

Hey, I'm Viana Kalversberg
Munich, Germany
Full-stack engineer and builder at heart
About Me
I'm a software engineer with 7+ years of experience working on enterprise systems, ERP data, developing and SaaS products.
My roots are in process mining - analyzing and modeling complex business data. Over the years I've grown into building scalable web applications myself. I enjoy solving ambiguous problems where systems, data, and product meet.
Work Experience
2021 - 2024
Featured Projects
PythonDjango RESTVue 3TypeScriptAWSPostgresOpenAIZoomNode.jsNginxCelonisSQLCargoWiseSAP ECCMicrosoft Dynamics
2023–2025
Funclass App
Built and scaled a full-stack edtech platform serving over 2,000 monthly users worldwide, including China. Funclass began as a virtual classroom offering a game-like learning experience and evolved into an all-in-one platform to manage students, handle global payments, and automate tutoring operations.
PythonDjango RESTVue 3TypeScriptAWSPostgres
View Project 2025
Funclass - AI Feedback for Language Learning
An AI-powered feedback feature that analyzes Zoom lesson transcripts to evaluate students' English-speaking performance. It provides curriculum-aligned insights on fluency, vocabulary, and grammar, transforming raw transcripts into structured, visual progress summaries.
OpenAIPythonDjango RESTVue 3TypeScript
View Project 2025
Funclass - Zoom App
Built Funclass's Zoom App, published in the Zoom App Marketplace after passing Zoom's architectural and security reviews. The app securely syncs session data and authentication states between Zoom and the Funclass web platform, enabling automatic attendance tracking and seamless integration of Funclass's gamified learning features directly within Zoom meetings.
ZoomNode.jsPythonDjango RESTVue 3TypeScript
View Project 2024
Funclass - Building China Infrastructure
Built the China infrastructure for Funclass, including meeting server infrastructure and frontend, fully integrated with the global AWS infrastructure, ensuring low latency across the Great Firewall. Navigated complex technical and compliance challenges such as isolated network environments, ICP licensing, and navigating costs.
AWSNginx
View Project 2021–2024
Freelance Consulting - Process Mining
Started freelancing for Celonis and their clients in the DACH region, helping businesses improve their processes through data. This led to a multi-year project with the world’s largest global forwarding company to reconstruct their global freight process from millions of ERP data points. Built analytical dashboards together with business process experts to identify inefficiencies and improvement opportunities.
CelonisSQLPythonCargoWiseSAP ECCSAP S/4HANAMicrosoft Dynamics
View Project It was a pleasure for us to work with Viana, who is not only a seasoned IT professional, knowing very well the Process and Data Mining domains, but - what is quite unique - she also has a gift to immerse quickly into new business domains. DGF's operational processes are typically quite complex to comprehend by consultants and yet Viana managed very quickly to become a peer for our subject matter experts in discussions of our business challenges. Viana's working style is not just to implement the requirements - she makes sure that she understands them and very often she shapes them, she comes up with her own proposals. And one more thing that does not happen often when working with consultants: Viana delivers either on-time or ahead of time - I was impressed many times with her fantastic speed of execution.
Piotr Wójtowicz
Global Head of Business Process Architecture at DHL Global Forwarding
Viana consistently demonstrated exceptional expertise in process mining and ERP data structures. Her deep understanding of enterprise systems and ability to model complex processes enabled her to identify value opportunities and successfully acquire and deliver multiple process mining projects. She combines strong analytical thinking with clear communication, an exceptional ability to connect technical detail with business value.
Andrei Costea
Managing Director at Berata GmbH
Working with Viana at Funclass has been an exceptional experience. She is a highly strategic and analytical person who brings structure and clarity to complex challenges. Viana takes full ownership of her work, combines deep technical understanding with strong business sense, and consistently goes the extra mile to make things happen. Beyond her professional excellence, she’s also a great collaborator — reliable, communicative, and truly enjoyable to work with.
Crystal Clear
Co-founder & CEO at Funclass, CEO Crystal Clear ESL