Web Development, Frontend, Backend, Full-Stack, Database Development, .NET, React

• Agile/Scrum methodology
• Continuous Integration
• Cloud Deployment (Azure Resource Management)
• Micro Services Architecture (Actors -> Messaging -> Saga Store)
• Accumatica Web ERP customization

Tech stack:

(Azure ARM automated environments deployment), GoCD (CI), Selenium (automated Web integration testing), NUnit, JavaScript, jQuery, Git SourceTree, GitFlow, Jira

Windows / Web / Mobile applications, Web Services, Database Development, Responsive / Interaction Design, Reporting

• IT Project Management
• Application Lifecycle Management
• Software Development

Derived from previously developed online retail engine, WebBills web solution represents a unique take on online bill payment, in form of a shop-cart based web solution.

Projected and implemented with demonstrated high level of code/component reusability (Live Basket, DynamicTreeView, payment gateway, elastic design, helper classes and methods).

Developed jQuery plugin for zooming in on the bill form images, both by mouse over and programmatically (selecting data input controls triggers zooming in on the exact location of required data within the presented bill form image).

Derived from previously developed online retail engine, WebBills web solution represents a unique take on online bill payment, in form of a shop-cart based web solution.

Implemented Content Management System from WebTelegram project and developed it further into a fully-fledged back office administration system. Added registers for handling product categories, products, receipt and dispatch of goods, stock handling, reporting system, etc.

C#, jQuery and AJAX based dynamic shopping cart user control ("Live Basket"), implemented at MasterPage level for seamless integration throughout the front-end layer, with on-the-fly database CRUD operations through Entity Framework. Heavy UpdatePanel usage.

DynamicTreeView custom control for navigating through product groups/categories. Supporting n-levels of hierarchy, dynamic (runtime) CSS files generating and saving, real-time reflection of group data updates, etc.

JavaScript and CSS3 based responsive ("elastic") design adapts automatically to all screen resolutions, allowing identical look-and-feel across all major platforms/browsers and devices with full on JavaScript support. Achieved by invoking the JavaScript routine for catching windows resizing events and adjusting the layout accordingly, and combining percentage-based and font-size (em) based units throughout the CSS for master page element sizing. Another advantage of this approach is the percentage based sizing for container elements that actually works (yes, height too).

Globalization and localization achieved by utilizing a hybrid multilingual concept, both on the application level and persistence level (database). Introducing another language is now a simple matter of translating UI textual elements within a single file and inputting models' culture-dependent properties through CMS.

Building upon previous project (Belgrade 5 days’ weather forecast), developed a single page Web application depicting Energoprojekt global presence along with real time weather forecast for each location state's capital.

Generated SVG world map (low details level), with JavaScript timer based functions for looping through cloned and highlighted objects representing the countries in alphabetical order. For each country object that gets highlighted, designated window displays country info, the capitol city and current weather conditions, driven by asynchronous interaction with Yahoo Weather API web service.

The weather info gets refreshed by asynchronous call issued in regular intervals and cached as JSON in-memory data representation object in the meantime.

Developed web application for displaying local (Belgrade) 5 days’ weather forecast on Samsung InfoWall system (4 x 75 inches video display).

Consuming and manipulating JSON data from weather info provider web service.

Implemented real-time (XML based) translation of data, with local clip art images repository for weather symbols (sun, clouds, storm, winds, etc.). Wind direction and intensity is represented by 3D arrow images that shift in sync with degree and speed info.

Web solution for ordering luxury telegrams with gifts, executed as a single page Web application, with multiple functional controls wrapped in separate UpdatePanels within a single ListView control for asynchronous processing of an order's elements (luxury forms, gifts, sender & recipient info, text message with real-time letters and words counter/calculator, live shopping cart, etc.).

Developed CMS includes registers for inserting/editing/archiving luxury forms and gifts as well as a BackOffice administration section for order/purchase management and extracting various SSRS and Excel reports.

Integrated, modified and customized the third party (designated bank) credit card payment system, with full transaction management, including tracking and analyzing of payment gateway activities.

The known issue of SAP BusinessObjects Crystal Reports Server manifests itself by NOT releasing the concurrent access license (CAL) sessions after users have closed the report browsing windows/tabs, rendering the entire reporting server useless for an arbitrary period of 20-70 minutes.

Investigated, projected and developed C# Web-based solution overcoming those issues by overtaking the handling of the (URL Reporting) requests and token-based authentication, effectively managing ASP and SAP Enterprise Sessions lifecycle.

One of the key aspects to the solution was intercepting the browser closing event (client-side) and issuing last-second AJAX request to the server for tidying up the sessions afterwards.

Responsible for tax forms generating engine, heavy client-side scripting routines, innovative GROSS & NET (reversed) algorithms with real-time sliding data input and calculating controls.

Runtime injection of HTML elements and JavaScript code, heavy AJAX usage, reducing resource utilization (minimized database and web servers’ round-trips).

Advanced ListView/EntityDataSource usage - dynamic multi-level nesting (single forms within cumulative forms). Entity Framework over several Oracle 11g schemes.

Project migration:             

NET 2.0 -> 3.5 -> 4.0

Database migration:         

Oracle 10g -> 11g

Advanced XML/XSLT/XPath - real time HTML forms generator. Single .aspx page and XSLT transformation technology for creating dozens of tax forms based on XSD scheme files provided by Ministry of Finance Tax Administration.

Engaged until:

10/2013

• Development and implementation of Warehouse Management System
• CipherLab 8001 barcode scanner integration (extracting and processing barcode scanner gathered data).

Developed a vertical solution (over Datalab Pantheon ERP) for extracting and processing CipherLab 8001 barcode scanner gathered data.

Solution included bulk importing of .CSV documents (suppliers' invoices) and cross-checking it against barcode scanner data gathered during import related Customs clearance procedure.

Other features include barcode supported creating of sales invoices and ledger books/stock inventories, as well as complex data extracting and reporting system for efficient analysis and automated order management (nested SQL queries for retrieving the right products/colors/prints/materials/dimensions and automatic creating of orders for low stock items).

• ERP system consulting and implementation
• Development of vertical software solutions (applications, procedures and reports), complementing and extending ERP functionalities
• Integrating various platforms (existing LOB software) and devices (mobile devices, wireless data terminals, barcode scanners, digital scales and fiscal cash registers) into ERP based eco-system
• Implementing external/remote data collection, synchronization and centralization, allowing seamless integration of remote POS activities
• Providing 2nd and 3rd Line of Tech support

Localized UI part of an embedded OS and created step-based embedded application according to the client's requests/use case scenarios, covering a couple of bar-code standards (EAN-8, EAN-13 and some "exotic", presumably custom ones).

Last step included creating formatted memory dumps for exporting gathered data to external processing system (ERP).

Projected, developed and implemented an ERP based vertical solution comprising of several applications, covering the full integration of remote sales force mobile devices into Datalab Pantheon ERP workflow.

Requests regarding logistics, route-planning, merchandizing and remote sales activities were carefully translated into a series of modules, each one responsible for a set of logically grouped business processes.

The final result was efficient, streamlined and cost effective system allowing full data synchronization (clients, pricing, discounting, invoicing) between mobile devices and back office ERP system, resulting in completely automated invoice generating and stock supply management, with analysis and reporting system thrown in for an extra "kick".

Developed until:

04/2007