About Jan
Czech
Native or bilingual
German
Fluent
English
Fluent
Experience
- SIX Group AG,Fullstack Developer & AI ResearchBANKING AND INSURANCEFebruary 2023 - October 2023 (8 months)Zürich, Switzerland
- Developed various frontend & backend components in payments using Java 17 Spring Boot, Angular 14, REST API, IntellJ, GitBucket, OpenShift.
- Research on various LLM use-cases in payment processing: chat bot for internal & customer knowledge bases.
- UBS,Lead Developer & ArchitectBANKING AND INSURANCEAugust 2020 - January 2023 (2 years and 5 months)Zürich, SwitzerlandPlanning & Staffing: Built and scaled cross-functional team by hiring and guiding Developers, Testers, andBusiness Analysts.Technical Leadership: Directed design, architecture, and implementation of front- and backend componentsin payment systems, leveragingJava/Kotlin Spring, JSP, SOAP/REST APIs, and GitLab.KeyProjects:
- EBICS Web Client – Architected and developed a full-stack web application (Vue3, Kotlin Spring, REST)enabling secure communication between customer and partner banks.
- Digital Invoicing Pricing Engine – Designed and delivered a transaction pricing application for billers (JavaSpring, JSP, REST).
- ISO 20022 Repayment Process – Led design and requirement analysis, ensuring compliance withinternational standards.
- Payment Format Integration – Authored mapping specifications bridging XML ISO20022, SWIFT, and proprietary formats, streamlining payment interoperability.
- UBS,Fullstack Developer & Lead Business AnalystBANKING AND INSURANCEJuly 2018 - July 2020 (2 years)Zürich, SwitzerlandLead development and analysis of core frontend and backend components in payment systems usingJava/Kotlin Spring, JSP, SOAP/REST APIs, GitLab, and Oracle PL/SQL.Key projects:
- Automation Tool for File-based APIs – Designed and led development of an asynchronous file APIautomation framework for end-to-end testing of EBICS and ISO20022 payment APIs (Java, Spring, POI)
- Payment Status Integration – Built integration module for payment status management (Java Spring, MQ,SOAP, Oracle PL/SQL)
- Payment Format Standardization – Led mapping specifications across XML ISO20022, SWIFT, and proprietary/internal formats
- SWIFT GPI for Corporates – Conducted analysis for global payment innovation (GPI) to enable corporatepayment tracking
- Package-based Pricing – Designed and implemented package-pricing models for e-banking and multibankingcustomers
- SFTP Channels – Led analysis of push/pull SFTP integration channels for customer communicationQR-Bill Migration – Directed analysis and implementation of QR-Bill as a replacement for ESR payment slips
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Education
- Life Coaching CertificationLife Coaching Training Institute2025Training for life coaching of individuals and groups.
- PyTorch for DeepLearningUdemy inc.2025PyTorch for DeepLearning