Stefan Andrei Nicolescu Email & Phone Number

Bucharest, Bucharest, Romania

Working for Haufe Learning eXperience platform as sr. full stack developer.This solution is a user friendly and intuitive/modern way to consume content imported from various sources like LinkedIn Learning, O’Reilly Media etc. or create/import own content through Content Studio. Technologies used:• Frontend: React with Typescript, CSS modules, Storybook, React MaterialUI library, MobX• Backend: microservices using AWS lambda functions, written in Node.js with Typescript, Express.js, SOLID principles, RESTfull API, swagger UI, Redis caching• Databases: Neo4J Graph database, Cypher query language• Functional testing: Chai/Mocha/Sinon, Frontend testing: Jest, E2E testing: Playwright, Integration testing: Pact• Version Control: Git, GitLab• CI&CD: GitLab and Terraform• Cloud: using AWS ecosystem at its full potential (S3, Lambda Functions, Step Functions for long-lasting operations, Load Balancer, Event Bridge, Cognito, SQS, SNS, Cloudwatch, MediaConvert, MediaTranscribe, AWS Secret Manager, Route 53, OpenSearch, Kibana, IAM Security Policies, etc)Responsibilities:* conduct code review* onboard new team members* write new functionalities* refactor code

Bucharest, Romania

888Casino web application is the site allowing users to open online casino games created in house by 888 or third party games like NetEnt, Evolution, Pariplay, Nyx, RedTiger etc.Technologies used:ReactJS with Typescript, Styled Components as frontend libraries,MobX as state management library,Jest, Mocka, Chai, Sinon as unit test libraries,Cypress for E2E automation,PWA - Progressive Web App,.NET C# with applied SOLID principles as backendResponsibilities:* create react components, styled components with CSS content, and write JEST unit test to cover all app. functionality* implement E2E Cypress tests to cover all common cases and application change affected areas* implement regulation features for 888casino site flavors (for .com, .es, .it, US, Canada)* integrate third party games to casino site with for all major game providers vendors* support Apple on Demand game bundles integration* implement C# webapi rest services using SOLID principles: dependency injection, IoC, single responsibility, interface segregation* conduct code reviews* use MobX state management for application services

Bucharest, Romania

Parcel delivery and GIS/maps solutionWorked (as Endava Employee) on a big project in GIS industry regarding organizing package deliveries and collection and seeing / changing different features on map.The project uses latest Microsoft back-end technology (ASP net core 2.1) and latest front-end technology from Google (Angular 6).Technologies used:* ASP net core 2.1, web api services, CQRS architecture, Domain Driven Design (DDD), Azure hosting, Entity Framework 6.1, MS SQL 2017* Client side experience: Angular 6 (working with services/DI, components, modules, directives, third party components etc.), Typescript, ES6 JavaScript, Webpack, OpenLayers, SCSS* Versioning systems: git, bitbucket

Bucharest, Romania

Gaming industryWorking for servers management applications (C# applications) and poker servers (C++ applications).Technologies used:C#, WPF, MVVM, Entity Framework, NHibernate, IoC Containers, TDD, Silverlight, RIA servicesC++ 11, boost, IBM Message QueueReact JS, Typescript & node.js (for hackathon project)I was responsible of creation from the scratch of poker game scenario editor to edit/create new problematic scenarios (using C#, MVVM, WPF).I added new features in our web application handling server maintenance (C#, MVVM, Unity, NHibernate, WebApi).I added new features in stress test application adding new required functionality (C#, async/await, WPF).I was responsible of creating of new testing application from the scratch using mocked data (C++ 11, stl, boost). We use it for adding new test scenarios for our poker server.I refactored parts of our servers (getting rid of MFC containers and replacing with STL ones) and adding new C++ 11 features (like lambda functions, smart pointers and so on).I added several new features into our server and I did bug fixing in our existing code.

Bucharest, Romania

Data analyticsWork for IBM Cognos TM1 suite clients (Perspectives - C++ Exced addin and tm1web - web application). Worked in C++ and Java. Learning JavaScript.Technologies used:* C++, MFC, sockets, threading* Java, AJAX, single page application, DWR (Direct Web Remoting), DOJO Javascript framework, Eclipse* C++, OLAP cubes, Excel integration (user defined functions), detecting memory leaks (LeakDiag)* Java programming, web servicesResponsibilities, achievements:* implemented requested features in a timely manner* porting Perspectives and Architect on 64-bit platform* got involved into addressing urgent problems (with high priority)* make a prototype for new Excel addin - including Office-styled ribbon and sidebar* changing data layer in tm1web web project from old (socket based) protocol TM1JavaAPI to new REST protocol using JSON. Features involved: cube viewer loading, subset loading, title dimension loading and filtering, dynamic MDX query generation, data pagination etc.* solve Java/Javascript bugs in both cubeview and websheet areas* improved English communication skills

Bucharest, Romania

Telecom and remote desktopWork on Netop Remote Control Suite projectTechnologies used:* HTML, Javascript, canvas drawing, web sockets, WT framework, GraphicsMagick* C++, sockets, STL, boost, OpenSSL, HTTP5 protocol, , ATL Server, IIS Extensions, Windows APIResponsibilities, Achievements: * Implementing a Web-based remote control HTTP5 server using canvas drawing, Ajax asynchronous notifications, jQuery framework, Javascript and HTML debugging in Chrome / Firebug, understand various HTML/JavaScript paradigms (to remote control screen / keyboard / mouse)* Create ATLServer SRF pages, create worker threads in IIS extension, using Dojo Javascript framework* Implement new features to NRC Suite, also fixing bugs and adapt to client requirements, porting NRC Suite products to newer versions of Windows (like Windows 8)* Debugging and finding deadlocks or race conditions in new or old code* Improve code performance (by static analysis / dynamic analysis of the code or find function duration)* Implementing OpenSSL RSA public key encryption: generation and usage (encrypting with public key and decryption with private key)* Using LDAP queries (including query pagination) and Active Directory API and interlaces

Bucharest, Romania

TelecomDesign and development of secure Internet based Medianet Innovations client and server applicationsTechnologies used:* C#, ASP.net* COM Programming (ATL COM), WTL, CryptoAPI, Windows Multimedia API, MFC, ADO, MSSQL, MS OLAP, Reporting servicesResponsibilities, Achievements:* Work on No download Chat web site project, on screen transfer rendering* Design and implement C# ASP.net web-application for back-end managing users, groups, welcome scripts* Design and implement C# ASP.net No Download Chat web-application (No Download Chat) used for chat and desktop screen share directly from any web-browser and with no need to install any browser extensions* Create a IE/Mozilla browser extension used for remote support that used a common communication module in which all business logic and GUI and internationalization resides* Used Internet Explorer's COM programming interfaces to enable browser integration and plugging with with core communication module* Used Mozilla's XPCOM programming API to enable browser integration and plugging with core communication module* Working on server side: TCP-IP communication protocol using Winsock completions ports, implementing a server thread pool, HTTP chunking, Cryptography API for server certificate* For Personal Interactive Communicator rich-client, implementation and design of features like conference chat, audio, video, application share, file transfer, conference schedule, audio saving and email-ing

Bucharest, Romania

Payments IndustryDesign & Development WizSalary payroll application, adapting application to low changes.Responsibilities, Achievements:* Design and application development C# ASP.net employee timekeeping data * Update software methodology for calculating salaries, bonuses, salary deductions, time sheets, seniority computation* Design and implementation of Human Resources WizSalary for the personal management in large companies* Mentain Oracle database (designed especially for companies with many employees) and xBase/DBF database (using C++ Codebase library)* Design and writing business module with data cache capability

Bucharest, Romania

ERP solutionDesign and implementation of ISIS Accounting and Reporting application belonging to ISIS ERP (Integrated Strategic Information Systems) and ISIS.net (web version of ISIS ERP using ASP.net, web technology)Responsibilities, Achievements:- Design and implementing sheet foe entering cost centers expenses in ISIS Accounting application (using MFC, Formula One ActiveX grid control and MFC Objective Grid classes)- design and implementation of Microsoft SQL Server database (tables, stored procedures, cursors in stored procedures) - Crystal Reports Design & reports using SQL stored procedures and used from ISIS Accounting and Reporting application and ISIS Commercial Reporting application- Design and Implementing C++ COM+ modules used for ISIS.net web application

Bachelor'S Degree, Computer And Information Sciences, General

Computer And Information Sciences, General