Hire the Best TCP/IP Specialists in Lviv, UA

Hi, my name is Arsen. I’m a Senior C++ and Python developer with 5+ years of experience building software for Linux, Windows, and embedded systems. I focus on clean, efficient, and reliable solutions for low level, backend, and performance critical tasks. What I bring to projects: • C/C++ development: STL, Boost, Boost ASIO, Qt, WinAPI, OCCI, V8, POSIX, multithreading • Python development: automation tools, data pipelines, backend logic, Django • Database engineering: Oracle, SQLite, MongoDB, data export tools, batch processing, custom type conversion • Linux systems programming: networking utilities, driver level interaction, Linux kernel headers, OpenWRT, desktop and CLI tools • Wireless and low level networking: Generic Netlink, nl80211, libnl/libmnl, Wi Fi scanning tools, protocol and frame parsing • Reliability and performance: profiling, transactional workflows, data integrity focused design, Dockerized builds, CI/CD with TeamCity • Cross platform delivery: Linux and Windows applications, Make, CMake, Conan, Git/SVN, GDB, Valgrind, Doxygen, Bash I have built tools ranging from high performance Wi Fi scanners in C that interact directly with the Linux wireless stack, to cross platform C++ command line utilities that export Oracle data into SQLite with transactional safety and performance profiling. I am comfortable working close to the system, optimizing throughput, handling large datasets, and designing software that is maintainable and stable in production. Clients usually trust me with complex backend, systems, and infrastructure related tasks where performance, correctness, and long term reliability matter. If you are looking for a developer who can work on C++, Python, Linux internals, networking, or data heavy applications, let’s talk. 🙂

I'm experienced UNIX systems administrator and software developer. Have deep knowledge in GNU/Linux and BSD operating systems. Gentoo Linux power user and contributor, package maintainer. Author of Linux kernel patch for Terminus terminal font support. Started from 2004 worked in many software companies as C and C++ developer. Participated in various commercial projects for Windows and GNU/Linux distributions. Have understanding of such programming paradigms like OOP, C++ templates, functional, imperative programming, scripting. • Developing software in C, C++ according to customer needs • Writing shell scripts in Bash to perform administrative routines • Configuring Linux netfilter firewalls using iptables, IP routing • Deploying and configuring Apache HTTP Server, Postfix MTA, VPNs, SSH • Deploying business apps on various VPS providers like Hetzner, AWS • Resolving Linux issues like kernel panics, boot failures etc. • Maintaining legacy setups and environments, writing documentation • Consulting customers how to implement their business requirements • Consulting customers how to keep Linux environment secure and up to date

Full-cycle iOS and Android Application development agency from Zaporizhzhya, Ukraine. Website-portfolio: [please ask for the link] Full-cycle means that we provide services at every stage of iOS and Android application development process. We grow our business by helping our customers to grow theirs. We build iOS apps (iPhone, iPad) and Android apps (phone and tablet) of any complexity or style (material style, flat style): - delivery and ordering systems related applications - logistics mobile applications - marketplace apps - video and chat applications, WebRTC / VoIP, socket connection - booking mobile apps - online TV applications - educational applications - applications for online stores - cleaning services - in-app purchases and in-app subscriptions related apps - iOS apps with iOS specific features - Android material apps with Android specific features - AndroidTV applications - you tell it - we do it iOS skills include but not limited to: - Swift 3 / Objective-C - iOS SDK, xCodeb - Protocols: JSON-RPC, XML, RPC, SOAP, REST. - Integration with existing social networks: Facebook, Twitter, Vkontakte, G+ - 2D games: Cocos2D, Cocos2Dx - E-books (static or interactive), Newsstand - Databases: SQLite, CoreData - BLE 4.0 - Mobile advertisement: iAd, AdMob, AppLeads, Flurry, AdWhirl - Other servises and SDKs: Braintree, Liqpay, Yandex.Money, Branch, Maps (OSM, Google, Apple), LinPhone, FrozenMountain, ooVoo, Flurry Analytic, Google Analytics, Crashlytics, Test Flight, other Android: - Java / Kotlin - Encryption: OpenGPG. - Protocols: JSON-RPC, XML-RPC, SOAP, TCP/IP. - simple applications OpenGL ES - Integration with social networks (Facebook, Twitter, Vkontakte, MailRu, Odnoklassniki), Google services (e.g. Youtube, Google Cloud Printing), Payment gateways (Braintree, PayPal, Liqpay, Yandex.Money) - Interaction with external devices (BLE 4.0/SPP/USB). - Android SQLite - Google Billing, in-apps - VoIP and WebRTC integrations React Native skills: - TypeScript - Node.JS (MERN stack) - JavaScript - Redux, - ES6+ - MongoDB - HTML5, React, CSS - Redux - Material UI Web technologies stack: - React.js, - Angular.JS, Angular 2+ - Laravel (PHP framework), - Symfony (PHP framework), - Node.JS, - VueJs - Express.js, - Bootstrap, - Jquery - Integration with social networks (Facebook, Twitter, Vkontakte, MailRu, Odnoklassniki), Google services (e.g. Youtube, Google Cloud Printing), Payment gateways (Braintree, PayPal, Liqpay, Yandex.Money) - Protocols: JSON-RPC, XML-RPC, SOAP, TCP/IP and much much more. You come to us with an abstract idea and after time we’ll submit a fully functional app to AppStore or Google Play Market. We create Tech Specs documentation, mockups, app designs, development itself, application updates as well as upgrades, along with many other services more or less connected with iOS and Android development.