Haris Zupčević
Verified Expert in Engineering
Software Developer
Vienna, Austria
Toptal member since June 11, 2021
Haris is an accomplished lead developer and software architect who brings an Agile mindset to his work. With over two decades of experience, he's honed his expertise primarily in technologies within the Microsoft stack as well as various front-end technologies. Throughout his career, Haris has contributed to the development of software solutions employed by law enforcement agencies, national tax administration offices, commercial banks, and private companies spanning a wide range of industries.
Portfolio
Experience
Availability
Preferred Environment
.NET, Visual Studio, Azure, Visual Studio Code (VS Code), React, Angular
The most amazing...
...project I've worked on is a set of microservices for a commercial bank hosted on an enterprise service bus.
Work Experience
API Integration Specialist
Bitventure Consulting Pty Ltd
- Created a bank statement service to retrieve bank statements from major South African banks.
- Implemented payment processing and bulk card payments.
- Created a card disbursement service to manage the allocation of funds to pre-paid cards.
Senior .NET Developer
TBC Bank - Main
- Participated in the back-end development of mobile investment applications.
- Implemented back-end capabilities for rewarding the bank clients.
- Developed the back-end for displaying the instrument charts.
Full-stack Engineer
GeneDx
- Worked in a cross-functional remote team on the front-end and back-end of the GeneDX Provider Portal (www.genedx.com) and Admin Portal.
- Developed and integrated additional functionalities necessary to facilitate the company's acquisition by Sema4, subsequent merger, and decoupling systems from the previous parent company (BioReference Labs).
- Transferred legacy system components to more modern and sustainable technologies.
- Handled their integration with other systems in the organization.
Technical Lead
Buildfire
- Designed and implemented reusable components for mobile applications.
- Tracked the performance of team members and coached them through the self-improvement process.
- Collaborated with other teams, ensuring that we met the client's expectations.
Lead Developer
MIBO Komunikacije
- Collaborated with hardware specialists in designing IoT solutions for law enforcement agencies.
- Implemented software solutions to facilitate the processes for financial institutions.
- Integrated solutions with different software and hardware platforms.
Senior .NET Developer
MIBO Komunikacije
- Collaborated within a scrum team, utilizing extreme programming practices, to develop enterprise software across diverse domains.
- Cooperated with various specialists on hybrid software-hardware solutions.
- Formulated and executed strategies for optimizing databases and aggregating data to enhance overall performance and efficiency.
.NET Developer
Softcom
- Developed web applications based on ASP, ASP.NET, and ASP.NET MVC.
- Used JavaScript and jQuery for client-side scripting.
- Developed .NET desktop applications using Windows Forms.
Experience
GeneDX Provider Portal
The system seamlessly integrates with various payment systems, insurance providers, and prior authorization systems, facilitating efficient processing and coordination of payments, insurance claims, and authorization procedures.
GeneDX Provider Portal API
The system seamlessly integrates with diverse payment systems, insurance platforms, and prior authorization systems.
I was actively involved in implementing new workflows, performing refactoring tasks, addressing bug fixes, introducing enhancements, and optimizing stored procedures.
Vatrosistemi | Fire Safety Equipment Inspection
It specifically targets the periodic inspections of fire extinguishers and hydrants conducted by certified fire safety personnel. The implementation of this system brings several key advantages, including adherence to industry standards and local regulations, elimination of paper-based processes, streamlined equipment identification through handheld device scanning, and comprehensive auditing of user actions.
Additionally, the system facilitates the generation of required legal documents in PDF and Excel formats, ensuring easy compliance.
I served as the lead developer and the principal architect of the system, overseeing its design and ensuring its overall coherence and functionality.
Investor Register
I served as the solution architect for this project, overseeing its design and implementation. The application I worked on is a multi-platform solution that can be used across different operating systems and devices.
GeneDX Admin Portal
ShyKids (Previously EurekaKids) Online Toy Shop
Track Me Plugin
Mobile Plugin for Fetching and Displaying Data from InBody Digital Scales
Balance Sheet Processing for Credit Risk Calculations
Sparta
Casino and Betting Online Management
Licensed Currency Exchanger
Skills
Libraries/APIs
React.js, Entity Framework, LINQ, Web API 2, jQuery, REST API, Node.js, iText, API Development, Vue.js, Google Maps Development, Stripe Development, Xamarin, Xamarin, Web API, Windows Development, WooCommerce Development, JavaScript, Stripe Development, React.js, Google Maps Development, Salesforce API, Polymer, AWS Amplify, SignalR, CyberSource
Tools
Visual Studio .NET, Visual Studio Development, iTextPDF, TFS, Webpack, Visual Studio Development, Jenkins, Git, GitHub, C#, Capacitor, Google Compute Engine (GCE), Mobile App, Figma, Babel, Microsoft Access Development, xUnit, SonarQube, Helm
Languages
C#, JavaScript, .NET, HTML, SQL, CSS, HTML5, TypeScript, Stored Procedure, T-SQL (Transact-SQL), Sass, CSS3, ECMAScript (ES6), Python, Active Server Pages (ASP), VB.NET, GraphQL, XAML, XML, SCSS
Frameworks
.NET Core, .NET, AngularJS, Angular, ASP.NET MVC, Web Development, ASP.NET, React Native, ASP.NET, Razor, Express.js, ASP.NET, ASP.NET Core MVC, .NET, Entity Framework Core, ASP.NET, Windows Presentation Foundation (WPF), Ionic, Bootstrap, Blazor, Angular Material, Tailwind CSS, Next.js, .NET MAUI, Redux, Vanilla JS, Material UI, ASP.NET, OAuth, Flourish, Jest, Telerik Kendo UI
Paradigms
Agile Development, Microservices Development, Web Application Architecture, Web Architecture, REST, Agile Development, Scrum Master Consulting, Desktop App Development, MEAN Stack, Service-oriented Architecture (SOA), Model View Controller (MVC), Best Practices, Mobile App Design, Object-oriented Programming (OOP), DevOps, Application Architecture, Azure DevOps, Testing, Responsive Web Design, MVC Design, Refactoring, Multi-platform Development, Clean Code, Unit Testing, Design Patterns, Agile Development
Platforms
Windows Development, Software Design Patterns, Azure, Xamarin, AWS, Cloud Engineering, Firebase, Android, Microsoft Development, Apache Kafka, AWS Lambda, WooCommerce Design, WordPress Development, MuleSoft, Docker, Visual Studio Development, Pimcore, iOS, Mobile App Design, Azure Functions, Telerik, Kubernetes
Storage
SQL Server, SQL, SQL Server 2017, SQL Server, SQL Server, SQL Server, SQL Server, Database, NoSQL, SQL, SQLite, Firebase Realtime Database, Firestore, MongoDB, PostgreSQL, SQL Server, Azure Queue Storage, SQL Server, Google Cloud Development, SQL, MySQL, Elasticsearch
Other
APIs, API Integration, Software Architecture, Architecture, System Architecture, System Architecture Design, Full-stack, Web Development, Front-end, Legacy Software, Integration, Technical Leadership, Digital Transformation, Business & Digital Transformation, Paperless Trans, CI/CD Pipelines, GitHub Actions, Back-end Developers, Solution Architecture, Performance Optimization, Multi-language Support, Multi-language Development, Data Structures, Data Architecture, Code Review, Mobile App Design, Twitter Bootstrap, MVC Frameworks, Data Modeling, Mobile Apps, Mobile App Design, Cloud Engineering, Front-end Development, Serverless, Windows Communication Foundation (WCF), Remote Development, Lambda Functions, DOM, Material Design, IIS, Windows Development, Front-end Architecture, Team Leadership, Remote Team Leadership, Cross-functional Team Leadership, Excel Development, Fiscal Management, Geolocation, Xamarin.Mac, Leadership, Software Design, Estimations, Deployment, Scheduling, Graphic Design, PDF, Server-side PDF Generation, Data, RESTful Services, WCAG 2, Casinos & Gaming, Gambling, Cloud Services, UI Development, UI Development, UX Development, SaaS, Responsive Design, Cross-browser Compatibility, Dashboard, Data Visualization, RPC, Reports, Web Services, Distributed Systems, Containerization, AWS Cloud, Point of Sale, POS, Stripe Payments, Payment APIs, MERN Stack, Microsoft Stack, Business to Business (B2B), Laboratory Information Management System (LIMS), Startup Development, Authorization, Authentication, Identity, Hardware Integration, Azure, SSO Engineering, QR Code Development, Maps, Storybook, Data Mining, Geospatial Data, API, Message Queues, Architectural Patterns, System Security, Cloud Architecture, Design Systems, Atomic Design, Web Scraping
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring