I am a Senior Quantitative Developer with many years of experience helping traders, hedge funds, proprietary firms, and financial technology companies build reliable algorithmic trading systems, quantitative research platforms, and automated execution solutions. I specialize in Python-based algorithmic trading development, combining software engineering, quantitative research, financial data analysis, strategy development, backtesting, optimization, and live trading automation. I build complete trading systems that transform ideas into structured, testable, and production-ready solutions across equities, futures, options, forex, and cryptocurrency markets. My expertise covers the full quantitative development lifecycle — from analyzing trading concepts and processing market data to designing strategies, validating performance, implementing execution logic, and deploying automated systems. I have experience converting discretionary approaches, including price action concepts such as Brook Price Action Trading logic, into systematic algorithms that can be measured, tested, and improved using historical market data. I focus on developing trading systems that survive real-world market conditions. My process includes realistic backtesting, transaction cost analysis, slippage modeling, risk management, parameter optimization, and statistical validation to reduce overfitting and improve strategy robustness. What I Build - Algorithmic Trading Systems - Python Trading Bots and automated execution platforms - Price Action Trading Algorithms and strategy automation - Trading Strategy Research and Backtesting Frameworks - Market Analysis Tools, Screeners, and Trading Dashboards - Broker and Exchange API Integrations - Risk Management and Portfolio Monitoring Systems - Machine Learning Models for Financial Markets 📈 Core Tech Stack 💻 Languages: Python, C++, SQL 🐍 Python: Pandas, NumPy, Scikit-learn, TensorFlow, Matplotlib, Seaborn, Plotly, Streamlit 📊 Quant Development: Algorithmic Trading, Quantitative Research, Financial Modeling, Statistical Analysis, Time-Series Analysis, Feature Engineering 📉 Backtesting: Backtrader, VectorBT, Backtesting.py, Custom Backtesting Engines, Walk-Forward Testing, Monte Carlo Simulation 🤖 Machine Learning: Classification, Regression, XGBoost, LightGBM, Predictive Analytics, ML for Financial Markets 🔌 Trading APIs: Interactive Brokers API, Alpaca API, Binance API, Coinbase API, Bybit API, REST APIs, WebSocket APIs 🗄️ Infrastructure: PostgreSQL, TimescaleDB, SQLite, Redis, DuckDB, Parquet, Docker, Linux, Git, GitHub 📱 Platforms: TradingView Pine Script, MetaTrader MQL5, ThinkScript, C# 📊 Domain Expertise • Quantitative Developer | Algorithmic Trading Systems • Python Trading Developer | Financial Software Engineer • Trading Strategy Developer | Quant Research Engineer • Price Action Algorithm Development • Backtesting Framework Development • Financial Data Analysis and Market Research • Machine Learning Trading Systems • Broker API Integration and Execution Automation • Risk Management Systems and Portfolio Analytics • Crypto, Forex, Stock, Futures, and Options Trading Software 💡 Why Clients Choose Me - Experienced quantitative developer building systems from research to live deployment - Strong combination of Python development, data science, and financial market knowledge - End-to-end workflow: Market Data -> Strategy Research -> Backtesting -> Optimization -> Execution - Focus on robust validation instead of unreliable backtest results - Clean, scalable, and maintainable code for long-term development - Experience with automated execution, monitoring, risk controls, and production infrastructure 📊 Keywords Quantitative Developer, Algorithmic Trading, Python Trading Bot, Trading Strategy Development, Financial Modeling, Quant Research, Algorithm Development, Backtesting, Strategy Optimization, Machine Learning Trading, Financial Data Analysis, Trading Automation, Broker API Integration, Risk Management Systems, Portfolio Analytics, TradingView Pine Script, MQL5, MetaTrader, Interactive Brokers API, Crypto Trading Bot, Forex Trading Systems, Stock Market Algorithms, Futures Trading Systems, Options Trading Systems, Python Developer, Data Science, Time-Series Analysis, Statistical Analysis, Production Trading Infrastructure, Quantitative Finance.

I build full-stack automation systems, API integrations, serverless backends, data pipelines and AI-assisted business workflows. My work can cover the complete delivery path—from an operator dashboard and API layer to databases, queues, background workers, cloud infrastructure, testing and client-ready documentation. I use Python, TypeScript, Node.js, Next.js, FastAPI, AWS, PostgreSQL/Supabase, Docker, n8n and modern AI APIs to turn manual or fragile operations into structured, maintainable systems. What I build: ▸ Full-stack automation systems Internal dashboards, administrative tools, campaign interfaces and operational workflows using Next.js, TypeScript, Node.js, Python and PostgreSQL. I can deliver both the user-facing interface and the backend systems that power it, rather than leaving you to coordinate separate front-end and backend developers. ▸ AI-assisted workflows Controlled use of Claude and GPT for classification, extraction, summarisation, routing, draft generation, decision support and human-in-the-loop review. I treat an LLM as one component inside a reliable business process—not as a magic box expected to manage everything by itself. ▸ API and webhook integrations REST APIs, webhooks, authentication, retries, idempotency, structured logging, validation, error handling and data normalisation. Integrations can include Airtable, Google Workspace, Stripe, Shopify, Slack, Twilio, OpenAI, Anthropic Claude and custom platforms. ▸ AWS serverless and backend engineering AWS Lambda, API Gateway, Amazon SQS, DynamoDB, PostgreSQL, background workers, rate limiting, dead-letter queues, event processing and deployment infrastructure. I focus on systems that remain predictable under duplicate events, retries, partial failures and changing workloads. ▸ n8n and workflow automation Reusable n8n workflows with clear triggers, API nodes, Code nodes, validation, error routes, structured logs and maintainable handover documentation. I avoid fragile visual spaghetti and design workflows that another person can understand and operate. ▸ Python automation and data processing CSV, Excel and PDF workflows, scheduled jobs, reporting tools, data validation, back-office utilities and repeatable processing pipelines. ▸ Web scraping and structured data extraction Maintainable Python-based extraction systems for public websites, dynamic pages and messy real-world data sources. Deliverables can include deduplication, validation, retry handling, polite rate limits, structured CSV or Excel output and clear re-run instructions. Recent engineering work: • Designed and built a production-oriented Twilio Conference orchestration reference implementation using TypeScript, AWS Lambda, API Gateway, SQS, DynamoDB, PostgreSQL, Next.js, Docker and AWS CDK. • The independently audited release passed 573 tests and completed a deterministic simulation of 15,000 transfer pairs with zero pair-integrity violations. No real telephone calls were made; the simulation measured application-side orchestration. • Delivered a Python data-collection system that converted public directory information into verified, structured CSV and Excel outputs for an international client. • Created implementation-ready automation packages covering architecture, technical requirements, validation scripts, deployment guidance and client handover materials. Why work with me: ▸ End-to-end delivery I can handle the interface, backend, integrations, infrastructure, testing and documentation as one coherent system. ▸ Lightweight by default I build the smallest reliable solution that solves the actual problem. I will not introduce an oversized framework when a focused service or workflow is enough. ▸ Reliability-focused I design for duplicate events, retries, validation failures, partial outages and safe recovery—not merely the happy-path demonstration. ▸ Documentation-first I provide clear written updates, architecture notes, setup instructions, testing evidence, acceptance criteria and practical handover documentation. ▸ English and Japanese support I can work with English and Japanese requirements, websites, data and documentation. I work particularly well with asynchronous, written communication. Core stack: TypeScript, Node.js, Python, Next.js, FastAPI, PostgreSQL, Supabase, AWS Lambda, API Gateway, Amazon SQS, DynamoDB, Docker, n8n, Playwright, pandas, REST APIs, webhooks, Twilio API, OpenAI API and Anthropic Claude API. To get started, send me a short description of the process, system or integration you need. I will respond with a practical scope, architecture recommendation, assumptions and proposed delivery plan.

I’m a full-stack developer with 10+ years of experience creating web apps and mobile apps. I specialize in “vibe coding” – building solutions that feel seamless, efficient, and intuitive, while integrating AI to automate and enhance user experiences. 🔹 Core Skills & Expertise AI & Automation: OpenAI, Claude, DeepSeek, custom AI workflows Backend: Laravel (PHP), Node.js, FastAPI (Python), Go Frontend: React (Next.js, Redux), Vue 3 (Pinia/Vuex), React Native DevOps & CI/CD: Docker, Kubernetes, Drone, Jenkins, scalable automated pipelines Databases: MySQL, PostgreSQL, Redis Real-Time & Protocols: WebSocket, SocketIO, MQTT 🔹 What I Can Deliver End-to-end MVPs and SaaS platforms with clean architecture AI-enhanced web and app integrations that automate workflows Vibe coding experiences – intuitive, maintainable, high-performance code Clear communication and documentation for seamless collaboration

Senior Python & Django Architect with 15+ years of experience. I help businesses build, scale, and stabilize complex backend systems. I specialize in transforming messy codebases into robust Django architectures, integrating modern AI pipelines, and optimizing Cloud infrastructure. I don't just write code; I act as a technical partner, consulting clients on high-load Django development, database optimization, and secure API design using Django Rest Framework (DRF). My Core Focus: - Advanced Django Development: Architecting modular monoliths and microservices using Django & Python 3.12+. I solve performance bottlenecks (N+1 queries, slow views) and ensure your Django backend can handle millions of requests. - Cloud & DevOps: deploying scalable Django applications to AWS (Lambda, ECS) and Google Cloud (App Engine, Cloud Run). I set up CI/CD, Docker, and Kubernetes for zero-downtime deployments. - AI Integration: Bridging Django backends with LLMs (Gemini, OpenAI, Anthropic) and Vector Databases (pgvector, Pinecone) to build intelligent RAG systems. - Fintech & Trading: Building secure transactional systems and algorithmic trading bots using Python, Django, and Backtrader. Technical Stack: - Languages: Python (Expert), Javascript, Golang. - Frameworks: Django, Django Rest Framework (DRF), FastAPI, Flask. - Frontend: Vue.js, AngularJS (Full-stack capability). - Databases: PostgreSQL (Complex SQL, Optimization), MongoDB, Redis, DynamoDB. - Cloud: Google Cloud Platform (GAE, Cloud Run), AWS (Lambda, SQS, SNS). - DevOps: Docker, Kubernetes, Ansible, Terraform. - Trading: Backtrader, TradingView (PineScript), Bybit API, MT5. If you need a Senior Engineer to take ownership of your Python/Django project, fix architectural issues, or scale your infrastructure - let's talk.

Hi! I'm WenCan Nie, a Finance Engineering student specializing in quantitative analysis and Python-based financial research. WHAT I DO: • Python Data Analysis — pandas, numpy, akshare, yfinance for cleaning, transforming, and analyzing financial datasets • Backtesting & Strategy Testing — building and testing trading strategies using backtrader and custom Python scripts • Multi-Factor Models — Fama-French 3/5 factor, CAPM regression, alpha/beta decomposition • Financial Research Reports — portfolio analysis, fund performance evaluation, industry research • Statistical Modeling — EViews econometrics, time series analysis (ARIMA, GARCH, VAR) TOOLS & SKILLS: Python (pandas, numpy, scipy), EViews, akshare, backtrader, Excel/VBA WHY WORK WITH ME: • Academic-grade rigor — I've competed in national-level finance competitions (East Money Cup National First Prize) • Fast turnaround — I understand deadlines and deliver clean, well-documented work • Clear communication — I respond promptly and keep you updated throughout • Detail-oriented — every calculation is verified, every chart is publication-ready I'm building my Upwork reputation, so I offer competitive rates for high-quality work. Let's discuss your project!

I'm many things you want. I am a project manager during normal hours or a software developer if you need me to be. I'm here to help with whatever you're looking to accomplish, whether it be websites, software, applications, or any other programming services you require. - I'm experienced in Python, Assembly, React, React Native, C#, C++, MySQL, WordPress, HTML, Java, and many more. Chances are - if you can name it, I can build it. - I will fully manage and develop your project from start to finish, delivering the highest quality of work possible. I'm everything you need to make your passion come to life. I will be the boost your project needs to be successful. - As I am transitioning to freelancing full-time, I'm available for several hours on most days. You can expect me to devote time to your projects fully. - I believe that success requires constant communication, so you can expect me to update on the progress being made frequently.

I am a professional financial trader with over 20 years of experience across various roles, including trader, dealer, broker, and analyst. My background spans multiple asset classes with a focus on U.S. equities, options, and futures markets. I can help you with: ✅ Developing custom trading strategies based on your ideas or market concepts ✅ Backtesting and optimizing existing strategies using Python (Pandas, NumPy, TA-Lib, Backtrader, etc.) ✅ Building simulation environments to evaluate performance and risk ✅ Translating discretionary strategies into algorithmic logic ✅ Creating reports, visualizations, and performance metrics Whether you need a quick validation of your trading idea or a full pipeline from strategy to execution-ready code, I deliver results that are clear, robust, and grounded in real-market conditions. Let’s connect and bring your trading ideas to life.

Looking to optimize your trading strategies? I develop high-performance, automated trading systems using NinjaTrader, TradeStation, CTrader, Quantconnect, Python, MetaTrader, Pine Script, and more. My work has helped high-profile clients achieve superior execution and profitability. I have worked with 🌟High Profile Clients/Organizations🌟 and have professional experience working at an Algo trading desk. ✔ Proven Expertise – 10+ years of experience in Quantitative Trading, Algo Development, and AI-driven trading systems. ✔ High Client Satisfaction – 100% positive reviews and repeat clients on Upwork. ✔ Cutting-Edge Strategies – I develop advanced trading algorithms using Python, Pine Script, and C++. ✔ Rapid Response & Support – I ensure fast, clear communication and ongoing support. ✔ Results-Driven Approach – My trading models have consistently delivered high Sharpe ratios & live market success. ✅ Algorithmic Trading (Pine Script, MQL4/MQL5, NinjaTrader, TradeStation, cTrader) ✅ AI/ML for Trading (XGBoost, Decision Trees, TensorFlow, Keras) ✅ Backtesting & Optimization (Backtrader, QuantConnect, Lean) ✅ High-Frequency Trading (HFT) & Market-Making Bots ✅ API Development & Integration (RESTful APIs for brokers & exchanges) Developed a Python-based trading bot with 40% ROI in live market testing. Created an ML-driven options strategy with a Sharpe ratio of 2.5+. 💬 Need a custom algorithmic trading solution? Let’s chat about how I can boost your trading performance. Click the "Hire Now" button to get started! Finder : Tradestation, TS, AgenaTrader, AT, Backtesting Python, Lean, Quantopian, Quantconnect, QuantConnect, Pinescript, PineScript, Pine Script, Quant, Quant Connect, Interactive Brokers, IB, TWS, Trader, Metatrader, Meta trader, Metatrader4, Meta trader 4, MT4, Metatrader5, Meta trader 5, MT5, Ninja Trader, NinjaTrader, Ninjatrader7, Ninja Trader 7, NT7, Ninjatrader8, Ninja Trader 8, NT8, EA, Expert Advisor, Indicator, ForEx programmer, code an Indicator, code an EA, MQL4 Programmer, MQL 4 Programmer, MQL4, MQL 4, MQL5 Programmer, MQL 5 Programmer, MQL5, MQL 5, TradingView, Trading View, cTrader, cAlgo, cBot, PineScript, PineScript

I have extensive experience in blockchain development, including expertise with Bittensor and Solana, along with a strong background in decentralized systems and cutting-edge cryptographic techniques. I have hands-on experience in creating and deploying tokens on Solana, leveraging the SPL token standard and smart contract development using Rust and Anchor framework. Additionally, I specialize in Python-based algorithmic trading systems, designing, developing, and optimizing strategies tailored to financial markets. My expertise spans quantitative analysis, data manipulation, and real-time trading automation, leveraging platforms like Alpaca, Binance, and Backtrader. By integrating Artificial Intelligence and Machine Learning into both blockchain and trading frameworks, I ensure scalability, security, and high performance—combining innovative technologies to drive impactful, real-world solutions.

I help traders and investors automate their strategies, backtests, and executions — saving hours every week and eliminating manual trading errors. With over 12 years of software development experience (C/C++ foundation) and strong expertise in Python-based trading automation, I design systems that are fast, reliable, and tailored to each trader’s workflow. Whether you need a custom trading bot, an indicator, or a fully automated trading solution, I can build it from concept to execution. Services I Offer: 💹 Trading Solutions & Automation Python-based trading bots with broker APIs (Zerodha, Angel One, Upstox, etc.) Automated strategy execution, position sizing, and order management Backtesting & optimization frameworks (VectorBT, Backtrader, Pandas) Custom indicators and alerts (TradingView Pine Script, Amibroker AFL) Integration with Telegram, Discord, Excel, or Google Sheets for signal notifications ⚙️ Custom Trading Tools Strategy dashboards and GUIs (PyQt5, Tkinter, Streamlit) Portfolio performance tracking and analytics Multi-timeframe signal generators and scanners Hybrid manual/auto trading setups 💼 Why Clients Choose Me I bring both engineering depth and trading domain understanding. My code is modular, reusable, and production-ready — not quick scripts. I focus on long-term reliability, automation efficiency, and clarity.