๐๐จ๐จ๐ค๐ข๐ง๐ ๐๐จ๐ซ ๐ ๐ ๐ฎ๐ฅ๐ฅ ๐๐ญ๐๐๐ค ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ ๐๐ฏ๐๐ข๐ฅ๐๐๐ฅ๐ ๐ข๐ง ๐ฒ๐จ๐ฎ๐ซ ๐ญ๐ข๐ฆ๐๐ณ๐จ๐ง๐ ๐๐ง๐ ๐ซ๐๐๐๐ฒ ๐๐จ๐ซ ๐ช๐ฎ๐ข๐๐ค ๐๐จ๐ฆ๐ฆ๐ฎ๐ง๐ข๐๐๐ญ๐ข๐จ๐ง ๐ก๐๐ฅ๐ฉ๐ข๐ง๐ ๐๐ฎ๐ฌ๐ข๐ง๐๐ฌ๐ฌ๐๐ฌ ๐ญ๐ฎ๐ซ๐ง ๐ข๐๐๐๐ฌ ๐ข๐ง๐ญ๐จ ๐๐๐ฌ๐ญ ๐ฌ๐๐๐ฅ๐๐๐ฅ๐ ๐ซ๐๐ฏ๐๐ง๐ฎ๐ ๐ ๐๐ง๐๐ซ๐๐ญ๐ข๐ง๐ ๐ฐ๐๐ ๐๐ฉ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง๐ฌ ๐ฐ๐ข๐ญ๐ก ๐จ๐ฏ๐๐ซ ๐ ๐ฒ๐๐๐ซ๐ฌ ๐จ๐ ๐๐ฑ๐ฉ๐๐ซ๐ข๐๐ง๐๐ ๐๐ฎ๐ข๐ฅ๐๐ข๐ง๐ ๐๐๐๐ ๐ฉ๐ซ๐จ๐๐ฎ๐๐ญ๐ฌ ๐ฐ๐๐ ๐๐ฉ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง๐ฌ ๐๐ง๐ ๐๐ ๐ฉ๐จ๐ฐ๐๐ซ๐๐ ๐ฌ๐ฒ๐ฌ๐ญ๐๐ฆ๐ฌ ๐๐จ๐ซ ๐ฌ๐ญ๐๐ซ๐ญ๐ฎ๐ฉ๐ฌ ๐๐ง๐ ๐๐ฎ๐ฌ๐ข๐ง๐๐ฌ๐ฌ๐๐ฌ
Full Stack Developer | SaaS, AI & Web Application Expert (5+ Years Experience)
๐ What I Can Help You Build
SaaS Applications & MVP Development
* Full Stack Web Applications
* AI Applications & Chatbots
* Business Automation Tools
* CRM & Third-Party API Integrations
* Admin Panels & Dashboards
* Booking & Reservation Systems
* E-Commerce Platforms
* Backend APIs & Microservices
* Application Optimization & Performance Improvements
๐ข Industries I Have Worked With
Healthcare
Appointment systems, patient management platforms, workflow automation systems
Education (EdTech
Learning management systems, course platforms, student dashboards
Real Estate (PropTech
Property listing platforms, booking systems, CRM integrations
E-Commerce
Order management systems, inventory control, marketplace integrations
SaaS & Startups
MVP development, scalable system architecture, product launch solutions
๐ผ What Clients Achieve Working With Me
* Faster product launch without unnecessary complexity
* Reduced operational costs through automation
* Replacement of manual processes with smart systems
* Improved user experience, retention, and conversions
* Scalable software built for long-term growth
๐ Core Tech Stack
Backend Development
PHP (Laravel), Python, Node.js
Frontend Development
React.js, JavaScript (ES6), HTML5, CSS3
Full Stack Architectures
MERN Stack (MongoDB, Express, React, Node.js)
MEAN Stack (MongoDB, Express, Angular, Node.js)
Databases
MySQL, PostgreSQL, MongoDB
AI & Automation
Python, AI APIs, workflow automation, web scraping, intelligent agents
API & Integrations
REST APIs, payment gateways, CRM systems, third-party integrations
๐ฉ Letโs Work Together
If you're looking for a reliable Full Stack Developer to build or scale your product, I am available in your timezone and ready for quick communication.
Letโs turn your idea into a scalable, high-performance software product.
๐ Relevant Keywords
Full Stack Developer || SaaS Developer || Web Application Developer || AI Developer || Backend Developer || Frontend Developer || Laravel Developer || React Developer || Node.js Developer || Python Developer || MERN Stack Developer || MEAN Stack Developer || API Developer || REST API Development || CRM Integration Developer || Payment Gateway Integration || Booking System Developer || E-Commerce Developer || Dashboard Developer || Admin Panel Developer || Automation Developer || Business Automation Expert || AI Chatbot Developer || MVP Developer || Startup Developer || Scalable Web Applications || Software Engineer || Database Design || MySQL Expert || PostgreSQL Expert || MongoDB Expert || Performance Optimization || Web App Speed Optimization
API Integration
Full-Stack Development
PHP
HTML
CSS
JavaScript
Python
React
MERN Stack
React Native
Custom PHP
Python Script
Django
PHP Script
Bootstrap
MySQL
SaaS
SaaS Development
Minimum Viable Product
CodeIgniter
Yuri C.
Berlin, Germany
$35/hr
5.0
4 jobs
An experienced software engineer developing with Golang, Ruby, and Vue.JS
Received 5-star ratings for all completed projects. Consistently deliver high-quality work
Software Development
JavaScript
Vue.js
Ruby on Rails
Database Design
PostgreSQL
Ruby
Golang
Microservice
Docker
Safi Ullah A.
Berlin, Germany
$45/hr
4.6
24 jobs
๐ A 100% refund if I set the wrong expectation and canโt deliver. No questions asked!
๐ Upwork certified Full Stack Developer
๐ Top Rated (Among Top 10% talent on Upwork)
๐ 150M+ Active users on my developed Web Apps
๐ 8+ Years of Hands-on Experience
โ 300+ Websites Designed and Developed
โ Expert in React/Next.js/Nest.js, Vue.js
โ Expert in Full-Stack Development MEAN/MERN
โ Expert in Webflow, Bubble, Retool
โ Expert in Figma, UI/UX Design & Development
โ Excellent Communication and Project Management Skills
โ Custom Rag system, LLMs
โ Model fine tuning, gpt functions to get exact output.
*** Available for RUSH projects ***
I have experience with the following industries:
๐ฐ Fintech: Scalable financial platforms with real-time data
๐ฅ Healthcare: HIPAA-compliant patient management and telemedicine
๐ Logistics: Real-time tracking and fleet management
โ๏ธ TravelTech: Booking systems and travel management tools
๐ Cybersecurity: Secure applications and data protection
๐พ Agricultural industry
๐ฉโโ๏ธ eCommerce
FRONT-END SKILLS
HTML 5, CSS 3, JavaScript, TypeScript/ECMAScript, React.js, Nuxt.js, Gatsby.js, Flexbox, SCSS, SaaS, Bootstrap, Tailwind and Material-UI
BACK-END SKILLS
Node.js, Next.js, PHP, Python, Java, Ruby, Express, RESTful API and GraphQL
FRAMEWORKS
Gatsby.js, Angular, Express CMS, React, Vue.Js Strapi CMS, ContentStack Version Control System: GitHub, GitLab
๐๐๐:
โ WordPress, Webflow, Shopify, WooCommerce, Wix, Retool, Bubble.io
COMMUNICATION AND SOFTWARE MANAGEMENT TOOLS
Slack, Discord, JIRA, Asana, Trello, Monday, Clickup, Zoho and Basecamp
โฎ Worked with German unicorn companies
โฎ Available 18 hours a day
BOOK A 30-MIN CONSULTATION
Interested in discussing you project details with me? You are one click away from making the next web solution for your business. Message me and book a 30-Min Consultation Call. I'll be happy to provide you the technical project plan, time estimate and overall cost.
ABOUT ME
I am a proficient web developer with a strong focus on React and the MERN stack, and a knack for creating seamless user experiences. Leveraging my expertise in building dynamic and responsive web applications, I specialize in crafting high-performance, data-driven solutions. With a keen eye for design and overall user-experience, I seamlessly bridge the gap between aesthetics and functionality, delivering visually appealing, user-friendly web solutions. My skills in front-end and back-end development, combined with my proficiency in React / React Native / Node.js / MongoDB / Express / DevOps / GPT and LLM apps development make me a valuable asset in delivering cutting-edge web solutions.
Over the course of my 8+ years of professional experience, my enthusiasm for technology and programming has only grown, driving me to solve complex technical challenges and come up with innovative solutions.
๐๐จ๐ญ ๐ญ๐ก๐ ๐๐ข๐ ๐ก๐ญ ๐ ๐ข๐ญ ๐๐:
โ Your business operates in industries like betting or adult entertainment.
โ You donโt value open communication and collaboration throughout the development process.
โ Mutual respect is not important to you in a working relationship.
๐ ๐ข๐ง๐ ๐ฆ๐ ๐ฐ๐ข๐ญ๐ก ๐ญ๐ก๐ ๐ค๐๐ฒ ๐ฐ๐จ๐ซ๐๐ฌ ๐๐๐ฅ๐จ๐ฐ: API, RESTful API, API Integration, AWS Lambda, Amazon Web Services, Docker, Git, Agile Software Development, Python, JavaScript, ECMAScript, TypeScript, jQuery, AngularJS, React, Redux, Next.js, ExpressJS, Node.js, Prisma, PostgreSQL, SQL, CSS, CSS3, Sass, Tailwind CSS, HTML, HTML5, Template Markup, Mobile App Development, React Native, iOS, iOS Development, Android, Android App Development, Web Development, Web Application, Website, Web Design, Graphic Design, UI/UX Prototyping, User Authentication, Search Engine Optimization, Social Media Account Integration, Chat & Messaging Software, Twilio API, Expo.io, Landing Page, comfy, polotno, Artificial Intelligence.
Web Development
TypeScript
React
Next.js
Node.js
ExpressJS
Tailwind CSS
JavaScript
Full-Stack Development
Web Design
MERN Stack
Back-End Development
Front-End Development
React Native
Shopify
Svyatoslav M.
Berlin, Germany
$41/hr
5.0
47 jobs
Hi! I'm a Senior Generative AI & Full-Stack Engineer with 15+ years of experience specializing in building production-ready AI applications, Custom Chatbots, and Multi-Agent systems adhering to EU AI Act Compliance.
Are you looking to bridge the gap between advanced Artificial Intelligence and a robust, production-ready web architecture? I deliver scalable, secure, and smart technical solutions that turn complex business ideas into high-performing digital products.
I combine deep expertise in foundational backend/frontend stacks with cutting-edge Generative AI engineering. Whether you need an autonomous AI Agent framework, a high-accuracy RAG pipeline, or a complex enterprise web application, I handle everything from core architecture to seamless UI deployment.
Please look at my portfolio below to see my "ML-Based Price Recommendation System", "AI-Powered HR Application Full Stack Development", "Full-Stack Developer For Custom ERP", and many others.
Core AI & Machine Learning Expertise:
- Large Language Models (LLMs): Custom integration, API optimization, and fine-tuning with OpenAI, LLaMA, Claude, etc.
- Advanced RAG Systems: Building intelligent Retrieval-Augmented Generation architectures to connect LLMs with private corporate data sources, minimizing hallucinations.
- AI Agents & Conversational Systems: Development of autonomous multi-agent workflows, AI chatbots, smart routing systems, and NLP tools (LangChain, LlamaIndex).
Robust Full-Stack Stack:
- Backend: Node.js, Express.js, PHP (Laravel, Yii), Python, API Integration, and high-load architecture.
- Frontend: React.js, Next.js, and modern JavaScript for intuitive, interactive AI user interfaces.
- Databases & Cloud: Vector databases (Pinecone, Chroma), PostgreSQL, MySQL, and secure cloud deployment via Amazon Web Services (AWS Partner & Certified Cloud Practitioner) and GCP.
Why Work With Me:
- 100% Job Success & Top Rated Plus: A proven track record of delivering clean code, meeting strict deadlines, and maintaining clear communication.
- Business-Centric Approach: I don't just write code; I design systems that optimize internal workflows, improve user retention, and cut operational costs.
- Agile Integration: backed by the engineering strength of the Greenice team, allowing for rapid scaling if your project requires additional resources.
Letโs turn your vision into a production-ready application. Click the "Invite to Job" button, and letโs discuss the technical architecture of your project!
Machine Learning
Artificial Intelligence
Python
Deep Learning
Amazon Web Services
React
Data Science
Node.js
Natural Language Processing
Artificial Neural Network
SQL
JavaScript
Git
CSS 3
PHP
Computer Vision
TensorFlow
Neural Network
Supervised Learning
Unsupervised Learning
Anas I.
Berlin, Germany
$50/hr
5.0
28 jobs
Security & compliance lead for SaaS and fintech. SOC 2, ISO 27001, pentesting, and fractional vCISO โ so security closes enterprise deals instead of blocking them.
I'm an Information Security Lead with 10+ years securing SaaS end-to-end. By day I run AppSec and cloud security at a global B2B SaaS unicorn. On Upwork, I bring that same rigor to founders, CTOs, and security leads who need to get audit-ready โ fast.
OSCP ยท CCNSE ยท CDP | Top Rated | 100% JSS | 25+ five-star reviews | 100+ apps pentested
What I deliver:
โ SOC 2 & ISO 27001 audit readiness (4โ8 weeks): gap analysis, 15+ policies, risk assessment, evidence collection, vendor reviews, auditor handoff. Vanta, Drata, Sprinto, Secureframe, Thoropass.
โ Pentesting (1โ2 weeks): OWASP-aligned web, mobile, API. Developer-friendly report with repro steps, CVSS, business impact, and remediation. Attestation letter + free retest included.
โ Fractional vCISO (retainer): security questionnaires, vendor reviews, board reporting, AWS/Azure/GCP posture, IR readiness, continuous compliance.
Best fit if you're: prepping your first SOC 2 or ISO 27001 audit, losing enterprise deals on security questionnaires, stuck inside Vanta/Drata without knowing what to upload, or scaling on AWS and need a security baseline โ without paying $250k for a full-time CISO.
Frameworks: SOC 2, ISO 27001:2022, NIST CSF, NIST 800-53, PCI DSS, GDPR, HIPAA, OWASP ASVS/MASVS, CIS Benchmarks.
Stack: Burp Suite Pro, Nuclei, AWS Security Hub/GuardDuty, Terraform, GitHub Actions, Snyk, SAST/DAST/SCA, Python.
Next step: send your scope or just describe where you're stuck. Within 24 hours you'll get a fixed-price quote, SOW, and timeline. If I'm not the right fit, I'll tell you who is.
Vulnerability Assessment
Kali Linux
Penetration Testing
Application Security
Business with 10-99 Employees
Information Security
Amazon Web Services
Security Analysis
Linux
Mobile App Testing
Security Engineering
Web Application Security
Information Security Audit
Python
Website Security
Ethical Hacking
Pavel O.
Berlin, Germany
$39/hr
4.8
128 jobs
๐ผ Python Developer | Python Django | Python Web Scraping | Python Full Stack Developer | Python AI | Python Automation
๐ TOP RATED PLUS | ๐ฐ $5M+ Client Revenue | ๐ผ 111+ Projects Delivered | โ 11,000+ Upwork Hours
๐ก Clients Achieved:
๐ Raised $4.9M+ / $9.4M+ / $6M+ after product development
๐ Scaled platforms to millions of users & billions of operations
โก Reduced system load & response time with optimized Python architectures
๐ฐ Automated payments, workflows, and analytics โ higher ROI & efficiency
๐ฅ Built secure, compliant systems (HIPAA, GDPR) used by global organizations
I am a Python Developer, Python Full Stack Developer, Python AI Developer, and Python AI Engineer with 10+ years of experience building scalable web platforms, SaaS products, AI systems, and high-performance backend architectures. As a Python Developer, I specialize in designing clean architecture, scalable systems, performance optimization, and production-ready solutions that support real business growth.
I work as a Python Full Stack Developer (Python + React / Next.js), combining powerful backend engineering with modern frontend development to deliver complete end-to-end applications. My expertise includes Python Django development, Flask development, and FastAPI development, building robust APIs, microservices, and distributed systems.
I am also a Python Automation Engineer and Python Web Scraping Specialist, building intelligent automation systems, data extraction pipelines, and large-scale Python web scraping solutions for business intelligence, analytics, and AI-driven data processing. I design reliable scraping architectures that handle complex, high-volume data at scale.
As a Python AI Developer, I build AI-powered applications, NLP systems, automation workflows, and data-driven intelligent platforms integrated with modern Python frameworks and cloud infrastructure.
โก Core Expertise as a Python Developer
Python Full Stack Development (Python + React / Next.js)
Python Django Developer, Flask Developer, FastAPI Developer
Python AI Development & Machine Learning Integration
Python Automation Engineering for business workflows
Python Web Scraping & Data Extraction Systems
Scalable backend systems, APIs, and microservices
Cloud & DevOps (AWS, Docker, CI/CD pipelines)
High-performance, production-grade Python systems
๐ Selected Projects
The Skills ($4.9M raised) ๐ โ Built and scaled an e-learning platform with payments, subscriptions, and mobile apps. As a Python Developer, helped launch a product used by thousands of users worldwide.
Veeqo (acquired by Amazon) ๐ฆ โ Developed retail infrastructure processing ยฃ1B+ in orders. Optimized backend performance, integrated Stripe, and reduced server load using AWS Lambda as a Python Developer.
Creyos (75K+ users, healthcare) ๐ฅ โ Built a HIPAA-compliant cognitive assessment platform used by global research institutions. As a Python Developer, worked on secure data systems, scaling, and performance.
CityFALCON ($6M raised) ๐ โ Created a real-time NLP-powered financial news platform processing millions of articles daily. Designed scalable backend architecture as a Python Developer.
โก What I Deliver as a Python Developer
Clean, scalable Python AI systems and backend architectures
High-performance Python Django / Flask / FastAPI applications
Python Full Stack Development (React / Next.js integration)
Python Automation & Python Web Scraping solutions
AI-powered Python applications and intelligent workflows
Secure, compliant systems (GDPR, HIPAA-ready architectures)
End-to-end product delivery from idea to production
Client Testimonials
โญโญโญโญโญ โVery professional! Pleasure to work with. Will definitely use again.โ
โญโญโญโญโญ โSuper reliable, fast, and with clean, well-structured code. Communication was smooth and always on time.โ
โญโญโญโญโญ โVery satisfied with the work.โ
๐ผ Why Clients Work With Me
10+ years of proven experience as a Python Developer
Strong expertise in Python Full Stack, Python AI, and Python Web Scraping
Ability to scale systems from MVP to enterprise-level platforms
Deep understanding of backend architecture and system design
Reliable communication and predictable delivery
๐ Letโs talk about your project - I am available as your Python Developer, Python Full Stack Developer AI React, Python AI Developer, Python Automation Engineer, Python Django Developer, and Python Web Scraping Specialist.
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
โUpwork provides an umbrella-level of security. I can see a talentโs work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.โ
KD
Kim Darling
Emerald Tiger
โUpwork 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.โ
DM
David Merry
Kinetic Investments
โOur very specific requirements can be a challengeโWith Upwork, weโre able to access a bigger community to ensure the success of our projects.โ
KK
Katja Krohn
Summa Linguae
How do I hire a API Developer in Germany on Upwork?
You can hire a API Developer in Germany on Upwork in four simple steps:
Create a job post tailored to your API Developer project scope. We'll walk you through the process step by step.
Browse top API Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top API Developer profiles and interview.
Hire the right API 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 API Developer?
Rates charged by API 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 API Developer in Germany on Upwork?
As the world's work marketplace, we connect highly-skilled freelance API Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream API Developer team you need to succeed.
Can I hire a API 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 API Developer proposals within 24 hours of posting a job description.