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
- C# - 20 years
- .NET - 20 years
- C#.NET - 16 years
- Technical Leadership - 10 years
- Microsoft SQL Server - 10 years
- Software Architecture - 8 years
- Angular - 6 years
- React - 5 years
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, Entity Framework, LINQ, Web API 2, jQuery, REST APIs, Node.js, iText, API Development, Vue, Google Maps API, Stripe, Xamarin.Android, Xamarin.iOS, Web API, Windows Forms (WinForms), WooCommerce API, MobX, Stripe API, React Redux, Google Maps, Salesforce API, Polymer, AWS Amplify, SignalR, CyberSource
Tools
Visual Studio .NET, Visual Studio, iTextPDF, TFS, Webpack, Visual Studio Tools for Office (VSTO), Jenkins, Git, GitHub, C#.NET WinForms, Capacitor, Google Compute Engine (GCE), BuildFire, Figma, Babel, Microsoft Access, xUnit, SonarQube, Helm
Languages
C#, JavaScript, C#.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, ASP.NET Web API, ASP.NET, React Native, MVC Razor, Razor, Express.js, ASP.NET Core, ASP.NET Core MVC, .NET 4, Entity Framework Core, ASP.NET Web Forms, Windows Presentation Foundation (WPF), Ionic, Bootstrap, Blazor, Angular Material, Tailwind CSS, Next.js, .NET MAUI, Redux, Vanilla JS, Material UI, ASP.NET Identity, OAuth 2, Flourish, Jest, Telerik Kendo UI
Paradigms
Agile Software Development, Microservices, Web Application Architecture, Web Architecture, REST, Agile, Scrum, Desktop App Development, MEAN Stack, Service-oriented Architecture (SOA), Model View Controller (MVC), Best Practices, Mobile Development, Object-oriented Programming (OOP), DevOps, Application Architecture, Azure DevOps, Testing, Responsive Web Design (RWD), MVC Design, Refactoring, Multi-platform Development, Clean Code, Unit Testing, Design Patterns, Test-driven Development (TDD)
Platforms
Windows, Software Design Patterns, Azure, Xamarin, Amazon Web Services (AWS), Google Cloud Platform (GCP), Firebase, Android, Microsoft, Apache Kafka, AWS Lambda, WooCommerce, WordPress, MuleSoft, Docker, Visual Studio Code (VS Code), Pimcore, iOS, Mobile, Azure Functions, Telerik, Kubernetes
Storage
Microsoft SQL Server, SQL Triggers, SQL Server 2017, SQL Server 2016, SQL Server 2012, SQL Server 2008, SQL Server 2008 R2, Database Architecture, NoSQL, Azure SQL, SQLite, Firebase Realtime Database, Cloud Firestore, MongoDB, PostgreSQL, SQL Server 2014, Azure Queue Storage, IIS SQL Server, Google Cloud, SQL Stored Procedures, 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, Solution Architecture, Performance Optimization, Multi-language Support, Multi-language Development, Data Structures, Data Architecture, Code Review, Mobile App Development, Bootstrap 4, MVC Frameworks, Data Modeling, Mobile Apps, Mobile App UI, Cloud, Front-end Development, Serverless, Windows Communication Foundation (WCF), Remote Work, Lambda Functions, DOM, Material Design, IIS, Windows Services, Front-end Architecture, Team Leadership, Remote Team Leadership, Cross-functional Team Leadership, Excel Add-ins, Fiscal Management, Geolocation, Xamarin.Mac, Leadership, Software Design, Estimations, Deployment, Scheduling, PDF Design, PDF, Server-side PDF Generation, Data, RESTful Services, WCAG 2, Casinos & Gaming, Gambling, Cloud Services, UI Components, User Interface (UI), User Experience (UX), SaaS, Responsive Design, Cross-browser Compatibility, Dashboards, Data Visualization, RPC, Reports, Web Services, Distributed Systems, Containerization, AWS Cloud Architecture, Point of Sale, POS, Stripe Payments, Payment APIs, MERN Stack, Microsoft Stack, Business to Business (B2B), Laboratory Information Management System (LIMS), Startups, Authorization, Authentication, Identity, Hardware Integration, Azure Data Lake, Single Sign-on (SSO), QR Codes, Maps, Storybook, Data Mining, Geospatial Data, API Design, Message Queues, Architectural Patterns, OAuth, Cloud Architecture, Design Systems, Atomic Design, Web Scraping
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