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👋 Looking for a powerhouse full-stack engineer who can bridge Python-based AI innovation with Java-backed enterprise performance?
I bring 25+ years of professional full stack software development experience-combining backend architecture, enterprise Java systems, AI/ML engineering, and modern frontend frameworks into scalable, data-rich applications for finance, healthcare, retail, manufacturing, and government sectors.
With over 100 full-stack systems delivered, I've built mission-critical platforms and real-time analytics engines handling millions of events per day, while reducing operational costs by up to 65% through infrastructure optimization.
🏆 Why Work With Me?
✔️ 25+ years of enterprise-grade software development
✔️ 40+ Python projects using AI/ML for analytics, automation, and computer vision
✔️ 60+ Java systems modernized to Spring Boot, AWS & microservices
✔️ Built backend systems serving 10M+ users monthly
✔️ AI-based fraud detection systems with 98%+ accuracy
✔️ Scaled apps to handle 1M+ real-time events/second using Kafka, EventBridge, and Spark
✔️ Healthcare-grade imaging tools for tumor classification (TensorFlow + OpenCV)
✔️ 50+ legacy migrations from J2EE/Struts to microservices
✔️ Deployed full-stack apps across 20+ industries, including fintech, eCommerce, telecom, and eLearning
✔️ CI/CD pipelines & Dockerized monorepos for faster dev cycles and better team velocity
🧠 Tech Stack & Core Skills
🖥️ Languages:
Python, Java, TypeScript, JavaScript, HTML5, CSS3, SQL, Shell Scripting
🧠 Python AI/ML & Automation:
TensorFlow, PyTorch, OpenCV, Scikit-learn, NumPy, Pandas, Matplotlib
AI Workflows | Computer Vision | Predictive Analytics | Data Pipelines | Image Recognition | Fraud Detection
Automation using Python + Selenium, BeautifulSoup, Scrapy
☕ Java Enterprise Stack:
Spring Boot, Spring Cloud, Hibernate, Akka, Play, Grails
Java Microservices | RESTful APIs | SOAP | JMS | JPA | Quartz | Lombok
Legacy Refactoring | J2EE → Spring Boot | Tomcat | WildFly | WebLogic
📊 Frontend (Full-stack Scope):
Angular.js, Vue.js, React.js, Next.js, Svelte
Tailwind, Bootstrap, Material-UI | JSP | Thymeleaf | JSF | EJS
SPA Development | SSR/ISR | Responsive UI | Webpack, Vite, Gulp
📦 DevOps & Cloud:
Docker, Kubernetes, AWS (Lambda, SageMaker, EC2, S3, Kinesis, RDS), GCP, Azure
CI/CD: Jenkins, GitLab CI, Travis, Ansible, Terraform
Infrastructure as Code | Monitoring | Cost Optimization
📚 Data & Databases:
PostgreSQL, MySQL, Oracle, MSSQL, SQLite, MongoDB, Cassandra, Dynamo DB
Elasticsearch, Redis, Kafka, RabbitMQ, GraphQL, REST APIs
📌 Python & AI-Focused Solutions
🔹 AI-Based Automation for Workflow Optimization
🔹 Real-Time Object Recognition & Computer Vision Systems
🔹 Predictive Analytics for Retail, Logistics, and Healthcare
🔹 NLP Chatbots and Intelligent Assistants
🔹 Data Crawlers & Scrapers for eCommerce & SEO
🔹 Data Normalization Pipelines Handling 1TB+ Datasets
📌 Java & Enterprise Software Development
🔹 Full-stack Java + Angular/Vue platforms
🔹 Spring Boot Microservices for Finance, Healthcare, SaaS
🔹 Event-Driven Architectures with Kafka & Redis
🔹 Secure Auth (JWT, OAuth2, LDAP, SSO, 2FA)
🔹 Migrating Monoliths to Microservices (Cloud-Native Refactors)
🔹 Server-Side Java with JSP, JSF, and Servlet APIs
📌 Full-stack Projects Built from Scratch
🔹 Inventory Management System (Java + Vue + AWS)
🔹 Medical Diagnosis Dashboard (Python + Django + React)
🔹 Financial Fraud Detection Engine (PyTorch + Kafka)
🔹 Real Estate Listing Platform (Flask + Angular + PostgreSQL)
🔹 ERP Extensions for Manufacturing (Spring Boot + Thymeleaf)
💬 Results That Matter
✅ Built an AI-based inventory forecasting engine reducing stock outs by 42%
✅ Scaled a Java backend to handle 5M+ daily requests for a logistics app
✅ Migrated 3 legacy apps to AWS with 65% infra cost reduction
✅ Automated scraping workflows gathering 10M+ data points weekly
✅ Designed OCR pipeline (Python + Tesseract) for medical record digitization
✅ Delivered HIPAA-compliant image analysis tools with 95%+ detection accuracy
✅ Cut fraud risk 75% for fintech app using real-time anomaly detection
💼 Industries Served
🏥 Healthcare & Diagnostics
💳 Fintech & Insurance
🛍️ eCommerce & Dropshipping
🏗️ Manufacturing & Supply Chain
📚 EdTech & LMS Platforms
🛰️ Gov & Aerospace (including secure environments)
🏢 Enterprise SaaS & Internal Tools
Let’s build the next enterprise success story together.
💬 Message me to discuss your backend, AI/ML, or full-stack project!
🧩 Let’s Build Something Powerful
If you’re seeking a seasoned backend + full-stack expert who can turn complex business logic into reliable, scalable, and secure digital solutions - I’m your guy.
----------------------
Associated with
Ixobit Corporation (DBA Sibers)
$20M+
earned
$40/hr
100%
Job Success
$60K+ earned
Offers consultations
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Most AI projects fail because the infrastructure around them wasn't built to last. I'm an AI developer and Python developer who fixes that. I build RAG pipelines, AI Agent systems, and the backend architecture they need to actually run in production.
When a project demands it, I bring in a trusted Python developer I've worked with long-term. Having a second Python developer and a second AI developer on call means you get the output of a full team without the overhead of managing one.
1. AI Systems That Go Beyond the Prototype
As an AI developer, I design and implement custom RAG (Retrieval-Augmented Generation) pipelines that ground your LLMs in proprietary data: eliminating hallucinations and making responses genuinely useful. I build autonomous AI Agent frameworks that execute multi-step workflows without human input. Whether that means PyTorch for a custom machine learning model, TensorFlow for a deployment-optimized pipeline, or combining PyTorch and TensorFlow across different stages of the same system or computer vision for document parsing and image classification — I choose the right tool, not the trendiest one.
My data scientist background means I treat model evaluation as seriously as model building. Nothing ships until the benchmarks prove it works. Every web development project I deliver goes through the same data scientist discipline: measure, validate, ship.
2. The Backend That Holds It Together
A great AI developer still needs solid engineering underneath. As a Python developer, I build the infrastructure that makes AI systems reliable at scale: FastAPI and Django REST APIs, Flask microservices for lightweight integrations, Flask-based task queues for async jobs, PostgreSQL and MySQL schemas built for real data volumes, SQL queries optimized for performance, Docker-containerized services deployed through CI/CD pipelines with Git-managed version control.
Data Scraping and web scraping are core to how I keep models current. I build Scrapy pipelines that continuously pull structured data from the web and load it into PostgreSQL or MySQL. That means your AI developer's models are always working with fresh information. I also use Scrapy for competitive research and e-commerce intelligence. Airtable provides non-technical stakeholders visibility into those Data Scraping pipelines, and Airtable webhooks trigger FastAPI or Django endpoints when records change.
3. Full Stack, Front to Back
I'm a full stack developer and web developer, which means I own the entire delivery. React dashboards, Node.js middleware, JavaScript-heavy interfaces. I build the frontend that makes AI outputs accessible to real users. As a software engineer with web development experience across the full stack, I keep React components, Node.js services, and JavaScript logic clean and maintainable alongside the Python backend.
I also have PHP developer experience. Many clients have existing PHP developer codebases, legacy CMS platforms, older systems that need to connect to modern Python APIs rather than be replaced. I know how to work with what's already there.
4. What Working With Me Looks Like
You get a Python developer and AI developer in one person, backed by a trusted Python developer when the scope demands it. You get production-ready code - documented, tested, Git-managed, containerized with Docker, deployed through CI/CD. You get a data scientist mindset applied to every decision, a software engineer's standards applied to every line, a full stack developer's awareness of the full delivery chain, and a web developer's understanding that the end user is always the point.
If you need an AI developer and Python developer who can take a project from first conversation to live deployment, I'd like to hear about it.
Associated with
Xedrum 🐍 Full-Stack Python & JS Experts | AI-Powered Solutions
$200K+
earned
$65/hr
100%
Job Success
$1M+ earned
Available now
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Top 1% Upwork EXPERT-VETTED Data & Solution Architect.
For over 15 years, I've worked with data, focusing the last 7 years as a Data Architect on managing high-load and big-data projects. I oversee systems that serve hundreds of millions of users and manage petabytes of data, along with overseeing infrastructure budgets of over 1.5 million USD each year.
In the past 8 years on Upwork, I have completed more than 100 projects with a 100% Job Success Score and a 94%+ client return rate.
SERVICES
✅ Data Engineering
✅ AI/ML
✅ AI Adoption & GenAI
✅ Predictive analytics
✅ High-load Data Scraping
✅ Data Integration - seamless connection through APIs
✅ Data Management – ETL pipelines, Data Warehousing, Data Lakes, DataOps
✅ IT Infrastructure & Solution Architecture
✅ DevOps for Performance Optimization and Cost Reduction
STACK & TECHNOLOGIES
Core stack: Python
Data Warehousing: Redshift | BigQuery | Snowflake | Teradata
Data Lakes: Hadoop | Amazon S3 | Azure Data Lake Storage | Google Cloud Storage
ETL Tools and Data Pipelines: Databricks Workflows | AWS Glue | Google Cloud Dataflow
Big Data Processing: Spark | Hadoop | Google Dataflow | Dask | Amazon Kinesis | Kafka
Databases: MySQL | PostgreSQL | Google BigQuery | MongoDB | DynamoDB | Redis
Data Analysis and Machine Learning: Pandas | NumPy | Dask | SciPy | OpenCV | TensorFlow | PyTorch | Scikit-learn | XGBoost | Keras | spaCy
GenAI: OpenAI GPT-3 | GPT-4 | Lama 2 | Llava | Bard | Mistral | Anthropic
Visualization Tools and Libraries: Power BI | Looker | Quicksight | Grafana | Plotly | D3.js | Dash | Matplotlib
DevOps and DataOps
AWS | GCP | Azure | Docker | Kubernetes | Amazon ECS | Jenkins | GitLab CI/CD | GitHub CI/CD | Bitbucket Pipelines | Ansible | Terraform | CloudFormation | Prometheus | Grafana | Datadog | Zabbix | ELK Stack | Elasticsearch | Logstash | Kibana | Graylog
Web Development
Front-End: React.js | Redux | Redux-Saga
Back-End: Python | Django Rest Framework | Flask
We use the Agile approach to ensure great products delivery. As our benefits, we provide the guarantee, NDA signing, and post-service for delivered products.
Want to work together?
I’d love to hear from you!
Vlad Z.
has worked
.
Associated with
DATAFOREST
$5M+
earned
$15/hr
96%
Job Success
$200K+ earned
Available now
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☀️ 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲𝗱 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗘𝘅𝗽𝗲𝗿𝘁 𝘄𝗶𝘁𝗵 𝗣𝗿𝗼𝘃𝗲𝗻 𝗠𝗮𝘀𝘁𝗲𝗿𝘆 ☀️
✅ 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 🏆𝐅𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫
✅ 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐢𝐧𝐠 𝐄𝐱𝐜𝐞𝐥𝐥𝐞𝐧𝐜𝐞 🌟| 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬
✅ 𝐀𝐥𝐥 𝟓.𝟎𝟎 ⭐ 𝐅𝐞𝐞𝐝𝐛𝐚𝐜𝐤
✅ 𝟏𝟒,𝟎𝟎𝟎 + 𝐔𝐩𝐰𝐨𝐫𝐤 𝐇𝐨𝐮𝐫𝐬
✅ 𝟗𝟎+ 𝐔𝐩𝐰𝐨𝐫𝐤 𝐉𝐨𝐛𝐬
✅ 𝟏𝟎𝟎% 𝐂𝐥𝐢𝐞𝐧𝐭 𝐑𝐞𝐜𝐨𝐦𝐦𝐞𝐧𝐝𝐚𝐭𝐢𝐨𝐧
✅ 𝐏𝐫𝐨𝐯𝐞𝐧 𝐓𝐫𝐚𝐜𝐤 𝐑𝐞𝐜𝐨𝐫𝐝 & 𝐆𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞 𝐨𝐟 𝐇𝐢𝐠𝐡-𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲
𝐎𝐯𝐞𝐫𝐯𝐢𝐞𝐰:
Since 2012, working as a MERN Stack developer with expertise in MongoDB, Express, and Node.js, as well as React for MERN projects. With a strong background in developing custom MEAN/MERN Stack websites, portals, and web applications, I excel at building innovative, tailored, and scalable solutions. My experience includes delivering robust, feature-rich, and modular applications that meet specific client needs and provide a seamless user experience.
I have developed several apps targeting different verticals like events, fitness, healthcare, fintech. lifestyle, navigation, on-demand, service provider, video/photo editing, AR, VR, utility, entertainment, dating, social networking, social media, and news.
🙋♂️ 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬 𝐚𝐧𝐝 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞:
👉 𝐌𝐲 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐒𝐤𝐢𝐥𝐥𝐬:
💎 Nodejs - JavaScript runtime for backend
💎 Expressjs - Web app framework for Node
💎 Nestjs - Framework for Node with TypeScript
💎 Nextjs - Framework for universal React apps
👉 𝐌𝐲 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐒𝐤𝐢𝐥𝐥𝐬:
💎 React - Library for building UIs
💎 Lovable/Supabase
💎 TypeScript - Typed superset of JavaScript
👉 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬:
💎 MongoDB - NoSQL database
💎 PostgreSQL - Object-relational SQL database
💎 MySQL - Object-relational SQL database
💎 DynamoDB - NoSQL database service
👉 𝐔𝐈 𝐋𝐢𝐛𝐫𝐚𝐫𝐢𝐞𝐬:
💎 Tailwind CSS - Utility-first CSS framework
💎 Material UI - React components library
💎 Ant Design - React components library
💎 Chakra UI - Modular React UI components
𝐒𝐭𝐚𝐭𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐀𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧:
💎 Redux/Redux-Thunk - Centralized state management
💎 React Context API - Internal state management
💎 NgRx - State management for Angular
💎 Auth0 - Authentication as a service
👉 𝐅𝐨𝐫𝐦𝐬 𝐚𝐧𝐝 𝐕𝐚𝐥𝐢𝐝𝐚𝐭𝐢𝐨𝐧:
💎 React Hook Form - Forms library
💎 Lovable
💎 Formik - Forms library
💎 Yup - Form validation
👉 𝐑𝐞𝐚𝐥-𝐭𝐢𝐦𝐞 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐌𝐞𝐬𝐬𝐚𝐠𝐢𝐧𝐠:
💎 GraphQL - Query language for APIs
💎 Socketio - Realtime communication
💎 MQTT - Lightweight messaging protocol
👉 𝐃𝐚𝐭𝐚 𝐆𝐫𝐢𝐝𝐬 𝐚𝐧𝐝 𝐕𝐢𝐬𝐮𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧:
💎 Ag-Grid - Data grid component
💎 Chartjs - Charting library
💎 ApexCharts - Charting library
👉 𝐃𝐚𝐭𝐚 𝐇𝐚𝐧𝐝𝐥𝐢𝐧𝐠 𝐚𝐧𝐝 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬:
💎 TypeORM - ORM for SQL/NoSQL databases
💎 Redis - In-memory data store
👉 𝐃𝐞𝐬𝐢𝐠𝐧 𝐓𝐨𝐨𝐥𝐬:
💎 Figma - Prototyping tool
💎 Adobe XD - Prototyping tool
👉 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬
💎 Expertise in mobile development with React-Native and Flutter
💎 Design and development of iOS and Android mobile apps using Firebase, Hybrid Apps, and TypeScript.
👉 𝐃𝐞𝐯𝐎𝐩𝐬 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
💎 Docker & Containerization
💎 AWS (EC2, S3, Lambda, Cognito, CloudWatch)
💎 Vercel, Netlify, Heroku, Railway, Render
💎 CI/CD Pipelines (GitHub Actions, GitLab CI/CD, Jenkins)
💎 NGINX & Apache Server Configuration
💎 Version Control with Git & GitHub/GitLab/Bitbucket
💎 Shell Scripting, SSH, FTP/SFTP Management
💎 Deployment Automation & Monitoring Tools.
I follow Agile development methodology (Scrum) adhere to constant clear client communication to ensure transparency to stakeholders, easy adaptability to changing requirements, predictable delivery and costs and a high-quality final product. I’m focused on the success of the application and believe in long term relationships.
I believe that the more we communicate, the better job I can do for you therefore looking forward to hearing from you and working for you soon.
Associated with
Expinator Web Technology
$500K+
earned
$35/hr
97%
Job Success
$100K+ earned
Available now
Offers consultations
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I build and stabilize AI automation, agents, and full stack SaaS products that need to work reliably in production, not just in demos.
I’ve shipped and scaled systems for founders from Y Combinator, Founders Factory, FutureLabs, and Republic of Work. Founders I’ve built with have gone on to raise €2M+, and my AWS/serverless work ranks in the top 0.2% for DevOps.
A few results:
⚡ Multi-tenant SaaS with 28% faster integrations
⚡ Serverless system running under 200ms latency at 10K+ users
⚡ AI RAG system improving support efficiency by 45%
⚡ Next.js migration reducing hosting costs by 15%
⚡ SaaS MVPs shipped to production, with founders raising after launch
A lot of products today get built quickly with Cursor, Lovable, Bolt, Claude Code, or an early freelance team. Then real users arrive.
That’s when the problems show up: messy code, fragile backends, AI features that worked in the demo but fail in production, scaling bottlenecks, unreliable automations, and rising AWS costs.
I help turn that into a production-ready system with clean architecture, a solid backend, reliable AI behavior, and room to scale. I also build new products properly from idea to MVP to production.
What I can help with:
* AI agents, chatbots, and AI voice agents
* Workflow automation and business process automation using n8n, Make, Zapier, and APIs
* Production RAG, LLM, and knowledge-based systems
* Full-stack SaaS development with Next.js, React, Node.js, TypeScript, JavaScript, and Python
* Backend systems, REST APIs, third-party integrations, and multi-tenant architecture
* PostgreSQL, Supabase, Stripe, AWS, serverless, performance, and cost optimization
* Stabilizing fragile or AI-built MVPs before they become technical debt
How I work:
We can start small. Send me your app URL, repo, or brief with a short note on the problem. I’ll review the likely bottlenecks, scaling risks, reliability issues, and what I would fix first before you commit to anything bigger.
From there, I can take technical ownership of the build: architecture, backend, integrations, AI systems, delivery, and the parts that usually stall.
I work best with:
* Funded startups starting with or moving beyond MVP
* SaaS teams hitting scaling, reliability, or cost issues
* Founders who want a senior engineer to take ownership, not just ship tickets
I’m probably not the right fit if you’re looking for the cheapest possible build. I’m a fit when the product matters, users depend on it, and it has to work.
Tech I work with often:
Python, JavaScript, TypeScript, React, Next.js, Node.js, AWS, Supabase, PostgreSQL, Stripe, serverless, OpenAI, Claude, Gemini, RAG, LangChain, AI agents, n8n, Make, Zapier, automation, and APIs.
If your product was built fast and now needs to work properly, or you want it built right from the start, send me the repo, app, or brief, and I’ll tell you what I’d fix first.
Ehtasham A.
has worked
.
Associated with
Zenveus
$100K+
earned
$35/hr
90%
Job Success
$1M+ earned
Available now
Offers consultations
Start of list.
End of list.
𝙁𝙪𝙡𝙡-𝙎𝙩𝙖𝙘𝙠 & 𝘼𝙄 𝙀𝙣𝙜𝙞𝙣𝙚𝙚𝙧 | 𝙍𝙚𝙖𝙘𝙩 | 𝙉𝙤𝙙𝙚.𝙟𝙨 | 𝙋𝙮𝙩𝙝𝙤𝙣 | 𝙇𝙇𝙈 | 𝙍𝘼𝙂 | 𝙈𝙪𝙡𝙩𝙞-𝘼𝙜𝙚𝙣𝙩 𝙎𝙮𝙨𝙩𝙚𝙢𝙨 | 𝘾𝙡𝙖𝙪𝙙𝙚 | 𝙂𝙋𝙏-4
I'm a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 & 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 with 15+ years of experience building production-ready web applications, scalable backend systems, and intelligent AI-powered solutions for startups and enterprises. I combine end-to-end full-stack development with deep AI expertise, delivering everything from high-performance React and Node.js applications to advanced LLM integrations, RAG pipelines, and autonomous multi-agent systems.
✅ Services Offered
✦ Custom Full-Stack Web & SaaS Application Development
✦ AI Chatbot & LLM-Powered Application Development
✦ RAG Pipeline & Vector Search Implementation
✦ Multi-Agent AI System Design & Deployment
✦ REST API & GraphQL Development and Integration
✦ Cloud Infrastructure Setup & MLOps Pipeline Automation
✦ Mobile App Development (React Native, Swift, Kotlin)
✅ Full-Stack Development Expertise
✦ React.js, Next.js, TypeScript, Tailwind CSS, Redux
✦ SaaS platforms, PWAs, SPAs, and enterprise web applications
✦ Node.js (Express, NestJS), Python (Django, Flask, FastAPI), Laravel (PHP)
✦ RESTful APIs, GraphQL, WebSockets, OAuth2, and JWT authentication
✦ Headless CMS, Shopify, and eCommerce frontend integrations
✦ Real-time apps - chat, dashboards, geo-tracking, live notifications
✦ Mobile apps with React Native, Swift, and Kotlin
✅ AI & LLM Development
✦ LLM integration and deployment - Claude, GPT-4, Mistral, Llama
✦ RAG pipelines with LangChain, LlamaIndex, Pinecone, Weaviate, and FAISS
✦ Multi-agent systems using AutoGen, CrewAI, and OpenAI Swarm
✦ Computer vision systems using OpenCV, YOLO, and Stable Diffusion
✦ Conversational AI & voice interfaces - Whisper, ElevenLabs, Twilio
✦ ML/DL model development with TensorFlow, PyTorch, and HuggingFace
✅ Backend & Microservices
✦ Microservices architecture with RabbitMQ, Redis, and Celery
✦ Subscription billing, Stripe/PayPal integrations, and multi-tenant SaaS backends
✦ GDPR/HIPAA-compliant systems for healthcare and fintech
✦ Event-driven architecture, background job queues, and WebSocket systems
✅ Databases & Vector Stores
✦ PostgreSQL | MySQL | MongoDB | Redis | Pinecone | FAISS | Weaviate | Neo4j | DynamoDB
✅ Cloud, DevOps & MLOps
✦ AWS | GCP | Docker | Kubernetes | GitHub Actions | Jenkins | CI/CD Pipelines | n8n
✅ Industries I Have Worked With
✦ SaaS & Startups – MVPs, multi-tenant platforms, subscription billing, user onboarding, analytics dashboards
✦ Fintech – Payment systems, fraud detection, KYC/AML workflows, compliance-ready backends, digital wallets
✦ Healthcare – HIPAA-compliant platforms, patient portals, telemedicine apps, appointment scheduling, EMR/EHR integrations
✦ EdTech – LMS platforms, adaptive learning systems, assessments, gated content, billing and subscription management
✦ Real Estate – Property listing platforms, geo-search, CRM systems, booking management, tenant and landlord portals
✦ Logistics – Live tracking, driver apps, route optimization, fleet management, delivery operations
✦ AI & Automation – Intelligent workflows, AI agents, document processing, chatbots, RAG systems, workflow automation
✦ HR & Recruitment – ATS platforms, employee management systems, payroll integrations, performance tracking
✦ Travel & Hospitality – Booking engines, reservation systems, itinerary management, customer portals
✦ Media & Content Platforms – Video streaming, membership sites, content management, monetization systems
✦ Manufacturing & Operations – ERP integrations, production tracking, inventory control, operational dashboards
✦ Enterprise Solutions – Internal tools, workflow automation, reporting systems, role-based access control, API integrations
✅ Why Work With Me?
✔ End-to-End Delivery - Full-stack development and AI engineering under one roof, from idea to production
✔ Production-Ready Code - Modular, documented, and testable codebases built to scale
✔ Startup & Enterprise Experience - SaaS MVPs, marketplace apps, enterprise tools, and AI products
✔ Cutting-Edge AI Stack - Always current on the latest LLM frameworks, Claude API, agent tools, and cloud services
✔ Transparent & Agile - Clear milestones, consistent communication, and reliable delivery
📩 Ready to turn your idea into a high-performing AI product or scalable web application?
From product strategy and architecture to development, deployment, and optimization, I focus on delivering high-quality solutions that improve efficiency, enhance user experience, and create measurable business value.
Let's discuss your project, and turn your vision into a successful product.
Associated with
Matrix Marketers
$4M+
earned
$45/hr
100%
Job Success
$100K+ earned
Available now
Offers consultations
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Trusted by startups and enterprises, including a #1 Finance App Store product, a $6.8M-funded fintech wallet, and a SaaS platform with 5M+ monthly visits.
7+ years of extensive experience. 100% Job Success. Senior Full Stack Developer and Tech Lead.
Experienced in delivering scalable, full-stack web and mobile products across React, React Native, Node.js, and cloud infrastructure: AWS, K8s, Azure.
𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐈'𝐦 𝐩𝐫𝐨𝐮𝐝 𝐨𝐟:
𝐑𝐞𝐚𝐥 𝐞𝐬𝐭𝐚𝐭𝐞 𝐦𝐚𝐫𝐤𝐞𝐭𝐢𝐧𝐠 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 - helps agents and brokers generate more listings through personalized, trackable direct mail campaigns. Built full-stack on Next.js, Node.js, PostgreSQL, and AWS.
𝐅𝐢𝐧𝐓𝐞𝐜𝐡 - Cryptocurrency trading platform for the Icelandic market serving 20,000+ users, ranked #1 in Finance on the App Store. Built Profit & Loss tracking from scratch using transaction history and historical exchange rates, integrated multi-currency trading, and delivered both web and mobile experiences.
Stack: React, React Native, Node.js, MongoDB.
𝐀𝐈 + 𝐀𝐮𝐭𝐨𝐦𝐨𝐭𝐢𝐯𝐞 - AI-powered car shopping platform that helps users find the best offers. Engineered SEO-friendly static HTML generation using AWS Lambda and S3, achieving strong SEO performance without SSR, and integrated a third-party dealer-matching API for verified sellers.
𝐒𝐚𝐚𝐒 - Project management SaaS with a Gantt chart, task dependencies, real-time collaboration via WebSockets, multilingual/timezone support, and Stripe/PayPal subscription billing.
Stack: Next.js, Nest.js, MongoDB.
𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 - Online furniture store with AI product assistant, AI-powered recommendations, custom CMS and CRM, Stripe-style checkout flow, and SEO optimization. Serving 100,000+ monthly users. Features include product variation, complex discount logic, category/subcategory navigation, wishlist, and efficient catalog filtering.
Stack: React, Node.js.
𝐓𝐞𝐜𝐡 𝐬𝐭𝐚𝐜𝐤:
⚡ Frontend: React, Next.js, TypeScript, Redux, TanStack, Tailwind CSS
⚡ Backend: Node.js, Express, NestJS, Fastify, GraphQL
⚡ Databases: PostgreSQL, MongoDB, DynamoDB, Supabase
⚡ AWS: Lambda, S3, EC2, CloudFront, API Gateway, RDS
⚡ DevOps: Docker, Kubernetes, GitHub Actions, CircleCI, CI/CD
⚡ Mobile: React Native, Expo
𝐖𝐡𝐚𝐭 𝐈 𝐛𝐫𝐢𝐧𝐠:
Full-stack ownership: I handle architecture, backend APIs, databases, frontend, and AWS deployment.
AWS infrastructure: Serverless architectures with Lambda and S3, scalable deployments, CI/CD pipelines, cost-optimized setups.
SaaS platforms: Multi-tenant architecture, subscription billing (Stripe/PayPal), admin dashboards, real-time collaboration via WebSockets.
FinTech & compliance: Secure transaction flows, KYC/AML-ready architecture, regulatory compliance from day one.
AI integrations: LLM-powered features, intelligent chatbots, and workflow automation.
𝐖𝐡𝐚𝐭 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐦𝐞 𝐥𝐨𝐨𝐤𝐬 𝐥𝐢𝐤𝐞:
✓ Strategic input at the architecture stage
✓ Clear, proactive communication and honest timelines
✓ Code your team can actually maintain and scale
✓ Security and compliance thought through from the start
✓ 30% faster delivery using AI-powered development tools
✓ Available across US/EU time zones, fluent English
Great software starts with the right technical partner.
Message me, and we'll set up a quick call to discuss your project.
Associated with
Stubbs 🏆 Top rated plus React agency
$1M+
earned
$28/hr
100%
Job Success
$100K+ earned
Available now
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6+ years building full-stack web products that ship on time and hold up in production. I work across the full stack, from React and Next.js interfaces to Node.js and Laravel backends, and I take ownership of the whole thing.
What I work on:
Web applications and SaaS platforms in React, Next.js, and TypeScript. Backend services, REST APIs, and GraphQL in Node.js, Express.js, and Laravel. JavaScript and TypeScript across both frontend and backend. Third-party integrations and webhooks: Stripe, HubSpot, Salesforce, Twilio, and custom CRM and payment APIs. Real-time features with WebSockets and server-sent events. CI/CD pipelines, automated testing, and deployment on AWS, Docker, and GitHub Actions. Performance optimization and security hardening built in from the start.
Core stack:
JavaScript, TypeScript, React, Next.js, Node.js, Express.js, Laravel, PHP, PostgreSQL, MySQL, MongoDB, REST APIs, GraphQL, WebSockets, AWS, Docker, GitHub Actions, Vercel, Tailwind CSS, Redux, Zustand
Good fit for: SaaS products, internal tools, API integrations, marketplace platforms, e-commerce, web applications, product rebuilds and migrations, startup MVPs.
I work within the Softermii team, a full-cycle software and AI development company with 100+ products delivered across healthcare, fintech, real estate, logistics, and e-commerce. We also use Apex, our internal delivery framework, which keeps scope tight, prevents rework, and makes delivery timelines predictable.
Associated with
Softermii
$1M+
earned
$40/hr
100%
Job Success
Available now
Offers consultations
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✅ 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 • 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 • 𝟴+ 𝘆𝗿𝘀 𝗙𝘂𝗹𝗹 𝗦𝐭𝐚𝐜𝐤 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 (𝗪𝗲𝗯 & 𝗔𝗜 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻)
I help businesses eliminate manual work and scale smarter — through AI-powered automation, custom workflow systems, and full-stack SaaS platforms. With 8+ years of experience, I deliver production-ready solutions that drive real, measurable results.
🤖 𝐀𝐈 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐖𝐨𝐫𝐤𝐟𝐥𝐨𝐰 (𝐏𝐫𝐢𝐦𝐚𝐫𝐲 𝐅𝐨𝐜𝐮𝐬):
𝐍8𝐍: Complex multi-step workflows, custom nodes, self-hosted & cloud deployments
𝐕𝐨𝐢𝐜𝐞 𝐀𝐠𝐞𝐧𝐭𝐬: Outbound calling agents for onboarding, sales, and support
𝐀𝐠𝐞𝐧𝐭𝐬 & 𝐋𝐋𝐌𝐬: GPT-4o, Claude, LangChain, RAG pipelines, vector DBs (Weaviate)
𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬: REST APIs, webhooks, CRMs, databases, third-party SaaS tools
𝐀𝐈 𝐔𝐬𝐞 𝐂𝐚𝐬𝐞𝐬: Lead gen automation, document processing, AI chatbots, SEO content pipelines, employee onboarding, web scraping for RAG
🛠 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤:
𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: React, Next.js, React Native
𝐁𝐚𝐜𝐤𝐞𝐧𝐝: Node.js, TypeScript, Python (FastAPI)
𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: PostgreSQL, MongoDB, Redis
𝐂𝐥𝐨𝐮𝐝: AWS (EC2, Lambda, Fargate, RDS, S3, CloudFront, SES)
𝐃𝐞𝐯𝐎𝐩𝐬: Docker, GitHub Actions, CI/CD
𝐏𝐚𝐲𝐦𝐞𝐧𝐭𝐬: Stripe
𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬: Supabase, Lovable
⭐ 𝐑𝐨𝐥𝐞𝐬 𝐈 𝐂𝐨𝐯𝐞𝐫:
👉 AI Automation Engineer (N8N)
👉 Voice AI Agent Developer
👉 Workflow & Integration Specialist
👉 AI/LLM & RAG Developer
👉 Senior Full Stack Developer
👉 Node.js Backend Developer
👉 React / Next.js Developer
👉 AWS Serverless Engineer
👉 SaaS Developer
👉 API Integration Expert
👉 React Native Mobile Developer
✌️ 𝐒𝐞𝐥𝐞𝐜𝐭𝐞𝐝 𝐖𝐨𝐫𝐤:
𝐕𝐨𝐢𝐜𝐞 𝐎𝐧𝐛𝐨𝐚𝐫𝐝𝐢𝐧𝐠 𝐀𝐠𝐞𝐧𝐭: Outbound AI calling agent that auto-calls new platform registrants and guides them through onboarding — zero human involvement
𝐄𝐦𝐩𝐥𝐨𝐲𝐞𝐞 𝐎𝐧𝐛𝐨𝐚𝐫𝐝𝐢𝐧𝐠 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 (𝐍8𝐍): End-to-end workflow provisioning all system accesses, sending welcome emails, contracts, and HR docs automatically on hire
𝐒𝐄𝐎 𝐁𝐥𝐨𝐠 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 (𝐍8𝐍): Agentic SEO-optimized content pipeline deployed for 5 businesses — research, write, format, and publish on autopilot
𝐑𝐀𝐆 𝐒𝐮𝐩𝐩𝐨𝐫𝐭 𝐀𝐠𝐞𝐧𝐭𝐬 (𝐍8𝐍): Built RAG-based AI support agents for multiple clients, including automated web scraping pipelines to keep knowledge bases fresh
𝐉𝐎𝐌𝐈 𝐀𝐠𝐞𝐧𝐭𝐢𝐜 𝐒𝐞𝐚𝐫𝐜𝐡: Implemented intelligent agentic search inside JOMI's surgical education platform — increased subscription rates by 25%
𝐏𝐚𝐤𝐢𝐬𝐭𝐚𝐧 𝐋𝐚𝐰 𝐁𝐨𝐭: Legal RAG chatbot with source-backed answers, making legal info accessible
𝐀𝐈-𝐓𝐮𝐛𝐞: AI video generation & community platform — improved user engagement by 30%
𝐌𝐞𝐝𝐍𝐨𝐭𝐞𝐬: Clinical documentation platform streamlining healthcare workflows
😍 𝐇𝐨𝐰 𝐈 𝐖𝐨𝐫𝐤:
Scope → milestones → weekly demos and written updates
Clean, readable code with tests and automated deploys (GitHub Actions)
Production checklists: security, observability, backups, performance budgets
Async-first collaboration; overlap with US/EU hours (based in PK)
😊 𝐄𝐧𝐠𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐎𝐩𝐭𝐢𝐨𝐧𝐬:
Fixed-scope sprints or hourly
Prefer a small paid pilot (1–2 weeks) to earn trust, then scale
❤️ Let's automate what slows you down and build what scales you up. Send a message — I'll share a quick plan and timeline for your first milestone.
Keywords
N8N Developer | N8N Automation | AI Workflow Automation | Voice AI Agent | Outbound Calling Agent | AI Onboarding Automation | Employee Onboarding Automation | SEO Blog Automation | Agentic Content Pipeline | RAG Support Agent | RAG Pipeline | Web Scraping Automation | Agentic Search | AI Agent Developer | LLM Integration | LangChain Developer | GPT-4 Integration | Claude API | AI-Powered SaaS | Workflow Automation Expert | API Integration Specialist | Senior Full Stack Developer | React / Next.js Developer | Node.js Backend Developer | Full Stack MERN Developer | Python FastAPI Developer | AWS Serverless Engineer | SaaS Developer | React Native Developer | Healthcare Software Developer | Vector Database | Weaviate | Supabase Developer | Docker CI/CD | GitHub Actions
$95/hr
100%
Job Success
$100K+ earned
Available now
Start of list.
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With over a decade of experience, I have built complete connected hardware products - from PCB design and firmware to mobile apps and cloud infrastructure.
Most teams build the software. We build the entire product.
My name is Alex Polchert, co-founder at Imajine. Our team delivers end-to-end IoT and hardware development, from the first circuit board prototype all the way through to the cloud platform and mobile app that connects to it.
Our work is used by millions of users across the U.S.
𝗛𝗮𝗿𝗱𝘄𝗮𝗿𝗲 & 𝗙𝗶𝗿𝗺𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
End-to-end hardware prototype development: CAD design, PCB manufacturing, component sourcing and testing, 3D-printed enclosures
Firmware development for ESP32, Arduino, ESP8266 and custom microcontrollers
Sensor sourcing, evaluation and integration: audio, PPG, ECG, motion, temperature, gas, and more
Embedded audio and signal processing for real-time detection and alerts
BOM creation, component sourcing and manufacturing coordination
OTA firmware updates and device provisioning
Bluetooth Low Energy and WiFi connectivity and commissioning
Technologies: ESP32, Arduino, ESP8266, C/C++, MQTT, BLE, AWS IoT Core, GCP IoT
𝗜𝗼𝗧 𝗖𝗹𝗼𝘂𝗱 & 𝗠𝗼𝗯𝗶𝗹𝗲
IoT cloud infrastructure setup: device provisioning, MQTT protocol, real-time data processing, OTA updates
Mobile app development integrated with hardware libraries for Bluetooth and WiFi connection
Web-based dashboards for real-time data display, alerts, device management and analytics
Multi-role platforms connecting device installers, business admins and end users
Custom AI/ML algorithms for device data interpretation and predictive alerts
Technologies: AWS IoT Core, GCP, Node.js, Nest.js, Next.js, React.js, React Native, MongoDB, MySQL, Firebase, Twilio
𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 & 𝗠𝗲𝗱𝗶𝗰𝗮𝗹 𝗜𝗼𝗧
Medical wearable device development: sensor integration, firmware, prototype to production
Remote patient monitoring systems with real-time hospital web dashboards
Telehealth and telemedicine platform development: video appointments, e-prescriptions, lab results
HIPAA-compliant cloud infrastructure and data management
Electronic Health Record and EMR system development
Healthcare IoT: wearable devices, cloud infrastructure, mobile apps and clinical dashboards
Technologies: HIPAA, FHIR, AWS Cognito, Vonage, Cronofy, Node.js, React.js, React Native, MySQL, MongoDB
𝗔𝗜/𝗠𝗟 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀
ChatGPT, OpenAI, and LLM-based web and mobile applications
AI-based CRMs and sales automation
Custom niche generative AI algorithms and integrations
Computer vision, signal processing and real-time detection algorithms
Data science and custom algorithm development
Technologies: PyTorch, Python, Scikit-learn, Hugging Face, AWS SageMaker, BigML
𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
Custom marketplace development with Stripe Connect: KYC, payouts, business commission logic, identity verification
Custom CRM development: analytics, KPI dashboards, PDF generation, email and SMS integrations
Real estate platforms, social networks, fintech apps and SaaS products
Multi-vendor and multi-role platforms serving millions of users
Technologies: Stripe Connect, React.js, Next.js, Node.js, Nest.js, Vue.js, MongoDB, MySQL, DynamoDB, AWS, GCP, Firebase
Whether you are building a hardware product from scratch, adding a connected app to an existing device, or scaling a software platform - our initial consultation is always free and no strings attached.
Are you available for a quick chat to discuss your project?