As an experienced Full-Stack Developer with over 8 years of industry expertise, I have refined my skills to deliver robust and cutting-edge web applications that cater to a diverse range of business needs. My specialization lies in creating dynamic and scalable backend solutions using Ruby on Rails, paired with compelling and responsive frontend interfaces leveraging React.js, Next.js, and Vue.js.
My journey through the rapidly evolving tech landscape has equipped me with a profound understanding of building applications from the ground up – ensuring they are not only functional but also maintainable and future-proof. I have a proven track record of deploying complex applications with refined workflows on platforms like Heroku, Kubernetes on Google Cloud Platform, and AWS services including Lambda, EC2, and ECR, all synergizing with Docker to ensure seamless operation across different environments.
With a meticulous eye for detail, I approach each project with the goal of ensuring that every line of code not only meets but exceeds industry standards. Whether working independently or as part of a team, I thrive in environments that challenge me to deliver solutions that drive tangible business value. My unwavering commitment to professional growth means I stay abreast of the latest technological innovations, integrating them into my workflow for the benefit of my clients.
For your next project that requires expert navigation of both frontend and backend paradigms, and demands a dependable, communicative, and creative developer, I am here to translate your vision into a tangible, efficient, and impactful web presence.
React
JavaScript
Ruby on Rails
Ruby
Vue.js
PostgreSQL
Git
CSS
Next.js
HTML5
Heroku
RSpec
Chatbot
Görkem S.
Egenhausen, Germany
$25/hr
5.0
27 jobs
“Trying to cut dev costs by hiring cheap is like trying to win Le Mans with a flat tire.” – A SaaS Founder Who Learned the Hard Way
As you are browsing Upwork, comparing profiles, and filtering through flashy buzzwords, here’s what you’re really looking for: Not just a command line developer — but a strategic partner who understands product, speed, and scale.
Hiring the wrong dev? That means technical debt, delayed timelines, and missed market opportunities. But hiring the right one? That’s how MVPs get shipped, systems scale, and startups win.
Why Work With Me? (CTO-Turned-SaaS Builder | 5+ Years Leadership)
As a former CTO and founder of a fast-scaling SaaS company, I don’t just “write code.” I think like a founder, execute like a senior engineer, and deliver like a growth-obsessed partner.
✅ I own the outcome — whether it's a scrappy MVP, an investor-ready demo, or a rock-solid enterprise platform.
✅ I speak both product and tech, which means no translation layers, no fluff, and no micromanaging required.
✅ I challenge assumptions. If your feature roadmap is bloated, or your architecture is fragile, I’ll tell you. Fast.
My Approach to Development Success
🔹 Business-First Thinking – Every feature ties back to revenue, retention, or speed-to-market.
🔹 Rapid Prototyping – Build fast. Test fast. Learn faster.
🔹 Scalable Architecture – Clean, modular codebases ready for growth.
🔹 Transparent Communication – Clear daily/weekly updates with zero guesswork.
🔹 Product-Minded Execution – I’ll challenge ideas, offer UX advice, and look at your app like a real user would.
Full-Stack Services I Deliver
📌 MVP Development & Launch Readiness
📌 React.js & Next.js Frontend Systems
📌 Node.js / Express / MongoDB APIs
📌 Stripe, Lemonway, Hubtel Integrations
📌 Admin Panels & CRM Dashboards
📌 Scalable SaaS Architecture
📌 Third-party Integrations & Automation
📌 App Optimization & Refactors
📌 KYC Flows, Auth, Multi-Tenancy, GDPR Compliance
📌 Project Rescue & Tech Debt Reduction
Industries I’ve Helped Build In
🧠 AI SaaS Tools
📦 E-commerce SaaS & Marketplaces
⚖️ LegalTech & FinTech Platforms
📞 Voicebot & Call Routing Systems
🏥 Medical & 3D Scan Integration Platforms
🎮 Esports & Tournament Systems
🌍 Equity Crowdfunding & Investor Platforms
🏠 Real Estate CRM & Lead Funnels
Why Clients Stick With Me
✅ Founder-Level Thinking – I treat your product like my own
✅ 100% Reliable – You’ll never wonder where your dev went
✅ Startup-Savvy – I know what breaks, what scales, and what matters
✅ No Ego – Just clean, maintainable, production-ready code
✅ Limited Clients – I only take on a few projects to give each my full attention
Still comparing devs? Cool — I would too if I were you.
But before you go, here’s the truth: most developers code. Few understand why they’re building what they build.
If you’re serious about launching a high-impact web app, and want a partner who gets both the product and the code — let’s talk.
Limited Availability – Book Early.
Let’s turn your vision into reality, together.
React
JavaScript
TypeScript
MERN Stack
SaaS Development
Web Application
Web Development
Back-End Development
Node.js
Full-Stack Development
Front-End Development
Farhan R.
Leipzig, Germany
$30/hr
5.0
33 jobs
🏆 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 | 𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿
🚀 𝗠𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀:
► 𝗧𝗲𝗺𝗽𝗹𝗮𝘁𝗲 𝘁𝗼 𝗪𝗲𝗯𝘀𝗶𝘁𝗲 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗶𝗼𝗻: Convert design files (XD, PSD, Sketch, Figma, Zeplin) into fully functional themes for Shopify/Shopify Plus, WordPress, BigCommerce, React, or any platform.
► 𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Custom theme development and customization, Shopify Plus, app integration, and enhancing your store’s functionality.
► 𝗥𝗲𝗮𝗰𝘁/𝗩𝘂𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Build dynamic and modern web applications with API integrations using React, Redux, Next.js, or Vue.js.
► 𝗪𝗲𝗯𝘀𝗶𝘁𝗲 𝗗𝗲𝘀𝗶𝗴𝗻: Craft visually engaging designs for Shopify and WordPress websites using tools like Figma, Adobe XD, Photoshop, etc.
► 𝗧𝗿𝗼𝘂𝗯𝗹𝗲𝘀𝗵𝗼𝗼𝘁𝗶𝗻𝗴 & 𝗕𝘂𝗴 𝗙𝗶𝘅𝗲𝘀: Resolve errors, technical issues, and performance problems on your Shopify store or WordPress website.
► 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: Write compelling product descriptions, upload products, and optimize your catalog for better engagement and sales.
► 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗠𝗶𝗴𝗿𝗮𝘁𝗶𝗼𝗻: Seamlessly transfer your store from any platform to Shopify or WordPress while ensuring all features remain functional.
► 𝗖𝘂𝘀𝘁𝗼𝗺 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: Develop tailored functionalities, including subscription flows for recurring products and integrations like Klaviyo email marketing.
► 𝗡𝗲𝘄 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 𝗳𝗼𝗿 𝗦𝘁𝗼𝗿𝗲𝘀: Add custom sections and new features to elevate your Shopify or WordPress store's functionality.
► 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Build robust user interfaces using HTML5, CSS3, Bootstrap, jQuery, JavaScript, and modern frameworks like React, Redux, or Vue.js.
► 𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Custom WordPress themes, plugin development, and website customization to suit your business needs.
► 𝗛𝗧𝗠𝗟 𝘁𝗼 𝗖𝗠𝗦 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗶𝗼𝗻: Transform static HTML templates into responsive Shopify or WordPress websites with ease.
► 𝗘𝗹𝗲𝗺𝗲𝗻𝘁𝗼𝗿 & 𝗣𝗮𝗴𝗲 𝗕𝘂𝗶𝗹𝗱𝗲𝗿𝘀: Create stunning WordPress pages using Elementor or any other popular page builder.
As a Full-stack Web Development specialist, I have experience in all stages of web project development. My particular interest lies in designing and developing e-commerce websites, and I have over 8 years of experience in this field. I possess a range of technical skills including HTML5, CSS3, PHP, Bootstrap, jQuery, JavaScript, React, Redux, Vue, and am proficient in software applications such as Adobe Photoshop, XD, Figma, and CMS platforms including Shopify, WordPress, Laravel, BigCommerce and Squarespace.
I am dedicated to delivering responsive and visually appealing websites that meet the unique needs of my clients.
If you're looking for top-quality websites that will increase leads, make life easier and build on your brand identity, you've come to the right place.
🌟 𝗟𝗲𝘁’𝘀 𝗖𝗼𝗻𝗻𝗲𝗰𝘁: Send me a message and let’s discuss your project. My goal is to deliver the best possible results for you.
Keywords:
Shopify Developer, Shopify Frontend Developer, Shopify Theme Developer, Shopify Plus Developer, Shopify Expert, Shopify Liquid Developer, Shopify Custom Theme, Shopify Theme Customization, Shopify Store Development, Shopify Speed Optimization, Shopify UX Developer, Shopify CRO Expert, Frontend Developer, Frontend Engineer, Web Frontend Development, HTML5, CSS3, JavaScript, Responsive Web Design, UI Developer, UX Implementation, Mobile-First Design, Clean UI Development, Performance Optimization, Figma to Shopify, Figma to HTML, Figma to React, PSD to Shopify, XD to Shopify, Sketch to Shopify, Design to Code, Pixel-Perfect Development, UI Design Implementation, React Developer, Next.js Developer, React Frontend Developer, Vue.js Developer, SPA Development, API Integration Frontend, Ecommerce Developer, DTC Shopify Developer, Conversion Rate Optimization, Shopify AOV Optimization, Shopify UX Optimization, Shopify PDP Optimization, Shopify Collection Page Optimization, Mega Menu Development, Navigation UX Optimization, Core Web Vitals, LCP Optimization, Shopify Performance, Lazy Loading, Asset Optimization, Render Blocking Fixes, Klaviyo Integration, Subscription Flow Development, Shopify App Integration, Custom Shopify Sections, Dynamic Product Pages, Shopify Bundles, Frequently Bought Together, WordPress Developer, WordPress Theme Development, Elementor Expert, HTML to WordPress, CMS Development, Top Rated Shopify Developer, Long-Term Shopify Support, Ongoing Shopify Maintenance, Freelance Shopify Developer, Remote Shopify Developer, Stand-by Shopify Developer, BigCommerce, Bigcommerce developer, BigCommerce development
React
Redux
Front-End Development
Next.js
WordPress
Vue.js
Adobe Photoshop
Bootstrap
Web Development
Laravel
Web Design
Shopify
Software Development
CMS Development
Adobe XD
NIMISHA K.
Berlin, Germany
$15/hr
5.0
4 jobs
👋 Hi! I'm Nimi.
Data tells a story—and I help businesses turn that story into smarter decisions, better products, and measurable growth.
I'm a Data Scientist, Data Analyst, and Full Stack Developer with 7+ years of software development experience and a Master's in Data Science. I specialize in transforming raw, complex data into valuable insights, predictive models, interactive dashboards, and AI-powered applications that solve real business problems.
Unlike most freelancers who only build software or only analyze data, I bridge both worlds. I can collect, clean, analyze, visualize, and model your data—and then build the complete web application or dashboard that brings those insights to life.
📊 Data Science & Analytics Services
✔ Data Cleaning & Preprocessing
✔ Exploratory Data Analysis (EDA)
✔ SQL Queries & Database Analysis
✔ Python (Pandas, NumPy)
✔ Machine Learning Models (Scikit-learn)
✔ Predictive Analytics
✔ Classification & Regression Models
✔ Customer Segmentation
✔ Churn Prediction
✔ Sales & Business Analytics
✔ Statistical Analysis
✔ Feature Engineering
✔ Data Visualization (Power BI, Tableau, Matplotlib, Plotly)
✔ Interactive Dashboards & KPI Reporting
✔ Business Intelligence Solutions
✔ AI & Machine Learning Integration
💻 Full Stack Development
✔ React.js, Next.js
✔ Node.js & Express.js
✔ Django, Flask & FastAPI
✔ REST APIs & GraphQL
✔ PostgreSQL, MySQL & MongoDB
✔ Responsive UI/UX Development
✔ Flutter Mobile Applications
🌟 Why Clients Work With Me
✅ I don't just build software—I solve business problems using data.
✅ Every dashboard, model, and application is designed to provide clear insights and measurable value.
✅ I write clean, scalable, production-ready code that is easy to maintain.
✅ I communicate clearly, meet deadlines, and focus on delivering results—not just completing tasks.
Whether you need a Data Analyst to uncover trends, a Data Scientist to build predictive models, a Power BI dashboard for executive reporting, or a Full Stack Developer to build an end-to-end data-driven application, I can deliver a complete solution from data collection to deployment.
📩 If you're looking for someone who combines analytics, machine learning, AI, and full-stack development to build intelligent, data-driven products, let's connect. I'd love to help bring your project to life.
React
JavaScript
Online Multiplayer
Unity
TypeScript
MySQL
Node.js
MongoDB
HTML
Tailwind CSS
Next.js
AWS Lambda
Firebase
Amazon EC2
Sekisambu A.
Hamburg, Germany
$45/hr
4.9
21 jobs
Hey There! Ready to Crush Your Project Goals? 🚀
Looking for a Technical Product Manager with the experience to get things done, a dash of humor to keep things light, and a knack for delivering results? Look no further!
About Me:
I'm your go-to Top-Rated Freelancer with 100% job success, armed with over 5 years of hands-on experience in Agile product management. Serious about work but never too serious to crack a joke (or two), I bring a refreshing approach to the table.
My Game Plan:
My product management playbook is simple yet effective: Rock-solid communication, teamwork vibes, and a relentless pursuit of excellence. I firmly believe that transparency, collaboration, and a positive mindset are the secret sauce for project success.
Why Choose Me:
Seasoned Pro: With 5 years under my belt, I've seen it all and conquered it all. Your projects are in safe hands.
Results-Driven: I'm all about nailing those project goals. Your unique requirements become my mission, and I'm here to make sure they're not just met but exceeded.
End-to-End Support: From brainstorming your product's inception to celebrating its successful delivery, I've got you covered every step of the way.
Adaptability: Whether you're a trailblazing startup or a corporate giant, I can flex to match your needs and objectives seamlessly.
Let's Dive In:
Ready to dive into your product adventure? Let's collaborate and make some magic happen. I'm here to lead your product to greatness while ensuring a work atmosphere that's both pro and fun. Reach out today, and let's chat about how I can steer your project ship to success!
React Native
React
JavaScript
Agile Project Management
Jira
Web Design
Product Design
UI/UX Prototyping
HTML5
Agile Software Development
CSS 3
Next.js
Product Management
TypeScript
Prototyping
Hewad M.
Mainz, Germany
$45/hr
5.0
10 jobs
Fullstack Developer with 5+ years of experience with Typescript, React.js, React Native and Node.js
React Native
React
JavaScript
TypeScript
Node.js
How it works
Post a job for freePost a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
“Upwork provides an umbrella-level of security. I can see a talent’s work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.”
KD
Kim Darling
Emerald Tiger
“Upwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.”
DM
David Merry
Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
Top interview questions to help you hire the right React.js developers, faster.
How do I hire a React.js Developer in Germany on Upwork?
You can hire a React.js Developer in Germany on Upwork in four simple steps:
Create a job post tailored to your React.js Developer project scope. We'll walk you through the process step by step.
Browse top React.js Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top React.js Developer profiles and interview.
Hire the right React.js Developer for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a React.js Developer?
Rates charged by React.js Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a React.js Developer in Germany on Upwork?
As the world's work marketplace, we connect highly-skilled freelance React.js Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream React.js Developer team you need to succeed.
Can I hire a React.js Developer in Germany within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive React.js Developer proposals within 24 hours of posting a job description.