Attila S. Szilágyi

Software developer, team lead · .NET, ERP, AI-assisted development

Portrait of Attila S. Szilágyi

Profile

From 2003 to 2022 I worked for almost two decades as an enterprise software developer, systems analyst and eventually team lead. I designed, built and rolled out custom ERP and CRM systems on .NET/C# and MS SQL. At AvenDATA I led a development team in Mumbai as product owner, and at Avon a 3–4 member scrum team. With a degree in technical and business informatics, my strength is translating between business processes and technology: I have taken projects from requirements analysis through system design and development to rollout and user training.

Since 2022 I have worked as a personal development counsellor, which has deepened the communication, motivation and conflict management skills a team lead needs. In 2026 I led the development of a system of ten websites with AI agents (Claude Code, ChatGPT, Gemini), so I know the business value, limits and risks of AI-assisted development first-hand. With this experience I would like to return to leading software development.

Experience

Leading AI-assisted development – own project2026
Personal development counsellor – own practice2022–

Individual and small-group counselling for adults, alongside training in psychology. Client-centred communication, motivation, conflict management, facilitating group processes.

Team lead developer2019–2022
Avon – B2C framework (C#, .NET, Angular, MS SQL)
Software developer2018
Heitech AG – implementing an automotive industry standard in an industrial process control framework (.NET, WPF)
Software developer, product owner and team lead2016–2017
AvenDATA GmbH – archiving and migrating data from legacy enterprise systems (Berlin, Budapest, Mumbai)
Software developer, systems analyst – project assignments2010–2015
Business IT specialist, ERP and CRM developer – freelance2003–2016

Skills

Leadership
Leading scrum teams, task and capacity planning, managing priorities, code review, mentoring, representing business and technical decisions
.NET
C#, VB.NET, WinForms, WPF, WCF, ADO.NET, Entity Framework, NUnit
Databases
MS SQL Server: database design, stored procedures, query optimisation; Oracle PL/SQL, SQLite
Web, integration
Angular, HTML, CSS, JavaScript, web services (SOAP, WCF), XML, system integration
Other
C, C++, Qt; industrial automation; IT security (CEH)
AI
Leading development with AI agents (Claude Code, ChatGPT, Gemini), assessing the value and risks of AI adoption
Business
Degree in technical and business informatics, business logistics, ERP and CRM processes

Education

BSc in Electrical Engineering – technical and business informatics2003
Budapest Tech, Kandó Kálmán Faculty of Electrical Engineering (now Óbuda University), business logistics module
Certified Ethical Hacker (EC-Council CEH) postgraduate course2016
Óbuda University

Languages

Hungarian: native. English: intermediate, daily professional communication in international teams and with clients.