"I am an embedded systems engineer with substantial experience in programming languages like C, C++, VHDL, Verilog, Java and Python. My expertise extends to working with boards such as Arduino, Raspberry Pi, ESP32, STM32, and FPGAs. Additionally, I am proficient in designing and implementing communication protocols such as UART, I2C, CAN, USB, and SPI. With these skills, I can develop robust and high-performance embedded solutions for diverse applications in the fields of digital services and the Internet of Things."

I am a senior software engineer with strong experience across system-level and application-level development. I work with C#, C++, Python, and .NET, building high-performance backend systems and clean desktop or embedded firmware, mobile applications. I have solid experience with WPF for desktop apps, and also iOS and macOS development when product needs cross-platform support. Main Tech Skills: ⭐ Languages: C#, C++, Python, Swift, Objective-C, Bash, PowerShell ⭐ Frameworks & Platforms: .NET Core, ASP.NET, Entity Framework, Dapper, WPF, WinForms, Xamarin, MAUI, iOS, macOS ⭐ Systems & Low-Level: Linux, Linux Kernel, POSIX, Multithreading, Concurrency, Parallel Programming, Memory Management, Pointers, IPC, Signals, Socket Programming, Low-Level Debugging, System Calls ⭐ Backend & APIs: REST APIs, gRPC, WebSockets, Microservices Architecture, System Design, Distributed Systems, API Security, OAuth2, JWT, Rate Limiting ⭐ Databases & Caching: PostgreSQL, MySQL, MongoDB, SQLite, Redis, Indexing, Query Optimization ⭐ DevOps & Cloud: Docker, Kubernetes, CI/CD, GitHub Actions, Azure DevOps, AWS, Nginx, Linux Server Management ⭐ Tools & Engineering: Git, CMake, MSBuild, Makefile, Visual Studio, VS Code, CLion, Xcode ⭐ Testing & Quality: Unit Testing, Integration Testing, Test Automation, TDD, Debugging, Profiling, Static Analysis ⭐ Architecture & Patterns: Clean Architecture, SOLID Principles, Design Patterns, Domain-Driven Design, Event-Driven Architecture ⭐ Security: Secure Coding, Authentication Systems, Encryption Basics, Data Protection ⭐ Other: Performance Optimization, Reverse Engineering, Code Refactoring, System Optimization, Network Programming, Data Structures, Algorithms, Logging, Monitoring A big part of my work is close to the system. I have experience working with Linux environments, including kernel-level understanding, low-level debugging, and performance tuning. I am comfortable solving problems not only in code, but also in system behavior, concurrency, and integration between components. I don’t just write code. I focus on stability, performance, and long-term maintainability. I often work on fixing complex issues, optimizing slow systems, or rebuilding parts that were not designed well from the beginning. Outside of work, I value a calm and stable life. I spend time with my family, and this helps me stay focused and consistent in my work. I prefer long-term cooperation where both sides trust each other and build something meaningful step by step. I can work independently, read existing codebases quickly, and deliver clean solutions without overcomplicating things. I am also comfortable joining ongoing projects and improving them step by step. If you need someone who understands both high-level architecture and low-level details, I can help. Thanks.

Greetings! I'm a Software Developer with experience in Machine learning, Data Analysis and Web Scraping. Here are a few things I can bring to the table: - Experienced Software Engineer with a strong foundation in Python, Java, and C++. Proficient in developing robust desktop applications using PyQt and Qt, from initial design to performance optimization. - Web Scraping: Skilled in using Python libraries like BeautifulSoup, Selenium and Scrapy to efficiently gather data from websites and APIs, ensuring data is stored in structured formats for analysis and application use. Compliant with website terms and legal requirements. - Data Visualization: Experienced in using visualization libraries like Matplotlib to create interactive and visually appealing dashboards and reports. - Problem-Solving: Adept at quickly identifying and resolving technical issues. I can break down complex problems into manageable tasks and provide innovative solutions. If you're seeking a versatile Software Developer and Data Engineer who delivers high-quality results within deadlines, let's discuss your project requirements. Get in touch with me today, and let's build exceptional software and unlock valuable insights from your data!

- 100% job success - 5-star ⭐ rating on all jobs - Client satisfaction 😇 is my top priority I'm a Software Engineer with 3 years of experience in C++ and the Qt framework, specialising in developing high-performance applications and intuitive GUIs. - Proficient in C++ and Qt framework - Expertise in GUI design and implementation - Strong problem-solving and debugging skills - Focused on delivering quality and scalable solutions

Senior Software Engineer | AI Integration & LLM Systems | AI Video Pipelines | Full-Stack & Technical Consulting I build things most developers can't — from production AI agents and LLM pipelines to real-time video processing infrastructure, WebRTC systems, and full-stack web applications. With 22+ years of hands-on engineering experience, I operate across the full stack of abstraction: from x86/ARM assembler up to React/Next.js, and everything in between — including the cutting edge of applied AI. Where I add the most value: AI Integration & LLM Systems — My current primary focus, and one of the fastest-growing needs on the market. I design and build practical AI systems that go beyond API wrappers: autonomous code agents, voice recognition pipelines, LLM integrations using LlamaCpp and HuggingFace, Retrieval-Augmented Generation (RAG) architectures, and reinforcement learning feedback loops. If you have an existing product and need AI capabilities embedded into it properly — not bolted on — this is where I thrive. AI-Powered Video Pipelines — A rare combination: deep AI knowledge paired with deep video engineering expertise. I build the infrastructure behind AI video tools — real-time processing, generation pipelines, and streaming architectures using FFmpeg (API and CLI), Media Foundation, and custom SDKs. Whether you're building an AI video editor, a live AI-enhanced stream, or a 250–360° panoramic solution, I can own the full pipeline from capture to output. WebRTC & Real-Time AI — Real-time communication systems enhanced with AI capabilities: live transcription, translation, moderation, and analysis. Proficient in WebRTC end-to-end, with the AI layer built in from the ground up rather than patched in afterward. AI Chatbot & Agent Development — Building production-grade conversational agents and autonomous systems with custom backends, memory, tool use, and real integrations — not no-code wrappers or off-the-shelf demos. Technical Leadership & Team Consulting — Sometimes the most valuable thing a project needs isn't more code — it's the right direction. I help clients assess their engineering teams, audit existing codebases, and evaluate software stacks and architectures before committing to a costly build. Whether you're choosing between competing technology approaches, need an independent expert to validate a technical decision, or require a fractional technical lead — I can step in as a trusted advisor. I also form and coordinate small teams of specialists when a project scope requires it, matching the right engineers to the right problems. Low-Level & Systems Programming — Custom HTTP servers, Nginx modules, WebSocket implementations, eBPF, ICMP and raw IP protocols, OS kernel work, and hardware device drivers. This foundation is what allows me to optimize AI inference performance and video pipelines at a level most engineers simply can't reach. Cross-Platform Native Development — 12 years with OpenGL, plus Metal, Vulkan, and DirectX across macOS, iOS, Windows, and Linux. Experienced with Raspberry Pi and embedded/specialized devices. Web & Full-Stack — 15 years of JavaScript (React, Next.js, TypeScript, Node.js, Three.js, WebGL), 10 years of PHP (Laravel, CakePHP, MySQL), and Python/FastAPI for backend services. Additional languages & tools: C# / MSSQL, Java, Python, Qt/PyQt, Perl — all with 5+ years of production use. I'm equally comfortable building an AI agent from scratch, architecting a real-time video pipeline, advising a CTO on a critical technical decision, or assembling the right team to deliver a complex product. If your project sits at the intersection of AI and real engineering — not just prompting — let's talk.

Senior PDF & OCR Engineer with 12+ years of experience building PDF processing, OCR, Document AI, Document Intelligence, Desktop Apps, Reverse Engineering , automation and data extraction systems using C++, Python and .NET. I help clients solve difficult document-processing problems by developing reliable, cost-effective software for: ✔ PDF Processing & Conversion ✔ OCR & Document AI (Tesseract, PaddleOCR, Amazon Textract, Google Vision AI) ✔ Intelligent Data Extraction & Automation ✔ Computer Vision ✔ Desktop Applications ✔ High-volume Processing Systems Experience includes: • Developed PDF to Word / Excel / HTML / PPT / Image conversion systems using OpenXML SDK and PDF processing libraries • OCR workflows for scanned documents • AI-powered extraction from structured & unstructured documents • Layout-preserving document rendering & validation • Batch processing and automation systems • Performance optimization of legacy software Tech Stack: C++, C#, Python, .NET | PDFium, MuPDF, PDFium | OpenCV | OCR | Win32/MFC | SDK | WPF | SQL | AWS | Docker | Redis | Postgres Why clients work with me: ✔ 12+ Years Experience ✔ 100% Job Success & Top Rated on Upwork ✔ Strong debugging & R&D skills ✔ Focus on cost-effective, maintainable solutions using open-source technologies where suitable ✔ Reliable communication and long-term support If you need help with PDF processing, OCR, Document AI or custom software development, feel free to reach out.

Hello, Thank for visiting my profile. I'm a software engineer with 8 years of experience in developing Desktop Application. I have worked on many projects in this field and got success. I am good at C/C++, Win32, MFC, Qt, C# WPF, Winform, python, Java core and proficient in Visual Studio, Eclipse, Qt Creator. I deeply understand OOP design and GoF design patterns. I am familiar with both Window and Linux. I very happy to cooperate with you. Hai Nguyen.

I'm a software engineer with experience in migrating/optimizing legacy code and developing new systems of several kinds (batch processing, full stack web sites, components, web services, microservices). Worked with many different languages but I'm experienced in Python, C#, Oracle PLSQL, Javascript. I feel comfortable applying design patterns and architectural patterns. I am looking for new challenges. I can participate in projects with any language as backend, I'd like to participate in some projects in Python, Node.js, Rust or Golang.

I architect high-performance enterprise solutions that bridge the gap between robust software engineering and advanced intelligence, recently demonstrated by reducing deployment times by 40% through automated CI/CD pipelines. As a strategic partner, I do not simply write code; I deliver Data Analysis and scalable software ecosystems that drive ROI. My approach combines the stability of C# .NET and Microsoft SQL Server with the predictive power of Python Machine Learning and Artificial Intelligence, ensuring your infrastructure is secure, scalable, and primed for data-driven growth. • Scaled cloud infrastructure on Microsoft Azure and AWS to handle 1M+ requests/day using Kubernetes. • Engineered a high-frequency trading module using C++ that improved data processing speed by 30%. • Designed interactive Dashboard reporting using Microsoft Power BI and Looker Studio to visualize complex datasets. • Developed a cross-platform Smartphone application integrated with a custom AI Chatbot for 24/7 customer support. • Delivered over $100k in value on Upwork with a 100% Job Success score across 2,500+ hours. • Architected a Natural Language Processing (NLP) and AI Agent Development workflow to automate Data Extraction from unstructured text. • Built a Deep Learning model for predictive Data Science analytics, resulting in a 15% increase in user retention. • Implemented a robust ETL Pipeline to migrate legacy data from Microsoft Excel to secure SQL databases. My technical toolkit is comprehensive, spanning Full Stack Development with ASP .NET Core, Angular, and React, to specialized Data Engineering. I possess expert-level proficiency in SQL, Data Scraping, and Data Annotation workflows. Whether you need a Web Application, API Integration, or a complex AI Development project involving Deep Learning, I ensure seamless execution. I am equally comfortable managing Front-End Development with HTML5, jQuery, and TypeScript as I am handling Back-End Development and Data Visualization. Let's schedule a consultation to discuss how we can elevate your technical infrastructure and Data Analytics strategy.

⭐ Top Rated Plus | 100% Job Success Hey! I'm Dubravko, a Solutions Architect with 7+ years of experience and the founder of Altitude IT, a co-located team of engineers in Serbia. We're not a faceless outsource shop. I'm hands-on in every project, managing my team and staying close to the work so nothing slips through the cracks. We also work alongside a partner design agency in our office, so we can cover the full product lifecycle from UI to infrastructure. We build systems that need to stay up when traffic spikes and complexity grows. A few examples of what that looks like in practice: -Built an API-driven platform that integrates with 20+ major airlines, automating rebookings, refunds and passenger data updates, used both as a standalone booking app and as a unified API that other businesses plug into their own systems. -Developed a real-time sports data aggregation platform handling live scores, schedules and news across soccer, basketball, baseball, NFL and Formula 1, restructured the data layer and optimized MongoDB to keep things fast under heavy load. -Created a FinTech commission management system that automated payment calculations, receipt matching, invoice generation and role-based access, cutting manual processing time and errors significantly for the client. -Shipped cross-platform mobile apps in e-commerce and education (React Native + Golang), including a grocery app with barcode scanning and payments, and a student discount app with QR codes and interactive maps. -Deployed Prometheus + Grafana monitoring on AWS EKS with Kubernetes and Helm for proactive infrastructure observability. Our stack: Backend: Golang, .NET, Node.js, Python | Frontend: React, Next.js, Angular, React Native | Infrastructure: AWS, DigitalOcean, Kubernetes | Databases: PostgreSQL, MongoDB, Redis, MySQL | Tooling: Prometheus, Grafana, Power BI How we work: We take on and prefer long-term engagements, multi-year relationships, not one-off handoffs. Communication is direct, clear and on time. I plan and architect every project before a line of code is written, and we iterate closely with clients throughout. If something breaks at 2am, we're the ones fixing it. Ready to talk? Send me a message and let's figure out if we're a good fit.