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Software engineer with 10+ years of experience and a 100% Job Success Score on Upwork. I build games, full-stack web applications, and AI-powered solutions — and I’m always honest about what I can deliver. I’m David Galstyan, from Armenia. Programming has been my passion since my early teens, and I’ve worked professionally as a software engineer since 2015. I believe people should do what they’re good at — and this is mine. What I can help you with: • C/C++ & STL — high-performance, clean, well-structured code • C# & Python — application development, automation, and backend logic • Game development — Unity and Unreal Engine • Full-stack web — building complete, responsive web applications front to back • AI engineering & computer vision — object detection, image recognition, and AI-powered features Strengths: • Strong foundation in OOP, data structures, and algorithms (including their complexities) • Detail-oriented team player who works well with cross-functional teams • Fluent English, both conversational and technical • Strong desire to learn new technologies, with solid analysis and problem-solving skills Send me a message and let’s talk about your project.

A skilled software developer, on various platforms ranging from Windows to Linux to ARM and other embedded devices (AVR, PIC, etc). My preferred programming languages include, but are not limited to: - C/C++ - Java - Python - Rust - C# - Matlab I'm familiar with various open source libraries in different programming languages such as STL, Curl, Json, GTK, Swing, BeautifulSoup, Requests, Selenium, Tkinter, and many more... I've experience in Embedded Software using various microcontrollers (AVR, PIC, STM32, TM4C123, etc...). I've used many peripherals such as (GPIO, Timer, PWM, NVIC, RCC, FPEC, UART, SPI, I2C, CAN, ADC,...), interfaced it with many sensors and actuators. I've built many projects ranging from simple projects (blinking LEDs, motor control, calculator, stop watch, ...) to more advanced projects (Bootloader, Smart Home, Digital Clock, ...). I have a strong background about Algorithms and Data Structures such as: - Dynamic Programming - Backtracking - Graphs - DFS - BFS - MST - Heap - Trie - Balanced BSTs - Segment Trees - Disjoint Set - and many more... I've solved +370 DSA problems on HackerRank platform and got ranked 660 over 23 million developers in solving coding challenges. You can find my profile in the portfolio. My primary focus in writing software is performance, without sacrificing the safety and security of the application. I will do my best to discuss all the relevant details and the scope of the project with the client, so that I can form an idea of the finished product in order to be able to lay a better groundwork design for the project.

Most trading ideas never become systems. Most automation ideas never get built. I close that gap - fast, clean, and production-ready. I'm a Python developer and AI automation engineer at Viprasol Tech, specializing in AI-powered trading systems and intelligent business automation. With 24+ completed projects, a 94% Job Success Score, and Top Rated status on Upwork, I build systems that work in the real world - not just in demos. --- AI AGENTS and INTELLIGENT AUTOMATION --- I build autonomous AI agents and automation pipelines that eliminate manual work and run 24/7: - AI Agents using LangChain, LangGraph, CrewAI, and OpenAI/Claude APIs - RAG pipelines for document Q&A and knowledge bases - LLM integrations - embed GPT-4, Claude, or Gemini into any product or workflow - n8n and Make automation workflows connecting CRMs, APIs, and databases - AI-powered market scanners, data extractors, and research agents --- ALGO TRADING and FINTECH AUTOMATION --- - Pine Script strategies and indicators for TradingView (most delivered in 24 hrs) - MT4/MT5 Expert Advisors (MQL4/MQL5) - custom EAs, backtesting, optimization - Fully automated trading bots: stocks, crypto, forex, options - Broker API integrations: Alpaca, IBKR, Schwab, TastyTrade, Coinbase, Kraken, Tradovate, TradeStation, Tradier - TradingView to broker execution via webhooks - Live dashboards for bot performance (Flask, Plotly Dash, Streamlit on GCP/Heroku) - Copy-trading systems, order routing, risk management automation --- TECH STACK --- AI/LLM: OpenAI API, Claude API, LangChain, LangGraph, CrewAI, RAG, Pinecone, ChromaDB Automation: n8n, Make, Webhooks, REST APIs Trading: Pine Script, MQL4, MQL5, EasyLanguage, Python (pandas, numpy, ccxt) Web: Flask, Plotly Dash, Streamlit, FastAPI, HTML/CSS, Bootstrap Cloud: GCP, Heroku, Docker Data: SQLite, PostgreSQL, Google Sheets, Excel/VBA Alerts: Telegram, Discord, Slack, SMS, Email Top Rated - 94% JSS - 24+ projects - 0 to 4 hr response - CTO of Viprasol Tech Message me - describe your idea and I will tell you exactly how to build it.

- CTO at Singularis Programming - Extensive experience in Computer Vision and Machine Learning projects. - Keen on cutting-edge technologies and helping businesses achieve their objectives. 🏅About company - 13+ years of continuous experience in programming - Our engineers got significant achievements and results in the Programming World Cup ACM ICPC - 200+ successfully completed projects 🤝 Trusted by Intel, NEC, Samsung, DHL, VIATechnik, Amberg Technologies - Working with partners around the world, in all time zones: in Europe, North America, MENA, the Asia-Pacific region. - Completed projects in the UK, Switzerland, the USA, Spain, Germany, Belgium and other of EU. 💡 OUR SERVICES include, but are not limited to: – Definition and Planning, Business Analysis, Project Planning – Back-end development + DevOps Application Architecture, REST API, Application development, CI/CD, .NET Stack, C#, Entity Framework, NHibernate, Microservices – Front-end development Mark-upping, Client-side development, Responsiveness, React, Typescript, JavaScript, Redux, MobX – AI / Machine Learning / LLM Deep Learning and convolutional networks, GAN, TensorFlow, Keras, Torch, Stable Diffusion, Transformer architectures, fine-tuning and optimization, Hugging Face, LangChain, RAG, prompt engineering, Unsloth, llama.cpp, vLLM, model quantization and deployment – Computer Vision OpenCV, C++/Python, MMCV, YOLO, dlib, developing applications for Kinect and Intel RealSense, Microsoft HoloLens, video processing with FFmpeg – Mobile development iOS, Android, Cross-platform – Testing/Quality Assurance Manual (TestLink), Unit Tests, Automation, Stress, checklists, test-cases, Cypress – Technical Support and Maintenance DB Back-ups, Cloud/Data migration, Bug Fixing, 24/7 support 💼 Main principles - Maximal quality of the provided services and the developed software. - Focus on permanent improvement of our team. - Stay tuned at the front edge of modern computer technologies - Apply the most advanced approaches to software development. 👋🏼 I’m open to collaborate. Feel free to get in touch with me and my team to discuss any project implementation — we’ll be happy to share valuable ideas and suggestions!

Build your iOS & Android MVP without hiring a separate Backend developer. Unlike developers who rely on external teams, I architect the full ecosystem: pixel-perfect Flutter UI backed by scalable Node.js APIs. With over 4 years in Software Engineering, I don’t just build apps; I build integrated systems that are ready for production. MOBILE WORKFLOW: - Cross-Platform Architecture: Single codebase for iOS & Android using Flutter/Dart. - Seamless Backend Integration: Whether you need me to build the API from scratch or seamlessly integrate with your existing backend team, I ensure the mobile app talks to the server perfectly. - AI-Native Interfaces: I build intuitive chat interfaces for LLMs (OpenAI/Gemini) and integrate AI-driven features, making your mobile app smarter. - Complex Features: Integration of Maps, Real-time Chat (SocketIO/Agora), and Payment Gateways (Stripe/RevenueCat). - Store Approval Guarantee: I handle the entire submission process and guarantee approval on App Store & Play Store. - Admin Panels: I also build the React/Next.js web dashboard you need to manage your mobile app users. INDUSTRIES SERVED: E-Commerce, Real Estate, SaaS, Startup MVPs, Booking Systems & Healthcare. TECHNICAL STACK: • Mobile: Flutter, Dart, Bloc/Riverpod, Fastlane CI/CD. • Integrations: Google Maps, Agora (Video), Bluetooth, Camera. • Local Data: Hive, SQLite for offline-first capability. Last update Jan 2025

💎 Top Rated Plus | 🚀 100% Job Success Score 💪 12+ Years of Experience| 🎯 550+ Successful Projects | 💼 Upwork Skill Certified "My deliverable is not the product/service but your satisfaction with it" Bringing cutting-edge AI and algorithmic trading strategies to life, I am your go-to expert for innovative tech solutions. From GPT-4 and ChatGPT applications to advanced quantitative analysis including Algorithmic Trading and Data Science, reach out to me for unparalleled project advice. With a knack for developing sophisticated algorithms and creating fully automated apps, I specialize in transforming complex problems into elegant, efficient system. My expertise includes: - Creation of robust Algorithmic Trading Systems with seamless broker (Interactive Brokers, Zerodha, MT5, Alpaca and any other) integration - Mastery in AI chatbot development with GPT-4, ChatGPT, and other large language models - Comprehensive model development for Machine Learning and Deep Learning - Streamlined order execution via Telegram and advanced QuantConnect algorithms - In-depth experience with financial modeling and quantitative derivatives valuation