Accomplished Software Developer with 13+ years of experience in Windows full-stack development, now also specializing in AI integration and LLM-powered desktop applications. I build intelligent, high-performance Windows apps that combine solid engineering fundamentals with modern AI capabilities — from embedding LLM APIs into WPF interfaces to building RAG pipelines and AI-assisted workflows. Well versed in WPF, WinUI, MAUI, Entity Framework, NoSQL/SQL databases, Cloud services (Azure, AWS), and third-party controls like Syncfusion. 🖥️ Skills ✅ Windows Desktop — WPF, MVVM, Prism (13 yrs) · WinUI, MAUI (4 yrs) 🤖 AI & LLM Integration — OpenAI API, Anthropic/Claude API, Semantic Kernel, LangChain.NET · Prompt Engineering · RAG Pipelines · Embedding-based Search · AI-assisted UI workflows 💻 Languages — C#, XAML (13 yrs) · C/C++ (5 yrs) 🌐 Web — Angular, ASP.NET Core Blazor, JavaScript (3 yrs) · .NET Core API, SignalR 🗄️ Databases — SQL Server, MongoDB, LiteDB, CosmosDB ☁️ Cloud — Azure (2 yrs), AWS 🌟 Why Hire Me? 🚀 13+ years shipping production-grade Windows applications across 80+ projects 🧠 One of the few desktop developers who can natively integrate AI/LLM features — no hacky workarounds, clean architecture 🎨 Strong Design & UX sensibility that speeds up the development cycle 🎓 Certified by HP (Enterprise Applications) and NIIT (Advanced Microsoft Stack) 🤝 Flexible schedule, responsive communication, and delivery you can count on

Your project will be built with robust, scalable solutions using: - React & JavaScript - C# / .NET - SQL Server - Entity Framework I believe great development isn't just about code — it's about communication. I take the time to fully understand your requirements, keep you updated throughout the project, and deliver work with genuine care and attention to detail. If you're looking for a developer who treats your project like their own, let's talk. Send me a message and let's discuss how I can help bring your vision to life.

I have more than 15 years of programming experience. As a freelancer, I have broad experience: I developed web (ASP.NET, Python, PHP), desktop (C++, C#, Python — Linux and Windows) and mobile (Android — Java, C++) applications. I list here some of my jobs. C#: * clubspeed.com — a large software suite for family entertainment clubs; included C# code (80%), including CoreApi and ASP.NET Razor, plus PHP (Laravel) and Node.js code (for low-level car racing control tasks). I developed it as a team member. * qadra.com — a financial company; C# code (80%), Python (some microservices are Python/Flask based, 20% of code), AWS-hosted with Docker containers and Lambdas. I developed it as a team member. * enven.nl — implemented from scratch their non-public partners portal: ASP.NET Razor and some CoreApi endpoints. * ASP.NET website for house rentals. * ASP.NET website for remote control of a robotic device via a WebSocket connection. * Vegetable-oil plant automation desktop program (C# + WinCC). Python: * Embeddable fact-checking chat that uses the LangGraph framework to implement a customizable LLM/AI backend (OpenAI, DeepSeek, Hugging Face, or Ollama). It allows administrators to embed the component in their websites so users can ask questions about facts described in articles and verify whether facts listed in an article are true. It included agentic code and many external APIs to check facts (not just asking an LLM), and even computer vision to inspect website photos (OpenCV). Backend is FastAPI. * AI/LLM-based ad selection for a website (FastAPI and LangGraph). It processes website text or chat messages and selects ads of different types related to the content. It contains SDKs for embedding ads on many platforms, including Go, React, and plain HTML. * Polish-language training software, based on Django and LangGraph. * Many small projects: desktop scripts, web scraping (Selenium and related tools), and simple AI agents. C++: * Factory equipment monitoring system (Ubuntu Linux, custom server over TCP/IP, web interface in PHP). * Many small projects, some of which are mentioned in reviews on this profile; many are non-public. * Powerful software for automated ad submission on social networks (massive bots that send millions of messages). PHP: * 20+ websites — without CMS, with my own CMS, and with open-source Drupal, WordPress and Joomla CMSs. * Backends for Android applications. Android: * SOCKS5 proxy application that allows sharing mobile VPN with non-mobile clients via the SOCKS protocol. * Many WebView-based "business card" applications. * Dating-related applications, including erotic puzzles. Human emulation: * Spam bots — I cannot provide a specific list of such software for legal reasons. * Automatic checkout on eBay and similar websites. * PayPal automatic payments. * Data scraping, including air tickets and goods in online stores. Reverse engineering — I cannot provide a specific list of reverse-engineered software for legal reasons. * Java bytecode reverse engineering, including Android. * .NET bytecode reverse engineering. * Machine code for 32-bit and 64-bit x86 and ARM CPUs. Assembler: * High-performance cryptographic library for x86\_64 CPUs.

I am a professional Technical Writer with over 6 years of experience specializing in creating clear, comprehensive, and user-friendly documentation for cloud technologies, with a strong focus on AWS (Amazon Web Services). I excel at transforming complex technical concepts into accessible content for developers, DevOps engineers, system administrators, and non-technical stakeholders. My core expertise lies in producing high-quality AWS cloud documentation, including architecture diagrams, API references, user guides, deployment manuals, troubleshooting guides, and knowledge base articles. ### Technical Expertise: - **AWS Cloud Documentation**: Deep experience with AWS services such as EC2, S3, Lambda, VPC, RDS, IAM, CloudFormation, and more. I document infrastructure as code, serverless architectures, security best practices, and cost optimization strategies. - **Programming & Development Knowledge**: Strong hands-on understanding of multiple programming languages, allowing me to write accurate and in-depth code examples, API documentation, and developer guides. - C and C++ (system-level programming, performance optimization, embedded systems) - Java (enterprise applications, Spring Boot, microservices) - Python (scripting, automation, data processing, AWS Boto3 SDK) I can effectively document SDKs, libraries, REST APIs, CLI tools, and complex software systems because I understand the code behind the cloud infrastructure. ### What I Deliver: - Professional AWS Well-Architected Framework documentation - Developer portals and API references - Technical blogs, whitepapers, and how-to guides - Migration and integration documentation - Video script writing and tutorial content I combine strong writing skills with genuine technical depth, ensuring your documentation is not only accurate but also genuinely useful for your target audience. Whether you need end-to-end cloud documentation for a new product, API docs for your SaaS platform, or modernization of existing AWS technical content, I deliver high-quality work that reduces support tickets and improves user experience. Ready to make your AWS cloud solutions and technical projects easier to understand and adopt? Let's discuss your documentation needs.

Hi there, my name is Weverson Barbieri, ● Bachelor’s degree in Business Administration and Automotive Systems Technology, with proficiency in English, multiple training and specialization courses in technology, and over six years of experience in large national and multinational companies. ● Skilled in IT project management, serving as a direct interface with stakeholders to gather requirements and develop new features/solutions, ensuring that all activities are executed according to the agreed scope and delivered with quality to the end user. ● Proficient in developing interactive front-end applications using Streamlit, enabling rapid prototyping and deployment of data-driven tools. Passionate about transforming raw data into actionable insights through automation and intuitive user interfaces. ● Strong experience in Python programming using pandas, streamlit, jupyter, pdfplumber, and Pyinstalled. Skilled in building efficient data pipelines and cleaning routines for complex datasets. Experienced in version control using Git and GitHub, ensuring collaborative development, code integrity, and streamlined project management. Passionate about transforming raw data into actionable insights through automation and intuitive user interfaces. ● Expert in diagnosing electrical and electronic failures in ECUs for engine, body, and transmission management in American vehicles. ● Deep understanding of automotive network communication protocols, such as CAN BUS, CAN BUS sniff and LIN. ● Proficiency in DTCs (Diagnostic Trouble Codes) and their respective circuits. ● Comprehensive understanding of electrical schematics, input/output signals, sensors, actuators, pinouts, and ECUs. ● Programming portfolio available on GitHub: weversonbarbieri and hydra-code-repository I invite you to look at my profile, and let’s do something great together.

I am Parminder a passionate developer who lives and breathes Microsoft technologies and related frameworks. Coding isn't just a job for me; it's a genuine love and lifelong pursuit. I am always eager to take on new challenges and push the boundaries of what I can build. My areas of expertise include: Microsoft Technologies: ASP.NET, MVC, WinForms, WPF, Entity Framework, DDEX, Dapper, Spotify Front-End: AngularJS, React, HTML5, CSS3, Bootstrap 3, JavaScript, jQuery CMS & E-Commerce Platforms: NopCommerce, Umbraco, DNN, WordPress Mobile Development: Xamarin, Kotlin Cloud & Backend: Azure, AWS, Node.js Databases: MySQL, MongoDB, SQLite Other Technologies: Laravel, PHP, Spotify API integration, HIPAA I take pride in delivering clean, efficient, and scalable solutions. I work tirelessly to ensure complete satisfaction for every client. My approach is simple: quality work, open communication, and a results-driven mindset. I believe every project is a new challenge, and every challenge is a step toward success. Let’s build something great together! Cheers, Parminder Singh

I have Expert-Vetted Talent (EVT) badge - it's Upwork's top 1% freelancers — pre-screened by Upwork Talent Managers and experts in their field. Out of ~30 million programmers worldwide, only a few thousand know Algorithms & Data Structures better than I do, which is proven by programming competitions. Please, contact me if you need that skill level (top 0.01%). I can do algorithmic/performance work in C/C++, Python, SQL, Java, MQL4, MQL5, C#, Assembly, JavaScript, Julia, Rust, and probably other languages - learning them rapidly. I also work with AI, mostly in NLP and NLU: large language models including OpenAI GPT-3, Bloom, BloomZ, GPT-J 6B, LLaMA, Alpaca, etc.; HuggingFace Transformers, Accelerate; Petals, Deepspeed, zfp/zfpy; CUDA, CPU, and MPS (AArch 64 M2 MacOS Metal GPU) backends. I have some work experience with Apple Neural Engine (ANE). In AI, I also worked with XGBoost for predictions (including trading), LibSVM, TensorFlow, PyTorch, Scikit-learn, etc. I have the hardware in my home office for training and inference with large language models and other AI. English: C1 (Grammarly plugin says I use more unique words than 95% of other users, native speakers included). Polish: B1 (86%). Russian, Belarusian: Native. - With unique skills in Algorithms & Data Structures, I improve programs asymptotically (often 100 or more times on large input data). - 29 years of programming (started Basic and assembler on ZX Spectrum), 24 years of C/C++, 16 years of commercial work experience + 3 years of research projects. - Contributed to widely used Open Source projects: LLVM/Clang (my contribution is XRay profiler on ARM32 and AArch64 systems), Katana Graph (multiple small contributions mostly driven by the proprietary part where I do GPU/CUDA), CBMC "C Bounds Model Checking" (I contributed parallelized output of DIMACS formatted Boolean Satisfiability formula), oatpp (C++ web framework, I contributed bug-fixes), OWL (OptiX Wrapper Library, I contributed build fixes for Ubuntu), Galois (research project for distributed computations on graphs, I contributed GPU improvements) - Actively participated in bug reporting and reproduction (for NVIDIA CUDA, Cadical&kissat boolean satisfiability solver, JBOSS, MariaDB, Tensorflow, Linux, etc) - Led several open-source projects of my own: ProbQA (a video game recommendation system based on a high-performance Bayesian inference engine with CUDA, SIMD, and multi-threading); InSoAr (automatic reconstruction of software architecture from source code ), a multi-threaded Boolean Satisfiability solver, etc. Working for hire, implemented: - efficient multi-threading, scaling real-world workloads almost linearly with the number of CPU cores (128x for AMD Ryzen Threadripper 3990X) - SIMD vectorization (SSE/AVX), up to 8x improvement in computing thread or even copying (see my "Faster alternatives to memcpy" answer on Stackoverflow, URL upon request). - cache-aware algorithms: up to 50x improvement on some workloads - up to 20 trillion operations/second in CUDA (thousands of times faster than CPU) - up to the theoretical limit (6.8 Gigarays/second on RTX 2080 laptop GPU) in ray-tracing with OWL and OptiX - AVX512 and RTM (Restricted Transactional Memory) based acceleration, 16x improvement for float numbers -up to 20x improvements to cryptocurrency miners on CPU using AVX512 and cache-friendly algorithms - crypto-miners for Ethereum, Bittensor, Qubic 15K reputation on Stackoverflow: (1915854/serge-rogatch) Topcoder SRM score: 1480 - among top 5K programmers in the world - top 0.02% (rSerge) I developed all kinds of networking applications, from Linux Kernel modules up to Web applications. The majority of work was, of course, done at TCP/IP level with socket calls like send/recv/select. Programming languages: C++, C++11/14/17/20, C, Python, x86/x64/ARM/AArch64 assembly, SQL, C# .NET, JavaScript, HTML, CSS, Java, MQL4, MQL5, XML, Cypher, Rust. Libraries/Frameworks: PyTorch, Tensorflow, HuggingFace Transformers/Accelerate/Safetensors, Hivemind/Petals, OpenAI, tiktoken, Django, Flask, STL, LibSVM, XGBoost, libcurl, Selenium, PyTorch, Transformers. Technologies: OpenMP, CUDA, SIMD (AVX&SSE, RTM), Linux Kernel Modules, OptiX/OWL, RTX, raytracing. Theory/Principles/Know-how/Methodologies: Algorithms & Data Structures, Performance Optimization, Artificial Intelligence, Multithreading, Vectorization, OOP, Low-latency, High-frequency, Blockchain. Open source code: Clang, LLVM, LLVM's compiler-rt library, Linux Kernel, a few of my own repositories, contributions to AI and Algorithm open-source projects such as Petals and CBMC. Tools/APIs/Architectures/Platforms: PostgreSQL, MSSQL, MySQL, Neo4j, MATLAB, CMake, GIT, MT4, MetaTrader 5, Conda, PyCharm. Virtual Machines / Containers: Docker, VMWare, VirtualBox, QEmu, Hyper-V. OSes: Windows, Linux, Android, macOS

By choosing to work with me — your project benefits from a developer with 7+ years of software development experience, dedicated to delivering your project efficiently, on time, and with the quality you deserve. I’ve worked with C# and .NET since .NET Framework 4.7 and have kept up with the ecosystem. I build business process automation solutions, RESTful APIs, and backend services. I handle database integration across both SQL (MariaDB, MySQL, SQLite) and NoSQL (MongoDB, Redis). I’m also proficient with Python, using it for web automation and web scraping (BeautifulSoup, Playwright, Selenium Base), UI automation, and blockchain tasks with Web3.py. I’ve delivered projects involving WinForms, ASP.NET, Playwright, and Django; scripting with Batch, Bash, and PowerShell; and setting up Linux and Windows environments, including with VirtualBox. I also implement custom strategies and indicators in Pine Script for TradingView and NinjaScript for NinjaTrader.

I'm a systems-level software engineer specializing in Rust, C++, and low-level infrastructure development. I build high-performance tools that operate close to the metal—from PostgreSQL extensions and database proxies to file system monitors and network protocol implementations. My work spans the full stack from systems programming (FUSE, Wire Protocols, libp2p) to database engineering (PostgreSQL, distributed systems) and backend development with JavaScript/TypeScript. I've delivered production solutions at Meta that reduced debugging time from minutes to seconds, built systems handling over 20,000 concurrent users, and contributed to major open-source projects, including ParadeDB. Whether you need custom database tooling, performance-critical CLI applications, or systems integration work, I create reliable and efficient solutions that scale.

𝐓𝐫𝐚𝐝𝐢𝐧𝐠 𝐁𝐨𝐭 & 𝐒𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐏𝐢𝐧𝐞 𝐒𝐜𝐫𝐢𝐩𝐭, 𝐌𝐓𝟒/𝐌𝐓𝟓, 𝐍𝐢𝐧𝐣𝐚𝐓𝐫𝐚𝐝𝐞𝐫, 𝐂#, 𝐏𝐲𝐭𝐡𝐨𝐧 Got a profitable trading strategy but need it automated into a bot or indicator that runs 24/7 without emotions or mistakes? That’s exactly what I build. I develop custom trading systems, indicators, and automation tools for Forex, Crypto, Indices, and Stocks, turning trading ideas into stable and reliable software. With 8+ years in trading technology, I build automation for MetaTrader, TradingView, and NinjaTrader, plus broker API integrations (IBKR, TastyTrade, Kalshi, and custom platforms), ML enhanced signal systems, and Python solutions for individual traders, prop firms, and signal providers. ✅ 𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐁𝐮𝐢𝐥𝐝 𝐅𝐨𝐫 𝐘𝐨𝐮 𝐌𝐓𝟒 / 𝐌𝐓𝟓 𝐄𝐱𝐩𝐞𝐫𝐭 𝐀𝐝𝐯𝐢𝐬𝐨𝐫𝐬 (𝐄𝐀𝐬) & 𝐂𝐮𝐬𝐭𝐨𝐦 𝐈𝐧𝐝𝐢𝐜𝐚𝐭𝐨𝐫𝐬 • Fully automated strategies based on your exact rules • Trade management: BE, partials, scaling in/out, trailing logic • Risk management by lot size, % balance, equity, or max daily loss 𝐓𝐫𝐚𝐝𝐢𝐧𝐠𝐕𝐢𝐞𝐰 𝐏𝐢𝐧𝐞 𝐒𝐜𝐫𝐢𝐩𝐭 𝐈𝐧𝐝𝐢𝐜𝐚𝐭𝐨𝐫𝐬 & 𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐢𝐞𝐬 (𝐯𝟓/𝐯𝟔 𝐬𝐭𝐲𝐥𝐞) • Custom signal indicators (trend, SMC, Wyckoff, ICT, VSA, liquidity) • Strategy backtesting with entries, SL/TP, and performance stats • Alerts for TradingView (webhook, email, app alerts) 𝐂𝐫𝐲𝐩𝐭𝐨 & 𝐀𝐏𝐈-𝐁𝐚𝐬𝐞𝐝 𝐓𝐫𝐚𝐝𝐢𝐧𝐠 𝐁𝐨𝐭𝐬 • Python bots for Binance, Bybit and other exchanges • REST / WebSocket integration for live order execution • Spot and futures, grid bots, DCA bots, custom logic bots 𝐁𝐫𝐨𝐤𝐞𝐫 & 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 • Interactive Brokers (IBKR): automated execution, portfolio tracking, live dashboards • TastyTrade, Sterling Trader, ThinkorSwim: options and equities strategy automation • Kalshi and Polymarket: prediction market trading bots with custom logic • Custom platforms and proprietary broker APIs: REST, WebSocket, FIX protocol integrations 𝐍𝐢𝐧𝐣𝐚𝐓𝐫𝐚𝐝𝐞𝐫 & 𝐃𝐞𝐬𝐤𝐭𝐨𝐩 𝐓𝐫𝐚𝐝𝐢𝐧𝐠 𝐓𝐨𝐨𝐥𝐬 • NinjaTrader 8 indicators and strategies • Orderflow, footprint, and custom signal modules • Windows desktop tools in C# / .NET for analysis and automation 𝐌𝐋-𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 & 𝐀𝐈-𝐃𝐫𝐢𝐯𝐞𝐧 𝐓𝐫𝐚𝐝𝐢𝐧𝐠 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 • ONNX model integration into live MT5 / NinjaTrader strategies (XGBoost, neural nets, custom classifiers) • Python ↔ C# / MT5 bridges for real-time ML signal pipelines (TCP sockets, named pipes, file-based exchange) • LLM-assisted confirmation layers for high-conviction setups (OpenAI / Claude API integration) • Feature engineering and training pipelines for your historical data, with deployment-ready inference code 𝐑𝐢𝐬𝐤, 𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 & 𝐃𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬 • Trade log analyzers and performance tracking • Equity curve / drawdown dashboards • Telegram / Discord / Email alert integrations 🧠 𝐖𝐡𝐲 𝐓𝐫𝐚𝐝𝐞𝐫𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 I understand both trading and coding I speak your language: entries, SL/TP, RR, ICT concepts, liquidity, sessions, SMC, etc. I don’t “approximate” logic; I implement your rules exactly as you define them. 𝐄𝐱𝐚𝐜𝐭 𝐋𝐨𝐠𝐢𝐜, 𝐍𝐨 𝐆𝐮𝐞𝐬𝐬𝐰𝐨𝐫𝐤 I follow your strategy step-by-step and document how every rule is coded. If something is unclear, I ask before implementing so behaviour is 100% expected. 𝐂𝐥𝐞𝐚𝐧, 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐞𝐝, 𝐚𝐧𝐝 𝐓𝐞𝐬𝐭𝐞𝐝 𝐂𝐨𝐝𝐞 All projects are structured, readable, and tested on historical and/or live data (as allowed by the platform) before delivery. 𝐋𝐨𝐧𝐠-𝐓𝐞𝐫𝐦 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧 I’m available for maintenance, updates, improvements, and scaling from v1 MVP to fully refined production systems. 🔧 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 & 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 Languages: MQL4, MQL5, Pine Script, Python, C#, .NET Trading Platforms: MetaTrader 4/5, TradingView, NinjaTrader 8, Sterling Trader, ThinkorSwim Broker & Exchange APIs: Interactive Brokers (IBKR), TastyTrade, Binance, Bybit, Kalshi, Polymarket ML & AI: ONNX Runtime, XGBoost, scikit-learn, OpenAI API, Claude API Integration: REST, WebSocket, FIX protocol, JSON, webhooks, Telegram/Discord bots, desktop utilities 🚀𝐋𝐞𝐭’𝐬 𝐭𝐮𝐫𝐧 𝐲𝐨𝐮𝐫 𝐭𝐫𝐚𝐝𝐢𝐧𝐠 𝐢𝐝𝐞𝐚 𝐢𝐧𝐭𝐨 𝐚 𝐟𝐮𝐥𝐥𝐲 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐛𝐨𝐭, 𝐢𝐧𝐝𝐢𝐜𝐚𝐭𝐨𝐫, 𝐨𝐫 𝐬𝐭𝐫𝐚𝐭𝐞𝐠𝐲. Share your rules (even if they’re in plain English or screenshots), and I’ll help you convert them into a reliable trading system that runs exactly as you intend.