setup whether it's a RAG pipeline, an LLM agent built with LangChain or LangGraph, a Python backend on FastAPI, or a full MLOps infrastructure on AWS, GCP, or Azure with Kubernetes and Docker. With 870+ projects completed and 40+ years of combined experience across Python, LLM, RAG, NLP, Kafka, Postgres, and n8n we move fast, take full ownership, and ship AI systems that work in production from day one.
๐ Whether as Python Full Stack Developer to ship a production-grade web app, a Python Developer AWS to deploy scalable microservices, a Python Full Stack Developer Flask expert to build modern backend-driven applications, or a Python AI Developer to wire up intelligent automations I deliver clean, reliable, maintainable solutions that solve real problems. If you're also searching for a solid web developer, full-stack developer I bring the same professional skills
๐ฉ Send me a message with your current setup - I'll tell you what's missing, what can be improved, and whether your AI system is ready for production.
HTML5
TypeScript
JavaScript
Angular
React
Vue.js
Node.js
PHP
AI App Development
SaaS
Tailwind CSS
API Integration
Python
Web Application
Machine Learning
Artificial Intelligence
SaaS Development
Laravel
API
Supabase
Viacheslav I.
Vienna, Austria
$30/hr
5.0
13 jobs
Senior Full-stack developer, 100% Job Success. I build features that work the first time and fix codebases that don't.
Stack:
Frontend: React, Next.js, TypeScript, JavaScript, HTML, CSS
Backend: Node.js, Python, NestJS, Express, REST APIs
Database: PostgreSQL, MongoDB, MySQL, Redis
Integrations: Stripe, Webhooks, OAuth, API Integration, Third-Party Integrations
DevOps: Docker, AWS, CI/CD, Git
Industries: SaaS, FinTech, Healthcare, Real Estate, E-commerce, Logistics
What I take on: new features, messy codebases that need real fixes not patches, third-party integrations (Stripe, CRMs, anything with an API), database work that holds up at scale, MVPs that ship fast without becoming a mess later.
Client feedback:
"I would highly recommend Softermii for any programming needs. I am consistently impressed by the quality of the work and team effort brought forth by everyone that we've worked with." โ VP of Product, Dollar Shave Club
"The team is really flexible with picking up urgent bugs. The prices are very reasonable and they are accessible even over the weekend." โ Managing Director, Co-Founder, TempTribe
Backed by a senior team at Softermii for larger scope. Send me your project.
Full Stack Development, React, Next.js, Node.js, TypeScript, JavaScript, Python, PostgreSQL, MongoDB, MySQL, Redis, Supabase, REST API Development, API Integration, Webhooks, OAuth, Stripe, Third-Party Integrations, SaaS Development, SaaS Architecture, MVP Development, Web Application, Full Stack Engineer, Backend Development, Frontend Development, NestJS, Express.js, GraphQL, Docker, AWS, CI/CD, Git, Microservices, Database Design, Role-Based Access Control, Multi-Tenant Architecture, Scalable Architecture, System Architecture, Code Review, Bug Fix, Existing Codebase, Technical Debt, Automation, Workflow Automation, AI Integration, LLM Integration, CRM Integration, Payment Integration, E-commerce, Marketplace Development, Booking System, Real-Time Application, WebSockets
Web Development
JavaScript
React
Node.js
PHP
API
HTML5
TypeScript
Python
Web Application
PostgreSQL
Full-Stack Development
CSS
Next.js
HTML
MySQL
AI Agent Development
API Integration
Amazon Web Services
AI App Development
Ajdin M.
Neuhofen an der Krems, Austria
$25/hr
5.0
1 jobs
๐ Front-End Developer | HTML, CSS, JavaScript, C# Expert
Hi there! I'm a passionate front-end developer who strongly focuses on creating user-friendly, responsive, and visually appealing websites. With 5 years of experience, I specialize in turning ideas into stunning digital experiences using HTML, CSS, JavaScript and C#.
What I Can Do for You:
Responsive Web Design: Ensure your website looks amazing and functions perfectly on all devices.
Custom Features & Interactivity: Add engaging, interactive features with JavaScript and modern libraries/frameworks.
Performance Optimization: Improve loading times and overall user experience through streamlined code and best practices.
Bug Fixes & Updates: Solve existing problems and keep your site up-to-date.
Why Work With Me?
โ Detail-oriented: Every line of code I write is clean, organized, and well-documented.
โ Reliable Communication: I keep you updated throughout the project, ensuring weโre always on the same page.
โ Timely Delivery: Deadlines are sacredโI deliver on time without compromising quality.
โ Commitment to Excellence: Your success is my top priority. Iโm not happy until you are thrilled with the results.
Tech Stack & Tools I Use:
Core Technologies: HTML5, CSS3, JavaScript,C#
Letโs Build Something Amazing Together!
Iโm here to bring your vision to life with top-notch front-end development. Whether you need a sleek landing page, a complete website overhaul, or just someone to solve tricky bugsโIโve got you covered. Feel free to send me a message so we can discuss your project.
Letโs make it happen! ๐
Proofreading
HTML5
CSS 3
JavaScript
C#
C++
Computer Skills
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