Hi, This Is István Kappelmayer 👋

Swiss Cybersecurity Management Center GmbH, CH, Zürich

Founder / Solutions Architect

• End-to-end conception and build of an FADP-compliant Swiss cybersecurity assessment SaaS (scmc.ch), live in AWS Zurich (eu-central-2) since November 2025

• Serverless architecture: Quarkus Native Lambda backend on GraalVM, DynamoDB single-table, Cognito, Vue 3 frontend

• Infrastructure as Code with AWS CDK, full CI/CD delivery via GitHub Actions

K-I-Soft IT&Holding GmbH, CH, Kehrsatz

Owner / Senior AWS Solution Architect

• Independent software practice: serverless websites, custom SaaS and back-office automation on AWS, Build-then-Retain model

• Designed and built complete solutions with Quarkus Native, Vue 3 and Astro, serverless backend with full CI/CD automation

• AWS Well-Architected health checks delivered as standalone audits

Randstad Digital Switzerland AG (Ausy Technologies), CH, Zürich

Senior Cloud Solution Architect

• APN alliance lead, building the AWS partnership up to Select tier

• End-to-end application migrations into AWS (Oracle to RDS, J2EE modules onto ECS Fargate)

• Authentication@Edge with CloudFront, Cognito and Lambda@Edge

Amanox Solutions AG / Digicomp Academy AG, CH, Bern

Senior Cloud Architect / AWS Trainer

• Planned and implemented cloud architectures based on customer requirements

• Delivered AWS trainings for professionals and corporate clients

• Created and presented cloud PoCs for public and hybrid cloud solutions

CSC / DXC Technologies, CH, Bern

Senior Application Architect / Technical Lead

• Modernized J2EE applications to microservices with Spring Boot and Quarkus

• Developed Angular frontends and enterprise-grade backend modules

• Designed and implemented OpenShift-based DevOps solutions with full automation

Cognizant Technology Solutions, USA (Malta, NY)

Architect

• Led backend development for integration and statistical processing systems

• Migrated legacy systems to microservices using Spring and MongoDB

• Developed REST APIs and AngularJS frontends within an enterprise framework

• Coordinated distributed teams across the US, Germany, and offshore lo-cations

Cognizant Technology Solutions, DE, Essen

Technical Lead

• Implemented enhancements in legacy telecom applications for a major provider

• Managed knowledge transfer and offshore coordination

• Visualized physical telecom wiring and DSL termination networks

• Developed Application using Eclipse RCP, WebSphere, Spring, and WebSphere MQ

NAS Ltd, HU, Budapest

Architect / Lead Developer

• Designed and implemented national-scale Java enterprise systems for pension insurance and government digital services

• Led backend integration projects across AS400, Windows, and Java systems using WebSphere ESB and MQ.

• Developed secure XML-based digital signature and timestamping solutions for government documents using PKI, XADES, and Java Cryptography (PKCS#7, PKCS#12).

Appello Ltd, HU, Budapest

Developer

HC Pointer Ltd, HU, Pécs

Developer

Commit Ltd, HU, Budapest

Developer

Appello Ltd, HU, Budapest

Developer

Commit Ltd, HU, Budapest

Developer