Balint is available for hire

Balint Szabo

Verified Expert in Engineering

Full-stack Developer

Budapest, Hungary

Toptal member since February 11, 2021

Expertise

Web Development CSS Visual Studio Development C#.NET REST API HTML5 Integration Cloud Engineering Cloud Architecture Full-stack

Bio

Balint has 10+ years of experience in web development for clients ranging from multinationals like Nestlé to successful startups like Tresorit. His projects include distributed systems and software architectures for the web, and he has a good eye for design and UX. Balint believes that planning, communication, and good design are equally important for every successful project, whether a highly scalable API or an eye-catching web app.

Portfolio

AVRIS Technologies

ASP.NET Web API, Amazon Web Services (AWS), Vue, .NET Core, SignalR...

Self-employed

Azure, Azure Resource Manager (ARM), .NET, ASP.NET Web API, SQL, HTML, CSS...

Delaware Consulting

Azure, ASP.NET MVC, C#, .NET, .NET Core, Sitecore, Azure Traffic Manager...

Experience

JavaScript - 14 years
C#.NET - 10 years
Integration - 10 years
ASP.NET Core - 8 years
Architecture - 8 years
Full-stack Development - 8 years
.NET Core - 8 years
Vue - 4 years

Availability

Part-time

Preferred Environment

Windows, Visual Studio, Visual Studio Code (VS Code), Azure, Vue, .NET

The most amazing...

...thing I've developed was the distributed back-end infrastructure of the end-to-end encrypted Tresorit platform.

Work Experience

Lead Cloud and Web Developer

2021 - PRESENT

AVRIS Technologies

Planned the full software architecture from the ground up of a system that facilitates real-time control of VR headsets, data ingestion, and advanced analytics.
Developed the full back end of the system in .NET Core, using SignalR and ASP.NET, hosted in AWS (PostgreSQL, Elastic Beanstalk, Lambda, S3) and Backblaze.
Built the full front end of the system in Vue, with real-time data display capabilities and many custom components according to design requirements.
Developed data visualizations and advanced analytics, such as live heatmap generation over videos from all the gaze vector data of users using the VR headsets.

Technologies: ASP.NET Web API, Amazon Web Services (AWS), Vue, .NET Core, SignalR, Backblaze B2, Amazon S3 (AWS S3), Software Architecture, Virtual Reality (VR) Learning, JavaScript, SQL, HTML, CSS, REST APIs, Integration, Web Development, APIs, Full-stack, Full-stack Development, Architecture, Cloud, Cloud Architecture, API Integration, PostgreSQL, ASP.NET Core, Technical Leadership, AWS Elastic Beanstalk, HTML5, Entity Framework, C#.NET, C#, Software Engineering, User Experience (UX)

Freelance IT Consultant

2019 - PRESENT

Self-employed

Developed an SQL code analysis tool used in-house by a client to ensure code standards across projects. Integrated the tool into Azure DevOps pipelines through a SonarQube plugin.
Created a cloud architecture requesting workflow for a client on a .NET and Vue stack based on Azure ARM templates. It was used in-house, enabling teams to bootstrap projects while complying with the client's internal policies.
Developed a .NET Core web application for Nestlé, which was used internally to manage their procurement flows. The app is heavily integrated with SAP Ariba and serves as a fast and user-friendly layer on top, used in multiple regions globally.

Technologies: Azure, Azure Resource Manager (ARM), .NET, ASP.NET Web API, SQL, HTML, CSS, Azure Search, Integration, .NET Core, JavaScript, Vue, REST APIs, ASP.NET Core, HTML5, API Integration, Cloud, Architecture, Full-stack Development, Full-stack, APIs, Web Development, Cloud Architecture, Azure DevOps, Azure SQL, Entity Framework, C#.NET, Microsoft SQL Server, C#, ASP.NET MVC, Software Engineering, Software Architecture, User Experience (UX)

Senior IT Consultant

2017 - 2019

Delaware Consulting

Developed the company's geo-distributed Sitecore-based CMS, served in 13+ regions and languages globally.
Set up a multi-region, complex CI/CD environment, including deployments inside the Chinese firewall with local Azure providers.
Played an active role in pre-sales and project estimations with clients and management.
Migrated the legacy e-autozas.hu portal to a fresh design and ported it to Sitecore. The site is run by one of the biggest electric charging networks in Hungary.
Reduced internal Azure cloud costs by 30% through careful resource planning.
Guided a small team of two to three people as the go-to person, provided mentoring, and assisted with technical questions.

Technologies: Azure, ASP.NET MVC, C#, .NET, .NET Core, Sitecore, Azure Traffic Manager, Azure Virtual Machines, Azure SQL, Azure DevOps, Azure Active Directory, Elasticsearch, Azure Search, JavaScript, HTML, CSS, Cloud Architecture, SQL, REST APIs, Integration, NoSQL, Technical Leadership, ASP.NET Core, HTML5, API Integration, Cloud, Architecture, APIs, Web Development, Entity Framework, ASP.NET Web API, C#.NET, Microsoft SQL Server, Software Engineering, Software Architecture, User Experience (UX)

Software Engineer

2014 - 2017

Tresorit

Developed the distributed back end of the end-to-end encrypted Tresorit platform. Right from the early stages, the system handled millions of requests by thousands of users.
Designed the data storage architecture and API using NoSQL technologies.
Developed internal dashboards used directly by the business analyst and marketing teams for financial analysis and forecasts.

Technologies: ASP.NET Web API, C#, Azure, NoSQL, SQL, JavaScript, Azure Table Storage, Azure Cosmos DB, Entity Framework, Azure Blobs, Azure Queue Storage, Windows PowerShell, Azure Active Directory, Cloud Architecture, HTML, CSS, REST APIs, HTML5, API Integration, Cloud, Architecture, APIs, Web Development, Azure DevOps, Azure SQL, Azure Virtual Machines, C#.NET, Microsoft SQL Server, Software Engineering, Software Architecture, .NET

Software Developer

2013 - 2014

FX Software Zrt.

Developed parts of the company's flagship treasury product, including integrations with clients' banking systems and real-time data access from external data providers, such as Bloomberg and Reuters.
Supported partners—primarily banks and financial institutions—with tracking down bugs together with the financial analyst team.
Helped migrate the company from legacy, CVS-based version control to Git-based workflows and educated colleagues on usage.

Technologies: SQL, Microsoft SQL Server, C#.NET, Windows Communication Foundation (WCF), Financials, Economics, JavaScript, HTML, CSS, HTML5, APIs, C#, Software Engineering, .NET

Front-end Developer

2012 - 2013

BME – Department of Automation and Applied Informatics

Co-developed the UI of a pilot ebook project for one of the major Hungarian bookstore chains.
Fixed front-end and back-end bugs and tracked them in TFS.
Developed parts of the administration module, including user and book management.

Technologies: ASP.NET MVC, JavaScript, C#, Lucene.NET, HTML, CSS, HTML5, Cloud, APIs, Web Development, REST APIs, Entity Framework, C#.NET, Software Engineering, Azure

Experience

Tresorit

http://www.tresorit.com

An end-to-end encrypted, zero-knowledge cloud storage platform with a primary focus on privacy and security. I developed the Azure-based, highly distributed back-end system, which simultaneously manages millions of calls from thousands of connected clients. I use it every day to keep my data synced and secure.

eDriving Website

The website of one of the biggest electric charging networks in Hungary. I built the front end, including widgets and maps, based on pixel-perfect design requirements and ported the legacy back end to Sitecore.

Delaware Website

http://www.delaware.pro

A site that serves 13+ regions and languages, including deployments inside mainland China. I developed parts of the fresh design and front-end functionality, as well as integrations with multiple systems in the back end, running in the Azure cloud.

Education

2008 - 2013

Master's Degree in Computer Science

Budapest University of Technology and Economics - Budapest

Skills

Libraries/APIs

Entity Framework, SignalR, REST APIs, Vue, Lucene.NET, React

Tools

Visual Studio, Azure Traffic Manager, Azure Search

Languages

C#, C#.NET, HTML, CSS, HTML5, JavaScript, SQL

Frameworks

.NET, ASP.NET Web API, .NET Core, ASP.NET Core, ASP.NET MVC, Windows PowerShell

Platforms

AWS Elastic Beanstalk, Azure, Visual Studio Code (VS Code), Windows, Amazon Web Services (AWS)

Storage

Microsoft SQL Server, PostgreSQL, NoSQL, Azure Table Storage, Azure Cosmos DB, Azure Blobs, Azure Queue Storage, Azure Active Directory, Azure SQL, Elasticsearch, Backblaze B2, Amazon S3 (AWS S3)

Paradigms

Azure DevOps

Other

Software Architecture, Software Engineering, Web Development, APIs, API Integration, Cloud Architecture, Integration, Full-stack, Full-stack Development, Architecture, Cloud, Technical Leadership, User Experience (UX), Windows Communication Foundation (WCF), Financials, Economics, Sitecore, Azure Virtual Machines, Azure Resource Manager (ARM), Virtual Reality (VR) Learning

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