I'm a Python and C++ developer with 18 years of experience. I can efficiently handle a wide variety of tasks in data science, machine learning, software architecture and debugging, and more. I'm good at writing, and always prioritize clear communication in my work.
I've recently worked on a project where I developed and optimized an OpenCV+YOLO object detection pipeline in C++ on multiple real-time video streams, which is currently in production at several customer sites. I'm particularly interested in speech and audio processing, and have worked on many projects in this domain.
After graduating with a dual Bachelor's Degree in 2004, I was the lead developer of a product for distributed entity resolution and name matching at a Washington, DC area contractor for 6 years. Starting with an existing prototype and legacy C++ libraries, I combined Python and C++ to create a high-performance, distributed tool for use by data analysts. I documented the code and created automated tests, then trained several new developers who joined the team. I wrote our user documentation, and after our first release to customers, I worked with them closely to add new features and fix bugs. In writing and maintaining a high-performance distributed application I became proficient with the POSIX API including threading, the file system, and networking.
Since leaving this contractor, I have been developing my own software product for foreign language learning. It takes user input from the microphone, and uses machine learning to present appropriate study material. The product is still in development. The prototype uses Python with NumPy, SciPy, Matplotlib, and Torch, and I have become proficient in using these tools to process and explore data and develop machine learning models. I also developed a speech corpus from public domain data, aligned the transcriptions with the audio using Kaldi, and extracted spectral features to be used in my speech processing pipeline.
My dual Bachelor's is in Computer Science, and International Languages and Cultures - French. I studied computer science in Bordeaux, France for one semester and speak and write French fluently. My native language is American English. I also studied Chinese for 2 years in college, and taught English in China for one year after graduation. I speak Mandarin fluently and read and write Chinese. I have done professional translation work from both French and Chinese to English, including a translation of Xu Dan's book titled Introduction to Chinese Syntax, published by l'Asiathรจque. I have done editing and translation work for Xu Dan and other linguists on many projects over the past 18 years. In both this and my software development work, I take pride in producing high-quality work.
Python
NumPy
C++
SciPy
PyTorch
Model Optimization
Deep Learning
Natural Language Processing
Machine Learning
Data Science
Automatic Speech Recognition
Linguistics
Computational Linguistics
Scripts & Utilities
Data Mining
Keaton Z.
Mechanicsburg, Pennsylvania
$50/hr
5.0
70 jobs
AI Developer | Automation & Predictive Analytics
I build AI systems that take repetitive work off your plate and turn your data into decisions you can act on. Over 5+ years I've automated workflows that ran for hours down to minutes, shipped computer-vision models north of 97.5% accuracy in production, and built specialized models that outperform frontier LLMs on-task at a tiny fraction of the compute.
AUTOMATION
I design pipelines and AI-driven workflows that replace manual, error-prone processes: LLM-powered document processing, data ingestion and ETL, RAG/MCP integrations, and agentic systems that handle the busywork. I've cut enough of it for clients to gain multiples worth of efficiency gains.
PREDICTIVE ANALYTICS
I build forecasting, classification, and risk/scoring models that turn historical data into reliable signal - with the feature engineering, evaluation, and monitoring to keep them accurate in production, not just in a notebook.
I also handle the engineering around the models - infrastructure, security, and the supporting services that keep everything running in production. When a project calls for it, I work across NLP, computer vision, and custom model training/fine-tuning.
SELECTED RESULTS
- Automated document processing from hours to minutes with LLMs
- 97.5%+ accuracy on production computer-vision inference
- Fine-tuned a compact language model to more than 5x the on-task accuracy of a frontier LLM (GPT-5.5) while using thousands of times less compute
CORE SKILLS
- Predictive analytics & forecasting, machine learning, deep learning, LLMs, computer vision
- Workflow & data automation, MLOps, custom model training, optimization & fine-tuning
- Supervised, unsupervised (K-Means, HDBSCAN), and reinforcement learning (Stable-Baselines3)
STACK
- Languages: Python, SQL, Bash
- ML/Data: scikit-learn, PyTorch, TensorFlow, XGBoost/LightGBM/CatBoost, pandas
- Build & Deploy: FastAPI/Flask, Docker, Kubernetes, Git
I care about modular, efficient systems that keep working long after handoff - not one-off scripts that break the moment requirements shift. If you've got a process worth automating or data worth predicting from, let's talk about moving your project forward.
Python
NumPy
Machine Learning
Supervised Learning
Unsupervised Learning
Reinforcement Learning
Python Scikit-Learn
pandas
Artificial Intelligence
Neural Network
Predictive Modeling
Data Analysis
Automation
Shafi H.
Bolingbrook, Illinois
$35/hr
5.0
34 jobs
๐ฏ 100% Refund If I Set the Wrong Expectations and Canโt Deliver. No Questions Asked.
โ๏ธ Need AI automations for lead generation, outbound sales, CRM workflows, appointment setting, customer support, email automation, and scalable business operations using n8n, Make, Claude, and Python? Consider it done!
๐ง Iโve built AI agents that not only perform tasks, but learn to improve themselves within your system turning AI automation into intelligent adaptation.
โ๏ธ Little bit more about me:
Iโm an AI Automation specialist & Data Analytics Engineer with over 10 years of experience in machine learning, Python,Django, FlaskAPI and workflow automation using tools like n8n, Zapier Claude and make. I specialize in building scalable, AI-driven solutions that solve real-world problems and turn data into actionable insights. From predictive analytics to real-time dashboards.
I help organizations automate processes and rapidly build MVPs to scale. My goal is to empower businesses by providing intelligent, data-driven solutions that evolve with their needs.
โ Proven track record with 150+ AI and automation projects, driving efficiency and growth
โ Expert in AI, data analytics, and machine learning with 10+ years of experience in Python, Django
โ Certified Zapier Expert, skilled in Make, n8n, and Airtable for seamless integrations
โ Specializing in real-time data solutions and predictive models for faster decision-making
โ Delivering high-impact solutions with clear communication and scalable results
โ Focused on providing measurable ROI through custom automation and AI solutions
If you are looking for a Top-rated professional, who is in the list of Top 3% of Upwork profiles and fast and efficient delivery, then I'm your man.
What I Offer:
N8N | Zapier | Make | Replit | Python | AI | Machine Learning | AI Automation | Predictive Modeling | TensorFlow | PyTorch | Time-Series Forecasting | Recommendation Engines | Deep Learning | Generative AI | LLM | Chatbots | RAG | MVP Prototyping | Streamlit | Dash | Tableau | Power BI | Data Visualization | KPI Tracking | Trend Analysis | Performance Monitoring | Data Engineering | ETL ELT Pipelines | Web Scraping | MongoDB | SQL | Redis | FastAPI | Cloud Services | AWS | Automation | Django | ROI Optimization | Product Validation | MVP
๐ช๐ต๐ ๐๐ต๐ผ๐ผ๐๐ฒ ๐ ๐ฒ:
- 10+ years of professional Python development
- Fast communication & on-time delivery
- Flexible, reliable, and high-quality solutions
- Budget-friendly and negotiable pricing
- 100% client satisfaction is always my priority
- Available for one-time tasks or long-term collaborations
Python
LLM Prompt
Zapier
n8n
Make.com
Minimum Viable Product
AI Agent Development
Retrieval Augmented Generation
Claude
React Native
NodeJS Framework
Next.js
Healthcare
FinTech
Computer Vision
Machine Learning
Deep Learning
HIPAA
Automation
Airtable
Nathan W.
McComb, Mississippi
$50/hr
5.0
1 jobs
I help businesses, healthcare teams, researchers, and startups turn complex AI ideas into reliable software products.
I am a research-driven AI Solutions Engineer and Python backend developer with a Masterโs in Neuroscience and 6 years of experience building AI-powered applications, machine learning workflows, and research-focused software systems. My work sits at the intersection of artificial intelligence, backend engineering, data processing, and scientific problem-solving.
My strongest value is not just writing code. I help define the right technical approach, design the system architecture, build the backend, integrate AI models, and deliver software that is practical, maintainable, and ready for real users.
My core expertise includes:
- Python backend development
- Generative AI application development
- Machine learning and data workflows
- Scikit-learn, TensorFlow, Keras, NumPy, Pandas, SciPy
- Speech-to-text systems using Whisper AI
- SQL and SQLite database design
- GPU-accelerated AI inference
- Research automation and scientific computing
- Healthcare AI and clinical workflow tools
- Desktop AI applications and internal business tools
One of my key projects is VoxChart, a clinical speech-to-text dictation application built with Whisper AI, Python, PyAudio, SQLite, tkinter, and PyInstaller. It supports offline AI transcription, medical terminology correction, autosave, Epic EHR export support, crash reporting, and a Windows installer pipeline. This project reflects the kind of work I do best: turning advanced AI capability into a clean, usable tool that solves a real workflow problem.
I also have hands-on experience in computational neuroscience, reinforcement learning, and scientific modeling, including a spinal cord arm control model using Python, TensorFlow/Keras, OpenSim, and DDPG. This gives me a stronger analytical foundation than a typical software developer and allows me to work confidently on complex, data-heavy, research-driven, or AI-first projects.
I can help you with:
- Building AI-powered SaaS tools, MVPs, and internal platforms
- Developing Python backends for AI applications
- Creating custom ML models and data pipelines
- Integrating OpenAI, Whisper, or other AI systems into your workflow
- Automating manual business or research processes
- Designing databases, APIs, and AI-assisted backend logic
- Building healthcare, clinical, or research technology solutions
Clients should work with me when they need someone who can think deeply, communicate clearly, and build carefully. I care about clean architecture, accurate implementation, strong documentation, and software that remains useful after delivery.
If you need an AI solution that is more than a prototype, I can help you design it, build it, and make it dependable.
Python
Product Development
Artificial Intelligence
Web Application
International Development
MATLAB
JavaScript
Reinforcement Learning
Manuel D.
Washington, District Of Columbia
$35/hr
5.0
4 jobs
๐ท๏ธ Web Scraping, Data Extraction & Automation Specialist.
Need clean, structured data extracted from any website or API? I write custom Python scripts to scrape complex sites directly into Excel, CSV, or databasesโsaving you hours of manual work with 100% accuracy.
Whether it is e-commerce catalog scraping, directory data collection, real estate listings, financial markets, or lead list building, I can automate the process and handle challenges like dynamic content, logins, and CAPTCHAs.
With a background in IT Management (WGU) and 7 Google Professional Certifications (including Advanced Data Analytics, Business Intelligence, Project Management, and AI), I bridge the gap between technical data extraction and your strategic business goals.
---
๐ง What I Can Do For You:
- Web Scraping & Data Extraction: Custom Python scripts (Scrapy, Selenium) to scrape websites, gather prospect lists, and compile research data.
- Excel & Spreadsheet Modeling: Building clean data models, writing advanced formulas (VLOOKUP, INDEX/MATCH, Lambda), formatting, and automation in Excel and Google Sheets.
- Business Intelligence (BI) Dashboards: Custom, interactive dashboards in Power BI and Tableau to track your KPIs in real-time.
- Database Development & SQL: Write optimized queries, perform data cleaning, design relational database schemas, and build robust ETL pipelines.
- Operations & Logistics Optimization: Redesign workflows and analyze data to improve efficiency and reduce costs.
๐ My Technical Stack:
- Data Scraping: Python (Scrapy, Selenium, Beautiful Soup)
- Spreadsheets: Advanced Excel, Google Sheets
- BI Tools: Power BI, Tableau
- Databases/Querying: SQL (MySQL, PostgreSQL)
- Languages: Python (Pandas, Numpy), R
- Methodology: Agile/Scrum, Project Management
---
๐ฏ Why Clients Choose Me:
- Google Certified Expert: Certified in Advanced Data Analytics, BI, and AI.
- Business-Minded: I don't just write queries; I deliver insights that save money or grow revenue.
- Clear Communication & Transparency: Regular updates, well-documented code, and prompt responses.
Let's discuss how we can put your data to work. Send me a message today!
Python
Data Analysis
Data Extraction
ETL
ETL Pipeline
Data Mining
SQL
Microsoft Power BI
Tableau
Accounting
Excel Formula
Microsoft Excel
Google Sheets
Web Scraping
Data Cleaning
Data Entry
Dr. Jaime M.
West Palm Beach, Florida
$65/hr
5.0
24 jobs
I build trading systems that survive live execution โ not just backtesting.
27 years of C# development. 20+ NinjaTrader 8 indicators and strategies. 10+ MetaTrader 5 Expert Advisors. Python ML pipelines with walk-forward validation and ONNX deployment. PhD in Management Information Systems. Every system I deliver comes with full source code, documentation, and a walkthrough so you understand what I built and why.
I'm a developer who understands trading, not a trader who learned to code. That difference matters when your strategy needs to handle partial fills, slippage on a fast NQ breakout, or a prop firm's trailing drawdown rules.
WHAT I BUILD
NinjaTrader 8 (NinjaScript/C#): Custom indicators (regime filters, order flow, harmonic patterns, composite dashboards), automated strategies (breakout, momentum, mean-reversion, institutional zone detection, volatility compression), advanced trade management (multi-target exits, ATR-scaled trailing, break-even, time-based exits, re-entry logic), full parameter exposure for Strategy Analyzer optimization, and data export pipelines for ML model training.
MetaTrader 5 (MQL5): Expert Advisors for live and prop firm environments. Box breakout (6 versions), volatility compression straddle, Heiken Ashi exhaustion, multi-strategy EAs. Session filtering, spread guards, prop firm compliance (drawdown limits, daily loss caps, consistency rules, magic number management), and risk-based position sizing.
Python ML Pipelines: XGBoost, LSTM, Transformer, and MLP models for session-type prediction, directional forecasting, and signal filtering. Walk-forward validation, SHAP explainability on every prediction, Monte Carlo stress testing (10,000 equity paths), and ONNX export for sub-millisecond inference inside NinjaTrader.
Pine Script (TradingView): Multi-timeframe systems with non-repainting architecture, state-based logic, session-aware execution, and liquidity sweep / SFP detection.
Cross-Platform: Strategy porting (NT8 โ MT5 โ ATAS โ DAS Trader โ Python), cross-platform signal routing across 5 simultaneous platforms, and broker API integration (Interactive Brokers TWS API, Rithmic, MetaTrader broker API).
FLAGSHIP BUILD: IMBOne Cortex
The most complex system in my portfolio โ a quantitative trading intelligence platform I architected and built end-to-end as sole developer. WPF/.NET 9, 7 server projects, 30+ table MySQL database, SignalR real-time streaming, Redis caching layer.
Core systems: real-time data engine processing 100K+ market data messages/min via Polygon WebSocket. Dark pool level detection (FINRA data, 4-tier classification). Gamma exposure engine (DIY from raw options chain data โ zero vendor dependency). Pre-market scanner screening 8,000+ equities. ML pipeline with XGBoost classifiers (session-type F1=0.736, IB-direction F1=0.727), nightly automated retraining, SHAP explainability rendered in-app, and ONNX Runtime inference. 40+ engineered features.
If I can build this solo, I can build what you need.
SELECTED RESULTS
โธ Institutional Zone Breakout (NQ) โ Sharpe 2.30, 53.9% WR, 668 trades
โธ ICT Liquidity Sweep โ Sharpe 4.81, PF 1.93
โธ Box Breakout EA (v6.5) โ directional bias model, 82% AUC
โธ EURCHF ML Pipeline โ walk-forward validated, mean Sharpe 4.02, all folds positive
โธ 80% Rule Debunk โ 5+ years NQ data, measured 18.3% vs. claimed 80%
โธ Level Touch Probability โ distance gravity model, AUC 0.78โ0.85
โธ NQ Breakout Pipeline โ MBO-10 microstructure, absorption signal identification
HOW I WORK
Understand your strategy logic and goals before writing code
Build clean, documented, configurable code โ every parameter exposed
Validate rigorously โ walk-forward, Monte Carlo, statistical significance testing
Deliver full source code + performance report + walkthrough session
All client strategy code treated as confidential. NDA available. Your edge is yours.
PROP FIRM EXPERIENCE: Systems designed for Tradeify, TopStepX, and similar environments. Trailing drawdown, daily loss limits, consistency rules. Risk controls enforced independently from strategy logic โ the risk layer has absolute veto authority.
TECH STACK: C# (27 yrs) ยท NinjaScript ยท MQL5 ยท Python ยท Pine Script ยท XGBoost ยท LSTM ยท SHAP ยท ONNX Runtime ยท SignalR ยท MySQL ยท Redis ยท Databento MBO-10 ยท Polygon API ยท Rithmic ยท IB TWS API ยท pandas ยท NumPy ยท scikit-learn
PhD ยท 27 years C# ยท 17 years university teaching (I explain what I build โ you'll understand your own system) ยท Bilingual English/Spanish ยท South Florida (EST)
Let's build something that works in live markets, not just in backtesting.
Python
.NET Framework
C#
.NET Compact Framework
English
Content Writing
Machine Learning Algorithm
Trading Automation
Machine Learning
Trading Strategy
AI Trading
Forex Trading
NinjaTrader
MetaTrader
Bot
Algorithms
Inventory Management
Microsoft Visual Studio
Castilian Spanish
Project Management
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
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 Python Numpy Developer in the United States on Upwork?
You can hire a Python Numpy Developer in the United States on Upwork in four simple steps:
Create a job post tailored to your Python Numpy Developer project scope. We'll walk you through the process step by step.
Browse top Python Numpy Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top Python Numpy Developer profiles and interview.
Hire the right Python Numpy 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 Python Numpy Developer?
Rates charged by Python Numpy 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 Python Numpy Developer in the United States on Upwork?
As the world's work marketplace, we connect highly-skilled freelance Python Numpy Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Python Numpy Developer team you need to succeed.
Can I hire a Python Numpy Developer in the United States 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 Python Numpy Developer proposals within 24 hours of posting a job description.
Find more freelancers
Top states for Python Numpy Developers in the United States