Full-stack developer and software architect with expertise in Python, web development, and API integrations. I build custom web applications, WordPress sites, automation tools, and scalable software solutions.
Services: Python development, software architecture, custom web apps, WordPress, web scraping, API integrations, and custom app development.
Committed to clean code, on-time delivery, and tailored solutions that fit your business needs.
Web Scraping
Product Management
Web Development
Product Development
Web Application
Script
Python
Django Stack
CRM Development
API Development
Sorin Stefan A.
Craiova, Romania
$25/hr
5.0
11 jobs
Specialist Python Engineer specializing in automation, data workflows, and production-grade infrastructure.
I build systems that run reliably, scale cleanly, and are easy to maintain not one-off scripts.
My work focuses on automation, ETL pipelines, API orchestration, Dockerized deployments, and PostgreSQL-backed data systems.
Every solution is designed with architecture, stability, and long-term operation in mind.
Core Expertise
Python Automation & Scraping (Playwright, Selenium, smart delays, proxy handling)
Data Engineering & ETL (pandas, SQLAlchemy, structured pipelines, retries, validation)
API Integration (REST, OAuth, token workflows, webhooks, secure data flow)
PostgreSQL (schema design, migrations, indexing, upsert logic, integrity checks)
Docker / Linux Infrastructure (Docker Compose, cron-based automation, secure deployments)
Orchestration & Monitoring (custom runners, schedulers, logging, error recovery)
Delivery Standards
Clean, modular, documented code
Predictable behavior under real-world conditions
Clear architecture and configuration
Tested workflows before deployment
Full transparency no hidden logic or shortcuts
How I Work
Understand the business logic
Design a stable workflow
Build clean, modular components
Test, deploy, and document
Ensure the system operates reliably over time
Typical Projects
Automated price monitoring systems
Multi-step ETL pipelines into PostgreSQL
API-based data ingestion & transformation
Dockerized automation environments
Secure backend integrations (FastAPI / Flask)
If you need a reliable, long-term automation or data system not trial-and-error scripts let’s build it correctly from the start.
Web Scraping
Data Extraction
Python Script
Automation
Data Scraping
API Development
REST API
Django
DevOps
Docker
PostgreSQL
Bash Programming
Linux System Administration
Flask
CI/CD
Arthur S.
Cluj-Napoca, Romania
$15/hr
5.0
3 jobs
🌟 Message me if you're interested in automating your business using AI/ML tools! I can help support and streamline your decision-making processes.
💡 I'm a ML engineer with relevant experience of AI integration into business. Here’s a core set of services I offer:
🔸 Agent end-to-end development and deployment with both low and high code frameworks.
🔸 WhatsApp/Telegram chatbots, with RAG, grounding architecture, using vector databases like Pinecone or ChromaDB.
🔸 LLM integration, using public APIs like OpenAI, VertexAI, AWS SageMaker, or Claude, as well as domain-specific fine-tuning.
🔸 Data collection and ETL using tools like Apify, Selenium, BeautifulSoup, requests.
💻 Tech Stack:
Programming languages: Python
Agent development: OpenAI, VertexAI, AWS SageMaker, Claude APIs, Pinecone, ChromaDB, LangChain, LangGraph, Hugging Face Transformers, Ollama
Agent monitoring: LangFuse, LangSmith
Deep Learning/ML: PyTorch, TensorFlow/Keras, scikit-learn, pandas, matplotlib/seaborn, NumPy
Cloud services: AWS, GCP/GCS, Snowflake
Databases: MySQL, SQLite, PostgreSQL, SnowflakeDB, MongoDB
Back-end/API: Flask, FastAPI, Django, asyncio, multiprocessing
Bots: Telebot, Aiogram, PyWa, n8n, Zapier, Make
Data scraping: Apify, requests, bs4, Selenium/ChromeDriver
Version control: Git, Github, CI/CD (Github actions or gitlab)
Python
Artificial Intelligence
Machine Learning
AI Development
Neural Network
AI Chatbot
Data Scraping
AI Agent Development
PyTorch
Keras
Google Cloud Platform
Python Scikit-Learn
Snowflake
Git
LangChain
OpenAI API
Vertex AI
n8n
AI Classifier
AI Platform
Diana S.
Cluj-Napoca, Romania
$50/hr
5.0
21 jobs
I build automations and internal systems for businesses that are dealing with a lot of operational work across multiple platforms.
Most of the requests I handle are not simple Zapier-style automations, and there’s usually already a stack of tools in place, but the team is still moving data manually between systems, fixing mismatched information, chasing updates, exporting reports, handling approvals manually, or relying on people to keep processes together.
I work a lot with n8n, APIs, AI workflows, Monday, Airtable, Shopify, Google Sheets, Supabase, CRMs, Typeform, reporting systems, and custom internal tooling.
One of my recent projects included large data processing workflows between external platforms, automated reporting systems, AI-assisted admin workflows, internal approval and onboarding systems, media and document processing pipelines, reward/payment workflows, and operational dashboards pulling data from multiple sources.
A big part is figuring out how the business operates day to day, then building workflows to reduce manual coordination and make the operations side run properly without adding more overhead to the team.
Automated Workflow
API Integration
Zapier
Make.com
Microsoft Power Automate
CRM Automation
Process Optimization
Task Automation
HubSpot
n8n
Airtable
AI Implementation
Sales Funnel
Java
REST API
Volodymyr K.
Cluj-Napoca, Romania
$35/hr
5.0
21 jobs
✌🤖 𝗟𝝾𝝾𝗸𝗶𝗻𝗴 𝗳𝝾𝗿 𝗮 𝗿𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝝖𝝞/𝗪𝗲𝗯 𝝾𝗿 𝗠𝝾𝗯𝗶𝗹𝗲 𝗱𝗲𝘃𝗲𝗹𝝾𝗽𝗲𝗿?
15+ years in Software Engineering | 4+ years in AI/ML & Computer Vision. I build scalable, production-grade SaaS platforms driven by modern AI. From complex Computer Vision pipelines to custom LLM agents - I deliver secure architecture and clean code, not just scripts.
💡 I can help you with:
• Generative AI & LLM Agents: Custom Chatbots, Copilots, and automation tools (OpenAI, Claude, Llama).
• Computer Vision (CV): Object Detection (YOLO), OCR, Face Recognition, and Video Analytics.
• RAG Systems: "Chat with your data" setups (PDFs, SQL, Notion) using Vector DBs (Pinecone, Weaviate).
• SaaS & Web Platforms: Scalable Python/Node.js backends, React frontends, and secure REST/GraphQL APIs.
• Rapid MVPs (Low-Code): Validating ideas fast using Bubble, FlutterFlow, or WeWeb.
• Business Automation: Complex workflows connecting apps via n8n, Make, or Zapier.
• AI Architecture Strategy: Consulting on model selection, infrastructure cost and scalability.
🔑 Why work with me
✅ Expertise - 15 years, 190+ successful projects
✅ Fair Pricing - Clear, per-sprint pricing. No ballooning budgets.
✅ Cost Effective - I’m new on Upwork, ready to work cheaper for reviews and your feedback
✅ Own everything - Code in your repos, full control, zero lock-in.
✅ No bugs, no drama - Built-in QA process = happy users
✅ Security - Secure apps, following compliance
✅ Change-ready - New idea mid-sprint? No sweat. We adjust without a mess.
✅ Crystal-clear comms - One point of contact. Straight talk. Fast replies.
🔄 How I work
1. Initial analysis - Understand your goals, blockers and success metrics.
2. Discovery - Map out the scope, pick the right tech, create a development roadmap
3. Build phase - Rapid, structured development in clear iterations/sprints with feedback sessions and regular reporting. Extensive testing.
4. Delivery - Sharing Code, documentation and final deployment
5. Support - Ongoing improvements and post-launch care if needed
🧰 Tools we use
Whatever suits your product best, not just trendy stacks.
• Frontend: React.js, Next.js (SSR), TypeScript, Tailwind CSS
• Backend: Python (FastAPI, Django), Node.js, GraphQL, REST APIs, gRPC
• AI/ML: OpenAI (GPT-4), Anthropic (Claude), LangChain, LlamaIndex, YOLOv8 (CV), PyTorch
• Mobile & Web: React Native (CLI/Expo), Flutter, iOS & Android Native Modules, PWAs
• Infra: AWS, GCP, Azure, Serverless, Kubernetes, Fargate
• Databases: PostgreSQL, MongoDB, Redis, Vector DBs (Pinecone, Weaviate) for RAG
• No-code/Low-code: Bubble, Xano, WeWeb, FlutterFlow, n8n, Zapier, Make → Especially powerful in early-stage MVPs and rapid PoCs.
📩 Not sure where to start? Let`s hop on a first call and create your 𝗗𝗲𝘃𝗲𝗹𝝾𝗽𝗺𝗲𝗻𝘁 𝗥𝝾𝗮𝗱𝗺𝗮𝗽 for 𝗙𝗥𝗘𝗘.
P.S. I have a friendly team of 20+ developers, so if you need a bigger team, faster delivery or just want to get a partner ready for both MVPs and scale, I`ll be the perfect choice.
ChatGPT
Python
LangChain
AI Chatbot
Chatbot Integration
Generative AI
Machine Learning
Prompt Engineering
Artificial Intelligence
LLM Prompt Engineering
Natural Language Processing
Deep Learning
Neural Network
Computer Vision
PyTorch
Mihai M.
Bucharest, Romania
$100/hr
4.9
35 jobs
I build production AI systems, full stack. Architecture through deployment, one person, no handoffs needed.
What I actually build:
LLM orchestration: multi-stage pipelines with state machines, quality gates, cost controls
RAG systems: knowledge bases from unstructured data, embedding pipelines, semantic search
AI agents and automation: tool calling, multi-agent setups, API workflows
Full stack: Python backends, Next.js/React frontends, Docker/AWS, real-time dashboards
Recently shipped a 10-stage LLM pipeline handling thousands of daily requests. Circuit breakers, checkpoint/resume, adaptive concurrency. Runs in production without paging anyone at 3am.
100% Job Success. Cambridge engineering background. I ship in weeks.
Python, TypeScript, Next.js, React, Docker, AWS, OpenAI, Anthropic Claude, LangChain, RAG, vector databases, Pydantic, FastAPI, WebSockets, web scraping.
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