Petar is available for hire
Hire PetarPetar Maletić
Verified Expert in Engineering
Software Engineer and Developer
Daruvar, Croatia
Toptal member since December 9, 2014
Bio
Petar is a seasoned software developer, engineer, designer, and entrepreneur with many years of professional experience. He has developed complex solutions and software products from start to finish, spanning multiple technologies. He is a dedicated and self-motivated individual who thrives in every aspect of software production.
Portfolio
Inventive
Azure Functions, Azure Cosmos DB, Azure, C#, .NET, .NET Core...
BugBuzz j.d.o.o.
Oracle, SQL, Oracle PL/SQL, Dojo Toolkit, Dojo, jQuery, Web Development, CSS...
Skimmer Inc
.NET, C#, JavaScript, Microsoft SQL Server, Software Architecture, UI Design...
Experience
Availability
Part-time
Preferred Environment
Git, Visual Studio, Windows, Azure, JetBrains Rider, Visual Studio Code (VS Code), DataGrip, Adobe Creative Suite
The most amazing...
...app I've developed is a fleet management system with a custom map engine library based on ESRI JS API, developed from scratch and supported through the years.
Work Experience
Principal Software Engineer
2022 - PRESENT
Inventive
- Collaborated to design and develop an app for American Institute of Balance.
- Collaborated with the application development and engineering staff to support new features and functionalities.
- Built the app frontend architecture and design app UI/UX components.
- Supported the design and implementation of the API.
Technologies: Azure Functions, Azure Cosmos DB, Azure, C#, .NET, .NET Core, Entity Framework Core, React, Software Architecture, Solution Architecture, GraphQL, Docker, Microsoft Graph, DevExtreme
Solution Architect
2009 - PRESENT
BugBuzz j.d.o.o.
- Designed and developed various desktop and web applications.
- Worked on SEO, branding, identity, and graphic design.
- Created a custom content management system for small-sized companies.
- Prepared business plans and mentored junior developers.
- Supported business in general and handled tasks related to running the company.
- Integrated social media tools and SDKs into various websites and mobile applications.
- Helped multiple clients finalize problematic projects by providing the needed expertise to bring projects to release.
Technologies: Oracle, SQL, Oracle PL/SQL, Dojo Toolkit, Dojo, jQuery, Web Development, CSS, Full-stack, ASP.NET, Microservices Architecture, DevExtreme, Docker, Azure, React, Angular, TypeScript, JavaScript, MongoDB, Microsoft SQL Server, C#, Node.js, ASP.NET MVC, .NET Core, .NET, Azure Functions, Solution Architecture, Software Architecture, GraphQL, CQRS, MediatR, NServiceBus
Principal Software Engineer
2019 - 2022
Skimmer Inc
- Collaborated to design and develop leading Pool Service Software application. Helped direct, build, and engineer the app foundations and architecture.
- Designed data models, created schemas, wrote stored procedures, maintained data, wrote reports, and fine-tuned the SQL.
- Realized advanced modules including QuickBooks integration, advanced routing, and standalone invoicing/payments module.
- Restructured the software for the future growth of the company.
- Introduced new technologies into the company’s production team.
- Implemented workflows, patterns, and guidelines for code consistency, readability, and maintainability.
- Implemented many other complex technical solutions.
Technologies: .NET, C#, JavaScript, Microsoft SQL Server, Software Architecture, UI Design, UX Design, DevExtreme, DevExpress, .NET Core, ASP.NET MVC, React, React Redux, Database Design, Entity Framework, Microsoft Azure Mobile Services, CQRS, MediatR, NServiceBus, Clean Architecture, Solution Architecture
External Associate and Software Engineer
2008 - 2020
GDi d.o.o.
- Collaborated to design and develop applications of various types and complexity: Windows, mobile/WAP, and web applications, including advanced GUI development and graphic design.
- Created an ATM finder web application with a complex map-based interactive UI allowing users to locate ATMs and branches, get related info, and find directions using map routing; back-end intranet application; database development.
- Built a fleet management and vehicle tracking system from scratch based on GIS technologies (ESRI ArcIMS, ESRI ArcGIS) with a complex map-based interactive UI and reporting system and developed the database.
- Assisted the design and development of applications for providing locating and other services.
- Helped develop a complex fleet cost management system.
- Assisted the design and development of an advanced custom single sign-on security system and developed an intranet SSO web application/portal for managing users, applications, and access rights.
- Conceptualized and wrote a complex JavaScript map engine library wrapped around ESRI JavaScript API and other JavaScript frameworks.
Technologies: DevExtreme, DevExpress, Angular, Esri, ArcGIS, JavaScript, Oracle, Microsoft SQL Server, C#, ASP.NET MVC, .NET Core, .NET, Software Architecture
Experience
Vessel Management System
Designed, developed, and maintained a vessel management and vessel tracking system for GDi d.o.o. company. The system integrates advanced mapping functionality, a complex map-based interactive UI, fleet management and vessel tracking features, reporting, user-defined alarms and service alarm features, geo-locating, real-time vessel positioning, sensors data (Fishery module), and alarm detection.
Cavalry 2 ConnectWise System
A complex internal automation system application for the Cavalry company. The purpose of this system application was to gather and process all the data about hosting services usage that the company provides to their customers. It included advanced parsing and processing logic of the data, applying custom processing rules and heavy validation logic, formatting, and forwarding processed data to the ConnectWise business management platform.
Fleet Management System
Designed, developed, and maintained a fleet management and vehicle tracking system for GDi d.o.o. company. The system integrates advanced mapping functionality, a complex map-based interactive UI, fleet management and vehicle/driver tracking features, reporting, user-defined alarms and service alarm features, geo-locating and routing, real-time vehicle positioning, and alarm detection. Within this project, I also worked on a closely related application for managing fleet costs which communicates with the fleet management system in many ways.
JavaScript MapEngine Library
A complex JavaScript map engine library wrapped around ESRI JS API and other JavaScript frameworks for GDi d.o.o. company. MapEngine was designed to implement many advanced features that ESRI JS API provides, grouping them in modules, enhancing them, and making them simpler to use. On top of that, many other custom functionalities were added, such as custom routing logic, custom clustering logic, advanced layer and map graphics management, and support for multiple geo locating services. The library also supports major mapping services like Google Maps. Bing Maps, and OpenStreet Maps.
SSO Security System
An advanced custom single sign-on security system-platform for GDi d.o.o. company. The system provides single sign-on, authorization, user and application management, and some other service-oriented functions.
ATM Finder
An ATM finder web application with a complex map-based interactive UI for GDi d.o.o. company. The application is designed to allow users to easily locate ATMs and branches by using an interactive map, geolocation service, or other search filters to obtain all the necessary information they need including directions using the map routing. The system is also supported by a back-end intranet application.
Location Based Service Applications
Worked for a GDi d.o.o. company on the design and development of various location based service applications to provide location and other services to their clients.
Content Management System
A simple content management system that is simple to use and provides basic functionalities for content management of a website.
Education
2014 - 2017
Bachelor of Applied Science Degree in Information Technology
Visoka škola PRIMUS - Gradiška, Bosnia and Herzegovina
Skills
Libraries/APIs
DevExtreme, Dojo Toolkit, jQuery, React, Entity Framework, MediatR, ArcGIS, React Redux, ArcGIS JavaScript API 3, Google Maps API, Node.js, NServiceBus
Tools
Visual Studio, Adobe Creative Suite, Git, WebStorm, Microsoft Visual Studio, JetBrains Rider, DataGrip, Esri, Microsoft Graph
Languages
CSS, HTML, JavaScript, C#, TypeScript, SQL, GraphQL
Frameworks
ASP.NET, ASP.NET Web API, .NET, ASP.NET MVC, Dojo, .NET Core, Bootstrap, Entity Framework Core, Angular
Paradigms
Service-oriented Programming, Agile Software Development, UI Design, UX Design, Database Design, CQRS, Clean Architecture, Microservices Architecture
Platforms
Visual Studio Code (VS Code), Oracle, Azure, Docker, Microsoft Azure Mobile Services, Azure Functions
Storage
Oracle PL/SQL, Microsoft SQL Server, MongoDB, Azure Cosmos DB
Other
User Experience (UX), DevExpress, Web Development, Software Development, Front-end Development, Full-stack, Software Architecture, Solution Architecture
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