As a seasoned senior quant analyst, I possess a comprehensive skill set honed through extensive experience in the field. I excel in utilizing a range of powerful tools and technologies, including AmiBroker, MultiCharts, NinjaTrader, ADL TT technology, MetaTrader 5 (MT5), Python, Pine Script, Power BI, and AFL. These tools enable me to efficiently analyze intricate datasets and extract valuable insights that drive informed decisions. My proficiency in AmiBroker allows me to conduct advanced technical analysis and develop robust trading strategies. With MultiCharts, I can implement sophisticated charting and backtesting, ensuring the reliability of trading models. NinjaTrader enhances my ability to execute trades with precision, while ADL TT technology contributes to high-frequency trading strategies. I am also experienced in developing Expert Advisors (EAs) for MT5 and using Python to connect to MT5, manage accounts and positions programmatically, and automate trade execution. My expertise in Python and Pine Script empowers me to create custom scripts and algorithms for data analysis and modeling. This flexibility ensures adaptability to unique market conditions and the development of innovative trading strategies. Additionally, I leverage Power BI to visualize complex datasets, providing clear and actionable insights for stakeholders. Furthermore, my proficiency in AFL (AmiBroker Formula Language) allows me to develop and optimize trading systems within the AmiBroker platform, ensuring efficient and effective implementation of strategies. In summary, my diverse skill set, encompassing both traditional and cutting-edge technologies, positions me as a highly capable quant analyst capable of extracting meaningful insights from complex financial datasets. My ability to integrate and leverage these tools allows me to make data-driven decisions and contribute to the success of financial strategies.

• Also known as Windows and macOS App Developer Expert • 5+ years of experience • I work on backend, frontend, databases, and Linux server administration • Main stack: .NET (C# / Visual Basic) and TypeScript / JavaScript • I build web and multi-platform desktop/mobile applications 📚 Technologies • My main tech stack is .NET (C# or Visual Basic .NET) and TypeScript / JavaScript • For .NET, I work with ASP .NET, Blazor, WPF, Windows Forms, MAUI (formerly Xamarin), Avalonia UI, and more • For TypeScript / JavaScript, I prefer React, but I can also work with Angular, jQuery, or vanilla JS • I can also develop macOS and iOS apps using Swift and Objective-C 🗼 Server Administration and DevOps • Familiar with Debian-based Linux distributions like Ubuntu • Able to handle VPS baremetal or Docker-based setups • Able to automate workflows using Bash, Python, GitHub Actions, and similar tools • Experienced with cloud services such as AWS and Azure 📊 Database • Microsoft SQL Server • MySQL / MariaDB • SQLite • PostgreSQL • Microsoft Access 💡 Skills • Strong in algorithm design and analysis • Great ability to solve programming and system trouble • Great at optimizing software performance • Flexible work style • Adaptive team player 📖 Self-Update • I regularly study new technologies to stay up to date. 🕰️ Flexible Availability • Open to collaborate across multiple time zones (US, CA, UK, EU, APAC, etc.) ✅ I’m not a robot. • I’m a real human and a solo freelancer, not an agency 🙌 Let’s Connect! • My name is Junian and I’d love to help bring your ideas to life • Feel free to reach out so we can discuss how I can support your project • Not a Vibe Coder, but use AI-Assisted Programming tools to solve problems • Linus Torvalds once said, “Talk is cheap. Show me the code.” So go ahead and check out my GitHub code. 🛠️ Common Tasks and Roles • Known as the Apple / macOS / iPhone guy • Build Windows app with .NET Framework & Windows Forms (WinForms) / Windows Presentation Foundation (WPF) / WinUI / Avalonia UI / MAUI / Xamarin • Build Windows Installer MSI / EXE from existing Windows App by using Wix / WixSharp • Build macOS app with Swift UI or .NET & Avalonia UI / MAUI / Xamarin • Build, sign, and notarize macOS app installer (PKG / DMG / ZIP) • Build web app with ASP .NET & Blazor / React / Angular / Vanilla JavaScript • Deploy and configure existing web apps by using Docker container to VPS / Cloud providers like AWS, Azure, or GCP • Ethical decompile / reverse engineer / source code retrieval / deobfuscation of existing .NET EXE / DLL / MSI or NinjaTrader Trading Indicator / strategy • Automate Windows UI tasks • Web scraping to retrieve online data / PDF / Images / any other files • Expert macOS system and app troubleshooting 🙋‍♂️ What I'm not • I'm not a Vibe Coder. Don't get me wrong, I use AI to build software, but I don't solely rely on it.

I am an applied mathematician with PhD degree in computer science, software developer with 15+ years of experience. I have strong expertise in quantitative and algo trading models development on Python and C# languages. My professional field of research is financial market analysis and trading algorithms. I have 9+ years of experience in developing automatic trading strategies for different financial markets: Stocks, Options, ETF, FOREX, Crypto for the following trading platforms: -Meta trader; -Ninja trader; -QuantConnect; -Quantopian; I can apply different statistical and numerical algorithms and technics for strategy creation and analysis such as: -Portfolio optimization; -Machine learning (Decision trees, Random forest, Hidden Markov models, KNN, SVM and others); -Regression analysis; -Correlation analysis; -Autoregression models (ARMA/ARIMA); -Time variant volatility (GARCH models); -Time variant correlation (DCC-GARCH model); -Cointegration technics; -Monte Carlo simulation; and many others As a developer I have 15+ years of experience in programming on such languages as C#, Python, C/C++, MQL 4/MQL 5, Java, Mathlab, Visual Basic. I like studying new theories, technologies and software development principles, that improve my skills. Since September 2016 I am a co-founder of PriMatLab LLC, a company, that develops software for different fields of applied mathematics such as machine learning, computer vision, trading algorithms. In my portfolio on Upwork you can see a few of the programs that I’ve developed. Also you can have a look at my job history.

I build automated trading systems that run live with real capital: MT4/MT5 Expert Advisors (MQL4/MQL5), TradingView Pine Script indicators & strategies, and Python trading bots for Forex, Crypto, Gold, and prop firm traders. Most clients don't need another script. They need a developer who understands trading logic, risk, and execution as deeply as the code itself. That's where I come in - every system I ship is backtested, forward-tested, and built to survive live markets, not just produce green backtests. 🔹 What I can build for you ✅ MT4/MT5 Expert Advisors (MQL4/MQL5) - full execution bots, prop-firm-compliant EAs (FTMO-style drawdown rules), risk & money management, news/session filters ✅ Pine Script (TradingView) - custom indicators, strategies, alerts, multi-timeframe logic, non-repainting scripts, backtesting ✅ Python Trading Automation - async bots, REST/WebSocket API integration (Binance, Bybit, OANDA, Deriv, MT5), data pipelines ✅ TradingView Webhook Automation - TradingView → MT5/broker execution bridges, Telegram signal copiers, copy-trading systems ✅ NinjaTrader 8 - strategies and indicators in NinjaScript (C#), order flow and breakout systems ✅ Strategy Development & Backtesting - turning your idea into a measurable, optimized algorithmic trading system ✅ Exchange & Broker API Integrations - TradingView webhooks, exchange APIs, broker connectors, custom REST/WebSocket setups 🔹 Why clients hire me (and come back) ✔ I think in edge, risk, and execution - not just syntax ✔ Clean, well-documented, maintainable code (no spaghetti) ✔ Honest feedback - if your strategy has a flaw, I'll flag it before we build ✔ Built for live markets, not just green backtests 🔹 Recent work • Automated Polymarket trading bot (Python) for prediction-market market-making • Prop-firm-compliant MT5 Expert Advisor with multi-layer risk management • Multi-timeframe Pine Script strategies with webhook execution to MT5 • Telegram-to-MT5 signal copier handling live signals end to end 🔹 Tech stack Pine Script v5/v6 · MQL5 · MQL4 · MetaTrader 4/5 · Python (asyncio) · NinjaScript (C#) · REST & WebSocket APIs · TradingView Webhooks · Telegram Bot API · Binance · Bybit · OANDA · Deriv · PineConnector If you're serious about automating your edge and want a developer who treats your system like real capital is on the line - send me a message with your strategy or idea, and let's build something that performs.

I build trading algorithms the way a Swiss watchmaker builds gears - precise, reliable, and built to run while you sleep. For over a decade I’ve turned market noise into structured logic, crafting bots that execute faster than human reflexes and complain far less. I specialise in Python, quantitative modelling, strategy automation, and multi-exchange integration. Whether you need a market-making engine, a backtesting framework, or a stealthy bot that reacts before the candle closes, I design systems that stay sharp in any market weather. If your trading workflow feels clunky or manual, I’ll turn it into something smooth, automated, and quietly brilliant like an algorithm having a good day.

📌❗ Live web demo available in the Portfolio section - Trading Bot project. ❗📌 Experienced developer with a strong background in developing software for crypto and equity trading, building trading systems, algorithmic strategies, and automation tools I have years of hands-on experience with C#, .NET (Core & Framework), and financial APIs (FIX / REST / WebSocket), along with deep expertise in real-time trading logic, market data pipelines, and execution infrastructure. A significant part of my career has been spent as a core developer on market-leading financial platforms — always with a focus on performance, reliability, and seamless integration with broker APIs, banking systems, and trading environments. My work includes building: • Automated strategy engines based on RSI, EMA, order flow, and price action • Market data pipelines from crypto and traditional exchanges (REST/WebSocket) • Trading bots and alert handlers for Binance, Bybit, Mexc, OKX, TastyTrade, Tradier, Alpaca etc • Real-time signal processors and execution bridges for end-to-end trading workflows All with an emphasis on robustness, low-latency, and production-grade quality. ✅ 15+ years of backend / full-stack development ✅ Expert in multithreaded C#/.NET systems ✅ Built and maintained bots, strategy engines, and alert infrastructure ✅ Solid understanding of indicators, backtesting, and execution logic ✅ Code tailored for high-performance, real-time environments Let’s build powerful tools for your trading workflow.

You have a trading strategy. Maybe it's live, maybe it's just a backtest, maybe it's a TradingView script you don't fully trust yet. The hard part was never the idea, it's making it run reliably when real money is on the line. That's what I do. I take trading strategies from concept → backtest → production execution, and I build the infrastructure that keeps them running. I don't sell alpha, signals, or "guaranteed returns." I'm the engineer who makes sure your system actually executes, accurately, every time, under live market conditions. What I build - Backtesting & research platforms with realistic fills, slippage, and fees, so your results survive contact with live markets - Live execution engines, async, fault-tolerant, built to recover instead of crash - Exchange & broker integrations over REST, WebSocket, and FIX - Real-time market data pipelines and order management systems - Monitoring, dashboards, and the production infrastructure that keeps it all alive Recent work - Built a NautilusTrader-based backtesting platform with a live performance dashboard - Audited and validated a multi-market algo system across NQ futures, forex, and commodities I hold a 100% Job Success Score with consistent 5-star reviews, and most projects turn into long-term work. Platforms & connectivity - Custom Python systems, NautilusTrader, QuantConnect/Lean, MetaTrader 5 (MQL5), NinjaTrader, and TradingView/PineScript, including converting TradingView scripts into real Python execution systems. - Exchanges: Binance, Bybit, OKX, Coinbase, Bitget. Brokers: Interactive Brokers, Zerodha, Dhan, Upstox. - Prediction markets: Polymarket, Kalshi. Whatever your edge, market making, arbitrage (CEX/DEX/cross-exchange), mean reversion, stat arb, options, or ML-driven, I've built and validated it in production. I implement and harden strategies; I don't claim to invent them. Background Before freelancing, I spent 8+ years building trading systems professionally, including a live market-making system trading BTC and ETH across Binance and OKX with ~12ms execution and Deribit options hedging, plus cross-exchange smart order routing for institutional OTC flow. I bring that same production rigor to every project here, whether it's your first bot or a fund's execution stack. If you want to automate a strategy, fix a backtest you don't trust, connect to an exchange or broker, or take an existing system into production, that's exactly what I do. Tell me what you're building.

Senior Automation Engineer & Quantitative Programmer (PhD) | Python Expert Institutional-Grade Python Systems & Automation I am a PhD-level engineer with years of experience developing high-stakes technology for multiple multi-billion dollar hedge funds and a National Laboratory. I specialize in building robust, production-ready Python pipelines and automation tools, applying institutional-level rigor to every programming project. Broad Engineering Expertise Applied to Programming I leverage a deep background in Electrical Engineering, Computer Science, and Operations Research to build software that is significantly more efficient and resilient than standard scripts. My programming and automation projects are informed by: Queueing Theory & Flow Optimization: Designing data pipelines and processing engines built to handle high-volume throughput without bottlenecks. Systems & Industrial Engineering: Applying professional experience in process improvement and project management to ensure code is clean, maintainable, and highly efficient. Quantitative Research: Extensive experience developing and running live systematic trading models for futures, equities, options, and high-fidelity backtesting engines. National Lab-Grade Reliability: Drawing on my experience at a National Laboratory to build self-healing automation that connects disparate APIs, databases, and proprietary platforms. Core Project Examples My work focuses on transforming complex, manual, or fragmented workflows into centralized Python applications. Recent projects include: Institutional Backtesting Engines: Developed high-fidelity Python frameworks for futures and equities, ensuring zero look-ahead bias and realistic slippage modeling (e.g., FuturesBacktestingEngine). Automated Data Pipelines: Engineered end-to-end systems for data ingestion, cleaning, and statistical feature engineering for large-scale financial datasets (e.g., QuantDataPipeline). Portfolio Analytics & Risk Systems: Built modular tools to calculate real-time institutional metrics, including Sharpe, Sortino, Calmar ratios, and drawdown analytics (e.g., PortfolioAnalytics). Scientific Computing & Simulation: Building tools for complex modeling, data mining, and research automation including factory simulations. What I Build I specialize in Legacy System Modernization—refactoring fragmented scripts and manual processes into scalable, production-grade Python systems—and Workflow Automation, creating robust ecosystems that integrate multiple platforms and APIs into a single, automated process. I have documented my core frameworks—including my Futures Backtesting Engine, Quant Data Pipeline, and Portfolio Analytics—in the portfolio section below. I am happy to provide direct GitHub access upon request.

⭐ Top-Rated ✔️ Fluent in English 💡 Creative Problem Solver 🚀 Ai + Full-Stack Expert I build trading systems that survive live, not just backtests that look good on paper. Full trading stack, solo: data, backtesting, forward testing, live execution, and monitoring. You get one engineer who validates the strategy and builds the infrastructure around it, instead of a quant and a dev who don't speak the same language. 15+ years building production systems. I focus on the part most people get wrong: a backtest that looks great and a bot that quietly bleeds money are two very different things, and I build for the second one. What I do 🔬 - Honest backtests with real slippage, fees, and fills. No look-ahead bias, no curve-fit fantasy curves. 🛠️ - Walk-forward and forward/paper testing before real money goes in. 🤖 - Live execution bots: idempotent orders (no double-fills), auto-reconnect, rate-limit handling, drawdown kill switches. ⚡ - Exchange and broker APIs: Binance, Bybit, OKX, Interactive Brokers, Alpaca, OANDA, MT4/MT5, ccxt, FIX. 🔌 - TradingView webhook to execution, plus dashboards and Telegram alerts on every fill and error. 🖥️ - Interfaces and dashboards to control and monitor the bot: live P&L, positions, on/off controls, plus Telegram alerts on every fill and error. 🏗️ Backend systems and infrastructure built with Python, Java, and Node.js: market data pipelines, execution services, API integrations, monitoring, and automation. Good fit if you have any of these: - A strategy that needs backtesting honestly and automating - A bot that needs its live execution layer built, with reliable order routing on the exchange - A working bot that needs a proper interface or dashboard to control and monitor it - A live bot that keeps breaking and needs someone who understands execution and risk - Exchange API or market-data infrastructure to build If your strategy needs to go from idea to live without blowing up an account, let's talk.

Quant Developer | Fullstack Developer | AI Developer I am a results-driven Machine Learning Engineer and Full-Stack Developer with a strong foundation in AI/ML, Deep Learning, Natural Language Processing (NLP), and scalable system design. I bring practical experience in developing intelligent, real-time applications using Python, C, C++, Java, and Dart across both mobile and backend ecosystems. I have experience in developing AI agents using Openclaw, Nanoclaw etc Core Competencies: Machine Learning & Deep Learning: Development and deployment of models for computer vision, NLP, time-series forecasting, and predictive analytics. NLP & Generative AI: Experience building RAG pipelines, chatbots, and real-time voice assistants with Whisper, GPT, Openclaw, and open-source models. Flutter App Development: High-performance mobile apps with offline-first architecture, efficient database sync, and clean user interfaces. Backend Development: REST API design using FastAPI, Django, and Flask with secure integration of authentication, databases, and business logic. Trading Tool Integration: Automation and system development using MetaTrader 5 (MT5), TradingView (webhooks), NinjaTrader, and custom strategies. Databases & Cloud Platforms: Skilled in PostgreSQL, Firebase, Supabase, and deploying scalable systems on AWS and edge environments. I focus on delivering maintainable, high-performance systems tailored to real-world use cases—from AI-powered trading automation and mobile apps to intelligent backend infrastructure. Let’s connect to explore how I can contribute to your next project.