Senior Software Engineer/Full-Stack Developer position, offering a 25+ year of experience in all variety of programming languages, first of all C++, various languages/tools, and environments. Have DevOps skills. Passionate about best coding practices - computer vision, Web, IoT (Internet of Things), UI (User Interface) and AI (Artificial Intelligence and Neural Networks).

   25+ years of experience in C/C++ and many other languages, for number of platforms, including, but not limited to: GCC/Clang/GDB, STL, ANSI C, MFC, ATL, strong OOP skills, CUDA/OpenCL, Graphical User Interface skills, wide range of appliances, integrated with each-other, from developing huge BIG-DATA multi-server application networks (analysis/identification/recognition/linking/categorization of huge-huge amounts of information), to tiny IoT devices on Arduino/ESP32/ESP8266 controllers and modules, Palm OS (both, applications development and synchronization with desktop, the technology is bit obsolete, but we where the first on the market, that's experience of doing tiny, efficient mobile apps on limited resources), Internet protocols, localization of applications, web-development (PHP/ASP.NET/C#/Node.js/JavaScript/HTML/REST/JSON), administration of Linux-based servers (web-sites, email, VPN, etc).

   Platforms: Linux (POSTFIX, coding in C/C++, Bash, Python, PHP, Node.js, JavsScript, Perl, administration for servers/hosts and web-sites, security of sites/hosts, load-balancing, automated administration of virtual cloud servers), Windows (C++, GUI, ASP.NET, C#), Windows Mobile (C++ coding for Smartphone editions), Android, Palm OS (developing mobile apps since 1998), DOS, RTOS, Embedded systems (Raspberry PI), smart IoT controllers/devices (on ESP32/ESP8266/Arduino).

   Programming languages and instruments. 25 years of continuous daily C/C++ developement (GCC, Clang, MS Visual C++, MS Visual Studio Code, QT Creator, Eclipse, Metrowerks CodeWarrior C++, Arduino Studio C++). Long-lasting experience in various programming langauges: PHP, Bash, Python, Perl, Java, ASP C#, Node.js, JavaScript (standalong and withn HTML), HTML/JS/CSS, help file editors (HTML workshop, Homesite). Installers creation (Nullsoft Install System, Install Shield, Wise), sound editors (Adobe Audition, FL Studio). Graphics Design (ex: Adobe Photoshop, Illustrator, GIMP, Corel Draw & Photopaint), video editors (CapCut, Pinnacle). Work with version control systems, code reviewing in GIT/GitLab/SVN/VSS and Source OffSite. DB Developement for MySQL/NoSQL/Microsoft SQL/local SQLite - DB design, query optimization, performance tuning/monitoring/troubleshooting

   Other experience: Self-organized, team player, bias for action, deliver results, remote work/hybrid experience (since 1998) in different time zones, coordinating work of various departments (QA, tech support service, sales, marketing) using Agile/Scrum/Kanban/CI/CD methods, experienced in writing highly optimized (and well readable), stable code, blockchain technology (ex: blockchain algos, real-time trading, sales in direct wallet-to-wallet payments). Self-organized, able to work under stress and heavy conditions when infrastructure is damaged - have experience of work during a war, working during almost daily air rides alert (when russia bombed our cities for all 2022-2023, destroyed big part of Ukrainian critical infrastructure) managed to organize work in condition of continuous blackouts and absence of landline Internet by building off-grid solar power station with big reserve of power, and able to switch to mobile Internet sources automatically when main fiber line is down. Localization of Software/sites to multiple languages, creation of installers and smart download stubs

   Speaking Languages: English (quite fluent), Ukrainian (native), Russian (almost native), German (limited, lived in Germany for 6 months), Polish (limited), French (limited, lived in France for 3 years)

   - Distributed computing for Big-Data coordinated dynamically allocated network of Kubernetes + web-based control panel to configure/monitor such system. Scaleable VPS cloud Kubernetes (nodes/containers) allocation to adjust to demand automatically.
   - Multi-threading, inter-process communications. In Linux, Windows, and IoT devices. Have experience in OpenMP parallel code execution, and, OpenCL and CUDA parallel computing on GPUs.
   - Strong debugging skills, memory leaks detection techinques, using real-time execution logging. Have experience on debugging on IoT devices with very limited set of features (no screen, no disk, no Internet, etc.).
   - Computer vision: OpenCV, objects detection/identification/tracking. Deep Neural Networks (DNN), have experience with launching various neural network models linked to OpenCV/DDN to be runned on hardware with limited resources, also, on systems with powerful video accelerators (CUDA-based neural networks), implementation of Python and C++.
   - Custom C++ memory management experience (automatic leaks detection, garbage collection, faster operations on small memory blocks, caching, sharing, statistics on memory usage, etc).
   - Advanced Printing support - created ultimate printing support C++ libruary, starting from custom print dialog, and up to VISYWING print preview (it has very fast metafile-based graphical engine).
   - Experience of work with localized strings in UTF-8/UTF-16, multi-byte and unicode formats, can deal with Asian and right-to-left languages (Hebrew, Arabic), know possible issues that may arise there.
   - Knowledge of Compression algorithms. Developed custom implementation of LZW and Hoffman encodings for mobile/embedded systems, this algorithm requires nearly no memory (maximum 5Kb) for packing/unpacking while all standard implementations have huge memory footprint.
   - Created ergonomic UI libruary and have experience in coding full set of _custom_ user interface objects for Windows, in other words, visual and audio themes. My best/most complex task achieved was fully-featured rich-text editor with tables support.
   - Created graphical library (Windows GDI-based) which supports fast double-buffering, secure management on all kinds of pen/brush/font objects (which is typically the source of bugs in Windows programs, in this library work with such objects is absolutely safe), also it includes set of very fast classes for direct work with bitmaps (quick pixels access, color adjustment, filtering, etc).
   - Code style - doing my best to be perfect in it, always keeping it clear (fine naming is always the case), well structured, commented, secure, easy to read.
   - Web-sites development. Full product life-cycle, payment processing, marketing, newsletters, API, AI LLM chatbots, etc. Using PHP, ASP.NET, C#, Node.js, JavaScript, Perl, Python languages, CSS, JSON, XML, creation of slim and highly optimized for the web graphics in Photoshop and Illustrator. Have experience with coding from Angular frontend. Can do even a whole web-server in C++, such server is blazing fast, require low resources, highly resistive to DDOS attacks.

   - Linux/Debian experience - administration and programming/scripting. Hosting Nginx/Apache web servers. Exim mail server administration, MySQL database administration, building private VPN networks (WireGuard, OpenVPN), firewall (IPtables), fail2ban intrusion-prevention system. Can create bash scripts/images for DevOps to quickly deploy systems with needed configurations. Debian, Ubuntu, OpenWRT, Raspbian.
   - Internet of Things experience (IoT) experience, including Raspberi PI, number of ESP32/ESP8266/STM/ARM controllers with various modules are coordinated via Raspberi PI Linux/Debian/Raspbian system. Knowledge in GPIO PWM and ADC/DAC signnal generation and processing, I2C, SPI, ICU, UART, custom PWM-based, GPT and CAN protocols, mesh networks, LoRa communication.
   - Embedded OS, know how to write small and fast code on very limited resources. Have experience with RtOS, including asynchronous multi-threading support, autonomous sytems.
   - Have 4 years of experience with Delphi/Pascal and linked to it Borland/Embarcadero C++ Builder implementation.
   - Blockchain/Cryptocurrency. Deep knowledge of blockchain techniques, consensus algorithms. Implemented automated Bitcoin store checkout page for immediate direct purchases. Implemented real-time trading tool whcih can make instant AI decisions and trade automatically on Poloniex and Bittrex platform's API.
   - I leverage AI-powered productivity tools in my coding practice to enhance my efficiency and creativity. Some of the tools I use are Tab9, ChatGPT, and Bard, among others. I always adhere to the company's policies and guidelines regarding the use of such tools.

🧑‍💼 Senior Software Engineer (C++ and Neural Networks for computer vision)

🏢 Ragnarok Group / Spiral Networks.

📅 July 2024 – current

   - Developed web camera driver and a service which can split web-cam stream to multiple consumers by emulation additional virtual web-cam devices broadcasting same stream from single hardware device.
   - Used neural-networks based computer vision to identify people and objects in a room, detect threatful situation that may impose privacy, safety, and other risks of various kind in observed area with minimal use of hardware resources.
   - Implemented secure HTTP-based communication and protocol (similar to TLS/SSL), and a secure encrypted data storage to assure best data safety standards involving AES algorithm, public/private keys, security tokens, and other related techniques.

   🔧 Tools: Visual C++, Python, OpenCV/DNN neural networks, OpenSSL. OS: Windows client + Debian Linux server for API and backend

🧑‍💼 Senior Software Engineer (AI and LLM focus)

🏢 1x1 IT services.

📅 Feb 2024 – May 2024

   - Developed an advanced system for generating detailed product descriptions using Large Language Models (LLMs), automating the creation of high-quality descriptions from product titles and models for a database of 100,000+ products.
   - Leveraged AWS Bedrock Cloud APIs alongside local GPT4All LLMs to balance performance, text quality, and cost-effectiveness, achieving optimal results with AWS’s Claude Sonnet 3 LLM while incorporating local GPT4All LLMs to manage expenses.
   - Employed Python as the primary programming language for integrating cloud and local LLM capabilities, implemented dynamically scaled network of crawlers/parsers.

   🔧 Tools: AWS Bedrock cloud API + GPT4All local LLMs, Python

🧑‍💼 Senior Software Engineer (C++, Linux, Big Data, AI)

🏢 Shopit AB, a Big-Data Company

📅 July 2022 - December 2023 (17 months)

   - Involved in to development of analysis of huge amount of textual information. Analysis, context recognition, categorization of text information written in big amount of languages.
   - Development of Linux-based AI/Big-Data application, able to act as a network, handle enormously huge amount of crawled and fetched from different sources textual information. Mainly concentrating on text context analysis, implementing recognition of human-readable text, conversion it to structured, tokenized (language-independent) structure, context linking of logical text structures. The code is able, for example, find and identify same products from product description written in different languages and in different manner. There is thousands of potential usages of this kind of technology. It's kind of artificial intelligence system which can be very intelligent and do non-exact text search, by finding textual information with matched context in huge amounts of data.
   - Code reviewing to control changes done by other team members.

   🔧 Tools: GCC/CLang C/C++, QT Creator, SQL, GIT/GitLab, Atlassian Confluence, JIRA, Debian OS.

🧑‍💼 Senior Software Engineer (C++, PHP, Windows, Linux, Web, IoT)

🏢 Vladonai Software – Productivity Software

📅 June 2009 - July 2022 (13 years)

   - Drove full life-cycle of software title AllMyNotes Organizer is the implementation of my vision how end-user software should look and work. Smart, efficient, easy in use. The program is full of interesting technical solutions. Localized to 20+ languages. Has totally custom, skinned UI, including very advanced rich text editor, with tables editing UI/logic functionality. Sound themes (beta version). A self-healing database engine, which is able to restore data even after very heavy damage of file logical structure (we have nearly zero cases of data corruption). Though it stores data locally, the program has strong back-end on our server, which, among other tasks, controls software activations and we have zero piracy.
   - The web-site www.vladonai.com (also allmynotes.org and allmynotes.info) are hosted on Debian Linux server. Server administration duties, based on Nginx/Apache web server, Exim email server, Exim, MySQL, WireGuard VPN, IPtables firewall, fail2ban intrusion-prevention system. Implemented online manual reader, RSS feed for list of updates and press-releases.
   - Created web-based control panel for the web-site, which displays very advanced analytics on program usage, site visitors, monitor web-site visitors in real-time (can see humans and bots), allows easily list all sales, edit user records, send email newsletters, submit PAD files to software catalogs automatically (a crawler bot for defined list of sites), monitor server resources and checks for major errors in real-time, monitor major site pages for errors, allows us quick generation of activation codes and vouchers, automatically schedule discounts/promos for various geolocations. Written in PHP.
   - Created an automated real-time trading software on crypto-currency exchanges (Bittrex and Poloniex) for proprietary client.
   - Development of Smart Home system based on mesh network of IoT micro-controllers to automate efficient house energy flow distribution from Solar Station + Grid to smart consumption, usage of Electric car not only for changing but also for storage in V2H (Vehicle to House) mode.

   🔧 Tools: Visual Studio C++, GCC, PHP/Python/Pearl/Node.js/JavaScript, SQL, GIT/GitLab, Apache, Nginix, ESP32, Mantis Bug Tracking, Windows, Debian OS, RTOS, Embedded Linux.

🧑‍💼 Software Developer (C++, Mobile, Windows)

🏢 Iambic Inc. - Mobile Software - Sunnyvale, CA

📅 March 2001 - May 2009 (8+ years)

   - Worked on TinySheet project, an Excel-like application for PalmOS. Created charting support, made it Excel-compatible by enabling seamless synchonization with Excel files, we where the only company among the competition able to 'natively' synchronize charts between Excel and Palm, created UI libruary to support new high-resolution enabled devices (which was eneasy at that time, literaly we had to do 'drivers' for verery possible device on a market).
   - Developed so named 'Intellectual Text Processor' - a text parser library/API which is able to automatically recognize and identify information of various type out of plain text. Example: address line, country, city, zip, first name, last name, company name, job title, phones, e-mails, urls, IM's, e.g. In was batch text recognition in business cards, email signatures, and other non-regularly formatted texts. Ported it to multiple platforms.
   - Raised to position of leading developer of the company, worked on all products, including Agendus for Palm (for Palm, and Synchronization Conduit), TripTracker (version 4 for Windows and WM), Vehicle Manager (for Win and WM), Health and Diet (for Win and WM), Iambic Mail (for Palm, and Synchronization Conduit for Palm), TinySheet synchronization conduit, FastWriter (for Palm and synchronization conduit), Iambic Reader (for Palm and synchronization conduit), Time Reporter (for Palm and synchronization conduit), Sales Warrior (for Palm). All these projects were supported mostly by me when was need to add new feature or fix some bug, lead support for other team members, did code reviews, also I was dealing directly with QA and support staff in order to solve problems related to these products.
   - I was engaged in to development of TinySheet (our Excel-like application for PalmOS), FastWriter (our Word-like application for PalmOS), and Iambic Mail application in to a single 'Iambic Office' package from PC side, I've done common synchronization manager application and improved conduits (synchronization modules) for all these applications to work as a single packages seamlessly
   - Implemented plugins for Outlook, Excel and Word for quick access to Synchronization with Mobile functions. It's done using Visual Basic and C++ API of Outlook
   Note: for first 3 years I was working in French branch office of Iambic Inc, and after that office was closed moved to country of my origin, Ukraine, and continued working for Iambic, Inc. as independent contractor, remotely, visiting Iambic Inc headquarter office in California approximately once a year. I was a leading developer for most of the software titles developed by Iambic, Inc - I was working for Iambic, Inc. for 7+ years, which is an absolute record for this company. Worked there up until the last day of the company, when it was sold to our competitors... The company was successful and profitable for the period when I was working there, I was loyal to it until the end.

   🔧 Tools: Code Warrior C++, Visual C++, Visual Basic, MFC, Palm OS API, and Win32 API.

🧑‍💼 Software Developer (C++, Mobile)

🏢 Yellow Computing – Mobile Software

📅 May 2000 - March 2001 (10 months)

   - Created dictionary application mobile software title Pro'Lingua for Palm Computing Platform version 2 (created it from ground up, not based on v1), it allowed quick translation of words between various language pairs. The biggest technical challenge in this project is the development of a new compression algorithm to compress dictionaries on mobile device. It has high compression ratio and low memory footpint. Also this project is completely object-oriented (even message handling and all UI object wrappers), which is very rare case for Palm platform.

   🔧 Tools : Code Warrior C++, GCC, Delphi/Pascal, Palm OS API, and Win32 API.

🧑‍💼 Software Developer (C++, Mobile, Windows)

🏢 MicroLogic Software Corp (USA, remote) - Hackensack, NJ

📅 December 1998 - September 2000 (2 years)

   - Developement of CAD program 'Machine Shop' (www.emachineshop.com). This CAD application is used to draw technical drawings and send it via the Internet to MicroLogic for manufacturing. Developed big part of user interface, developement of API for communication between client/server to place orders with CAD drawings, server-side orders storage, develment of secure/encrypted communication channel using the PGP algorithm, export of data to .DXF format (AutoCAD format), printer output of technical drawings.
   - Developed a multi-platform algorithm to synchronize hierarchical trees (N-way synchronization) - PC to Mobile and Mobile to CP, also between multiple PCs within LAN network. Which was used in number of product of the company.

   🔧 Tools: Code Warrior C++, GCC, Visual C++, Borland C++, MFC, Palm OS API, and Win32 API.

🧑‍💼 Various/Freelance Application Developer

🏢 Self

📅 July 1997 - December 1998 (18 months) and occassionaly in 200x when had no job

   - Epoch Clock application to extend Windows Clock in the system tray, added calendar/reminders capability to it.
   - BeCrossword PalmPilot and WindowsMobile game to resolve puzzles on the go.
   - Simple CAD application to draw geographical maps. Allows drawing and viewing of maps, add/edit/remove map elements (houses, roads, parks, pipes, etc.), filter specified elements, search, scaling and some more. This project was done for Ternopil state water supply company to keep information about their objects on the map.
   - Phone Book with list of all phone numbers in Ternopil city. This application has nice looking user interface (my first attempt to create something not ordinal, and quite successful), can add, delete and modify data in database, has powerful search (search in any field, also possible to use wildcards), sorting data by different fields, has very secure data storing format (in case of partial database damage in most of cases can be restored).
   - Warehouse accounting automation. Used to automate all warehouse accounting and other operations in private firm 'Konist' (which is probably #1 regional company which is selling electrical equipment such as pumps, engines, etc.), application includes relational database support for different needs, search, filtering, statistics, printing and some more.
   - Drugstore accounting automation. Used to automate most of drugstore accounting operations in Ternopil drugstore #160, includes relative databases, search, filtering, statistics, printing and some more.
   - Fractal explorer app. Allow to explore fractals, users can set fractal parameters, scale, see statistics and more.
   - Developed local companies catalogue CD by order of Infotechcentre company in 1998.
   - Developed first online shop web-site for Infotechcentre company in 1998. That site was fully developed, it was a supported CMS system long before commercial CMS systems appeared on a market, it was up for 15 years until company was in business.
   - Created the first official website for Ternopil State Technical University, which remained the university's online presence for 5 years.

   🔧 GCC, Visual C++, MFC, Win32 API, HTML/JavaScript, Delphi/Pascal.

🏢 Ternopil State Technical University

📅 1997-2002 (5 years)

   Degree: Specialist of Computers Sciences (equivalent of Master degree, 5 years university study). Learning Data Structures and Algorithms, Mechatronics/Robotics, Automation Engineering, Math Analysis. Also, I've started working on a second year of university, studied to apply learned skills on practice.

🧑‍💼 Self-study

📅 1991 - 1997

   I've been studying programming from 11 years. I totally love programming, and spend a lot of time on it. I practically live in Internet. I have deep understanding how to code programs right. All my sources are written in great style, source style such as naming, security, clarity are very important for me. My first computer was Sinclair's ZX-Spectrum which I've done nearly my own hands, many parts where soldered manually, and thanks to it I have good understanding on computer hardware part, this background knowledge allows me to understand software crystally clear, but as a entire process as I perfectly know structure of processor, computer parts and how they are interacting with CPU and each other on a very low level (I perfectly know how RAM is addressed on the address bus, and readed using the data bus, know the difference between memory and IO addressing, my first programs where saved on a magne tic tape and displayed on a old-fashion CRT TV).

   I'm an old school computer/C++ geek :-) most of my time spending in front of my PC, administrating Linux server and linked to it services, playing with/developing IoT system in my house, always improving my development skills, searching for new exciting approaches on solving problems more efficiently and faster. Love art, music, spiritual growth, sometimes traveling, and once again, computers :) Even when i don't work I find myself thinking on an issue I'm working on...

   I've developed on my own, a complete code library which makes GUI development (it has complete skins support, WinAmp-like but much stronger), easy in localization (even users may localize program in their own language and share language modules without need to recompile anything, it can be done with simple Notepad by very end user), security and development speed totally superior in comparison to traditional ways of development. Among all software development I'm putting most of my attention on the user interface part, as eye-catching factor is extremely important for product success. And this library is a result of my best experience. You can see the AllMyNotes Organizer product.

   Maintaining a healthy and substance/alcohol-free lifestyle, emphasizing focus, productivity, and a commitment to well-being.

    View online on GitHub or download this archive: ⬇️ "Volodymyr Frytskyy - code sample.zip" ⬇️