Laszlo is available for hire

Laszlo Gyori

Verified Expert in Engineering

Software Developer

Budapest, Hungary

Toptal member since February 14, 2022

Expertise

Full-stack Team Leadership Code Review Technical Leadership .NET JavaScript ASP.NET Visual Studio Development C#Unit Testing SQL REST APIs Microsoft SQL Server Microsoft Teams Development C

Bio

Laszlo is a seasoned developer and leader with a decade and a half's worth of experience. With hands-on experience in all stages of software development and managerial duties, he is a life-long learner, completionist, and problem solver. Laszlo's expertise includes back-end services with .NET 6, databases using SQL and Oracle, front end on Angular 13, and cloud technologies such as AWS and Azure.

Portfolio

Tel.io

.NET, Entity Framework Core, Docker, Kubernetes, C#, Software Architecture...

Prozenda

.NET, Azure, Docker, Kubernetes, Entity Framework Core, gRPC, Angular...

Tata Consultancy Services

ASP.NET, Windows Communication Foundation (WCF), Oracle, JavaScript, HTML, CSS...

Experience

.NET - 17 years ASP.NET - 17 years JavaScript - 17 years Unit Testing - 13 years SQL - 10 years Entity Framework - 10 years Azure - 5 years Angular - 5 years

Availability

Part-time

Preferred Environment

Windows, .NET, C#, React, Amazon Web Services (AWS), Visual Studio

The most amazing...

...opportunity I've had was to design and lead the team that implemented applications used for processing my country's 2011 census data.

Work Experience

Solution Architect

2022 - PRESENT

Tel.io

Was tasked, as a solution architect, with assisting in creating a strategy to split a huge legacy monolith to use modern, microservices-based architecture.
Helped introduce new architectural components, like containerization, queues, and buses.
Regularly educated coworkers on the advantages of microservices architecture and various tools in the form of presentations.

Technologies: .NET, Entity Framework Core, Docker, Kubernetes, C#, Software Architecture, React, gRPC, Microservices, APIs, Architecture, ASP.NET Core, C#.NET, REST APIs, Microsoft SQL Server, Git, Technical Leadership, ASP.NET MVC, Razor, .NET 6, HTML5, T-SQL (Transact-SQL), Full-stack, Application Architecture, API Integration, Web API, Blazor, Tailwind CSS, Visual Studio Development, Microsoft Teams, Single Sign-on (SSO), Microsoft Azure, Solution Architecture

Development Manager

2018 - 2022

Prozenda

Worked actively on high-traffic services with more than one billion requests per day for the travel industry's largest B2B provider.
Oversaw the development of a lifestyle management portal as part of a modernization project with multiple teams of 15 people altogether.
Owned technical leadership in the company, including hiring and training.

Technologies: .NET, Azure, Docker, Kubernetes, Entity Framework Core, gRPC, Angular, Unit Testing, C#, Code Review, .NET Core, Interviewing, HTML, JavaScript, CSS, Entity Framework, Team Leadership, Software Design, TypeScript, ASP.NET Web API, APIs, Architecture, Amazon Web Services (AWS), ASP.NET Core, C#.NET, Front-end Development, REST APIs, Git, Azure DevOps, Technical Leadership, ASP.NET MVC, Razor, .NET 6, Azure SQL, HTML5, Full-stack, Application Architecture, API Integration, Web API, Visual Studio Development, Microsoft Teams, Azure Active Directory B2C (ADB2C), Microsoft Azure, Solution Architecture

Lead Senior Software Designer

2016 - 2018

Tata Consultancy Services

Planned and developed a web application for a large client in the financial industry using HTML5, AngularJS, and ASP.NET MVC.
Integrated an existing desktop software solution with the new web-based system, including concurrency handling and transactional support.
Coordinated the work of ten developers, assigned, and explained tasks, performed code and solution reviews, mentored new colleagues, and owned general people management.

Technologies: ASP.NET, Windows Communication Foundation (WCF), Oracle, JavaScript, HTML, CSS, AngularJS, NHibernate, Unit Testing, C#, Code Review, Interviewing, Azure, Team Leadership, Software Design, TypeScript, ASP.NET Web API, REST, APIs, Architecture, Software Architecture, C#.NET, Front-end Development, REST APIs, Git, Azure DevOps, Technical Leadership, ASP.NET MVC, Razor, Bootstrap, HTML5, IIS, Full-stack, Application Architecture, API Integration, Web API, Windows Server 2016, .NET 4, Visual Studio Development, Microsoft Teams

Senior Software Engineer

2013 - 2016

EPAM Systems

Developed and supported a shared business module for several gambling sites as a key developer for a Swedish betting company.
Implemented a new website using Sitecore CMS and the client’s custom web framework, designed and implemented content hierarchy and server-side functionality connecting to legacy systems, and led a team of two-to-six people.
Worked on an internal cost tracking mobile application for iOS.

Technologies: ASP.NET, Sitecore, JavaScript, HTML, CSS, Swift, NServiceBus, Unit Testing, C#, Code Review, Entity Framework, Team Leadership, ASP.NET Web API, REST, APIs, C#.NET, Front-end Development, REST APIs, Microsoft SQL Server, ASP.NET Web Forms, jQuery, Git, ASP.NET MVC, Razor, Bootstrap, T-SQL (Transact-SQL), IIS, Full-stack, Legacy Software, Windows Services, API Integration, Web API, SQL Server 2014, .NET 4, Visual Studio Development, Dapper

Axapta Developer

2012 - 2013

XAPT

Designed and implemented additional modules for an OCR workflow for the Hungarian census data processing.
Developed various changes to existing Dynamics AX solutions.
Built inventory management software on handheld devices.

Technologies: .NET, Entity Framework, Windows Presentation Foundation (WPF), Windows Communication Foundation (WCF), Microsoft Dynamics AX, Windows Mobile, C#, REST, APIs, C#.NET, ASP.NET Web Forms, T-SQL (Transact-SQL), IIS, Full-stack, Legacy Software, .NET 4, WCF Web Services, Visual Studio Development

Application Management Expert

2008 - 2011

Grepton

Supported and implemented new change requests for an internal application used by customer support for a telecommunications client.
Planned an integration between an internal system and Oracle Siebel CRM and provided consultations for the implementing party as a technical consultant.
Implemented inventory management software for handheld devices for a client in the transportation industry.

Technologies: .NET, Windows Forms (WinForms), ASP.NET, SQL, C#, Azure, APIs, C#.NET, Front-end Development, ASP.NET Web Forms, T-SQL (Transact-SQL), IIS, Full-stack, Legacy Software, Windows Services, WCF Web Services, Visual Studio Development

Experience

Modernization Project for a Lifestyle Management Company

The project included rewriting an existing client management portal using the most modern technologies and paradigms available.

I was the lead developer, coordinating the work of 15 to 20 developers, conducting code reviews, interviewing for new hires, and guiding releases.

High Traffic Services for the World's Largest B2B Travel Provider

My team and I created the core booking engine services and integrated various external data providers for the world's largest travel provider. At peak traffic, the system was handling one billion requests per day.

Financial Application for a Fortune 500 Company

My team of 10 developers and I were tasked with modernizing and rewriting an existing financial desktop application to a web-based one. We chose SPA architecture with an ASP.NET 4.5 web API back end and an AngularJS front end with the Oracle database already present.

Education

2002 - 2010

Master's Degree in Information Technology

Budapest Institute of Technology and Economics - Budapest, Hungary

Certifications

DECEMBER 2023 - DECEMBER 2026

AWS Certified SysOps Administrator – Associate

Amazon Web Services

AUGUST 2023 - AUGUST 2026

AWS Certified Developer – Associate

Amazon Web Services

MAY 2023 - MAY 2026

AWS Certified Solutions Architect – Associate

Amazon Web Services

JANUARY 2014 - PRESENT

Website .NET Developer Certification for Sitecore CMS 7.0

Sitecore

APRIL 2012 - PRESENT

Microsoft Certified Professional

Microsoft

MARCH 2009 - PRESENT

Microsoft Certified Solution Developer

Microsoft

Skills

Libraries/APIs

Entity Framework, REST APIs, jQuery, Web API, Windows Forms (WinForms), React, NServiceBus

Tools

Git, Visual Studio Development, Microsoft Teams, Dapper, Microsoft Dynamics AX, Azure Active Directory B2C (ADB2C)

Languages

SQL, JavaScript, C#, C#.NET, HTML, CSS, TypeScript, HTML5, T-SQL (Transact-SQL), Swift

Frameworks

.NET, ASP.NET, Entity Framework Core, .NET Core, ASP.NET Web API, ASP.NET Core, ASP.NET Web Forms, ASP.NET MVC, Razor, .NET 4, Angular, Jasmine, AngularJS, gRPC, Blazor, Windows Presentation Foundation (WPF), NHibernate, Bootstrap, Tailwind CSS

Paradigms

Unit Testing, Azure DevOps, Application Architecture, Microservices, REST

Storage

Microsoft SQL Server, SQL Server 2014, PostgreSQL, Azure SQL

Platforms

Windows, Azure, Docker, Kubernetes, Windows Mobile, Amazon Web Services (AWS), Oracle, Windows Server 2016

Other

Development, Team Leadership, Software Design, Code Review, APIs, Architecture, Front-end Development, Technical Leadership, .NET 6, Full-stack, Legacy Software, API Integration, Windows Communication Foundation (WCF), Interviewing, Software Architecture, IIS, Windows Services, WCF Web Services, Single Sign-on (SSO), Microsoft Azure, Solution Architecture, Sitecore, OAuth, Code Deployment, Codebase Development, AWS Certified Developer, Cloud, Cloud Infrastructure

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