Sergey Backend Developer

  • Ukraine

ID: 10866

About Me

6+ years of experience in web development (PHP/MySQL, NoSQL, JavaScript, etc) Expert in OOP, design patterns, TDD/BDD, highload, complex database development, frontend development, system architecture building with UML using and etc. Experience in team leading from 3 to 9 persons and starting up project from scratch in this role. Experienced in server administration on the intermediate level - ubuntu, debian, bash scripts, web-server installation and customization, web-servers monitoring. Experience in projects virtualization and cloud-based architecture, mainly with Docker and Docker Swarm. Smart approach to Restful API building. Currently i'm passionate about Docker, Go Lang and C. I'm familiar with standard algorithms, data structures and other approaches which is behind programming language itself and closer to computer science. PHP guru, Symfony2 expert, GOpher.

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Skills description

Ajax
Ajax is a revolutionary idea that appeared in 2005 and almost immediately changed the web development world. In Jesse Harettom published article were revealed some based approaches of how to optimize the development of web solutions to avoid the web pages overloading. Then the Ajax appeared. Ajax is not an independent technology, but rather the concept of using multiple related technologies. Ajax model works like this – user visits a website and clicks on any elements, the web browser immediately sends a target request to the server, and the server gives only that part of the document which was changed. Simple, but much faster! What should we do to hire the best Full Stack Ajax Developer? Well, you can surf the internet for ages of just find good Ajax Freelancers here! Hiring an Ajax Programmer is not hard anymore! Furthermore, on AOG you pay only for approved hours and tasks, no any extra fees for search service or something! Check out the online catalogue or ask us if you have some any additional questions.
Android
AOG follows IT trends and has experts in the latest technologies. Android is a mobile operating system for smartphones, tablets, e-books, watches, netbooks, smartbooks, Google glasses and other devices. Originally the system was developed by Android Inc. Later on Google bought it and now Open Handset Alliance initiated by the company is in charge of Android platform development and support. This system is developed on Linux core and Java from Google. Lots of modern devices are designed on Android and it is constantly developing. Today voice-based features (calls, texts, navigation), multitasking of apps, TV recording, video calling and multiple language support are available. Android devices are set for native and instant apps. Gaming industry develops thousands of products for devices working on Android system. This technology is wide-spread for startups and misc mobile apps. Android developers are on demand now and AOG offers its clients the best Android experts. Check the skills of our IT talents and choose the one for your project!
AngularJS

AngularJS technology is an open source JavaScript based framework proudly developed by Google. AngularJS is designed for a single-application development, using only traditional HTML, CSS and of course JavaScript code. Its goal is an expanding of browser applications using MVC pattern, as well as a simplifying of the testing and development processes.

AngularJS was designed with the strong conviction, that the declarative programming suits best for building good user interfaces and descripting the software components, while the imperative programming suits to describe the business logic. Simply speaking, AngularJS looks like perfectly optimized web framework, aimed to make a frontend programming much easier.

AngularJS proves its popularity by numerous projects like:

As you can see all these projects have simple and user friendly structure. Angular is used to build education websites, platforms for job search, travel, business, shopping and more. Even Google uses Angular for its projects like Save the Date or Google Allo.

No wonder this technology is very popular among freelancers from Ukraine. Experienced FrontEnd Angularjs developers are available to be hired for projects of different complexity levels. AOG appreciates dedication and professionalism, so we offer you only top rated freelance developers!

Request the best specialists for your project below!

HTML5
HTML5 is a next version of outstanding, great and notable HTML. The working group on HTML5 includes AOL, Apple, Google and other technology sharks. The new version includes a number of new tags and elimination of some obsolete or irrelevant tags. It was done to create a comfortable development environment for the producing of new high-quality pages. That was a long awaited step, because the UI and UX trends change the web space and tech requirements annually. We know all about hiring the Experienced Full Stack HTML5 Developers from an inside! No matter it is Middle FrontEnd HTML5 Freelancer or a Highly Qualified Senior HTML5 Developer – we know how to find really effective team! AOG is a basecamp for professional freelancers who really understand what is professional FrontEnd development. Just choose a contractor and get a 24/7 managers support!
iOS
AOG follows IT trends and offers experts in cutting edge technologies. iOS is a mobile operating system developed by Apple Inc. Originally it was designed for iPhone, with time it became applicable to support other Apple products: iPad, iPhone and iPod. This system ships with various system apps like Mail, Phone and others. iOS Software Development Kit (SDK) has tools and interfaces for efficient usage of apps installed on iOS Home screen. It takes the second place in the world after Android system. iOS is popular among its users due to simplicity of interface and mainly to multitasking that is supported at location changes, voice over IP, fast app switching etc. There is no person who does not know about Siri, a personal assistant for iOS users. Siri is able to perform spoken commands and do various commands from making a call or texting to someone to searching for needed locations. In the latest version developers improved it to even faster answers and integration with Wikipedia and other resources. Even its voice has been changed. iOS experts at AOG are experienced and ready to join interesting projects. Check their skills and hire a good iOS developer for your project!
JavaScript
Remember all that animated menu varieties, scale and parallax effects that are frequently used on almost all web pages today? Here is an age-long secret – it’s a JavaScript magic! Cool, right? Almost all Experienced FrontEnd Developers use JavaScript magic to make blank web pages looking more interesting and brighter. JavaScript is also used for the deep server side programming (like the programming languages Java and C #), game development, stationary and mobile applications producing. Top developers worldwide work with JavaScript everyday. You can choose a Middle JavaScript Developer or even a Senior Full Stack JS Programmer and we will help you to manage your developers! We have 5 Talent integration managers that are available 24/7 for you!
jQuery
More than half of the web sites you surf everyday are written using JQuery. Striking news? Yeah! JQuery became a JavaScript monopolist! JQuery is probably the favorite tool of every Experienced FrontEnd Developer. In fact, JQuery is a complete JavaScript real-time library and it tends to be the most popular JS-based framework today. jQuery professional syntax was designed to make the navigation more convenient. It offers us a much easier items selections process, clear animations creation principles and faster AJAX-applications developing algorithms. It also provides a good chance for Full Stack JQuery Developers to use plugins on the top of the JavaScript code library. Using these features, Experienced JQuery developers can create high level animated effects. Need some assistance? Ask our managers and they will help you to choose a real JQuery-Ninja for your needs! AOG works 24/7!
Mobile
Today, mobile traffic constitutes its deserved lion's share of total digital traffic worldwide. Moreover, smartphones stay with us almost always, so it’s obvious that mobile-oriented business may become much closer to the audience! As a result, those who are “mobile” have much more chances to engage the potential customers into their brand story. That is really why the industry of mobile applications and mobile-adaptive web solutions is freely blooming now! If you decided to hire an experienced mobile developer, make it clear what technical tools he already use. Modern IT market offers both teams (professional groups of Frontend Mobile Developers and Backend Mobile Developers) and independent Full Stack Mobile Developers. All the developers presented on this site are professionals with ages of dynamic experience in mobile application development. Great variety of different professionals with huge and outstanding arsenal of needed tools/technologies allows you to choose a performer with the set of skills that is really necessary in your individual business case. What is unique? You can hire both freelance developers or outsourcing company team on AOG!
MySQL
Well, it’s MySQL! The most popular thing within the database world. Did you ever know that even Apple use it as their main database ground? That might sound incredible considering Apple security level but still, it is true! MySQL was developed by "TLC" in order to improve very large databases processing performance. MySQL DBMS was created as a strong non-commercial alternative to other commercial-oriented systems. MySQL was originally quite similar to the simple mSQL system. During the long time, it was expanding constantly, that is why MySQL is probably the most optimized and errors-free DBMS now. It is used primarily for creating dynamic databases for web pages because of its excellent language support. Highly Qualified MySQL programmers are the professionals who may really know how to set up any database in an appropriate way. Each of the Full Stack MySQL developers presented on the AOG has enough experience to help you with your databases. Also, they may join your project as technical specialists if you want. MySQL Freelancers are available around the clock, so you can choose the appropriate timelines and deadlines to make the cooperation more convenient.
Python
The “Python” name was borrowed from the TV show called Monthly Python and a language itself was developed in 1990. Python supports different programming modules and packages that promotes modularity and smart code reuse. Python interpreter and standard libraries are fully available for all the major platforms in compiled and original versions. Python authors were guided by a philosophy of simplicity and immediacy, as an unwavering guarantee of quality. Python’s philosophical paradigm implies a harmony, beauty and an avoiding of excessive complexity. That's why Python is considering as one of the most easiest programming languages and as the very prospective one. The so-called generation of Python is quite young and very progressive. This is why even highly qualified Python developers are still quite young, but ambitious professionals. Python freelancers have an experience in the complex implementation of dynamic interactive web sites and web applications. Python has no limits, so Full Stack Python developers professionalism is limitless too. AOG offers you to work directly with the Python developer and our managers will help you 24/7!
Symfony
Symfony Technology offers an open PHP framework that implements a so called MVC concept and automates the most common web tasks. It is a widely customizable system designed for web applications developing and managing. Today, it’s available under the worldwide known MIT license. Furthermore, Symfony is a free software, so its popularity scales are truly incredible! The very first version was launched on 18 October 2005. Symfony is aimed at accelerating the creation and support of different web applications and helps developers to avoid time-consuming while solving any trivial problems in development (eg. validation forms writing). High skilled NET Developers from Eastern Europe already took the best places on the IT market! For example, it will be decidedly a good choice to hire an experienced freelance NET Developers team from Ukraine. Combining good technological skills and budget-friendly rates, Ukrainian Full Stack Dot Net Developers may be definitely good technical partners for you. Find them on AOG!
CSS
CSS is a true cornerstone of frontend programming. CSS technology allows us to build the structure of web pages quickly, comfortably and without wasting time. CSS is also known as a Junior Frontend Developer starting point :) CSS is mostly used for visual presentation of pages written using both HTML or XHTML, however CSS format can be successfully applied to other different types of XML-documents. Today, CSS is one of those essential tools which took the A-line in the arsenal of every freelance or agency's FrontEnd developer. Some people even are even joking that CSS and HTML may be taught in schools soon. And that’s not just a dull joke, because CSS has become so common that it is now virtually everywhere. While looking for a qualified Full Stack CSS developer, ask the candidates to send you some links to the websites they have developed. Check them out and you will find out whether this person has enough skills or not. Using AOG you can quickly get the future contractor much easier, because all our CSS freelancers have the relevant and verified experience.
MongoDB
MongoDB is database management system that doesn't require a circuit description tables. MongoDB occupies a niche between fast and scalable systems that operate data in the key-to-value form and relational DBMS which are more convenient in queries forming. MongoDB code is written using C ++ and distributed under the license “AGPLv3”. The main conceptual advantage of the system is quite flexible language of queries forming. Information storage and documentation language used in the system is much more productive than others. It may allow you to use resources much more efficiently and comfortably while managing the data sets. Database programming is a very specific IT-field. That is why you may need a highly experienced Mongodb freelance developer to get your DB tasks done. Obviously, if you are rapturously planning to offer a great code challenge, it would be probably better to hire a Middle or Senior Mongodb Developers ;) On the AOG we use sign the contracts in the English jurisdiction, so the freelance developers contracting processes are absolutely secure and trustworthy.
Backend
A back-end developer is in charge of server side of a project, logic and integration of front end team development. One of the main responsibilities of a back-end team is coding in a general language, mostly in Java, C# and PHP. Recently Microsoft and the .NET community puts remarkable emphasis on C#. Ruby, Python and other technologies are growing in demand too. Back-end developers are broad specialists with expertise in: versioning; data modelling / conceptualization; code optimization; caching; C; security issues; database design; any web application language with expertise on at least one framework; cloud SaaS applications. If you need a back-end developer or a team check the best IT experts from the list below! AOG works only with reliable and trusted developers!

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