Antonio is available for hire
Hire AntonioAntonio Nakic Alfirevic
Verified Expert in Engineering
Cryptography Developer
Location
Zagreb, Croatia
Toptal Member Since
April 12, 2017
Antonio is a software engineer with a master's degree in computer engineering from the Faculty of Electrical Engineering and Computing, University of Zagreb. He's been a full-time developer since 2005—specializing in the Microsoft technology stack. During that time, he's worked as a junior/mid/senior-level developer, software architect, team lead, and consultant. Antonio is proactive, self-reliant, and a good communicator.
Portfolio
QueryStorm
Visual Studio Tools for Office (VSTO), Vue, ASP.NET MVC, Power Pivot...
Calantha Communications (via Toptal)
Microsoft SQL Server, ASP.NET Core, C#, ANTLR, SQL, Git, Unit Testing, GitHub
Dell Ireland
Microsoft SQL Server, C#, ASP.NET MVC, JavaScript, Angular, SQL, Git...
Experience
Availability
Part-time
Preferred Environment
Git, Visual Studio, Windows, Angular, TypeScript 2, SQL
The most amazing...
...project I've designed and implemented is a custom IDE, runtime, and app store called QueryStorm.
Work Experience
Founder
2016 - PRESENT
QueryStorm
- Started a company based on a project called QueryStorm, which is a professional .NET and SQL IDE, runtime, and app store inside Excel. It is designed to make it easier for IT users to work with non-tech users via Excel.
- Created a licensing solution for .NET applications, initially for use in the QueryStorm project. It's a digital signature-based licensing solution—allowing application owners to manage, issue, and revoke licenses and integrate with payment solutions.
- Oversaw a small team of software developers and external contractors during the project.
Technologies: Visual Studio Tools for Office (VSTO), Vue, ASP.NET MVC, Power Pivot, Microsoft Excel, MySQL, PostgreSQL, Microsoft SQL Server, SQLite, .NET, C#, Windows Communication Foundation (WCF), Windows Presentation Foundation (WPF), Cryptography, SQL, Git, Unit Testing, GitHub, Windows PowerShell
Developer (Convert ANTLR2 Grammar to ANTR4 Grammar)
2017 - 2017
Calantha Communications (via Toptal)
- Implemented a prototype RETS (real estate transaction standard) sever. The server communicates with RETS client applications according to the relevant standards and supports a considerable subsection of the DMQL language.
Technologies: Microsoft SQL Server, ASP.NET Core, C#, ANTLR, SQL, Git, Unit Testing, GitHub
Senior Software Developer (Contractor)
2015 - 2015
Dell Ireland
- Developed a B2B eCommerce system as a replacement of a large existing system.
- Designed reusable Angular components for application-wide use.
- Implemented a new functionality at all levels of the application (database, REST API, client libraries, unit tests for client-side, and server-side code).
Technologies: Microsoft SQL Server, C#, ASP.NET MVC, JavaScript, Angular, SQL, Git, Unit Testing, GitHub
Senior Software Developer
2013 - 2015
Recro-net
- Implemented custom integration and reporting solutions that report on data from Microsoft Dynamics NAV and CRM.
- Created a business intelligence and reporting solution for Croatian Airlines—for analyzing the costs and profitability of flights.
- Developed a custom solution for warehouse management. The solution involved a desktop service that integrated with Microsoft Dynamics NAV and a Compact Framework client application. It was built for a local company but ended up not being deployed due to financial issues.
Technologies: Service, Analysis, Power Pivot, .NET Compact, SharePoint, Microsoft Dynamics CRM, Microsoft Dynamics NAV, ASP.NET, .NET, SQL, Git, Unit Testing, GitHub, Microsoft SQL Server
Lead Developer | Smart Electricity Meters Department
2009 - 2013
RIZ-Transmitters
- Developed a set of .NET libraries (APIs) for communicating with smart electricity meters according to relevant industry standards (IEC 62056).
- Built a system for automating the production of meters and related equipment. The system is used by a dozen operators and automates a large part of the work needed to produce, test, and calibrate digital electricity meters and related equipment.
- Developed a desktop application for controlling smart electricity meters and related hardware via different communication channels. This application is used locally in RIZ and by clients for managing their devices locally and remotely.
- Implemented a hand-held device application (.NETCF) designed for reading and programming meters. It's in use by field operators when a remote connection to the equipment is not available.
- Led a small development team, mentored junior colleagues, and managed the development infrastructure, including version control, build automation, virtualization, and time/issue tracking software.
Technologies: .NET Compact, Microsoft SQL Server, Windows Presentation Foundation (WPF), .NET, C#, SQL, Git, Unit Testing, GitHub, NHibernate
Senior Software Developer
2008 - 2009
Biro Data Servis (now under Asseco)
- Developed a library for secure communication with ATM cards according to the EMV (ISO/IEC 7816-4 ) specification. This was used in building a custom kiosk application for our clients.
- Created various applications and libraries for financial self-service devices (ATM, POS terminal, Kiosk).
- Worked as a technical consultant for our client in implementing a custom kiosk solution.
Technologies: .NET, C++/CLI, Windows Presentation Foundation (WPF), Cryptography, SQL
Software Developer
2006 - 2008
Incendo
- Maintained and further developed a shareholder web portal for an investment bank.
- Added a functionality to legacy software (VB6) in the field of investment banking.
- Developed a .NET library for Excel automation which is used in various other projects.
- Built a general purpose deployment and update solution in use by other client applications.
Technologies: Microsoft SQL Server, Visual Basic, C#, ASP.NET, Cryptography, SQL
Junior Software Developer
2005 - 2006
Ekobit
- Worked as part of a large team on an accounting application for a foreign investor.
- Developed various in-house software projects.
Technologies: Flash, JavaScript, HTML, Microsoft SQL Server, C#, .NET, SQL
Experience
Jot
http://github.com/anakic/JotJot is my own open source .NET library for persisting and applying an application state.
Almost every application needs to keep track of its own state, regardless of what it otherwise does.
This typically includes:
- Sizes/locations of movable/resizable elements of the UI.
- Last entered data (e.g. username).
- User preferences and configuration settings.
Jot solves this ubiquitous requirement in an easy and configurable way. It drastically reduces the time and mental effort needed to satisfy this type of requirement.
Almost every application needs to keep track of its own state, regardless of what it otherwise does.
This typically includes:
- Sizes/locations of movable/resizable elements of the UI.
- Last entered data (e.g. username).
- User preferences and configuration settings.
Jot solves this ubiquitous requirement in an easy and configurable way. It drastically reduces the time and mental effort needed to satisfy this type of requirement.
QueryStorm
QueryStorm is an add-in for Microsoft Excel (for Windows). I started it as a hobby project, but it turned into a commercial product after an excellent reception on HackerNews and Reddit.
Its target audiences are data professionals, data scientists, developers, DB admins, and business professionals; basically, anyone who spends any considerable time dealing with data in Excel and is familiar with SQL.
Its basic purpose is to empower IT professionals in Excel by providing:
1. The ability to use to SQL right inside Excel to query and manipulate data and even formatting.
2. A convenient and powerful SQL IDE inside Excel.
3. The ability to connect to various external database engines and easily flow data in either direction.
4. A runtime the enables creating interactive query-powered workbooks that move data between Excel and various databases, as the user interacts with the workbook.
Its target audiences are data professionals, data scientists, developers, DB admins, and business professionals; basically, anyone who spends any considerable time dealing with data in Excel and is familiar with SQL.
Its basic purpose is to empower IT professionals in Excel by providing:
1. The ability to use to SQL right inside Excel to query and manipulate data and even formatting.
2. A convenient and powerful SQL IDE inside Excel.
3. The ability to connect to various external database engines and easily flow data in either direction.
4. A runtime the enables creating interactive query-powered workbooks that move data between Excel and various databases, as the user interacts with the workbook.
QueryStorm
http://www.querystorm.comI owned the creating of QueryStorm, an IDE, runtime, and app store inside Excel. It supports using C#, VB.NET, and SQL inside Excel. It's designed to make it easier for tech and non-tech users to work together in Excel.
Education
2000 - 2006
Master's Degree in Computer Engineering
Faculty of Electrical Engineering and Computing, University of Zagreb - Zagreb, Croatia
Skills
Languages
C#, SQL, HTML, Visual Basic, C++/CLI, TypeScript 2, CSS, JavaScript, TypeScript
Frameworks
.NET, .NET Core, Windows Presentation Foundation (WPF), ASP.NET MVC, ASP.NET, .NET Compact, Entity Framework Core, Angular, Windows PowerShell, NHibernate, ASP.NET Core
Tools
Visual Studio, Visual Studio Tools for Office (VSTO), Git, GitHub, ANTLR, Microsoft Dynamics NAV, Microsoft Dynamics CRM, Power Pivot, Flash, Microsoft Excel, ANTLR 4, Microsoft Power BI
Paradigms
Unit Testing, Concurrent Programming, REST
Storage
SQLite, Microsoft SQL Server, SQL Server DBA, MySQL, PostgreSQL
Other
Regular Expressions, Cryptography, IoC, Analysis, Service, Windows Communication Foundation (WCF), Compilers
Libraries/APIs
REST APIs, Entity Framework, Vue
Platforms
Windows, SharePoint, Azure
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