Csaba Kéri

Collaborated with mixed client-company teams on requirement engineering, proposals, and estimations. Developed ACLs, business rules, workflows, catalog items, scripts, UI actions, scoped apps, and integrations. Coordinated with clients, supported testing, handled deployments, upgrades, CMDB, domain separation, and asset management. Worked extensively with GlideScript for rules, REST endpoints, extensions, and automation scripts.

Contributed to a Scrum team developing a messaging-based microservices .NET 6 app on AWS. Migrated solutions to .NET 6, documented features, worked on employee info management, built an OpenShift POC environment, recreated Looker Studio reports from BigQuery, and managed an Azure environment for a .NET 7/SQL/Angular app. Tech stack: C#, Kafka, Kubernetes, Argo, Splunk, Postgres, Angular, .NET 7, Azure, OpenShift, Java, Selenium, Cucumber, BigQuery.

Developed new product features and client-specific solutions across the SDLC. Created documentation, performed code reviews, testing, QA, and supported multi-team planning. Collaborated with PMs and consultants to translate requirements, investigated client issues, provided fixes, and trained junior members. Tech stack: C#, Oracle, Azure DevOps, DevExpress XPO, SVN, Git, JIRA, TFS.

Led TFS-to-Azure DevOps migration, architecture planning (partial lead), and development of a tax reporting app using bank data. Handled ETL, calculations, PDF generation, infra setup (Windows, Docker, SQL, Raven), CI/CD with weekly multi-env releases, integrations, performance optimization, and team coaching. Tech stack: C#, ASP.NET MVC, SQL Server, Azure DevOps, Docker, RavenDB, Git, Angular, Prometheus, Grafana, Rebus, Serilog, DevExpress Reporting.

Led architectural planning, development, change management, code reviews, and bug fixes for an internal business app with web, ClickOnce, and Windows service components. Managed complex functions, nightly calculations, reporting, release planning, installations, testing, user communication, mentoring, and system optimization (5 releases/year). Tech stack: C#, ASP.NET, SQL Server, JQuery, IIS, Dapper, EA, JIRA, TeamCity, Sonar, SNOW.

Extending the TIBCO Spotfire data visualization application with enhancements, extensions and management tools. Leading two scrum development teams. Making sure to keep deadlines and providing technical support for all team members. Reviewing the code, designing software architecture, holding trainings, ensuring quality, finding and investigating new directions and technologies. Optimizing SQL, Hadoop/Hive queries and C# code resulting in 30-200% performance improvement.

Designed and developed a distributed n-tier architecture multimedia content provider system for a movie channel. A multilingual central management system, on 100+ servers. Optimized SQL/C# resulting in 30-50% performance improvement. Designed and developed a distributed web application for a hardware store. Selling products for the customers, placing orders to the suppliers, generating and printing statistics.

Designed and developed multiple web applications. Optimized SQL queries and C# code resulting in 10-80% performance improvement.

Developing mostly web sites including http://wizzair.com . Doing some basic ETL projects. Gathering experiences with WPF and SQL/Code optimization.

Planning, developing, testing web sites in more sizes. Developing some standalona applications and doing some integration projects. Gathering experiences in client handling. Working onsite mostly.

Developed internal Nextra web pages and MS SQL Server 2000 based web apps. Planned, created and tested Nextra 2000 CD: A product with MS Internet Explorer Administration Kit which was able to install a modem on every known Windows version, to connect to a registration server and to guide users through the registration process. After the registration the application downloaded a configuration file and configured the modem. After these steps the user was able to surf on the web.

Multimedia, Economics Informatics